CN114683477B - Anti-melting injection mold system for double-color product and injection molding method thereof - Google Patents
Anti-melting injection mold system for double-color product and injection molding method thereof Download PDFInfo
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- CN114683477B CN114683477B CN202011613889.2A CN202011613889A CN114683477B CN 114683477 B CN114683477 B CN 114683477B CN 202011613889 A CN202011613889 A CN 202011613889A CN 114683477 B CN114683477 B CN 114683477B
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- injection
- mold
- product
- buckle
- injection molding
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- 238000002347 injection Methods 0.000 title claims abstract description 88
- 239000007924 injection Substances 0.000 title claims abstract description 88
- 238000001746 injection moulding Methods 0.000 title claims abstract description 41
- 238000002844 melting Methods 0.000 title claims abstract description 12
- 239000000049 pigment Substances 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000003086 colorant Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000003141 anti-fusion Effects 0.000 abstract description 6
- 230000000903 blocking effect Effects 0.000 abstract 3
- 238000000465 moulding Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1615—The materials being injected at different moulding stations
-
- 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
- B29C45/2602—Mould construction elements
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a bicolor product anti-fusion injection mold system and an injection molding method thereof, wherein the bicolor product anti-fusion injection mold system comprises a primary injection mold and a secondary injection mold, the primary injection mold comprises a first upper mold and a first lower mold, a plurality of sliding blocks are arranged at the upper end of the first lower mold, the sliding blocks slide into a first injection cavity along an axis and are mutually matched with the first upper mold and the first lower mold to form a buckle injection cavity, the secondary injection mold comprises a second upper mold and a second lower mold, the second upper mold is matched with one side of a transparent sheet, which is provided with a buckle, an avoidance groove is arranged on the second upper mold and is matched with the buckle, a blocking block is arranged on the second lower mold, the blocking block is attached to one side of the primary injection mold, which is far away from the buckle, and the second lower mold is mutually matched with the primary injection mold to form a second injection cavity of the secondary injection mold. According to the invention, the blocking block is arranged on the die below the buckle during secondary injection molding, so that the secondary pigment flow bypasses the area below the buckle, and the problem of melting at the position of the buckle when the transparent sheet covers the black sheet is solved.
Description
Technical Field
The invention relates to the technical field of car lamp injection molding, in particular to a bicolor product anti-fusing injection mold system and an injection molding method thereof.
Background
With the continuous development of the automobile industry, the demands of people are continuously changed from the aspect of basic functions to the aspect of appearance modeling, and the automobile lamp is used as an 'eye' of an automobile, which is the key point for improving the appearance modeling of the automobile. More and more complex structures are therefore being used in styling designs to meet the increasing aesthetic demands of people.
The bicolor product comprises a transparent sheet and a black sheet (which refers to colored), if the black sheet covers the transparent sheet, the transparent sheet is molded in a normal injection molding sequence, and the black sheet is molded in a second injection molding mode, so that the bicolor coverage requirement is met. However, if the transparent sheet is covered with the black sheet, the second injection molding of the transparent sheet may cause a melt phenomenon if the transparent sheet is injected in a conventional order. Namely, after the black sheet is subjected to pressure maintaining molding, the melted transparent particles can melt the first color product due to the excessively high material temperature and are flushed into the cavity along with the material flow. Causing product defects and even damaging the mold.
