CN116461046B - Positioning structure for in-mold injection molding of hardware insert - Google Patents
Positioning structure for in-mold injection molding of hardware insert Download PDFInfo
- Publication number
- CN116461046B CN116461046B CN202310433411.9A CN202310433411A CN116461046B CN 116461046 B CN116461046 B CN 116461046B CN 202310433411 A CN202310433411 A CN 202310433411A CN 116461046 B CN116461046 B CN 116461046B
- Authority
- CN
- China
- Prior art keywords
- ring
- friction ring
- metal decorative
- plastic cover
- peripheral wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 47
- 239000004033 plastic Substances 0.000 claims abstract description 35
- 230000002093 peripheral effect Effects 0.000 claims abstract description 23
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005034 decoration Methods 0.000 description 5
- 239000002991 molded plastic Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
Abstract
The invention discloses a positioning structure for in-mold injection molding of a hardware insert, wherein a molding cavity for molding a plastic cover is arranged on the parting surface of a front mold and a rear mold of a mold, and a front mold core for molding the inner wall of the plastic cover is arranged on the front mold. The outer peripheral wall of the front mold core is sleeved with a friction ring, and the outer wall of the friction ring is sleeved with a metal decorative ring. The friction ring is provided with a locating ring on the matching surface of the inner peripheral wall of the friction ring and the outer peripheral wall of the front mold core, a plurality of back-off through holes for communicating the two end surfaces of the friction ring are arranged in the friction ring, and the bottom end of the plastic cover is provided with a back-off part formed in the back-off through holes. The invention has the beneficial effects that: according to the mold structure, the metal decorative ring is clamped into the friction ring, then the metal decorative ring and the friction ring are sleeved into the front mold core together, and the metal decorative ring is positioned through the positioning ring, so that the production of a product with the metal decorative ring embedded into the outer wall of the plastic cover can be met, the metal decorative ring, the friction ring and the plastic cover can be integrally injection molded, subsequent procedures are saved, and the production cost is greatly reduced.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to a positioning structure for in-mold injection of a hardware insert.
Background
When the plastic cover product is used, a requirement that a metal decorative ring is required to be embedded in the outer wall (such as a dustproof cover product of cosmetics) is usually required, and the conventional common practice is to mold the plastic cover product by injection molding, so that a groove for embedding the metal decorative ring is formed in the outer wall of the plastic cover, and then the metal decorative ring is forcibly sleeved in the groove during subsequent assembly, so that the design surface of the plastic cover is hard to damage or the metal decorative ring is damaged easily. In addition, when the existing plastic cover products are matched with the bottle body for use, a friction ring is usually required to be arranged on the friction surface of the plastic cover and the bottle body. The traditional plastic cover products also need a plurality of assembly procedures when in use, and can be formed by integrally injection molding the metal decorative ring, the friction ring and the plastic cover, so that procedures are saved, and the production cost is reduced. However, the existing injection mold for molding products with hardware inserts is generally only suitable for the situation that the hardware inserts are embedded in plastic products, and the situation that the metal decorative ring is sleeved on the outer wall of the plastic cover cannot realize positioning of the metal decorative ring, and a set of brand-new mold is needed to be designed to solve the problem.
Disclosure of Invention
Aiming at the problems existing in the prior art, the main purpose of the invention is to provide a positioning structure for in-mold injection molding of a hardware insert, which aims to solve the production problem that the existing injection mold cannot meet the requirement of products with metal decorative rings embedded on the outer wall of a plastic cover.
In order to achieve the above object, the positioning structure for in-mold injection molding of a hardware insert provided by the invention comprises: the plastic cover forming device comprises a front die and a rear die, wherein a forming cavity for forming the plastic cover is formed in the parting surface of the front die and the parting surface of the rear die, and a front die core for forming the inner wall of the plastic cover is arranged on the front die. The outer peripheral wall of the front mold core is sleeved with a friction ring, and the outer wall of the friction ring is sleeved with a metal decorative ring. The friction ring is provided with a locating ring on the matching surface of the inner peripheral wall of the friction ring and the outer peripheral wall of the front mold core, a plurality of back-off through holes for communicating the two end surfaces of the friction ring are arranged in the friction ring, and the bottom end of the plastic cover is provided with a back-off part formed in the back-off through holes.
