CN112959566A - Mold for molding rubber shell and manufacturing method thereof - Google Patents
Mold for molding rubber shell and manufacturing method thereof Download PDFInfo
- Publication number
- CN112959566A CN112959566A CN202110294103.3A CN202110294103A CN112959566A CN 112959566 A CN112959566 A CN 112959566A CN 202110294103 A CN202110294103 A CN 202110294103A CN 112959566 A CN112959566 A CN 112959566A
- Authority
- CN
- China
- Prior art keywords
- mold
- lower die
- core
- hole
- rubber shell
- 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.)
- Granted
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000003292 glue Substances 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000004513 sizing Methods 0.000 abstract 2
- 230000008602 contraction Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Images
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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a mould for molding a rubber shell and a manufacturing method thereof, wherein the mould comprises an upper mould and a lower mould; the upper die is provided with a through hole which penetrates downwards; the lower die is provided with a lower die core, the lower die core is connected with a driving device, and the driving device drives the ejector to move up and down; the lower mold core extends into the through hole of the upper mold, and a mold cavity for molding the rubber shell is formed between the outer surface of the lower mold core and the inner surface of the through hole; the lower die core is also provided with an ejection mechanism which can vertically and movably extend out of the top of the lower die core. The lower die core is connected with a driving device, and an ejection mechanism is also arranged in the lower die core; when the upper die is opened upwards, a gap formed between the sizing rubber shell and the inner surface of the through hole of the upper die is cooled for a certain time, and when the upper die is opened upwards, scratches cannot be generated on the outer surface of the sizing rubber shell, smooth demolding of the concave-convex surface is realized, the attractiveness of the rubber shell is improved, and no scratches or mold clamping lines exist on the surface.
Description
Technical Field
The invention relates to the technical field of rubber shells, in particular to a mold for molding a rubber shell and a manufacturing method thereof.
Background
Rubber shells are widely used as shells, for example: the shell of the mobile phone charging plug is usually a rubber shell. In the prior art, after glue is fed into a manufacturing mold of a rubber shell, an upper mold is directly opened upwards to eject a product, so that scratches are formed on the outer surface of the rubber shell, and the appearance of the outer surface of the rubber shell is affected; later, the mold with the left and right mold opening is also available, the problem that scratches are generated in an upward ejection mode is avoided, however, a mold clamping line can be formed on the side wall surface of the rubber shell through the left and right mold opening, the attractiveness of the rubber shell is affected, and time and labor are wasted and the production cost is increased if the mold clamping line is eliminated or covered by adopting a surface treatment mode subsequently.
Therefore, a new technical solution is needed to solve the above problems.
Disclosure of Invention
In view of the above, the present invention is directed to a mold for molding a plastic shell and a method for manufacturing the mold, which can solve the problem of scratches or mold lines on the outer surface of the plastic shell.
In order to achieve the purpose, the invention adopts the following technical scheme:
a mould for molding a rubber shell comprises an upper mould and a lower mould; wherein:
the upper die is provided with a through hole which penetrates downwards;
the lower die is provided with a lower die core, the lower die core is connected with a driving device, and the driving device drives the lower die core to move up and down; the lower mold core extends into the through hole of the upper mold, and a mold cavity for molding the rubber shell is formed between the outer surface of the lower mold core and the inner surface of the through hole;
and the lower die core is also internally provided with an ejection mechanism which can vertically and movably extend out of the top of the lower die core.
As a preferred scheme, the lower die is provided with a lower die core avoiding hole, and the lower die core avoiding hole is smaller than the through hole; the top of the lower die corresponds to the lower die core avoiding hole and is provided with a lower molded surface.
Preferably, the mold cavity has a top wall cavity and a peripheral side wall cavity communicating with the lower end of the periphery of the top wall cavity.
Preferably, the top of the upper die is provided with a glue inlet concave position.
Preferably, cooling pipelines are arranged in the upper die and the lower die, and the cooling pipelines are arranged around the outer periphery of the lower die core.
As a preferred scheme, the lower die core avoidance holes extend outwards from top to bottom in an inclined manner; correspondingly, the lower section part of the lower mold core extends outwards from top to bottom in an oblique manner.
As a preferred scheme, the ejection mechanism is provided with six ejection needles which are arranged in a square shape.
As a preferable scheme, the bottom of the upper die is convexly provided with a positioning convex part, and correspondingly, the top of the lower die is concavely provided with a positioning concave part.
