CN113427714A - In-mold one-step molding injection mold and method for automotive interior trim part - Google Patents
In-mold one-step molding injection mold and method for automotive interior trim part Download PDFInfo
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- CN113427714A CN113427714A CN202110740551.1A CN202110740551A CN113427714A CN 113427714 A CN113427714 A CN 113427714A CN 202110740551 A CN202110740551 A CN 202110740551A CN 113427714 A CN113427714 A CN 113427714A
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- mold
- movable
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- 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
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- 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
- B29C45/1418—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 the inserts being deformed or preformed, e.g. by the injection pressure
- B29C45/14221—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 the inserts being deformed or preformed, e.g. by the injection pressure by tools, e.g. cutting means
Abstract
The invention discloses an in-mold one-step molding injection mold and a method for automotive interior parts, wherein the interior parts comprise thicker skins made of hard materials and plastic frames connected with the skins in an injection molding manner, and the one-step molding injection mold comprises: the movable mould and the cover half are arranged on a core on the cover half, the core is arranged on the movable mould, the cavity is arranged on the movable mould, the plurality of sliding blocks arranged at the periphery of the cavity and the driving mechanism of the sliding blocks are arranged on the sliding blocks, a cutter is further arranged on the sliding blocks, the molding method utilizes a low-pressure injection molding process to complete surface covering and trimming in the mould, the molding of a plastic frame and the fusion with the surface are realized, one-step molding in a product mould is realized, automotive interior parts are solved, and the problems of unstable covering quality, complex process, low efficiency, high cost and the like are solved especially under the conditions that the surface is thick and the material is hard partially, so that the production efficiency is effectively improved, the investment of equipment and a mould is reduced, the space is saved, the production cost is reduced, and the consistency of the product quality is effectively guaranteed.
Description
Technical Field
The invention relates to the field of mold injection, in particular to an injection mold and a method for one-step molding in an automobile interior trim part mold.
Background
For automotive interior spare, in order to improve demands such as the pleasing to the eye degree of its appearance and sense of touch, the combination of working of plastics and epidermis decoration is a very common product structural style in the present automotive interior spare, to the condition that the epidermis is thicker and the material is hard on the side, mainly adopts traditional manufacturing process at present, and the process divide into six steps, step one: producing a frame plastic part by an injection molding machine, and trimming a sprue; step two: the frame plastic part is vacuumized to exhaust small holes, the surface of the sand paper is polished, and punching scraps are removed; step three: coating glue on the surface of the frame plastic part, heating the plastic part in an oven after the glue is dried, and activating the glue to prepare for compounding the frame plastic part and the surface skin; step four: placing the processed frame plastic part and the skin into a vacuum composite die, and bonding the frame plastic part and the skin together through vacuum adsorption; step five: spraying glue in the edge covering area, and airing to prepare for edge covering; step six: and putting the product into a flanging mould to perform edge covering on the product, and removing the residual materials. The traditional manufacturing process has the disadvantages of complex flow and low production efficiency, and needs various large-scale equipment such as an injection molding machine, a PU spraying machine, a milling machine, a punching machine and the like, so that the equipment occupies large space, the product cost is high, and the quality is unstable.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide an in-mold one-step molding injection mold and a method for automotive upholstery.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an in-mold one-step molding injection mold of automotive interior spare, automotive interior spare include the epidermis and with the plastics frame that the epidermis is connected of moulding plastics, the epidermis divide into two-layerly, PVC layer promptly and with the PP layer that the PVC layer bonds, the thickness on PVC layer is 0.6mm, the thickness on PP layer is 0.5-4mm, one-step molding injection mold is low pressure injection mold, including movable mould and cover half, the movable mould includes: the bottom plate, with the fixed plate that the bottom plate is connected and with the movable mould board that the fixed plate is connected, be provided with the die cavity on the movable mould board, be provided with a plurality of hanging needle around the die cavity, the cover half includes: the hot runner plate is connected with the panel, the fixed die plate is connected with the hot runner plate, the ejection mechanism is arranged between the hot runner plate and the fixed die plate, the fixed die plate is provided with a core, a plurality of press blocks are arranged around the core, a plurality of slide blocks are further arranged on the periphery of the cavity, a plurality of driving mechanisms for controlling the movement of the slide blocks are correspondingly arranged on the movable die, a cutter is arranged on the slide blocks and below the corresponding position of the slide blocks along the edge of the matched die of the cavity and the core, and during matched die, the slide blocks are controlled by the driving mechanisms to advance to finish edge covering and utilize the cutter to cut the skin.
