CN110406048B - Compression molding tool for automobile hatchback door inner decoration plate - Google Patents
Compression molding tool for automobile hatchback door inner decoration plate Download PDFInfo
- Publication number
- CN110406048B CN110406048B CN201910649214.4A CN201910649214A CN110406048B CN 110406048 B CN110406048 B CN 110406048B CN 201910649214 A CN201910649214 A CN 201910649214A CN 110406048 B CN110406048 B CN 110406048B
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- movable block
- die
- mold
- cavity
- core
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- 238000005034 decoration Methods 0.000 title abstract description 6
- 238000000748 compression moulding Methods 0.000 title description 3
- 238000002347 injection Methods 0.000 claims abstract description 29
- 239000007924 injection Substances 0.000 claims abstract description 29
- 238000001746 injection moulding Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 abstract description 19
- 239000004831 Hot glue Substances 0.000 abstract description 7
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
-
- 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
- B29C45/34—Moulds having venting means
-
- 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
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
- B29L2031/3014—Door linings
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a pressing and injecting die for an automobile hatchback door inner decoration plate, which comprises a front die, a rear die, a movable block driving mechanism and an exhaust groove, wherein a rear die cavity is arranged in the rear die, and the rear die cavity and the rear die are of an integrated structure. The front mold is internally provided with a front mold core, and the front mold core is matched with the rear mold cavity to form an injection molding cavity. The movable block is arranged on the rear die and is of a closed annular structure. The movable block is movably arranged on the parting surface of the rear mold in an inlaid mode, and the rear mold cavity is positioned at the inner side of the movable block. The movable block driving mechanism is arranged in the rear die, and the movable end of the movable block driving mechanism is fixedly connected with the bottom of the movable block to drive the movable block to move relative to the rear die. According to the invention, the thickness of the injection molding cavity is increased through the movable block, the thickness of the injection molding cavity is reduced after the injection of the glue is completed, the filling resistance during the glue injection is small, the hot glue can be conveniently and rapidly filled, the air mark of the appearance surface of a product piece is eliminated, the rejection rate is reduced, and the product quality is improved.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to a pressing injection mold for an inner decorative plate of an automobile hatchback door.
Background
The automobile hatchback door internal decorative plate is a thin-wall injection molding part, the whole area of the automobile hatchback door internal decorative plate is large, the wall thickness is about 1.8mm, when the automobile hatchback door internal decorative plate is produced by using a common injection mold, glue injection resistance is large, the thin-wall position is cooled first, so that the filling capacity is poor, the defect that the flowing material cannot be completely filled in the part of a product part occurs, meanwhile, air marks can occur on the appearance surface of the product, the quality requirement cannot be met, the product is scrapped, and the yield is low. If the glue injection pressure is increased, the flash of the product piece is caused, and the requirement on the product piece cannot be met. Therefore, for injection molding of an inner trim of a thin-wall automobile hatchback door, it is necessary to develop a mold capable of reducing filling resistance, improving filling ability, and eliminating air marks on an outer surface.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a compression-molding die for an automobile hatchback door inner decoration plate, which solves the problems of high filling resistance, poor filling capability, air mark generation on an appearance surface and high rejection rate caused by thin wall of the automobile hatchback door inner decoration plate in the injection molding process.
In order to solve the technical problems, the invention adopts the following technical scheme:
a press-injection mould for an automobile hatchback door inner decoration plate comprises a front mould, a rear mould, a movable block driving mechanism and an exhaust groove, wherein a rear mould cavity is arranged in the rear mould, and the rear mould cavity and the rear mould are of an integrated structure. The front mold is internally provided with a front mold core, and the front mold core is matched with the rear mold cavity to form an injection molding cavity. The movable block is arranged on the rear die and is of a closed annular structure. The movable block is movably arranged on the parting surface of the rear mold in an inlaid mode, and the rear mold cavity is positioned at the inner side of the movable block. The movable block driving mechanism is arranged in the rear die, and the movable end of the movable block driving mechanism is fixedly connected with the bottom of the movable block to drive the movable block to move relative to the rear die.
Preferably, a rear die holder is arranged below the rear die, and the rear die holder is fixedly connected with the rear die. A front die holder is arranged above the front die, and is fixedly connected with the front die.
Preferably, the upper surface of movable block is provided with a plurality of guide posts, is equipped with on the die joint of front mould and equals and the guide pillar slot that the position corresponds with guide post quantity, and guide pillar slot all is located the outside of front mould core.