The manufacturing method of a rubber shell adopts the mould for molding the rubber shell to manufacture the rubber shell; the method comprises the following steps:
firstly, injecting glue into a die cavity to form a pre-setting glue shell;
driving the lower mold core to move downwards to be far away from the preset plastic shell through the driving device, and keeping the ejection mechanism in the original position and ejecting the ejection mechanism to the inner bottom surface of the preset plastic shell while the lower mold core moves downwards;
thirdly, after cooling for a set time period, the pre-molded rubber shell shrinks inwards to form a molded rubber shell, and a gap is formed between the molded rubber shell and the inner surface of the through hole of the upper die;
and fourthly, opening the upper die upwards, and ejecting the shaped rubber shell upwards by the ejection mechanism.
Compared with the prior art, the invention has obvious advantages and beneficial effects, and specifically, the technical scheme includes that:
the mould mainly comprises an upper mould and a lower mould, wherein the lower mould core extends into a through hole of the upper mould, a mould cavity for forming a rubber shell is formed between the outer surface of the lower mould core and the inner surface of the through hole, the lower mould core is connected with a driving device, and an ejection mechanism is further arranged in the lower mould core, so that the rubber shell is hidden in the inner surface of the rubber shell in a downward and inward core pulling mode, when the upper mould is opened upwards, because the lower mould core avoids the preset rubber shell before contraction, an inward contraction deformation space is vacated for the lower mould core, a gap formed between the preset rubber shell and the inner surface of the through hole of the upper mould is formed, when the upper mould is opened upwards, the outer surface of the preset rubber shell cannot generate scratches, smooth demoulding of concave and convex surfaces is realized, the attractiveness of the rubber shell is improved, and no scratches or.
To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a perspective view of a preferred embodiment of the present invention;
FIG. 2 is an exploded view of the preferred embodiment of the present invention;
FIG. 3 is another exploded view of the preferred embodiment of the present invention;
FIG. 4 is a cross-sectional view of the preferred embodiment of the present invention.
The attached drawings indicate the following:
10. upper die 11, positioning boss
12. Glue inlet concave position
101. Through hole 20, lower die
21. Lower profile 22, positioning recess
201. Lower die core dodge hole 30 and lower die core
40. Ejection mechanism 41 and ejector pin
50. A rubber shell 60 and a cooling pipeline.
Detailed Description
Referring to fig. 1 to 4, a specific structure of a preferred embodiment of the present invention is shown, which includes an upper mold 10 and a lower mold 20; wherein:
the upper die 10 is provided with a through hole 101 which penetrates downwards;
the lower die 20 is provided with a lower die core 30, the lower die core 30 is connected with a driving device (not shown), and the driving device drives the lower die core 30 to move up and down; the lower mold core 30 extends into the through hole 101 of the upper mold 10, and a mold cavity for molding the rubber shell 50 is formed between the outer surface of the lower mold core 30 and the inner surface of the through hole 101;
the lower mold core 30 is also internally provided with an ejection mechanism 40, and the ejection mechanism 40 can vertically and movably extend out of the top of the lower mold core 30.
Specifically, the lower die 20 has a lower die core avoiding hole 201, and the lower die core avoiding hole 201 is smaller than the through hole 101; the top of the lower die 20 is provided with a lower molding surface 21 corresponding to the periphery of the lower die core avoidance hole 201, and the lower molding surface 21 is a placing surface at the bottom of the rubber shell 50;
and the top of the upper die 10 is provided with a glue inlet concave position 12.
Further, the die cavity is provided with a top wall cavity and a peripheral side wall cavity communicated with the lower end of the periphery of the top wall cavity; the bottom of the upper die 10 is convexly provided with a positioning convex part 11, and correspondingly, the top of the lower die 20 is concavely provided with a positioning concave part 22;
and cooling pipelines 60 are arranged in the upper die 10 and the lower die 20, and the cooling pipelines 60 are arranged around the outer periphery of the lower die core 30.
Preferably, the lower mold core avoidance hole 201 extends obliquely outwards from top to bottom; correspondingly, the lower section of the lower mold core 30 extends obliquely from top to bottom;
and, the cooling duct 60 located at the upper die 10 has two layers communicating up and down.
In addition, the ejection mechanism 40 has six ejection pins 41, and the ejection pins 41 are arranged in a square shape.
