CN210256939U - Tectorial membrane plug forming die and tectorial membrane plug - Google Patents
Tectorial membrane plug forming die and tectorial membrane plug Download PDFInfo
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- CN210256939U CN210256939U CN201920822504.XU CN201920822504U CN210256939U CN 210256939 U CN210256939 U CN 210256939U CN 201920822504 U CN201920822504 U CN 201920822504U CN 210256939 U CN210256939 U CN 210256939U
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Abstract
The utility model relates to a forming die technical field, concretely relates to tectorial membrane plug forming die and tectorial membrane plug. The rubber plug forming die comprises an upper die core and a lower die core; the lower die core is provided with a first cavity and a second cavity which are communicated with each other from top to bottom; the first cavity of this plug crown fashioned and the fashioned second cavity of plug neck all set up the mode of setting on the mold core down, have guaranteed that the plug has the mobile sheet rubber by the heating in vulcanization molding process, only can flow in top-down in the mold core down, and its mobility is low, reduces because of flowing and causes the possibility of sheet rubber surface tectorial membrane skew. In addition, in the rubber plug forming process, the first convex column extends to the first cavity and can be matched with the second convex column to clamp the rubber sheet to be vulcanized, so that the positioning of the surface coating of the rubber sheet in the vulcanization forming process is further ensured, and the technical problem of the film deviation of the coated rubber plug is solved.
Description
Technical Field
The utility model relates to a forming die technical field, concretely relates to tectorial membrane plug forming die and tectorial membrane plug.
Background
The rubber plug is a medicine inner packaging product, the traditional rubber plug is made of rubber, but under specific conditions (such as acidity and alkalinity), components in the rubber plug made of the rubber can migrate into medicines in contact with the rubber plug to cause pollution, so that the health of a human body is influenced. Therefore, the surface-coated medical rubber plug comprises a bottle plug body, wherein the surface of the bottle plug body is provided with a layer of film, and the film has higher biological inertia and chemical stability compared with rubber when being contacted with a medicament, so that the quality of the medicament is better ensured.
The surface-coated medicinal rubber plug is divided into two types, the first type is the full-coated rubber plug provided in EP450098B1, and the full-coated rubber plug is prepared by vulcanizing and molding a rubber sheet and a film in a forming die with an upper cavity and a lower cavity. Although the fully-coated rubber plug can have certain chemical stability, when a medicine is packaged, a coating exists at the contact end of the edge of the crown part of the rubber plug and the edge of the plane of the opening of the medicine bottle, and the sealing performance of the medicine can be directly influenced due to the smooth surface of the coating. The second surface-coated medical rubber plug is a rubber plug neck-coated rubber plug provided in patent document CN106426699A, which is formed into a rubber plug neck with a coated film through a single vulcanization molding, and then is formed again, and the coated film needs to be subjected to secondary high temperature due to secondary molding, so that the coated film is damaged, and the coated film is easy to age; in addition, in the transportation process after the medicine is packaged, particularly, the preparation which is filled firstly and then sterilized is subjected to shaking due to the medicine, the rubber plug is provided with a naked plug neck part of the coated film and can be in direct contact with the medicine powder, the medicine liquid and the water injection, so that the medicine can enter the inverted foot naked plug position of the bottle opening through a gap between the coated film surface and the bottle wall and can contact the rubber without the coated film on the crown part of the rubber plug and the sealing surface of the bottle opening, and the quality of the medicine can be influenced certainly when the part without the coated film of the rubber plug is in contact with the medicine.
In order to solve the problems of the film-coated rubber plug, patent document CN105662859A proposes a film-coated rubber plug and a production method thereof, wherein a film is coated on the surface of the neck of the rubber plug, and the film-coated part extends from the surface of the neck of the rubber plug to the plane position where the crown of the rubber plug and the mouth of the bottle are sealed.
Although the laminated rubber plug solves the problem of rubber plug generation in the using process, the problem of film deviation of the laminated film can be generated in the process of vulcanizing and molding the laminated rubber plug by adopting the existing mold, so that the yield is not high.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect of the tectorial membrane plug tuningout among the prior art to a tectorial membrane plug forming die and tectorial membrane plug are provided.
In order to solve the technical problem, the utility model discloses a technical scheme as follows:
the utility model provides a film-coated rubber plug forming die, which comprises,
an upper mold core and a lower mold core;
the lower die core is provided with a first cavity and a second cavity which are communicated with each other from top to bottom;
the first cavity is used for forming the crown part of the rubber plug, and the second cavity is used for forming the neck part of the rubber plug;
a second boss extending towards the first cavity is arranged in the second cavity;
the upper die core comprises an upper die core body and a first convex column, and in the rubber plug forming process, the first convex column extends into the first cavity.
