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CN-224224415-U - Injection molding die for cover with flip cover

CN224224415UCN 224224415 UCN224224415 UCN 224224415UCN-224224415-U

Abstract

The utility model provides an injection molding die for a cover with a flip cover, which comprises a cover body molding assembly, wherein the cover body molding assembly comprises a bottom die and a middle die, a boss is arranged at the top of the middle die, a first side die and a second side molding die which are detachably arranged at the top of the bottom die are arranged at the outer side of the boss, and a first molding cavity is arranged at the bottom of the middle die. According to the utility model, the cover body and the flip cover are respectively subjected to injection molding by adopting independent molding components during injection molding, meanwhile, the middle mold is provided with the through groove for the first top mold and the second top mold to pass through, so that the bottom edge of the flip cover formed by injection molding can be connected to the top of the cover body, and the cover body molding component and the flip cover molding component are of detachable split type structures, so that the resistance during demolding can be effectively reduced, the demolding can be more conveniently performed after the injection molding is finished, and the risk of mold clamping is reduced.

Inventors

  • HUANG QINGWEI
  • WU LAIGUO
  • FANG DAJING

Assignees

  • 福建恒隆新材料科技有限公司

Dates

Publication Date
20260512
Application Date
20250603

Claims (7)

  1. 1. An injection molding die for a flip cover, comprising: The cover body forming assembly comprises a bottom die (1) and a middle die (2), a boss (4) is arranged at the top of the middle die (2), a first side die (5) and a second side forming die (6) which are detachably arranged at the top of the bottom die (1) are arranged at the outer side of the boss (4), a first forming cavity (19) is arranged at the bottom of the middle die (2), a cavity for forming a cover body (10) is formed by encircling between the boss (4) and the first side die (5) and the second side forming die (6), and a first injection channel (7) for injecting a solution into the cavity is arranged on the first side die (5); The flip forming assembly comprises a first top die (3) and a second top die (8) which are matched with each other, a second forming cavity (20) for forming a flip (21) is formed in the opposite side wall of the first top die (3) and the opposite side wall of the second top die (8), a second injection channel (9) for injecting a solution into the inner side of the second forming cavity (20) is formed in the first top die (3), and a through groove (18) matched with the first top die (3) and the second top die (8) is formed in the middle die (2).
  2. 2. An injection moulding mould for a flip cap according to claim 1, characterized in that the cross-sections of the first injection moulding channel (7) and the second injection moulding channel (9) are circular, and the cross-sectional diameter of the second injection moulding channel (9) is smaller than the cross-sectional diameter of the first injection moulding channel (7).
  3. 3. Injection molding die for flip cover according to claim 1, characterized in that the middle die (2) and the second top die (8) are provided with exhaust channels (22), two exhaust channels (22) are respectively communicated with the interiors of the first molding cavity (19) and the second molding cavity (20), and the exhaust channels (22) are used for exhaust during injection molding.
  4. 4. Injection molding die for cover with flip cover according to claim 1, characterized in that the top four corners of the bottom die (1) are fixedly connected with first guide rods (11) positioned outside the first side die (5) and the first injection molding channel (7), and the middle die (2) is provided with first guide holes (13) corresponding to the first guide rods (11) in position.
  5. 5. Injection molding die for cover with flip cover according to claim 1, characterized in that a plurality of evenly distributed positioning holes (12) are provided at the top of the bottom die (1), and positioning pins which are mutually matched with the positioning holes (12) are fixedly connected at the bottoms of the first side die (5) and the second side molding die (6).
  6. 6. Injection molding die for lid with flip cover according to claim 1, characterized in that the inner wall of the first top die (3) is provided with a second guiding hole (15), and the inner wall of the second top die (8) is fixedly provided with a second guiding rod (14) which is mutually matched with the second guiding hole (15).
  7. 7. Injection molding die for cover with flip cover according to claim 1, characterized in that the outer walls of the first top die (3) and the second top die (8) are provided with a plurality of limiting holes (17), limiting pins (16) are movably mounted in the limiting holes (17), and the length of the limiting pins (16) is larger than the hole depth of the limiting holes (17).

Description

Injection molding die for cover with flip cover Technical Field The utility model relates to the technical field of molds, in particular to an injection molding mold for a cover with a flip cover. Background The cover with the flip cover is an innovative design for connecting the cover body with the container opening through the hinge, has convenience and functionality, has the core advantages of single-hand opening and closing operation, does not need to rotate or apply pressure, greatly improves the use efficiency, is particularly suitable for a frequently opened scene, realizes high tightness through a buckle structure when the cover body is closed, and is widely applied to the fields of food packaging, daily chemicals and industrial containers. The cover is produced by adopting an integrated injection molding process, but because the cover body is connected with the edge of one side of the cover body, in order to prevent the cover body from being connected with the rest edges of the cover body in the injection molding process, the cover body and the cover body need to be kept in a vertical state during molding, so that demolding is difficult after injection molding is finished, and the cover body in the vertical state are easy to have uneven circulation when the cover body and the cover body are subjected to injection molding, so that the problem of material shortage is caused. To this end, the utility model proposes a new solution. Disclosure of utility model The utility model aims to solve the problems that the cover is produced by adopting an integrated injection molding process, but because the cover body is connected with the cover body at one side edge, the cover body and the cover body are prevented from being connected together at the other edges in the injection molding process, the cover body and the cover body need to be kept in a vertical state during molding, so that demolding is difficult after injection molding is finished, and the solution of the cover body and the cover body in the vertical state is easy to generate uneven circulation during injection molding, so that the problem of material shortage is caused. In order to achieve the above object, the present utility model provides the following technical solutions: An injection molding die for a lid with a flip cover to improve the above-described problems. The utility model is specifically as follows: The cover body forming assembly comprises a bottom die and a middle die, a boss is arranged at the top of the middle die, a first side die and a second side forming die which are detachably arranged at the top of the bottom die are arranged at the outer side of the boss, a first forming cavity is arranged at the bottom of the middle die, a cavity for forming a cover body is formed by surrounding the first forming cavity, the boss, the first side die and the second side forming die, and a first injection molding channel for injecting a solution into the cavity is arranged on the first side die; The flip forming assembly comprises a first top die and a second top die which are matched with each other, a second forming cavity for forming the flip is formed in the opposite side wall of the first top die, a second injection channel for injecting a solution into the inner side of the second forming cavity is formed in the first top die, and a through groove matched with the first top die and the second top die is formed in the middle die. As a preferable technical scheme of the utility model, the cross sections of the first injection molding channel and the second injection molding channel are circular, and the cross section diameter of the second injection molding channel is smaller than that of the first injection molding channel. As a preferable technical scheme of the utility model, the middle mold and the second top mold are respectively provided with an exhaust passage, the two exhaust passages are respectively communicated with the interiors of the first molding cavity and the second molding cavity, and the exhaust passages are used for exhaust during injection molding. As a preferable technical scheme of the utility model, the four corners of the top of the bottom die are fixedly connected with first guide rods positioned at the outer sides of the first side die and the first injection molding channel, and the middle die is provided with first guide holes corresponding to the first guide rods in position. As a preferable technical scheme of the utility model, a plurality of uniformly distributed positioning holes are formed in the top of the bottom die, and positioning pins matched with the positioning holes are fixedly connected to the bottoms of the first side die and the second side forming die. As a preferable technical scheme of the utility model, the inner wall of the first top die is provided with a second guide hole, and the inner wall of the second top die is fixedly provided with a second guide rod matched with the second gu