Injection molding mechanism for double-color rubber-coated folding laundry basket

Abstract

The utility model belongs to the technical field of molds, and particularly relates to an injection molding mechanism for a double-color rubber-coated folding laundry basket. The folding type laundry basket forming die comprises a folding type laundry basket forming lower die and a folding type laundry basket forming upper die. In the injection molding process, the folding type laundry basket forming lower mold and the folding type laundry basket forming upper mold are close to each other, so that the laundry basket forming bulge is attached to the laundry basket forming concave cavity, the double-color forming lower part and the double-color forming upper part form a double-color forming cavity of a plastic part, and a molten material is injected into the cavity through the injection molding part; the middle of the plastic part is in one color, the two sides of the plastic part are in one color, double-color rubber coating injection molding of the folding type laundry basket is completed, after injection molding is completed, mold opening is conducted, large-area ejection is conducted on the left side and the right side of the molded plastic part through the large-area corner ejection demolding assembly, an arc-shaped contact surface ejection structure is adopted, and the ejection symmetry and the sufficient contact surface can be ensured; and a better ejection demolding form is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an injection molding mechanism for a two-color overmolded folding laundry basket. Background Art

[0002] The folding laundry basket is used to place clothes to be washed, and the material is generally soft-pack plastic. Currently, the two-color overmolded folding laundry basket product is relatively popular on the market. When the existing two-color overmolded folding laundry basket injection mold is injection molded, due to the relatively deep depth of the plastic part, it is difficult to ensure the symmetry and sufficient contact surface during the ejection process if point ejection is used, and the ejection effect is poor. Therefore, there is an urgent need to design an injection molding mechanism for a two-color overmolded folding laundry basket that can overcome the above defects.

[0003] In order to overcome the deficiencies of the prior art, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses an injection mold for a plastic basket [Application No.: 202320721544.1], which includes an upper mold for forming a plastic basket and a lower mold for forming a plastic basket. A surrounding plastic basket forming assembly is provided between the upper mold for forming a plastic basket and the lower mold for forming a plastic basket. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an injection molding mechanism for a two-color overmolded folding laundry basket in view of the above problems.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An injection molding mechanism for a two-color overmolded folding laundry basket includes a lower mold for forming a folding laundry basket and an upper mold for forming a folding laundry basket. A laundry basket forming protrusion is provided in the lower mold for forming a folding laundry basket. A lower two-color forming part is provided on the laundry basket forming protrusion. A laundry basket forming cavity is provided in the upper mold for forming a folding laundry basket. An upper two-color forming part is provided in the laundry basket forming cavity. The position of the lower two-color forming part corresponds to that of the upper two-color forming part and the shapes are matched. An injection part is provided above the upper mold for forming a folding laundry basket. A large-area corner ejection and demolding assembly capable of reciprocating linearly in the vertical direction is provided in the lower mold for forming a folding laundry basket. The large-area corner ejection and demolding assembly corresponds to the position of the lower two-color forming part.

[0007] In the above injection molding mechanism for a two-color overmolded folding laundry basket, the lower two-color forming part includes a middle-lower single-color forming area and two side-lower single-color forming areas. The middle-lower single-color forming area and the side-lower single-color forming areas are connected. The large-area corner ejection and demolding assembly corresponds to the position of the side-lower single-color forming area.

[0008] In the above-mentioned injection molding mechanism for a two-color overmolded foldable laundry basket, the upper part of the two-color molding includes a middle-upper single-color molding area and two side-upper single-color molding areas. The middle-upper single-color molding area is arranged opposite to the middle-lower single-color molding area, and the side-upper single-color molding area is arranged opposite to the side-lower single-color molding area.

[0009] In the above-mentioned injection molding mechanism for a two-color overmolded foldable laundry basket, the injection molded part includes an injection main board arranged above the upper mold for forming the foldable laundry basket. An injection main hole is provided in the injection main board, and the injection main hole is connected to the middle-upper single-color molding area.

[0010] In the above-mentioned injection molding mechanism for a two-color overmolded foldable laundry basket, the large-area corner ejection and demolding assembly includes two left ejection blocks and two right ejection blocks arranged in the lower mold for forming the foldable laundry basket. The left ejection blocks and the right ejection blocks are arranged alternately.

