Injection molding structure for forming double-color automobile wheel eyebrow

Abstract

The utility model relates to an injection molding structure for forming a double-color automobile wheel trim, which comprises a male template, an oil cylinder and a driving slide block, a first pouring gate is arranged on the upper end face of the male template, the oil cylinder is arranged on the right side of the male template, a main shaft of the oil cylinder faces leftwards, the driving slide block inserted into the male template is arranged on the main shaft of the oil cylinder, and the driving slide block is arranged on the right side of the male template. The upper side of the right end of the driving sliding block is of an inclined face structure with the left end inclining downwards, a switch blade sliding block moving up and down is installed on the inclined face structure, a forming part is formed between the upper end of the switch blade sliding block and the first pouring gate, and a pouring gate insert embedded into a male mold plate is installed on the upper side of the driving sliding block. A horn gate insert is embedded in the upper end surface of the gate insert close to the first gate, and a second gate corresponding to the forming part is arranged on the horn gate insert. The double-color injection mold has the characteristics of reducing the cost of double-color injection molding, improving the production efficiency of products, ensuring the quality of the products, conveniently stripping the products and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of two-color injection molding, in particular to an injection molding structure used for two-color automobile wheel arch molding. Background Art

[0002] like Figure 5 and Figure 6 As shown, the conventional two-shot injection molding process requires two molds for molding during production. The mother molds of the first and second molds are the same. The male mold of the first mold only has the glue position of the first shot product. The male mold of the second mold has more glue positions for the second shot than the male mold of the first mold. After the first mold completes the first shot, it is rotated by the injection molding machine, and the mother mold after the first shot is combined with the male mold of the second shot to perform the second shot molding. This production process will greatly increase the production cost. In order to reduce the production cost of two-shot injection molding, the mold needs to be modified. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide an injection molding structure for two-color automobile wheel eyebrow molding, which has the characteristics of reducing the cost of two-color injection molding, improving product production efficiency, ensuring product quality, and facilitating product removal.

[0004] The technical solution adopted by the utility model to solve its technical problems is: to provide an injection molding structure for two-color automobile wheel eyebrow molding, including a male mold plate, a cylinder and a driving slider, a first gate is arranged on the upper end surface of the male mold plate, a cylinder is installed on the right side of the male mold plate, the main shaft of the cylinder is facing left, and a driving slider inserted into the male mold plate is installed on the main shaft of the cylinder, the upper side of the right end of the driving slider adopts an inclined surface structure with the left end inclined downward, a gate slider that moves up and down is installed on the inclined surface structure, a molding part is formed between the upper end of the gate slider and the first gate, a gate insert embedded in the male mold plate is installed on the upper side of the driving slider, a bull horn gate insert is embedded and installed on the upper end surface of the gate insert near the first gate, and a second gate corresponding to the molding part is provided on the bull horn gate insert.

[0005] In this technical solution, an oil cylinder is provided to facilitate the oil cylinder to push the driving slider, the driving slider is used to control the gate slider to move up and down, a gate insert is provided to facilitate the installation of the bull horn gate insert, the bull horn gate insert is used to set the second gate, and the gate slider is used to block the molding part. When the molding part moves downward, the second gate can be opened, thereby realizing two-color injection molding. The structure can be installed as a whole on a mold. During production, it is only necessary to switch the position of the gate slider to complete the two-color injection molding. This method can greatly reduce production costs and also improve the efficiency of two-color injection molding.

[0006] As a supplement to the present technical solution, the bull horn gate insert includes an insert body and an extension portion. The insert body is provided with an extension portion extending outward on one side close to the first gate, and the lower side of the extension portion is provided with a curved surface structure that bends upward near the end.

[0007] In this technical solution, the insert body is provided to facilitate quick docking with the gate insert, and it is also convenient to replace the insert body. The extension part is provided to facilitate docking with the first gate.

[0008] As a supplement to the present technical solution, the second gate includes an injection runner, a bullhorn runner and a connecting hole. The injection runner is arranged on the inlet body, the bullhorn runner is arranged in the middle of the lower end surface of the extension part, and a connecting hole is arranged between the injection runner and the bullhorn runner.