Wherein the drive mechanism comprises: an oil cylinder, a T-shaped hanging block, a guide block, a driving block, a T-shaped sliding block and a pressing plate, wherein the oil cylinder is fixedly arranged on the fixing plate, and longitudinally penetrates through the fixed plate and the movable template, an oil cylinder rod of the oil cylinder is connected with the T-shaped hanging block, the driving block is arranged below the T-shaped hanging block, the two are connected through a transverse T-shaped groove arranged at the upper end of the driving block, the guide block is longitudinally arranged on the movable template, a longitudinal T-shaped groove is arranged on the guide block, one side of the driving block is connected with the longitudinal T-shaped groove in a sliding way, an inclined T-shaped groove is arranged on the other side of the driving block, one side of the T-shaped sliding block is connected with the inclined T-shaped groove in a sliding manner, the other side of the T-shaped sliding block is fixedly connected with the sliding block, the pressing plates are arranged on two sides of the sliding block and are in sliding connection with the sliding block, and the pressing plates are fixedly arranged on the movable template.
The injection molding method by utilizing the one-step molding injection mold comprises the following steps:
1) mounting the surface skin on a cloth hanging needle of the movable template;
2) the injection molding machine closes the mold, the epidermis contacts the core of the fixed mold at first, and deform and move closely along with the shape of the core, subsequently, when the movable mold closes the mold to the predetermined distance, the briquetting of the side of the fixed mold will press the epidermis, continue closing the mold, prevent in this section closing the mold process, the epidermis corrugates;
3) continuously closing the dies, wherein when the movable die and the fixed die are spaced apart from each other before the dies are closed in place, the corresponding sliding blocks are sequentially controlled by the plurality of driving mechanisms to sequentially move forward in place, the movable die and the fixed die are continuously closed in place, the edge covering of the surface skin is realized in the process, and meanwhile, the cutter on the sliding blocks finishes the cutting of the excess material of the surface skin;
4) performing low-pressure injection molding to complete injection molding of the plastic frame, wherein the surface skin is adhered on the plastic frame in the process;
5) cooling, opening the die, ejecting the product and taking the product.
Compared with the prior art, the invention has the beneficial effects that:
the invention utilizes a low-pressure injection molding process to complete the edge wrapping and trimming of the surface skin, the molding of the plastic frame and the fusion with the surface skin in the mold, realizes the one-step molding of the product in the mold, solves the problems of unstable edge wrapping quality, complex process, low efficiency, high cost and the like of automotive interior parts, particularly under the condition that the surface skin is thick and the material is hard, effectively improves the production efficiency, reduces the investment of equipment and molds, saves the space, reduces the production cost and effectively ensures the consistency of the product quality.
Drawings
FIG. 1 is a schematic perspective view of a moving mold according to the present invention;
FIG. 2 is a schematic view of a fixed mold spatial structure of the present invention;
FIG. 3 is a schematic view of a partial three-dimensional structure of the movable mold and the fixed mold in a mold closing state according to the present invention;
FIG. 4 is a schematic view of the overall slider and drive mechanism configuration of the present invention;
FIG. 5 is a schematic perspective view of a slider and a driving mechanism according to the present invention;
FIG. 6 is a schematic view of a partially enlarged structure of a cutter on a slider according to the present invention;
FIG. 7 is a schematic perspective view of a guide block according to the present invention;
FIG. 8 is a first schematic perspective view of a driving block according to the present invention;
FIG. 9 is a schematic perspective view of a second driving block according to the present invention;
FIG. 10 is a schematic perspective view of a T-shaped slider according to the present invention.