[0011] In the above-mentioned injection molding mechanism for a two-color overmolded foldable laundry basket, the inner side of the left ejection block is formed into an arc shape, and the inner side of the right ejection block is in an arc shape.

[0012] In the above-mentioned injection molding mechanism for a two-color overmolded foldable laundry basket, a left ejection straight rod is provided at the bottom of the left ejection block, and a right ejection straight rod is provided at the bottom of the right ejection block.

[0013] In the above-mentioned injection molding mechanism for a two-color overmolded foldable laundry basket, two left embedding grooves and two right embedding grooves are provided in the lower mold for forming the foldable laundry basket. The left ejection block is matched with the left embedding groove in shape, and the right ejection block is matched with the right embedding groove in shape.

[0014] In the above-mentioned injection molding mechanism for a two-color overmolded foldable laundry basket, an ejection connecting plate is provided below the lower mold for forming the foldable laundry basket. The left ejection straight rod and the right ejection straight rod are respectively connected to the ejection connecting plate.

[0015] In the above-mentioned injection molding mechanism for a two-color overmolded foldable laundry basket, a bottom plate is provided below the ejection connecting plate. Two anti-deviation shims are provided on the bottom plate, and the ejection connecting plate is in sliding fit with the anti-deviation shims.

[0016] Compared with the existing technology, the advantages of the present utility model are as follows:

[0017] 1. During the injection molding process of the present utility model, the folding laundry basket forming lower mold and the folding laundry basket forming upper mold are brought closer to each other, so that the laundry basket forming protrusions are fitted with the laundry basket forming cavities, and the lower part of the two-color molding and the upper part of the two-color molding form a two-color molding cavity for the plastic part. The molten material is injected into the cavity through the injection part. One color is in the middle of the plastic part and another color is on both sides, completing the two-color overmolding injection molding of the folding laundry basket. After the injection molding is completed, the mold is opened, and the large-area corner ejection demolding assembly is used to eject the molded plastic part on both the left and right sides in a large area. The arc-shaped contact surface ejection structure can ensure the symmetry of ejection and sufficient contact surface, achieving a better ejection and demolding form.

[0018] 2. When the present utility model is injection molded, the left embedding groove is used to place the left ejection block, and the right embedding groove is used to place the right ejection block, so as to avoid affecting the molding of the plastic part during injection molding.

[0019] Other advantages, objectives and features of the present utility model will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the structural schematic diagram of the present utility model.

[0021] Figure 2 is the partial structural schematic diagram of the present utility model.

[0022] Figure 3 is the partial structural schematic diagram of the present utility model in another direction.

[0023] Figure 4 is the structural schematic diagram of the large-area corner ejection demolding assembly.

[0024] Figure 5 is the structural schematic diagram of the folding laundry basket forming upper mold.

[0025] In the figure: folding laundry basket forming lower mold 1, folding laundry basket forming upper mold 2, laundry basket forming protrusion 3, lower part of two-color molding 4, laundry basket forming cavity 5, upper part of two-color molding 55, injection part 6, large-area corner ejection demolding assembly 7, middle and lower part single-color molding area 8, side and lower part single-color molding area 9, middle and upper part single-color molding area 10, side and upper part single-color molding area 11, injection main board 12, injection main hole 13, left ejection block 14, right ejection block 15, left ejection straight rod 16, right ejection straight rod 17, left embedding groove 18, right embedding groove 19, ejection connection plate 20, bottom plate 21, anti-offset iron 22. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present utility model will be further described below with reference to the accompanying drawings.

[0027] As Figures 1-5 shown, a two-color overmolding folding laundry basket injection molding mechanism includes a folding laundry basket forming lower mold 1 and a folding laundry basket forming upper mold 2. A laundry basket forming protrusion 3 is provided in the folding laundry basket forming lower mold 1. A two-color forming lower part 4 is provided on the laundry basket forming protrusion 3. A laundry basket forming cavity 5 is provided in the folding laundry basket forming upper mold 2. A two-color forming upper part 55 is provided in the laundry basket forming cavity 5. The position of the two-color forming lower part 4 corresponds to and the shape matches that of the two-color forming upper part 55. An injection molding part 6 is provided above the folding laundry basket forming upper mold 2. A large-area corner ejecting and demolding assembly 7 capable of reciprocating linearly in the vertical direction is provided in the folding laundry basket forming lower mold 1. The large-area corner ejecting and demolding assembly 7 corresponds to the position of the two-color forming lower part 4.