A method for manufacturing a rubber shell 50 comprises the following steps:
firstly, injecting glue into a die cavity to form a pre-shaping glue shell 50;
secondly, the lower mold core 30 is driven by the driving device to move downwards to be far away from the preset plastic shell 50, the lower mold core 30 normally descends to be equal to or lower than the lower molding surface 21, and the ejection mechanism 40 keeps in place and abuts against the inner bottom surface of the preset plastic shell 50 while the lower mold core 30 moves downwards;
thirdly, after cooling for a set period of time, the pre-shaped rubber shell 50 shrinks inwards to form the shaped rubber shell 50, and at the moment, a gap is formed between the shaped rubber shell 50 and the inner surface of the through hole 101 of the upper die 10;
and fourthly, opening the upper die 10 upwards, and ejecting the shaped rubber shell 50 upwards by the ejection mechanism 40.
The design of the invention is characterized in that:
the mould mainly comprises an upper mould and a lower mould, wherein the lower mould core extends into a through hole of the upper mould, a mould cavity for forming a rubber shell is formed between the outer surface of the lower mould core and the inner surface of the through hole, the lower mould core is connected with a driving device, and an ejection mechanism is further arranged in the lower mould core, so that the rubber shell is hidden in the inner surface of the rubber shell in a downward and inward core pulling mode, when the upper mould is opened upwards, because the lower mould core avoids the preset rubber shell before contraction, an inward contraction deformation space is vacated for the lower mould core, a gap formed between the preset rubber shell and the inner surface of the through hole of the upper mould is formed, when the upper mould is opened upwards, the outer surface of the preset rubber shell cannot generate scratches, smooth demoulding of concave and convex surfaces is realized, the attractiveness of the rubber shell is improved, and no scratches or.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (9)
1. The utility model provides a mould for shaping is glued shell which characterized in that: comprises an upper die and a lower die; wherein:
the upper die is provided with a through hole which penetrates downwards;
the lower die is provided with a lower die core, the lower die core is connected with a driving device, and the driving device drives the lower die core to move up and down; the lower mold core extends into the through hole of the upper mold, and a mold cavity for molding the rubber shell is formed between the outer surface of the lower mold core and the inner surface of the through hole;
and the lower die core is also internally provided with an ejection mechanism which can vertically and movably extend out of the top of the lower die core.
2. The mold for molding a rubber case as claimed in claim 1, wherein: the lower die is provided with a lower die core avoiding hole which is smaller than the through hole; the top of the lower die corresponds to the lower die core avoiding hole and is provided with a lower molded surface.
3. The mold for molding a rubber case as claimed in claim 1, wherein: the die cavity is provided with a top wall cavity and a peripheral side wall cavity communicated with the lower end of the periphery of the top wall cavity.
4. The mold for molding a rubber case as claimed in claim 1, wherein: the top of the upper die is provided with a glue inlet concave position.
5. The mold for molding a rubber case as claimed in claim 1, wherein: and cooling pipelines are arranged in the upper die and the lower die and surround the periphery of the lower die core.
6. The mold for molding a rubber case as claimed in claim 1, wherein: the lower die core avoidance hole extends outwards in an inclined manner from top to bottom; correspondingly, the lower section part of the lower mold core extends outwards from top to bottom in an oblique manner.
7. The mold for molding a rubber case as claimed in claim 1, wherein: the ejection mechanism is provided with six ejection needles which are arranged in a square shape.
8. The mold for molding a rubber case as claimed in claim 1, wherein: the bottom of the upper die is convexly provided with a positioning convex part, and correspondingly, the top of the lower die is concavely provided with a positioning concave part.