In the figure: 1-a bottom plate; 2, fixing a plate; 3-moving the template; 31-a cavity; 32-a slide block; 321-a cutter; 33-a drive mechanism; 331-oil cylinder; 332-T type hanging block; 333-a guide block; 3331-longitudinal T-shaped groove; 334-drive block; 3341-transverse T-shaped groove; 3342-inclined T-shaped groove; 335-T type slide block; 336-a pressure plate; 4-a panel; 5-hot runner plate; 6-fixing a template; 61-core; 7-an ejection mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and more obvious, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1 to 10, the invention provides an in-mold one-step molding injection mold for an automotive interior part, the automotive interior part comprises a skin and a plastic frame connected with the skin in an injection molding manner, the skin is divided into two layers, namely a PVC layer and a PP layer bonded with the PVC layer, the thickness of the PVC layer is 0.6mm, the thickness of the PP layer is 0.5-4mm, the one-step molding injection mold is a low-pressure injection mold and comprises a movable mold and a fixed mold, and the movable mold comprises: bottom plate 1, with fixed plate 2 that bottom plate 1 is connected and with movable mould board 3 that fixed plate 2 is connected, be provided with die cavity 31 on the movable mould board 3, be provided with a plurality of hanging needle around the die cavity 31, the cover half includes: the hot runner plate 5 that the panel 4 is connected, the fixed die plate 6 that with the hot runner plate 5 is connected, and set up in hot runner plate 5 with ejection mechanism 7 between the fixed die plate 6, be provided with core 61 on the fixed die plate 6, be provided with a plurality of briquetting around the core 61, the periphery of die cavity 31 still is provided with a plurality of slider 32, it is provided with a plurality of control correspondingly on the movable mould slider 32 motion actuating mechanism 33, on the slider 32 and along its below with the edge correspondence department of die cavity 31 and core 61 compound die is provided with cutter 321, during the compound die, through actuating mechanism 33 control slider 32 gos forward, accomplishes borduring, and utilizes cutter 321 to cut the surface skin.
In this embodiment, the number of the sliding blocks 32 is set to 6, wherein 2 small sliding blocks 32 are respectively set at the left and right side ends of the periphery of the cavity 31, each small sliding block 32 is correspondingly provided with one set of the driving mechanism 33, one large sliding block 32 is respectively set at the two sides of the middle part of the periphery of the cavity 31, and each large sliding block 32 is correspondingly provided with 2 sets of the driving mechanisms 33, so as to ensure the stability of the driving process.
Specifically, the drive mechanism 33 includes: an oil cylinder 331, a T-shaped hanging block 332, a guide block 333, a driving block 334, a T-shaped sliding block 335 and a pressing plate 336, wherein the oil cylinder 331 is fixedly installed on the fixed plate 2 and vertically penetrates through the fixed plate 2 and the movable template 3, an oil cylinder rod of the oil cylinder 331 is connected with the T-shaped hanging block 332, the driving block 334 is arranged below the T-shaped hanging block 332 and is connected with the T-shaped hanging block through a transverse T-shaped groove 3341 arranged at the upper end of the driving block 334, the guide block 333 is longitudinally installed on the movable template 3, a longitudinal T-shaped groove 3331 is arranged on the guide block 333, one side of the driving block 334 is slidably connected with the longitudinal T-shaped groove 3331, an inclined T-shaped groove 3342 is arranged at the other side of the driving block 334, one side of the T-shaped sliding block 335 is slidably connected with the inclined T-shaped groove 3342, the other side of the T-shaped sliding block 32 is fixedly connected with the pressing plate 336 arranged at two sides of the sliding block 32, the two are connected in a sliding manner, and the pressing plate 336 is fixedly installed on the movable die plate 3.