[0009] In this technical solution, an injection runner is provided to facilitate docking with the gate runner of two-color injection molding, a bull horn runner is provided to facilitate the injection of colloid materials, and a connecting hole is provided to facilitate docking between the injection runner and the bull horn runner.

[0010] As a supplement to the present technical solution, the upper side of the knife gate slider adopts a step structure, and the side surface of the step structure is curved. The step structure is provided to facilitate the limiting of the knife gate slider.

[0011] As a supplement to the present technical solution, two rectangular grooves are arranged side by side at the position where the first gate is arranged on the male template, and the formation of the reinforcing ribs is facilitated by the arrangement of the rectangular grooves.

[0012] As a supplement to the present technical solution, the male template is provided with a limiting rib that is engaged with the oil cylinder, and a stopper that presses against the oil cylinder is provided on the left side of the oil cylinder.

[0013] A design method for an injection molding structure for forming a two-color automobile wheel arch includes the following specific steps: Step 1: Performing CAE analysis on the product to be produced, and determining the position, quantity, length, and gate diameter of a first gate and a second gate based on the analysis report; Step 2: Determining the runner structure on the mold hot runner plate based on the positions of the first and second gates; Step 3: Designing a gate insert based on the length and gate diameter of the second gate; Step 4: Determining the size and shape of a gate slider based on the shape of the gate insert.

[0014] As a supplement to the present technical solution, the second gate is in a bull horn structure, the gate flow length of the second gate does not exceed 100 mm, and the gate diameter is between 0.8 and 1 mm.

[0015] As a supplement to the present technical solution, a step structure is designed on the gate knife slider, and a molding part is provided at the upper end of the gate knife slider. The shape and thickness of the molding part match the second gate. The length of the molding part does not exceed 3.5 times the thickness of the molding part, and the thickness of the step part is 10 to 20 mm.

[0016] Beneficial effects: The utility model relates to an injection molding structure for two-color automobile wheel arch molding, in which an oil cylinder is provided to facilitate the oil cylinder to push a driving slider, the driving slider is used to control the gate slider to move up and down, a gate insert is provided to facilitate the installation of a bull horn gate insert, the bull horn gate insert is used to set a second gate, and the gate slider is used to seal the molding part. When the molding part moves downward, the second gate can be opened, thereby realizing two-color injection molding. The structure can be installed as a whole on a mold. During production, it is only necessary to switch the position of the gate slider to complete the two-color injection molding. This method can greatly reduce production costs and improve the efficiency of two-color injection molding. It has the characteristics of reducing the cost of two-color injection molding, improving product production efficiency, ensuring product quality, and facilitating product removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural view of the utility model;

[0018] Figure 2 This is a top view of the ox-horn gate insert of the utility model;

[0019] Figure 3 This is a bottom view of the ox-horn gate insert of the utility model;

[0020] Figure 4 This is a structural view of the utility model with a first gate and a second gate;

[0021] Figure 5 This is a schematic diagram of the mold design before the improvement of the utility model;

[0022] Figure 6 This utility model Figure 5 A partial enlarged view of the middle part;

[0023] Figure 7 It is a top view of the structure of the utility model;

[0024] Figure 8 This utility model Figure 7 Cross-sectional view in the AA direction;

[0025] Figure 9 It is a schematic diagram of the utility model product;

[0026] Figure 10 It is a BB direction sectional view of the present utility model.

[0027] Illustration: 1. Male template, 2. Cylinder, 3. Driving slider, 4. Gate slider, 5. Molding part, 6. Rectangular groove, 7. First gate, 8. Second gate, 9. Bull horn gate insert, 10. Limiting rib, 11. Stopper, 12. Insert body, 13. Extension part, 14. Connecting hole, 15. Bull horn runner, 16. Injection runner, 17. Gate insert, 18. Primary injection body, 19. Secondary injection body. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art may make various changes or modifications to the present invention, and that such equivalents also fall within the scope of the claims appended hereto.