9. A method for manufacturing a rubber shell is characterized by comprising the following steps: manufacturing a rubber shell by using the mold for molding a rubber shell according to any one of claims 1 to 8; the method comprises the following steps:
firstly, injecting glue into a die cavity to form a pre-setting glue shell;
driving the lower mold core to move downwards to be far away from the preset plastic shell through the driving device, and keeping the ejection mechanism in the original position and ejecting the ejection mechanism to the inner bottom surface of the preset plastic shell while the lower mold core moves downwards;
thirdly, after cooling for a set time period, the pre-molded rubber shell shrinks inwards to form a molded rubber shell, and a gap is formed between the molded rubber shell and the inner surface of the through hole of the upper die;
and fourthly, completely opening the lower die downwards, and ejecting the molded rubber shell upwards by the ejection mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110294103.3A CN112959566B (en) | 2021-03-19 | 2021-03-19 | Mold for molding rubber shell and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110294103.3A CN112959566B (en) | 2021-03-19 | 2021-03-19 | Mold for molding rubber shell and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112959566A true CN112959566A (en) | 2021-06-15 |
| CN112959566B CN112959566B (en) | 2024-10-18 |
Family
ID=76279336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110294103.3A Active CN112959566B (en) | 2021-03-19 | 2021-03-19 | Mold for molding rubber shell and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112959566B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0524080A (en) * | 1991-07-22 | 1993-02-02 | Fuji Photo Film Co Ltd | Injection molding mold and injection molding method |
| JPH05154876A (en) * | 1991-12-03 | 1993-06-22 | Mitsubishi Materials Corp | Metal mold for molding case |
| JPH09239742A (en) * | 1996-03-08 | 1997-09-16 | Toto Ltd | Demolding of synthetic resin molded product |
| CN201143747Y (en) * | 2007-11-29 | 2008-11-05 | 比亚迪股份有限公司 | Stripping structure |
| CN102962925A (en) * | 2011-09-02 | 2013-03-13 | 大连高弘精密模具有限公司 | Push plate demoulding mechanism |
| CN203004148U (en) * | 2012-12-17 | 2013-06-19 | 滁州市精华模具制造有限公司 | Mould for molding door control switch box |
| CN203344222U (en) * | 2013-06-21 | 2013-12-18 | 牟维军 | Mold for product of cylinder with deep cavity and groove in wall |
| CN204997889U (en) * | 2015-09-28 | 2016-01-27 | 亿和塑胶电子制品(深圳)有限公司 | Knot takes off plastic mould by force in product |
| CN110842128A (en) * | 2019-12-18 | 2020-02-28 | 天津智威泰克成形技术有限公司 | Hub direct forging die and forging process thereof |
| CN111432996A (en) * | 2018-11-09 | 2020-07-17 | 株式会社技术可拉茨 | Undercut processing mechanism, molding die, and molded article |
| CN211467161U (en) * | 2019-12-27 | 2020-09-11 | 苏州东南洁具有限公司 | Bathtub forming die |
| CN215472482U (en) * | 2021-03-19 | 2022-01-11 | 东莞市星添模具有限公司 | Mould for forming rubber shell |
-
2021
- 2021-03-19 CN CN202110294103.3A patent/CN112959566B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0524080A (en) * | 1991-07-22 | 1993-02-02 | Fuji Photo Film Co Ltd | Injection molding mold and injection molding method |
| JPH05154876A (en) * | 1991-12-03 | 1993-06-22 | Mitsubishi Materials Corp | Metal mold for molding case |
| JPH09239742A (en) * | 1996-03-08 | 1997-09-16 | Toto Ltd | Demolding of synthetic resin molded product |
| CN201143747Y (en) * | 2007-11-29 | 2008-11-05 | 比亚迪股份有限公司 | Stripping structure |
| CN102962925A (en) * | 2011-09-02 | 2013-03-13 | 大连高弘精密模具有限公司 | Push plate demoulding mechanism |
| CN203004148U (en) * | 2012-12-17 | 2013-06-19 | 滁州市精华模具制造有限公司 | Mould for molding door control switch box |
| CN203344222U (en) * | 2013-06-21 | 2013-12-18 | 牟维军 | Mold for product of cylinder with deep cavity and groove in wall |
| CN204997889U (en) * | 2015-09-28 | 2016-01-27 | 亿和塑胶电子制品(深圳)有限公司 | Knot takes off plastic mould by force in product |
| CN111432996A (en) * | 2018-11-09 | 2020-07-17 | 株式会社技术可拉茨 | Undercut processing mechanism, molding die, and molded article |
| CN110842128A (en) * | 2019-12-18 | 2020-02-28 | 天津智威泰克成形技术有限公司 | Hub direct forging die and forging process thereof |
| CN211467161U (en) * | 2019-12-27 | 2020-09-11 | 苏州东南洁具有限公司 | Bathtub forming die |
| CN215472482U (en) * | 2021-03-19 | 2022-01-11 | 东莞市星添模具有限公司 | Mould for forming rubber shell |
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| Publication number | Publication date |
|---|---|
| CN112959566B (en) | 2024-10-18 |
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