In the film-coated rubber plug forming die, the upper die core body is provided with at least one concave ring surrounding the first convex column.
Optionally, one of the concave rings is arranged at the joint position of the first convex column and the upper mold core body.
In the film-coated rubber plug forming die, the upper die core body is provided with the plurality of grooves, and the grooves surround the first convex columns and are evenly arranged.
In the film-coated rubber plug forming die, the first cavity is a cylindrical cavity; the lower mold core is provided with a lower mold core body, and the lower mold core body is in the transition position of the first cavity and the second cavity and is in an arc shape.
Optionally, in the above film-coated rubber plug forming mold, the top end of the second protruding column is flush with the lower surface of the first cavity.
The utility model provides a tectorial membrane plug, it is formed by foretell tectorial membrane plug forming die shaping.
The utility model discloses technical scheme has following advantage:
1. in the prior art, a cavity for forming the crown part of the rubber plug is arranged in the upper mold core, and a cavity for forming the neck part of the rubber plug is arranged in the lower mold core, and the rubber sheet with fluidity can flow upwards and/or downwards between the upper mold core and the lower mold core in the vulcanization forming process, so that the film coating deviation probability on the surface of the film is increased due to the violent fluidity of the rubber sheet. The utility model provides a rubber plug forming die, which comprises an upper die core and a lower die core; a first cavity and a second cavity which are communicated with each other are arranged on the lower mold core from top to bottom; and a second convex column extending towards the first cavity is arranged in the second cavity, the upper die core comprises an upper die core body and a first convex column, and the first convex column extends into the first cavity in the rubber plug forming process. The first cavity of this plug crown fashioned and the fashioned second cavity of plug neck all set up the mode of setting on the mold core down, have guaranteed that the plug has the mobile sheet rubber by the heating in vulcanization molding process, only can flow in the lower mold core, and its mobility is low, reduces because of flowing and causes the possibility of sheet rubber surface tectorial membrane skew. In addition, in the rubber plug forming process, the first convex column extends into the first cavity and can be matched with the second convex column to clamp the rubber sheet to be vulcanized, so that the positioning of the surface coating of the rubber sheet in the vulcanization forming process is further ensured.
2. The utility model provides a plug forming die is equipped with at least one on last mold core body and encircles the concave ring of first projection and/or center on a plurality of recess that first projection evenly set up, its chamber stopper crown after guaranteeing the shaping has annular protruding and/or lug, has reduced the contact area between the plug, can prevent the adhesion of plug at transportation process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a cross-sectional view of an upper mold core provided in an embodiment of the present invention;
fig. 2 is a cross-sectional view of a lower mold core provided in an embodiment of the present invention;
fig. 3 is a top view of the film-coated rubber plug manufactured by using the forming mold provided by the embodiment of the present invention;
fig. 4 is a cross-sectional view of a film-coated rubber plug manufactured by using a forming die provided by the embodiment of the utility model;
description of reference numerals:
1, mounting a mold core; 2-lower mold core; 6-laminating a rubber plug; 11-a first stud; 12-a concave ring; 13-a groove; 21-a second boss; 22-a first cavity; 23-second cavity.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
As shown in fig. 1-2, the present embodiment provides a mold for forming a film-coated rubber plug, which includes:
an upper mold core 1 and a lower mold core 2;
the lower mold core 2 is provided with a first cavity 22 and a second cavity 23 which are communicated with each other from top to bottom;
the first cavity 22 is used for forming the crown part of the rubber plug, and the second cavity 23 is used for forming the neck part of the rubber plug;
the second cavity 23 has a second boss 21 extending towards the first cavity 22;
go up mold core 1 and include mold core body and first projection 11, in the plug forming process, first projection 11 extends to in the first cavity 22.
The first cavity of this plug crown fashioned and the fashioned second cavity of plug neck all set up the mode of setting on the mold core down, have guaranteed that the plug has the mobile sheet rubber by the heating in vulcanization molding process, only can flow in top-down in the mold core down, and its mobility is low, reduces because of flowing and causes the possibility of sheet rubber surface tectorial membrane skew. In addition, in the rubber plug forming process, the first convex column extends to the first cavity and can be matched with the second convex column to clamp the rubber sheet to be vulcanized, so that the positioning of the surface coating of the rubber sheet in the vulcanization forming process is further ensured, and the technical problem of the film deviation of the coated rubber plug is solved.
In the film-coated rubber plug forming die, the upper die core body is provided with at least one concave ring 12 surrounding the first convex column 11.
Optionally, one of the concave rings 12 is disposed at a joint position of the first protruding pillar 11 and the upper mold core body.