Preferably, the friction ring is injection molded from POM material.
Preferably, the inner peripheral wall of the friction ring and the outer peripheral wall of the front mold core are both provided with grooves matched with the positioning ring.
Preferably, the positioning ring is a rubber ring.
Preferably, the outer peripheral wall of the friction ring is provided with a containing groove, and the metal decorative ring is arranged in the containing groove.
Preferably, the height of the bottom end of the friction ring is equal to the thickness of the bottom end of the metal decoration ring, and the height of the top end of the friction ring is smaller than the thickness of the top end of the metal decoration ring.
Preferably, the end face of the top end of the metal decorative ring is provided with a rough surface.
Preferably, the inverted through hole is a T-shaped hole.
Compared with the prior art, the invention has the beneficial effects that: according to the mold structure, the metal decorative ring is clamped into the friction ring, then the metal decorative ring and the friction ring are sleeved into the front mold core together, and the metal decorative ring is positioned through the positioning ring, so that the production of a product with the metal decorative ring embedded into the outer wall of the plastic cover can be met, the metal decorative ring, the friction ring and the plastic cover can be integrally injection molded, subsequent procedures are saved, and the production cost is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of a molded plastic cover according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a molded plastic cover according to an embodiment of the invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a perspective view of a friction ring according to an embodiment of the present invention;
FIG. 5 is a perspective view of a metal decorative ring according to an embodiment of the present invention;
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The invention provides a positioning structure for in-mold injection molding of a hardware insert.
Referring to fig. 1 to 5, fig. 1 is a sectional view of a mold plastic cover according to an embodiment of the present invention, fig. 2 is an enlarged view of the mold plastic cover according to an embodiment of the present invention, fig. 3 is a partial enlarged view of a portion of fig. 2, fig. 4 is a perspective view of a friction ring according to an embodiment of the present invention, and fig. 5 is a perspective view of a metal decorative ring according to an embodiment of the present invention.
As shown in fig. 1-3, in an embodiment of the present invention, the positioning structure for in-mold injection molding of a hardware insert includes: the plastic cover forming die comprises a front die 1 and a rear die 2, wherein a forming cavity for forming the plastic cover 3 is formed in the parting surface of the front die 1 and the parting surface of the rear die 2, and a front die core 4 for forming the inner wall of the plastic cover 3 is arranged on the front die 1. The friction ring 5 is sleeved on the peripheral wall of the front mold core 4, and the friction ring 5 is preferably formed by injection molding of POM materials, so that the wear resistance is good. As shown in fig. 3-4, the outer peripheral wall of the friction ring 5 is provided with a containing groove 6, and a metal decorative ring 7 is sleeved in the containing groove 6. Before injection molding, the metal decorative ring 7 is sleeved into the accommodating groove 6, so that the friction ring 5 and the metal decorative ring 7 can be preassembled together and then sleeved on the peripheral wall of the front mold core 4. The inner peripheral wall of the friction ring 5 and the outer peripheral wall of the front mold core 4 are both provided with grooves 8, and positioning rings 9 are placed in the grooves 8, so that when the friction ring 5 is sleeved on the front mold core 4, the positioning rings 9 are matched with the grooves 8 on the inner peripheral wall of the friction ring 5 and the outer peripheral wall of the front mold core 4 in place, and the pre-assembled friction ring 5 and the metal decorative ring 7 are positioned. In addition, the groove 8 on the inner peripheral wall of the friction ring 5 can be used as a clamping groove to clamp the bottle mouth of the bottle body matched with the groove for use, so that the bottle mouth is dustproof. The positioning ring 9 is preferably a rubber ring, the rubber ring is high-temperature resistant and small in deformation, the friction ring 5 cannot be scratched, and damping force can be provided for fixing the friction ring 5 after positioning. The height of friction ring 5 bottom equals with the thickness of metal decoration ring 7 bottom, and the height on friction ring 5 top is less than the thickness on metal decoration ring 7 top like this for friction ring 5's both ends have the difference in height, conveniently with the metal decoration ring 7 card go into friction ring 5's holding groove 6. As shown in fig. 3-4, a plurality of back-off through holes 10 for connecting two end faces of the friction ring 5 are formed in the friction ring, and during injection molding, glue flows into the back-off through holes 10, so that the bottom end of the molded plastic cover 3 is molded with a back-off part 11 in the back-off through holes 10, and the back-off part 11 tightly connects the friction ring 5 with the metal decorative ring 7. As shown in fig. 5, the end face of the top end of the metal decorative ring 7 is provided with a rough surface 12, and the rough surface 12 can enable the metal decorative ring 7 and the plastic cover 3 to have strong adhesive force, so that the connection between the metal decorative ring 7 and the plastic cover 3 is firmer. The reverse buckle through hole 10 is a T-shaped hole, which is convenient to process and can ensure enough anti-falling force.
