CN210283107U - Injection molding die for automotive hatchback door interior trim panel - Google Patents
Injection molding die for automotive hatchback door interior trim panel Download PDFInfo
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- CN210283107U CN210283107U CN201921133188.1U CN201921133188U CN210283107U CN 210283107 U CN210283107 U CN 210283107U CN 201921133188 U CN201921133188 U CN 201921133188U CN 210283107 U CN210283107 U CN 210283107U
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Abstract
The utility model discloses a pressure injection mould that is used for car to lift back of body door interior plaque, including front mould, back mould, movable block actuating mechanism and air discharge duct, be equipped with back mould die cavity in the back mould, back mould die cavity and back mould structure as an organic whole. The front mold core is arranged in the front mold and 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 embedded mode, and the rear mold cavity is positioned on the inner side of the movable block. The movable block driving mechanism is arranged in the back mold, 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 back mold. The utility model discloses a movable block that sets up increases the thickness of the die cavity of moulding plastics, reduces the thickness of the die cavity of moulding plastics after the injecting glue is accomplished, and the filling resistance during the injecting glue is little, and the hot glue of being convenient for fills the type fast, eliminates the gas trace of product outward appearance face, has reduced the rejection rate, improves the product quality.
Description
Technical Field
The utility model relates to an injection mold technical field, concretely relates to a pressure injection mold that is used for car to lift back of body door interior plaque.
Background
The automobile hatchback door interior trimming panel is a thin-wall injection molding part, the whole area is large, the wall thickness is about 1.8mm, when a common injection mold is used for production, the injection molding resistance is large, the thin position of the wall is firstly cooled, the mold filling capacity is poor, the defect that the material cannot be completely filled due to the fact that the material flows is generated in the local part of the product part, meanwhile, gas marks can be generated on the appearance surface of the product, the quality requirement cannot be met, the product is scrapped, and the yield is low. If through improving injecting glue pressure, then can lead to the condition that the overlap appears in the product spare to appear, also can't satisfy the requirement to the product spare. Therefore, for injection molding of an interior panel of a thin-walled automotive hatchback door, it is necessary to develop a mold capable of reducing filling resistance, improving mold filling capability, and eliminating air marks on an appearance surface.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that the prior art is not enough, the filling resistance is large, the filling capability is poor, the appearance surface is poor, and the rejection rate is high.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a pressure injection mould for plaque in car hatchback door, including front mould, back mould, movable block actuating mechanism and air discharge duct, be equipped with back mould die cavity in the back mould, back mould die cavity and back mould structure as an organic whole. The front mold core is arranged in the front mold and 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 embedded mode, and the rear mold cavity is positioned on the inner side of the movable block. The movable block driving mechanism is arranged in the back mold, 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 back mold.
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 seat is arranged above the front die and fixedly connected with the front die.
Preferably, the upper surface of the movable block is provided with a plurality of guide posts, guide post slots which are equal in number and correspond to the guide posts in position are arranged on the parting surface of the front die, and the guide post slots are located on the outer side of the front die 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 by the needle plate to move relative to the rear die.
Preferably, a plurality of core print seats are sequentially arranged on the inner wall of one side of the movable block at intervals, and the core print seats are movably arranged in the rear model cavity in an embedded mode. The core seat and the movable block are fixed into an integral structure, and a core forming a strip mounting hole at the edge of an inner decorative plate of the automobile hatchback door is arranged at the top of the core seat.
Preferably, the upper surface of movable block is equipped with the exhaust duct of accessible gas only, the movable block contacts the die joint of front mould back, forms the logical groove of air current at the cooperation of the die joint of exhaust duct inner wall and front mould.
Preferably, the depth of the exhaust groove is 0.02 mm.