Therefore, to mold the transparent sheet-covered black sheet product, the mold designer usually considers the design method of the reverse mold, i.e., one color molding the transparent sheet and two colors covering the black sheet. However, in the actual design of the car lamp, the assembly requirement of the hand piece is considered in the product design, so that some buckling devices are designed on the outer side of the product. In contrast, the mold design also needs to arrange structures such as a sliding block and the like to carry out tripping treatment, so that when injection molding is produced, one-shot injection molding is completed, after the sliding block structure is separated, the lower part of the buckling position of the product is in an unsupported state, and then the phenomenon of flushing and melting can occur at the structural position during two-shot injection molding.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: in order to overcome the defect that the lower part of a product buckling position is in an unsupported state when a transparent sheet is subjected to two-color injection molding in the prior art, and then a fusing phenomenon can occur at the structural position, the invention provides a bicolor product anti-fusing injection mold system and an injection molding method thereof, which can solve the fusing phenomenon in the injection molding process of a bicolor cover product.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a bicolor product anti-fusion injection mold system, is equipped with a plurality of buckles on the primary injection product main part of bicolor product, the buckle is in the corner of primary injection product main part, including primary injection mould and secondary injection mould, primary injection mould includes first upper mould and first lower mould, first lower mould upper end sliding connection has a plurality of sliders, first upper mould and first lower mould mutually support and form the first injection cavity of primary injection product main part, the slider slides into along the axis first injection cavity with first upper mould and first lower mould mutually support and form buckle injection cavity,
The secondary injection mould comprises a second upper mould and a second lower mould, the primary injection product is arranged between the second upper mould and the second lower mould, the second upper mould is matched with one side of the primary injection product, which is provided with a buckle, the second upper mould is provided with an avoidance groove matched with the buckle, the second lower mould is provided with a plurality of plugging blocks, the plugging blocks are attached to one side of the primary injection product, which is far away from the buckle, the positions and the number of the plugging blocks are in one-to-one correspondence with the buckle, and the second lower mould is matched with the primary injection product to form a second injection cavity of the secondary injection product.
In the one-time injection molding process, the transparent sheet is molded, and because the buckle is designed at the local position, a mold designer needs to arrange a sliding block structure to ensure that the one-time injection molding product can be smoothly demolded. After the one-color pressure maintaining is finished, in the mold opening process, the sliding block mechanism completes the tripping movement, so that a clearance gap exists at the local position below, then a second color black sheet is injected, and the transparent sheet at the clearance position can not bear the temperature and the pressure of the second jet flow under the condition of no mold support because the black sheet is completely covered on the transparent sheet, thereby the problem of fusing or even bursting the product occurs, and the product yield is seriously reduced.
To improving product molding, a transparent piece of one color is visual face of outward appearance, forbid the change, consequently only can change the local position of two-color black piece, have the clearance for improving above-mentioned buckle below local position, under the condition that does not have the mould to support, take place two colours material and dash the problem of melting a transparent piece of one color easily, under the condition that does not influence product appearance, when moulding plastics for the second time, set up the shutoff piece on the mould of buckle below, when moulding plastics for the second time, make two colours material flow bypass under the buckle to when transparent piece covers the black piece, the problem of melting of buckle position department has been solved.
Further, in order to ensure that the product defect caused by the existence of a local fit clearance does not exist after the two-color injection molding is finished, the plugging block is of an L-shaped structure, the horizontal dimension of the plugging block is required to be 2-3 mm larger than the dimension of the avoidance groove opening, and the vertical distance is required to be 2-3 mm higher than the height of the root of the buckle.
The invention also provides an injection molding method of the bicolor product anti-fusion injection mold system,
Step one: the first upper die and the first lower die are clamped, the sliding block slides into the first injection cavity along the axis, a pigment is injected into the first injection cavity through the glue injection port, after the primary injection product is cooled and molded, the first upper die and the first lower die are opened, the sliding block moves along the axis in a direction away from the buckle to release, and then the primary injection product is taken out;
Step two: the method comprises the steps that an injection molding product is placed on a second lower die, the plugging block is attached to one side, away from a buckle, of the injection molding product, the plugging block is in one-to-one correspondence with the buckle, the second upper die and the second lower die are assembled, two pigments are injected below the injection molding product, two pigment material flows can bypass the plugging block, namely bypass the corresponding lower position of the buckle, so that the problem of melting is solved, the product percent of pass is effectively improved, and no obvious influence is caused on the appearance of the product.
The beneficial effects of the invention are as follows: according to the bicolor product anti-fusion injection mold system and the injection molding method thereof, the plugging block is arranged on the mold below the buckle during secondary injection molding, so that the two pigment flows bypass the area below the buckle, the problem of fusion at the position of the buckle when the transparent sheet covers the black sheet is solved, and the qualification rate of the product is greatly improved under the condition that the mold product is not changed.
Drawings
The invention is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a two-color product;
FIG. 2 is a schematic view of the structure of a primary injection mold;
FIG. 3 is a schematic view of a secondary injection mold;
Fig. 4 is a schematic view of the structure of the first lower die.