Compared with the prior art, the invention has the beneficial effects that: according to the mold structure, the metal decorative ring 7 is clamped into the friction ring 5, then the metal decorative ring 7 and the friction ring 5 are sleeved into the front mold core 4 together, and the metal decorative ring 7 is positioned through the positioning ring 9, so that the production of a product with the metal decorative ring 7 embedded into the outer wall of the plastic cover 3 can be met, the metal decorative ring 7, the friction ring 5 and the plastic cover 3 can be integrally injection molded, subsequent procedures are saved, and the production cost is greatly reduced.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (6)
1. A positioning structure for in-mold injection molding of a hardware insert, comprising: the plastic cover forming device comprises a front die and a rear die, wherein a forming cavity for forming a plastic cover is formed in the parting surface of the front die and the parting surface of the rear die, and a front die core for forming the inner wall of the plastic cover is arranged on the front die; the front mold core is characterized in that a friction ring is sleeved on the peripheral wall of the front mold core, and a metal decorative ring is sleeved on the outer wall of the friction ring; a positioning ring is arranged on the matching surface of the inner peripheral wall of the friction ring and the outer peripheral wall of the front mold core, a plurality of back-off through holes for communicating the two end surfaces of the friction ring are arranged in the friction ring, and the bottom end of the plastic cover is provided with a back-off part in the back-off through holes;
the friction ring is formed by injection molding of POM material;
the inner peripheral wall of the friction ring and the outer peripheral wall of the front mold core are respectively provided with a groove matched with the positioning ring.
2. The in-mold injection positioning structure of claim 1, wherein the positioning ring is a rubber ring.
3. The positioning structure for in-mold injection molding of a hardware insert according to claim 1, wherein the outer peripheral wall of the friction ring is provided with a receiving groove, and the metal decorative ring is placed in the receiving groove.
4. The in-mold injection positioning structure of claim 3, wherein the friction ring bottom end has a height equal to the thickness of the metal decorative ring bottom end, and the friction ring top end has a height smaller than the thickness of the metal decorative ring top end.
5. The in-mold injection positioning structure of claim 4, wherein the end surface of the top end of the metal decorative ring is provided with a rough surface.
6. The in-mold injection positioning structure of hardware insert of any one of claims 1-5, wherein the inverted through hole is a T-shaped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310433411.9A CN116461046B (en) | 2023-04-17 | 2023-04-17 | Positioning structure for in-mold injection molding of hardware insert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310433411.9A CN116461046B (en) | 2023-04-17 | 2023-04-17 | Positioning structure for in-mold injection molding of hardware insert |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116461046A CN116461046A (en) | 2023-07-21 |
| CN116461046B true CN116461046B (en) | 2024-03-08 |
Family
ID=87174941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310433411.9A Active CN116461046B (en) | 2023-04-17 | 2023-04-17 | Positioning structure for in-mold injection molding of hardware insert |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116461046B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0079973A2 (en) * | 1981-11-19 | 1983-06-01 | Voplex Corporation | Extrusion/injection molding of trimmed product |