Preferably, the inner side wall of the movable block is matched with the edge of the injection molding cavity and is abutted 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 utility model discloses a beneficial technological effect is: the utility model discloses a movable block that sets up increases the thickness of the die cavity of moulding plastics, reduces the thickness of the die cavity of moulding plastics after the injecting glue is accomplished, and the filling resistance during the injecting glue is little, and the hot glue of being convenient for fills the type fast, eliminates the gas trace of product outward appearance face, has reduced the rejection rate, improves the product quality.
Drawings
Fig. 1 is a schematic structural diagram of a die and a front die holder in the technical solution of the present invention.
Fig. 2 is a schematic structural diagram of the rear mold and the rear mold base in the technical solution of the present invention.
Fig. 3 is a schematic view of the combined structure of the movable block and the movable block driving mechanism of the present invention.
Fig. 4 is a plan view of a combination structure of the movable block and the movable block driving mechanism in fig. 3.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
with reference to fig. 1 to 4, the injection mold for the automotive 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 duct, 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 the appearance surface of the automotive hatchback door trim panel product. 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 mold 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 die 1 is fixed on the injection molding machine through the front die holder 12, the rear die 2 is fixed on the injection molding machine through the front die holder 12, and the injection molding machine controls the opening or closing of the front die 1 and the rear die 2.
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 die 2 in an embedded mode, and the rear die 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 is close to 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. The number of the straight ejector rods 42 is four, the 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 provided, four oil cylinders 43 are fixed on the rear mold 2 in a square shape, and the four oil cylinders 43 synchronously extend and retract to drive the needle plate 41 to translate relative to the rear mold 2.
The upper surface of the movable block 3 is provided with four guide posts 31, the guide posts 31 are protruding posts of a wedge-shaped structure, four guide post slots 51 are arranged on the parting surface 5 of the front mold 1, the guide post slots 51 are wedge-shaped 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 located on the outer side of the front mold core 11.
Six core print seats 6 are sequentially arranged on the inner wall of one side of the movable block 3 at intervals, and the core print seats 6 are movably arranged in the rear model cavity 21 in an embedded mode. One side of the core print 6 is fixedly connected with the movable block 3 to form an integral structure, and the top of the core print 6 is provided with a core 61 forming a strip mounting hole at the edge of the inner decoration plate of the automobile hatchback door. The upper surface of the movable block 3 is provided with an exhaust groove only allowing gas to pass through, and the depth of the exhaust groove is 0.02 mm. After the movable block 3 is contacted with the parting surface of the front mold 1, the air flow through groove is formed by matching the inner wall of the air exhaust groove with the parting surface of the front mold 1. In the use state, the gas in the injection molding cavity can be exhausted to the outside of the mold through the exhaust grooves, and the hot glue in the injection molding cavity cannot pass through the exhaust grooves.
The working principle of the utility model is as follows: before the front mold 1 and the rear mold 2 are closed, the movable block 3 is in a convex state. The rear die 2 and the movable block 3 are kept static, the front die 1 moves towards the rear die 2 under the action of the injection molding machine and is firstly contacted with the surface of the movable block 3, the front die 1, the rear die 2 and the movable block 3 form a closed glue injection cavity, and the thickness of the glue injection cavity between the front die core 11 and the rear die cavity 21 is 2.8 mm. The hot glue is injected into the glue injection cavity through the pouring gate positioned in the middle of the rear mold 2, the glue injection amount is the glue consumption amount for forming an automobile back door trim panel product, the volume of the glue injection cavity is larger than the volume of the hot glue inside the glue injection cavity, and in the glue injection process, partial gas in the glue injection cavity is exhausted to the outside of the mold through the exhaust groove.