[0029] The embodiment of the utility model relates to an injection molding structure for forming a two-color automobile wheel eyebrow, such as Figure 1 —4, comprising a male template 1, a cylinder 2 and a driving slider 3, a first gate 7 being provided on the upper end face of the male template 1, a cylinder 2 being installed on the right side of the male template 1, the main shaft of the cylinder 2 being leftward, a driving slider 3 inserted into the male template 1 being installed on the main shaft of the cylinder 2, the upper right end of the driving slider 3 adopts an inclined surface structure with the left end tilted downward, a gate slider 4 moving up and down is installed on the inclined surface structure, a molding part 5 is formed between the upper end of the gate slider 4 and the first gate 7, a gate insert 17 embedded in the male template 1 is installed on the upper side of the driving slider 3, a bull horn gate insert 9 is embedded and installed on the upper end face of the gate insert 17 near the first gate 7, and a second gate 8 corresponding to the molding part 5 is provided on the bull horn gate insert 9.

[0030] In this technical solution, an oil cylinder 2 is provided to facilitate the oil cylinder to push the driving slider 3, and the driving slider 3 is used to control the gate slider 4 to move up and down. A gate insert 17 is provided to facilitate the installation of the bull horn gate insert 9, and the bull horn gate insert 9 is used to set the second gate 8. The gate slider 4 is used to block the molding part 5. When the molding part 5 moves downward, the second gate 8 can be opened, thereby realizing two-color injection molding. The structure can be installed as a whole on a mold. During production, it is only necessary to switch the position of the gate slider 4 to complete the two-color injection molding. This method can greatly reduce production costs and also improve the efficiency of two-color injection molding.

[0031] As a supplement to the present technical solution, the bull horn gate insert 9 includes an insert body 12 and an extension portion 13. The insert body 12 is provided with an outward extension portion 13 on the side close to the first gate 7, and the lower side of the extension portion 13 is provided with a curved surface structure that bends upward near the end.

[0032] In this technical solution, the insert body 12 is provided to facilitate quick docking with the gate insert 17, and it is also convenient to replace the insert body 12. The extension part 13 is provided to facilitate docking with the first gate 7.

[0033] As a supplement to the present technical solution, the second gate 8 includes an injection runner 16, a bull horn runner 15 and a connecting hole 14. The injection runner 16 is arranged on the inlet body 12, and the bull horn runner 15 is arranged in the middle of the lower end face of the extension 13. A connecting hole 14 is arranged between the injection runner 16 and the bull horn runner 15.

[0034] In this technical solution, an injection runner 16 is provided to facilitate docking with the gate runner of two-color injection molding, a bullhorn runner 15 is provided to facilitate injection of colloid material, and a connecting hole 14 is provided to facilitate docking between the injection runner 16 and the bullhorn runner 15.

[0035] As a supplement to the present technical solution, the upper side of the knife block 4 adopts a step structure, and the side surface of the step structure is curved. The step structure is provided to facilitate the limiting of the knife block 4.

[0036] As a supplement to the present technical solution, two rectangular grooves 6 are arranged side by side at the position where the first gate 7 is arranged on the male template 1, and the rectangular grooves 6 are arranged to facilitate the forming of the reinforcing ribs.

[0037] As a supplement to the present technical solution, the male template 1 is provided with a limiting rib 10 that is engaged with the oil cylinder 2 , and a stopper 11 that presses against the oil cylinder 2 is provided on the left side of the oil cylinder 2 .

[0038] A design method for an injection molding structure for forming a two-color automobile wheel arch includes the following specific steps: Step 1: Performing a CAE analysis on the product to be produced, and determining the position, quantity, length, and gate diameter of a first gate 7 and a second gate 8 based on the analysis report; Step 2: Determining the runner structure on the mold hot runner plate based on the positions of the first gate 7 and the second gate 8; Step 3: Designing a gate insert 17 based on the length and gate diameter of the second gate 8; Step 4: Determining the size and shape of a gate slider 4 based on the shape of the gate insert 17.

[0039] As a supplement to the present technical solution, the second gate 8 is in a bull horn structure, the gate flow length of the second gate 8 does not exceed 100 mm, and the gate diameter is between 0.8 and 1 mm.