In the figure: 1. the double-color product comprises a double-color product 101, a primary injection molding product 102, a buckle 103, a secondary injection molding product 2, a primary injection mold 201, a first upper mold 202, a first lower mold 203, a sliding block 3, a secondary injection mold 301, a second upper mold 302, a second lower mold 303, an avoidance groove 4 and a plugging block.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings. The figure is a simplified schematic diagram illustrating the basic structure of the invention only by way of illustration, and therefore it shows only the constitution related to the invention.
As shown in fig. 1-4, in the dual-color product anti-melting injection mold system of the present invention, a plurality of buckles 102 are provided on a primary injection product 101 main body of a dual-color product 1, the buckles 102 are positioned at corners of the primary injection product 101 main body, the dual-color product anti-melting injection mold system comprises a primary injection mold 2 and a secondary injection mold 3, the primary injection mold 2 comprises a first upper mold 201 and a first lower mold 202, a plurality of sliding blocks 203 are slidably connected to the upper end of the first lower mold 202, the first upper mold 201 and the first lower mold 202 are mutually matched to form a first injection cavity of the primary injection product 101 main body, the sliding blocks 203 slide into the first injection cavity along an axis and are mutually matched with the first upper mold 201 and the first lower mold 202 to form a buckle 102 injection cavity,
The secondary injection mold 3 comprises a second upper mold 301 and a second lower mold 302, the primary injection product 101 is arranged between the second upper mold 301 and the second lower mold 302, the second upper mold 301 is matched with one side of the primary injection product 101, which is provided with a buckle 102, the second upper mold 301 is provided with an avoidance groove 303 matched with the buckle 102, the second lower mold 302 is provided with a plurality of plugging blocks 4, the plugging blocks 4 are attached to one side of the primary injection product 101, which is far away from the buckle 102, the positions and the numbers of the plugging blocks 4 are in one-to-one correspondence with the buckle 102, the plugging blocks 4 are in welded connection with the second lower mold 302, and the second lower mold 302 is mutually matched with the primary injection product 101 to form a second injection cavity of the secondary injection product 103.
The plugging block 4 is of an L-shaped structure, the dimension of the plugging block 4 in the horizontal direction is required to be 2-3 mm larger than the dimension of the opening of the avoidance groove 303, and the distance in the vertical direction is required to be 2-3 mm higher than the root of the buckle 102.
An injection molding method of a bicolor product anti-fusion injection mold system comprises the following steps:
Step one: the first upper die 201 and the first lower die 202 are clamped, the sliding block 203 slides into the first injection cavity along the axis, a pigment is injected into the first injection cavity through the glue injection port, after the primary injection product 101 is cooled and molded, the first upper die 201 and the first lower die 202 are opened, the sliding block 203 moves along the axis in a direction away from the buckle 102 to release, and then the primary injection product 101 is taken out;
Step two: the primary injection molding product 101 is placed on the second lower die 302, the plugging block 4 is attached to one side, far away from the buckle 102, of the primary injection molding product 101, the position and the number of the plugging blocks 4 are in one-to-one correspondence with the buckle 102, the second upper die 301 and the second lower die 302 are matched, two pigments are injected below the primary injection molding product 101, the two pigments flow can bypass the plugging block 4, namely bypass the corresponding lower position of the buckle 102, so that the problem of melting is solved, the product percent of pass is effectively improved, and no obvious influence is caused on the appearance of the product.
Directions and references (e.g., up, down, left, right, etc.) in this invention may be used only to aid in the description of features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (2)
1. The utility model provides a double-colored product protection against heat melts injection mold system, is equipped with a plurality of buckles (102) in the primary injection product (101) main part of double-colored product (1), buckle (102) are in the corner of primary injection product (101) main part, its characterized in that: the injection molding device comprises a primary injection mold (2) and a secondary injection mold (3), wherein the primary injection mold (2) comprises a first upper mold (201) and a first lower mold (202), a plurality of sliding blocks (203) are connected to the upper end of the first lower mold (202) in a sliding manner, the first upper mold (201) and the first lower mold (202) are matched with each other to form a first injection molding cavity of a primary injection molding product (101) main body, and the sliding blocks (203) slide into the first injection molding cavity along an axis to be matched with the first upper mold (201) and the first lower mold (202) to form a buckle (102) injection molding cavity;
The secondary injection mold (3) comprises a second upper mold (301) and a second lower mold (302), the primary injection product (101) is arranged between the second upper mold (301) and the second lower mold (302), the second upper mold (301) is matched with one side of the primary injection product (101) provided with a buckle (102), the second upper mold (301) is provided with an avoidance groove (303) matched with the buckle (102), the second lower mold (302) is provided with a plurality of plugging blocks (4), the plugging blocks (4) are attached to one side of the primary injection product (101) away from the buckle (102), the positions and the number of the plugging blocks (4) are in one-to-one correspondence with those of the buckle (102), and the second lower mold (302) is matched with the primary injection product (101) to form a second injection cavity of the secondary injection product (103);
The plugging block (4) is of an L-shaped structure, the dimension requirement in the horizontal direction of the plugging block (4) is required to be larger than the dimension of the opening of the avoidance groove (303) by 2-3 mm, and the distance requirement in the vertical direction is required to be higher than the root height of the buckle (102) by 2-3 mm.