Preferably, the movable block driving mechanism comprises a needle plate, a straight ejector rod and an oil cylinder, wherein the needle plate is movably arranged below the rear die, and the needle plate is fixedly connected with the bottom of the movable block through the straight ejector rod. The oil cylinder is fixedly arranged on the rear die, a piston rod of the oil cylinder is fixedly connected with the needle plate, and the movable block is driven to move relative to the rear die through the needle plate.
Preferably, a plurality of core print seats are sequentially arranged on the inner wall at one side of the movable block at intervals, and the core print seats are movably arranged in the rear model cavity in a mosaic mode. The core print seat and the movable block are fixed into an integrated structure, and a core for forming a strip-shaped mounting hole on the edge of the inner trim plate of the back door of the automobile is arranged at the top of the core print seat.
Preferably, the upper surface of the movable block is provided with an exhaust groove which can only pass through gas, and after the movable block contacts with the parting surface of the front die, the inner wall of the exhaust groove is matched with the parting surface of the front die to form a gas circulation groove.
Preferably, the depth of the vent groove is 0.02mm.
Preferably, the inner side wall of the movable block is matched with and abuts against the edge of the injection molding cavity, and the upper surface of the movable block is in sealing fit with the parting surface of the front mold.
By adopting the technical scheme, the invention has the beneficial technical effects that: according to the invention, the thickness of the injection molding cavity is increased through the movable block, the thickness of the injection molding cavity is reduced after the injection of the glue is completed, the filling resistance during the glue injection is small, the hot glue can be conveniently and rapidly filled, the air mark of the appearance surface of a product piece is eliminated, the rejection rate is reduced, and the product quality is improved.
Drawings
Fig. 1 is a schematic structural view of a die and a front die holder in the technical scheme of the invention.
Fig. 2 is a schematic structural view of a rear mold and a rear mold base in the technical scheme of the present invention.
Fig. 3 is a schematic diagram of the combined structure of the movable block and the movable block driving mechanism of the present invention.
Fig. 4 is a top view of the combined structure of the movable block and the movable block driving mechanism in fig. 3.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
referring to fig. 1 to 4, a pressing and injecting mold for an automobile hatchback door trim panel comprises a front mold 1, a rear mold 2, a movable block 3, a movable block driving mechanism 4 and an exhaust groove, wherein a rear mold cavity 21 is formed in the rear mold 2, the rear mold cavity 21 and the rear mold 2 are of an integral structure, and the rear mold cavity 21 is matched with an appearance surface of an automobile hatchback door trim panel product piece. The front mold 1 is internally provided with a front mold core 11, and the front mold core 11 and the rear mold cavity 21 are matched to form an injection molding cavity. A rear die holder 22 is arranged below the rear die 2, and the rear die holder 22 is fixedly connected with the rear die 2. A front die holder 12 is arranged above the front die 1, and the front die holder 12 is fixedly connected with the front die 1. The front mould 1 is fixed on the injection moulding machine through a front mould base 12, the rear mould 2 is fixed on the injection moulding machine through the front mould base 12, and the injection moulding machine controls the front mould 1 and the rear mould 2 to open or close.
The movable block 3 is arranged on the rear die 2, and the movable block 3 is of a closed annular structure. The movable block 3 is movably arranged on the parting surface of the rear mold 2 in an inlaid manner, and the rear mold cavity 21 is positioned on the inner side of the movable block 3. The movable block driving mechanism 4 is arranged in the rear die 2, and the movable end of the movable block driving mechanism 4 is fixedly connected with the bottom of the movable block 3 to drive the movable block 3 to move relative to the rear die 2. The inner side wall of the movable block 3 is matched with the edge of the injection molding cavity and abuts against the edge of the injection molding cavity, and the upper surface of the movable block 3 is in sealing fit with the parting surface of the front mold 1.
The movable block driving mechanism 4 comprises a needle plate 41, a straight ejector rod 42 and an oil cylinder 43, wherein the needle plate 41 is movably arranged below the rear die 2, and the needle plate 41 is fixedly connected with the bottom of the movable block 3 through the straight ejector rod 42. Four straight ejector rods 42 are arranged between the movable block 3 and the needle plate 41 in a square shape, one end of each straight ejector rod 42 is fixedly connected with the needle plate 41, and the other end of each straight ejector rod 42 is fixedly connected with the movable block 3. The oil cylinder 43 is fixedly arranged on the rear die 2, a piston rod of the oil cylinder 43 is fixedly connected with the needle plate 41, and the movable block 3 is driven to move relative to the rear die 2 through the needle plate 41. Four oil cylinders 43 are arranged, the four oil cylinders 43 are square and fixed on the rear die 2, the four oil cylinders 43 synchronously stretch and retract, and the needle plate 41 is driven to translate relative to the rear die 2.