After the injecting glue is accomplished, front mould 1 begins to move to back mould 2 again, and at this moment, hydro-cylinder 43 passes through faller 41 and straight ejector pin 42 drive movable block 3 and moves to back mould 2 one side, and the motion of front mould 1 and the motion of movable block 3 are synchronous, and the surface of movable block 3 compresses tightly on the die joint of front mould 1 all the time, avoids hot glue to be pushed out from the surface of movable block 3, and in front mould 1 and the synchronous motion process of movable block 3, the injecting glue cavity diminishes gradually, and its inside gas is followed in succession the exhaust duct is arranged to the outside of mould. 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 glue injection cavity becomes the injection mold cavity, the hot glue is filled in the whole glue injection cavity, and the gas in the glue injection cavity is exhausted. After cooling, the front mold 1 and the rear mold 2 are opened, the manipulator takes away the automotive hatchback door trim panel product, and the movable block 3 is in a state before mold closing under the action of the movable block driving mechanism 4 to wait for next mold closing and glue injection.
The parts not mentioned in the utility model can be realized by adopting or using the prior art for reference.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (7)
1. The pressure injection mold for the automotive hatchback door trim panel comprises a front mold, a rear mold, a movable block driving mechanism and an exhaust duct, 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 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 embedded mode, and the rear mold cavity is positioned on the inner side of the movable block; the movable block driving mechanism is arranged in the back mold, 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 back mold.
2. The injection mold for an interior trim panel of a hatchback door of a vehicle of claim 1, wherein a rear mold base is disposed below the rear mold, and the rear mold base is fixedly connected to the rear mold; a front die seat is arranged above the front die and fixedly connected with the front die.
3. The injection mold for an interior trim panel of a hatchback door of an automobile according to claim 1, wherein a plurality of guide posts are disposed on an upper surface of the movable block, guide post slots corresponding to the guide posts are disposed on a parting surface of the front mold, and the guide post slots are disposed outside a core of the front mold.
4. The injection mold for an interior trim panel of an automotive hatchback door according to claim 1, wherein the movable block driving mechanism comprises a needle plate, a straight ejector rod and an oil cylinder, the needle plate is movably arranged below the rear mold, 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 by the needle plate to move relative to the rear die.
5. The injection mold for an interior trim panel of a hatchback door of an automobile according to claim 1, wherein a plurality of core seats are sequentially arranged on an inner wall of one side of the movable block at intervals, and the core seats are movably arranged in the rear mold cavity in an embedded manner; the core seat and the movable block are fixed into an integral structure, and a core forming a strip mounting hole at the edge of an inner decorative plate of the automobile hatchback door is arranged at the top of the core seat.
6. The injection mold for an interior trim panel of a hatchback door of a vehicle according to claim 1, wherein the movable block has an exhaust channel on an upper surface thereof through which only air can pass, and an air flow channel is formed by an inner wall of the exhaust channel and a parting surface of the front mold after the movable block contacts the parting surface of the front mold.
7. The injection mold of claim 6, wherein the vent channel has a depth of 0.02 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921133188.1U CN210283107U (en) | 2019-07-18 | 2019-07-18 | Injection molding die for automotive hatchback door interior trim panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921133188.1U CN210283107U (en) | 2019-07-18 | 2019-07-18 | Injection molding die for automotive hatchback door interior trim panel |
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| Publication Number | Publication Date |
|---|---|
| CN210283107U true CN210283107U (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921133188.1U Active CN210283107U (en) | 2019-07-18 | 2019-07-18 | Injection molding die for automotive hatchback door interior trim panel |
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| Country | Link |
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| CN (1) | CN210283107U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110406048A (en) * | 2019-07-18 | 2019-11-05 | 青岛海泰科模具有限公司 | The compression moulding die of tailgate trim panel is lifted for automobile |
-
2019
- 2019-07-18 CN CN201921133188.1U patent/CN210283107U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110406048A (en) * | 2019-07-18 | 2019-11-05 | 青岛海泰科模具有限公司 | The compression moulding die of tailgate trim panel is lifted for automobile |
| CN110406048B (en) * | 2019-07-18 | 2024-03-19 | 青岛海泰科模具有限公司 | Compression molding tool for automobile hatchback door inner decoration plate |
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