2. An injection molding method of a bicolor product anti-melting injection mold system is characterized by comprising the following steps of: the injection molding method using the two-color product anti-melt injection mold system of claim 1, the injection molding method comprising the steps of:
step one: the first upper die (201) and the first lower die (202) are clamped, the sliding block (203) slides into the first injection cavity along the axis, a pigment is injected into the first injection cavity through the glue injection port, after the primary injection product (101) is cooled and molded, the first upper die (201) and the first lower die (202) are opened, the sliding block (203) moves along the axis in the direction away from the buckle (102) to release, and then the primary injection product (101) is taken out;
Step two: put once injection molding product (101) on second lower mould (302), shutoff piece (4) paste and locate one side that buckle (102) was kept away from to once injection molding product (101), shutoff piece (4) position and quantity and buckle (102) one-to-one, mould compound second pigment with second upper mould (301) and second lower mould (302), mould plastics two colours towards once injection molding product (101) below, two colours material flows can bypass shutoff piece (4), bypass the corresponding below position of buckle (102) promptly to solved the problem of dashing and melting, and the product percent of pass has obtained effectual promotion, does not have obvious influence to the outward appearance of product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011613889.2A CN114683477B (en) | 2020-12-30 | 2020-12-30 | Anti-melting injection mold system for double-color product and injection molding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011613889.2A CN114683477B (en) | 2020-12-30 | 2020-12-30 | Anti-melting injection mold system for double-color product and injection molding method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114683477A CN114683477A (en) | 2022-07-01 |
| CN114683477B true CN114683477B (en) | 2024-05-17 |
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| CN202011613889.2A Active CN114683477B (en) | 2020-12-30 | 2020-12-30 | Anti-melting injection mold system for double-color product and injection molding method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100846741B1 (en) * | 2007-11-28 | 2008-07-17 | 범진공업 (주) | A injection mold for preventing from change of color by regulation of thickness |
| CN102922668A (en) * | 2012-11-01 | 2013-02-13 | 东莞劲胜精密组件股份有限公司 | Waterproof silica gel injection mold structure |
| CN210999819U (en) * | 2019-09-02 | 2020-07-14 | 华域视觉科技(上海)有限公司 | Injection mold for light distribution lens of double-color car lamp |
| CN211492559U (en) * | 2019-11-29 | 2020-09-15 | 金裕泰(惠州)实业有限公司 | Continuous transition different-color shell injection mold |
| CN214294136U (en) * | 2020-12-30 | 2021-09-28 | 常州星宇车灯股份有限公司 | Double-colored product scour protection melts injection mold system |
-
2020
- 2020-12-30 CN CN202011613889.2A patent/CN114683477B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100846741B1 (en) * | 2007-11-28 | 2008-07-17 | 범진공업 (주) | A injection mold for preventing from change of color by regulation of thickness |
| CN102922668A (en) * | 2012-11-01 | 2013-02-13 | 东莞劲胜精密组件股份有限公司 | Waterproof silica gel injection mold structure |
| CN210999819U (en) * | 2019-09-02 | 2020-07-14 | 华域视觉科技(上海)有限公司 | Injection mold for light distribution lens of double-color car lamp |
| CN211492559U (en) * | 2019-11-29 | 2020-09-15 | 金裕泰(惠州)实业有限公司 | Continuous transition different-color shell injection mold |
| CN214294136U (en) * | 2020-12-30 | 2021-09-28 | 常州星宇车灯股份有限公司 | Double-colored product scour protection melts injection mold system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114683477A (en) | 2022-07-01 |
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