Four guide posts 31 are arranged on the upper surface of the movable block 3, the guide posts 31 are protruding posts with wedge structures, four guide post slots 51 are arranged on the parting surface 5 of the front mold 1, the guide post slots 51 are wedge grooves matched with the guide posts 31, the four guide post slots 51 are respectively matched with the four guide posts 31 in a one-to-one correspondence manner, and the guide post slots 51 are all positioned on the outer side of the front mold core 11.
Six core prints 6 are sequentially arranged on the inner wall of one side of the movable block 3 at intervals, and the core prints 6 are movably arranged in the rear model cavity 21 in an inlaid mode. One side of the core print seat 6 is connected with the movable block 3 into an integral structure, and a core 61 for forming a strip-shaped mounting hole of the edge of the inner trim plate of the back door of the automobile is arranged at the top of the core print seat 6. The upper surface of the movable block 3 is provided with an exhaust groove which can only pass through gas, and the depth of the exhaust groove is 0.02mm. After the movable block 3 contacts with the parting surface of the front mold 1, an air circulation groove is formed on the inner wall of the air exhaust groove in a matching mode with the parting surface of the front mold 1. In the use state, the gas in the injection molding cavity can be discharged to the outside of the mold through the exhaust groove, and the hot glue in the injection molding cavity cannot pass through the exhaust groove.
The working principle of the invention is as follows: before the front mold 1 and the rear mold 2 are clamped, the movable block 3 is in a convex state. The rear mould 2 and the movable block 3 are kept static, the front mould 1 moves towards the rear mould 2 under the action of the injection molding machine, and is firstly contacted with the surface of the movable block 3, the front mould 1, the rear mould 2 and the movable block 3 form a closed glue injection cavity, and the thickness of the glue injection cavity between the front mould core 11 and the rear mould cavity 21 is 2.8mm. Injecting hot glue into the glue injection cavity through the pouring gate positioned in the middle of the rear mould 2, wherein the glue injection quantity is the glue consumption for forming an automobile hatchback door inner decorative plate product piece, the volume of the glue injection cavity is larger than that of the hot glue in the glue injection cavity, and part of gas in the glue injection cavity is discharged to the outside of the mould through the exhaust groove in the glue injection process.
After the glue injection is completed, the front mould 1 starts to move towards the rear mould 2 again, at this time, the oil cylinder 43 drives the movable block 3 to move towards one side of the rear mould 2 through the needle plate 41 and the straight ejector rod 42, the movement of the front mould 1 is synchronous with the movement of the movable block 3, the surface of the movable block 3 is always pressed on the parting surface of the front mould 1, hot glue is prevented from being pressed out from the surface of the movable block 3, in the synchronous movement process of the front mould 1 and the movable block 3, the glue injection cavity is gradually reduced, and gas in the glue injection cavity is continuously discharged to the outside of the mould from the exhaust groove. When the thickness between the front mold core 11 and the rear mold cavity 21 is 1.8mm, the front mold 1 and the movable block 2 stop moving, the injection cavity becomes the injection cavity, the whole injection cavity is filled with hot glue, and the gas in the injection cavity is exhausted. After cooling, the front mould 1 and the rear mould 2 are opened, the manipulator takes away the product piece of the inner decorative plate of the back door of the automobile, and the movable block 3 is in a state before the mould is closed under the action of the movable block driving mechanism 4 and waits for the next mould closing and glue injection.
The parts not described in the invention can be realized by adopting or referring to the prior art.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that the invention is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the invention.
Claims (3)
1. The injection mold for the automobile hatchback door inner decorative plate comprises a front mold, a rear mold, a movable block driving mechanism and an exhaust groove, and is characterized in that a rear mold cavity is arranged in the rear mold, and the rear mold cavity and the rear mold are of an integrated structure; the front mold is internally provided with a front mold core, and the front mold core is matched with the rear mold cavity to form an injection molding cavity; the movable block is arranged on the rear die and is of a closed annular structure; the movable block is movably arranged on the parting surface of the rear mold in an embedding manner, and the rear mold cavity is positioned at the inner side of the movable block; the movable block driving mechanism is arranged in the rear die, and the movable end of the movable block driving mechanism is fixedly connected with the bottom of the movable block to drive the movable block to move relative to the rear die;
the upper surface of the movable block is provided with a plurality of guide posts, the parting surface of the front die is provided with guide post slots which are equal to the guide posts in number and corresponding to the guide posts in position, and the guide post slots are all positioned at the outer side of the front die core;
the movable block driving mechanism comprises a needle plate, a straight ejector rod and an oil cylinder, wherein the needle plate is movably arranged below the rear die, and the needle plate is fixedly connected with the bottom of the movable block through the straight ejector rod; the oil cylinder is fixedly arranged on the rear die, a piston rod of the oil cylinder is fixedly connected with the needle plate, and the movable block is driven to move relative to the rear die through the needle plate;
the inner wall of one side of the movable block is sequentially provided with a plurality of core prints at intervals, and the core prints are movably arranged in the rear model cavity in a mosaic mode; the core print seat and the movable block are fixed into an integrated structure, and a core for forming a strip mounting hole on the edge of the inner trim plate of the back door of the automobile is arranged at the top of the core print seat;
the upper surface of the movable block is provided with an exhaust groove which only can pass through gas, and after the movable block contacts with the parting surface of the front die, the inner wall of the exhaust groove is matched with the parting surface of the front die to form a gas circulation groove;
the inner side wall of the movable block is matched with the edge of the injection molding cavity and abuts against the edge of the injection molding cavity, and the upper surface of the movable block is in sealing fit with the parting surface of the front mold.