The working process of the invention comprises the following steps:
1) mounting the surface skin on a cloth hanging needle of the movable template 3;
2) the injection molding machine closes the mold, the epidermis contacts the core 61 of the fixed mold at first, and along with the shape deformation of the core 61 and move closely to the core 61, subsequently, when the movable mold closes the mold to the predetermined distance, the briquetting of the fixed mold side will press the epidermis, continue closing the mold, prevent in this section closing the mold process, the epidermis corrugates;
3) continuously closing the dies, wherein when the distance between the movable die and the fixed die is a certain interval before the dies are closed in place, and the distance is set to be 0.5mm before the dies are closed in place, the six sliding blocks 32 sequentially move in place, the movable die and the fixed die are continuously closed in place, the edge covering of the surface skin is realized in the process, and meanwhile, the cutter 321 on the sliding blocks 32 finishes the cutting of the excess material of the surface skin;
4) performing low-pressure injection molding to complete injection molding of the plastic frame, wherein the surface skin is adhered on the plastic frame in the process;
5) cooling, opening the die, ejecting the product and taking the product;
the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. The utility model provides an in-mould one step molding injection mold of automotive interior spare which characterized in that: the automotive interior spare include the epidermis and with the plastics frame that the epidermis is moulded plastics and is connected, the epidermis divide into two-layerly, PVC layer promptly and with the PP layer that the PVC layer bonded, the thickness on PVC layer is 0.6mm, the thickness on PP layer is 0.5-4mm, one-step molding injection mold is low pressure injection mold, including movable mould and cover half, the movable mould includes: bottom plate (1), with fixed plate (2) that bottom plate (1) is connected and with movable mould board (3) that fixed plate (2) are connected, be provided with die cavity (31) on movable mould board (3), be provided with a plurality of around die cavity (31) and hang the needle, the cover half includes: a panel (4), a hot runner plate (5) connected with the panel (4), a fixed template (6) connected with the hot runner plate (5), and an ejection mechanism (7) provided between the hot runner plate (5) and the fixed die plate (6), a core (61) is arranged on the fixed die plate (6), a plurality of pressing blocks are arranged around the core (61), a plurality of sliding blocks (32) are arranged at the periphery of the cavity (31), a plurality of driving mechanisms (33) for controlling the sliding blocks (32) to move are correspondingly arranged on the movable die, a cutter (321) is arranged on the slide block (32) and below the position corresponding to the edge of the mold clamping of the cavity (31) and the mold core (61), when the mold clamping is carried out, the driving mechanism (33) controls the sliding block (32) to move forward to complete edge covering, and the cutting knife (321) is used for cutting the surface skin.
2. The in-mold one-step molding injection mold for automotive upholsteries according to claim 1, characterized in that: the drive mechanism (33) includes: hydro-cylinder (331), T type string piece (332), guide block (333), drive block (334), T type slider (335) and clamp plate (336), hydro-cylinder (331) fixed mounting be in on fixed plate (2), and it vertically passes fixed plate (2) and movable mould board (3), the hydro-cylinder pole of hydro-cylinder (331) is connected T type string piece (332), drive block (334) sets up the below of T type string piece (332), and both pass through horizontal T type groove (3341) that drive block (334) upper end set up are connected, guide block (333) vertically install in on movable mould board (3), be provided with vertical T type groove (3331) on guide block (333), one side of drive block (334) with vertical T type groove (3331) sliding connection, the opposite side of drive block (334) is provided with oblique T type groove (33335), one side of T type slider (331) with oblique T type groove (3342) sliding connection, the other side of the movable template is fixedly connected with the sliding block (32), the pressing plates (336) are arranged on two sides of the sliding block (32) and are in sliding connection with the sliding block, and the pressing plates (336) are fixedly arranged on the movable template (3).