[0040] As a supplement to the present technical solution, a step structure is designed on the gate knife slider 4, and a molding part 5 is provided at the upper end of the gate knife slider 4. The shape and thickness of the molding part 5 match the second gate 8. The length of the molding part 5 does not exceed 3.5 times the thickness of the molding part 5, and the thickness of the step part is 10 to 20 mm.

[0041] like Figure 5 and Figure 6 As shown, the original production situation requires two mold structures, the first mold is used to form the primary injection body 18, and the second mold is used to form the secondary injection body 19.

[0042] Example

[0043] like Figure 7 and Figure 8 As shown, when the device is in production, the mold is first closed, and then the first injection molding is carried out. The equipment injects plastic material, and the material is molded in the first gate 7, so that the product body can be formed. After completion, the oil cylinder 2 is started, and the main shaft of the oil cylinder 2 is contracted, so that the oil cylinder 2 can drive the driving slider 3 to move, and the driving slider 3 makes the gate slider 4 move down to expose the molding part 5. Then the second injection structure is started, so that the colloidal material enters the injection flow channel 16 through the second runner structure, and the colloidal material in the injection flow channel 16 flows into the horn flow channel 15 through the connecting hole 14, and enters the molding part 5 through the horn flow channel 15. The molding part 5 can fit the product body to complete the secondary molding. The product produced is as follows Figure 9 and Figure 10 shown.

[0044] The above is a detailed introduction to the injection molding structure for forming a two-color automobile wheel arch provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the ideas of the present application, there may be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. An injection molding structure for forming a two-color automobile wheel eyebrow, characterized by: The invention comprises a male mold plate (1), an oil cylinder (2) and a driving slider (3), wherein a first gate (7) is provided on the upper end surface of the male mold plate (1), an oil cylinder (2) is installed on the right side of the male mold plate (1), the main shaft of the oil cylinder (2) faces left, and a driving slider (3) inserted into the male mold plate (1) is installed on the main shaft of the oil cylinder (2), the upper side of the right end of the driving slider (3) adopts an inclined surface structure with the left end tilted downward, a gate slider (4) that moves up and down is installed on the inclined surface structure, a molding part (5) is formed between the upper end of the gate slider (4) and the first gate (7), a gate insert (17) embedded in the male mold plate (1) is installed on the upper side of the driving slider (3), a bull horn gate insert (9) is embedded and installed on the upper end surface of the gate insert (17) near the first gate (7), and a second gate (8) corresponding to the molding part (5) is provided on the bull horn gate insert (9).

2. The injection molding structure for forming a two-color automobile wheel arch according to claim 1, characterized in that: The bull horn gate insert (9) includes an insert body (12) and an extension portion (13), and the insert body (12) is provided with an outwardly extending extension portion (13) on the side close to the first gate (7), and the lower side of the extension portion (13) is provided with a curved surface structure that is bent upward near the end.

3. The injection molding structure for forming a two-color automobile wheel arch according to claim 2, characterized in that: The second gate (8) includes an injection channel (16), a bullhorn channel (15) and a connecting hole (14); the injection channel (16) is arranged on the inlet body (12); the bullhorn channel (15) is arranged in the middle of the lower end surface of the extension portion (13); and a connecting hole (14) is arranged between the injection channel (16) and the bullhorn channel (15).

4. The injection molding structure for forming a two-color automobile wheel arch according to claim 1, characterized in that: The upper side of the knife gate slider (4) adopts a step structure, and the side surface of the step structure is in a curved shape.

5. The injection molding structure for forming a two-color automobile wheel arch according to claim 1, characterized in that: Two rectangular grooves (6) are arranged side by side at the position where the first gate (7) is arranged on the male mold plate (1).

6. The injection molding structure for forming a two-color automobile wheel arch according to claim 1, characterized in that: The male template (1) is provided with a limiting rib (10) that is engaged with the oil cylinder (2), and a stopper (11) that abuts against the oil cylinder (2) is provided on the left side of the oil cylinder (2).

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