2. The injection mold for the interior trim panel of the automobile hatchback door according to claim 1, wherein a rear mold base is arranged below the rear mold, and the rear mold base is fixedly connected with the rear mold; a front die holder is arranged above the front die, and is fixedly connected with the front die.
3. The injection mold for an automotive hatchback door trim panel according to claim 1, wherein the depth of said vent groove is 0.02mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910649214.4A CN110406048B (en) | 2019-07-18 | 2019-07-18 | Compression molding tool for automobile hatchback door inner decoration plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910649214.4A CN110406048B (en) | 2019-07-18 | 2019-07-18 | Compression molding tool for automobile hatchback door inner decoration plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110406048A CN110406048A (en) | 2019-11-05 |
| CN110406048B true CN110406048B (en) | 2024-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910649214.4A Active CN110406048B (en) | 2019-07-18 | 2019-07-18 | Compression molding tool for automobile hatchback door inner decoration plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110406048B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111186074B (en) * | 2020-01-13 | 2021-10-22 | 宁波方正汽车模具股份有限公司 | Positioning mechanism of injection mold for automotive composite interior trim part |
| CN114474582A (en) * | 2020-10-23 | 2022-05-13 | 北京小米移动软件有限公司 | Die set |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201633175U (en) * | 2010-02-22 | 2010-11-17 | 宇科模具(厦门)有限公司 | Translation type two-color mould |
| KR20110108915A (en) * | 2010-03-30 | 2011-10-06 | 한국생산기술연구원 | Injection compression mold that have moved core that form cavity |
| CN106466909A (en) * | 2015-08-16 | 2017-03-01 | 天津市新海塑料包装有限公司 | A kind of novel injection molding machine equipment |
| CN107310105A (en) * | 2017-08-19 | 2017-11-03 | 成都市联余精密机械有限公司 | A kind of delayed ejection mould structure for realizing milk powder cover mold inner poster |
| CN207224524U (en) * | 2017-09-21 | 2018-04-13 | 深圳市欧丽塑胶原材料有限公司 | A kind of horizontal injection press |
| CN109501151A (en) * | 2018-12-29 | 2019-03-22 | 青岛海泰科模具有限公司 | Car thin-wall door-plate injection mold |
| CN210283107U (en) * | 2019-07-18 | 2020-04-10 | 青岛海泰科模具有限公司 | Injection molding die for automotive hatchback door interior trim panel |
-
2019
- 2019-07-18 CN CN201910649214.4A patent/CN110406048B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201633175U (en) * | 2010-02-22 | 2010-11-17 | 宇科模具(厦门)有限公司 | Translation type two-color mould |
| KR20110108915A (en) * | 2010-03-30 | 2011-10-06 | 한국생산기술연구원 | Injection compression mold that have moved core that form cavity |
| CN106466909A (en) * | 2015-08-16 | 2017-03-01 | 天津市新海塑料包装有限公司 | A kind of novel injection molding machine equipment |
| CN107310105A (en) * | 2017-08-19 | 2017-11-03 | 成都市联余精密机械有限公司 | A kind of delayed ejection mould structure for realizing milk powder cover mold inner poster |
| CN207224524U (en) * | 2017-09-21 | 2018-04-13 | 深圳市欧丽塑胶原材料有限公司 | A kind of horizontal injection press |
| CN109501151A (en) * | 2018-12-29 | 2019-03-22 | 青岛海泰科模具有限公司 | Car thin-wall door-plate injection mold |
| CN210283107U (en) * | 2019-07-18 | 2020-04-10 | 青岛海泰科模具有限公司 | Injection molding die for automotive hatchback door interior trim panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110406048A (en) | 2019-11-05 |
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