| GB8918549D0 (en) * | 1989-08-15 | 1989-09-27 | Lawson Mardon M I Ltd | Composite cap assembly and mould therefor |
| CN101537687A (en) * | 2008-03-21 | 2009-09-23 | 厦门建霖工业有限公司 | Method for molding a plastic cement connecting piece and die used therein |
| CN202189504U (en) * | 2011-02-28 | 2012-04-11 | 三星电子株式会社 | Metal mark installed on casing |
| CN102869211A (en) * | 2011-07-08 | 2013-01-09 | 深圳富泰宏精密工业有限公司 | Casing and manufacturing method thereof |
| KR20140031615A (en) * | 2012-09-05 | 2014-03-13 | 방창덕 | Container cap with hollowness part |
| CN104540340A (en) * | 2014-10-23 | 2015-04-22 | 深圳富泰宏精密工业有限公司 | Shell, electronic device applying shell and manufacturing method of shell |
| CN104717857A (en) * | 2015-03-13 | 2015-06-17 | 格林精密部件（惠州）有限公司 | Combination outer shell piece and in-mould injection molding method |
| CN204604743U (en) * | 2015-02-27 | 2015-09-02 | 江苏雨燕模业科技有限公司 | A kind of metal and plastic cement mixture manufacturing mould |
| KR20180058532A (en) * | 2016-11-24 | 2018-06-01 | 주식회사 지앤브이코스메틱 | Container that has an ornament |
| CN208197439U (en) * | 2018-05-14 | 2018-12-07 | 诺兰特移动通信配件（北京）有限公司 | A kind of rubber injection mold mold containing metal insert |
| CN111231231A (en) * | 2020-03-09 | 2020-06-05 | 深圳艾利佳材料科技有限公司 | Injection molding device of silica gel sealing member |
| CN112904041A (en) * | 2021-02-02 | 2021-06-04 | 上海加太尔汽车电子有限公司 | Coil sensor for automobile ABS system and production process thereof |
| KR20220046877A (en) * | 2020-10-08 | 2022-04-15 | 주식회사 재기에이엔피 | One-touch cap with ornament part |
| CN114905691A (en) * | 2021-02-08 | 2022-08-16 | 中西金属工业株式会社 | Insert molded article and method for producing same |
-
2023
- 2023-04-17 CN CN202310433411.9A patent/CN116461046B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0079973A2 (en) * | 1981-11-19 | 1983-06-01 | Voplex Corporation | Extrusion/injection molding of trimmed product |
| GB8918549D0 (en) * | 1989-08-15 | 1989-09-27 | Lawson Mardon M I Ltd | Composite cap assembly and mould therefor |
| CN101537687A (en) * | 2008-03-21 | 2009-09-23 | 厦门建霖工业有限公司 | Method for molding a plastic cement connecting piece and die used therein |
| CN202189504U (en) * | 2011-02-28 | 2012-04-11 | 三星电子株式会社 | Metal mark installed on casing |
| CN102869211A (en) * | 2011-07-08 | 2013-01-09 | 深圳富泰宏精密工业有限公司 | Casing and manufacturing method thereof |
| KR20140031615A (en) * | 2012-09-05 | 2014-03-13 | 방창덕 | Container cap with hollowness part |
| CN104540340A (en) * | 2014-10-23 | 2015-04-22 | 深圳富泰宏精密工业有限公司 | Shell, electronic device applying shell and manufacturing method of shell |
| CN204604743U (en) * | 2015-02-27 | 2015-09-02 | 江苏雨燕模业科技有限公司 | A kind of metal and plastic cement mixture manufacturing mould |
| CN104717857A (en) * | 2015-03-13 | 2015-06-17 | 格林精密部件（惠州）有限公司 | Combination outer shell piece and in-mould injection molding method |
| KR20180058532A (en) * | 2016-11-24 | 2018-06-01 | 주식회사 지앤브이코스메틱 | Container that has an ornament |
| CN208197439U (en) * | 2018-05-14 | 2018-12-07 | 诺兰特移动通信配件（北京）有限公司 | A kind of rubber injection mold mold containing metal insert |
| CN111231231A (en) * | 2020-03-09 | 2020-06-05 | 深圳艾利佳材料科技有限公司 | Injection molding device of silica gel sealing member |
| KR20220046877A (en) * | 2020-10-08 | 2022-04-15 | 주식회사 재기에이엔피 | One-touch cap with ornament part |
| CN112904041A (en) * | 2021-02-02 | 2021-06-04 | 上海加太尔汽车电子有限公司 | Coil sensor for automobile ABS system and production process thereof |
| CN114905691A (en) * | 2021-02-08 | 2022-08-16 | 中西金属工业株式会社 | Insert molded article and method for producing same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116461046A (en) | 2023-07-21 |
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