In the film-coated rubber plug forming die, the upper die core body is provided with the plurality of grooves 13, and the grooves 13 surround the first convex columns 11 and are evenly arranged.
Be equipped with at least one on last mold core body and encircle the concave ring 12 of first projection, and/or center on a plurality of recess 13 that first projection 11 evenly set up, it guarantees that the chamber stopper crown portion after the shaping has annular protrusion and/or lug, has reduced the contact area between the plug, can prevent the adhesion of plug in transportation process.
In the film-coated rubber plug forming die, the first cavity 22 is a cylindrical cavity and can form a rubber plug crown part after vulcanization forming; the lower mold core 2 is provided with a lower mold core body, the lower mold core body is arc-shaped at the transition position of the first cavity 22 and the second cavity 23, and the covering film extending to the transition position is ensured not to be damaged in the forming process and the subsequent using process.
Optionally, the top end of the second convex column 21 is flush with the lower surface of the first cavity 22 to ensure the positioning of the rubber sheet to be vulcanized.
Example 2
Three embodiments provide a film-coated rubber plug, which is formed by molding the film-coated rubber plug molding die of embodiment 1. The forming method of the forming die comprises the following steps of positioning the film-coated rubber sheet and the top rubber sheet into the first cavity 22, pressing the upper die core 1 and the lower die core 2, and vulcanizing the film-coated rubber sheet and the top rubber sheet to form the film-coated rubber plug. Referring to fig. 3-4, the foot part of the film-coated rubber plug is provided with a film-coated section, and the crown part is provided with a protrusion and a lug, so that the contact area between the rubber plugs is reduced, and the rubber plugs can be prevented from being adhered in the conveying process.
Optionally, the positioning manner of the film-covered film and the top film which are attached to each other and positioned to the first cavity 22 may be selected as setting a positioning mark on the outer surface of the top film and setting a positioning reference mark outside the lower mold core 2, thereby completing the positioning; other positioning means in the art may be chosen.
Wherein, the mentioned films are all rubber films and unvulcanized film stocks; the filmed film refers to a film coated on one side of a film stock, and the film can be a vinyl film, a polyolefin film, a polystyrene film, an acrylate film, a polyamide film, a polyether film, a polyester film, a polyurethane film, a polytetrafluoroethylene film, an ethylene tetrafluoroethylene copolymer film, a tetrafluoroethylene-hexafluoropropylene copolymer film or other films suitable for rubber plug coating.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (7)
1. The utility model provides a tectorial membrane plug forming die which characterized in that includes:
an upper mold core (1) and a lower mold core (2);
the lower mold core (2) is provided with a first cavity (22) and a second cavity (23) which are communicated with each other from top to bottom;
the first cavity (22) is used for forming a rubber plug crown part, and the second cavity (23) is used for forming a rubber plug neck part;
the second cavity (23) is internally provided with a second convex column (21) extending towards the first cavity (22);
go up mold core (1) including last mold core body and first projection (11), in the plug forming process, first projection (11) extend to in first cavity (22).
2. The mold for molding a film-coated rubber plug according to claim 1, wherein the upper mold core body is provided with at least one concave ring (12) surrounding the first convex column (11).
3. The mold for molding rubber plug covered with film according to claim 2, wherein one of the concave rings (12) is disposed at the joint position of the first convex column (11) and the upper mold core body.
4. The mold for molding a film-coated rubber plug according to any one of claims 1-3, wherein the upper mold core body is provided with a plurality of grooves (13), and the grooves (13) are uniformly arranged around the first convex column (11).
5. The mold for molding a film-coated rubber plug according to any one of claims 1-3, wherein the first cavity (22) is a cylindrical cavity;
the lower mold core (2) is provided with a lower mold core body, and the lower mold core body is in the transition position of the first cavity (22) and the second cavity (23) and is in an arc shape.
6. The mold for molding a film-coated rubber plug according to claim 5, wherein the top end of the second convex pillar (21) is flush with the lower surface of the first cavity (22).
7. A coated rubber plug, which is characterized in that the coated rubber plug is formed by the forming die of the coated rubber plug of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920822504.XU CN210256939U (en) | 2019-05-31 | 2019-05-31 | Tectorial membrane plug forming die and tectorial membrane plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920822504.XU CN210256939U (en) | 2019-05-31 | 2019-05-31 | Tectorial membrane plug forming die and tectorial membrane plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210256939U true CN210256939U (en) | 2020-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920822504.XU Active CN210256939U (en) | 2019-05-31 | 2019-05-31 | Tectorial membrane plug forming die and tectorial membrane plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210256939U (en) |
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- 2019-05-31 CN CN201920822504.XU patent/CN210256939U/en active Active
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