3. A method for injection molding by using the in-mold one-step molding injection mold for automotive upholsteries of claim 1 or 2, characterized in that: the method comprises the following steps:
1) the surface skin is arranged on a cloth hanging needle of the movable template (3);
2) the injection molding machine closes the mold, the surface skin contacts the core (61) of the fixed mold at first, and along with the shape deformation of the core (61) and move close to the core (61), then, when the movable mold and the fixed mold close the predetermined distance, the pressing block at the side of the fixed mold can press the surface skin, continue closing the mold, prevent the surface skin from wrinkling during the closing process of the section of mold;
3) continuously closing the dies, wherein when the movable die and the fixed die are spaced apart from each other before the dies are closed in place, the corresponding sliding blocks (32) are sequentially controlled by the driving mechanisms (33) to sequentially move forward in place, the movable die and the fixed die are continuously closed in place, the covering of the surface skin is realized in the process, and meanwhile, the cutter (321) on the sliding blocks (32) finishes the cutting of the excess material of the surface skin;
4) performing low-pressure injection molding to complete injection molding of the plastic frame, wherein the surface skin is adhered on the plastic frame in the process;
5) cooling, opening the die, ejecting the product and taking the product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110740551.1A CN113427714A (en) | 2021-07-01 | 2021-07-01 | In-mold one-step molding injection mold and method for automotive interior trim part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110740551.1A CN113427714A (en) | 2021-07-01 | 2021-07-01 | In-mold one-step molding injection mold and method for automotive interior trim part |
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| CN113427714A true CN113427714A (en) | 2021-09-24 |
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| CN202110740551.1A Pending CN113427714A (en) | 2021-07-01 | 2021-07-01 | In-mold one-step molding injection mold and method for automotive interior trim part |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113829573A (en) * | 2021-10-12 | 2021-12-24 | 宁波方正汽车模具股份有限公司 | Automotive interior spare injection mold with automatic cloth cutting function |
| CN115179490A (en) * | 2022-07-18 | 2022-10-14 | 宁波建林模具有限公司 | Low-pressure injection mold for cutting fabric in mold |
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| JPH08174600A (en) * | 1994-12-27 | 1996-07-09 | Tokyo Seat Kk | Skin integral molding device |
| CN1128003A (en) * | 1994-05-03 | 1996-07-31 | 雷德尔有限公司 | Method for the manufacture of a multilayered object by moulding and mould for the manufacture of such an object |
| JP2006327043A (en) * | 2005-05-26 | 2006-12-07 | Kasai Kogyo Co Ltd | Manufacturing method of trim element for car |
| JP2007007898A (en) * | 2005-06-28 | 2007-01-18 | Nanjo Sobi Kogyo Kk | Molding method of resin product and molding apparatus used therein |
| CN105965768A (en) * | 2016-06-25 | 2016-09-28 | 湖南浩润汽车零部件有限公司 | Three-color external decoration strip for automobile windshield and forming mold and method thereof |
| CN208682019U (en) * | 2018-07-27 | 2019-04-02 | 重庆正泽汽车零部件有限公司 | A kind of cylinder slide block core pulling mutual interlocking gear |
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2021
- 2021-07-01 CN CN202110740551.1A patent/CN113427714A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1128003A (en) * | 1994-05-03 | 1996-07-31 | 雷德尔有限公司 | Method for the manufacture of a multilayered object by moulding and mould for the manufacture of such an object |
| JPH08174600A (en) * | 1994-12-27 | 1996-07-09 | Tokyo Seat Kk | Skin integral molding device |
| JP2006327043A (en) * | 2005-05-26 | 2006-12-07 | Kasai Kogyo Co Ltd | Manufacturing method of trim element for car |
| JP2007007898A (en) * | 2005-06-28 | 2007-01-18 | Nanjo Sobi Kogyo Kk | Molding method of resin product and molding apparatus used therein |
| CN105965768A (en) * | 2016-06-25 | 2016-09-28 | 湖南浩润汽车零部件有限公司 | Three-color external decoration strip for automobile windshield and forming mold and method thereof |
| CN208682019U (en) * | 2018-07-27 | 2019-04-02 | 重庆正泽汽车零部件有限公司 | A kind of cylinder slide block core pulling mutual interlocking gear |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113829573A (en) * | 2021-10-12 | 2021-12-24 | 宁波方正汽车模具股份有限公司 | Automotive interior spare injection mold with automatic cloth cutting function |
| CN115179490A (en) * | 2022-07-18 | 2022-10-14 | 宁波建林模具有限公司 | Low-pressure injection mold for cutting fabric in mold |
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Application publication date: 20210924 |