[0028] In this embodiment, during the injection molding process, the folding laundry basket forming lower mold 1 and the folding laundry basket forming upper mold 2 are brought closer to each other, so that the laundry basket forming protrusion 3 is in contact with the laundry basket forming cavity 5. The two-color forming lower part 4 and the two-color forming upper part 55 form a two-color forming cavity for the plastic part. The molten material is injected into the cavity through the injection molding part 6. One color is formed in the middle of the plastic part, and one color is formed on both sides, completing the two-color overmolding injection molding of the folding laundry basket. After the injection molding is completed, the mold is opened, and the large-area corner ejecting and demolding assembly 7 is used to eject the molded plastic part on both the left and right sides in a large area. The arc-shaped contact surface ejecting structure can ensure the symmetry of the ejection and sufficient contact surface, achieving a better ejection and demolding form.

[0029] Combined with Figures 1-5 shown, the two-color forming lower part 4 includes a middle and lower single-color forming area 8 and two side and lower single-color forming areas 9. The middle and lower single-color forming area 8 and the side and lower single-color forming areas 9 are connected. The large-area corner ejecting and demolding assembly 7 corresponds to the position of the side and lower single-color forming areas 9. The two-color forming upper part 55 includes a middle and upper single-color forming area 10 and two side and upper single-color forming areas 11. The middle and upper single-color forming area 10 is arranged opposite to the middle and lower single-color forming area 8. The side and upper single-color forming areas 11 are arranged opposite to the side and lower single-color forming areas 9.

[0030] In this embodiment, during the injection molding process, the middle and lower single-color forming area 8 is opposite to the middle and upper single-color forming area 10, and the side and lower single-color forming areas 9 are opposite to each other. One color is formed in the middle, and one color is formed on both sides, completing the two-color overmolding injection molding of the folding laundry basket.

[0031] Combined with Figures 1-5As shown, the injection molded part 6 includes an injection main board 12 disposed above the folding laundry basket forming upper mold 2. An injection main hole 13 is provided in the injection main board 12, and the injection main hole 13 is connected to the middle-upper single-color forming area 10.

[0032] In this embodiment, during the injection molding process, the molten material passes through the injection main hole 13 in the injection main board 12 for two-color injection molding.

[0033] The large-area corner ejection and demolding assembly 7 includes two left ejection blocks 14 and two right ejection blocks 15 disposed in the folding laundry basket forming lower mold 1. The left ejection blocks 14 and the right ejection blocks 15 are arranged alternately. The inner side of the left ejection block 14 is formed into an arc, the inner side of the right ejection block 15 is in an arc shape, a left ejection straight rod 16 is provided at the bottom of the left ejection block 14, and a right ejection straight rod 17 is provided at the bottom of the right ejection block 15.

[0034] In this embodiment, after the injection molding is completed and the mold is opened, the left ejection straight rod 16 and the right ejection block 15 are moved upward. The formed plastic part is ejected from the left and right sides in a large area by the left ejection block 14 and the right ejection block 15. The inner side of the left ejection block 14 is formed into an arc, and the inner side of the right ejection block 15 is in an arc shape. The arc-shaped contact surface ejection structure is adopted to ensure the symmetry of ejection and sufficient contact surface, achieving a better ejection and demolding form.

[0035] Combined with Figures 2-3 As shown, two left embedded grooves 18 and two right embedded grooves 19 are provided in the folding laundry basket forming lower mold 1. The left ejection block 14 is adapted to the shape of the left embedded groove 18, and the right ejection block 15 is adapted to the shape of the right embedded groove 19.

[0036] In this embodiment, during injection molding, the left embedded groove 18 is used to place the left ejection block 14, and the right embedded groove 19 is used to place the right ejection block 15 to avoid affecting the molding of the plastic part during injection molding.

[0037] Combined with Figures 3-4 As shown, an ejection connection plate 20 is provided below the folding laundry basket forming lower mold 1. The left ejection straight rod 16 and the right ejection straight rod 17 are respectively connected to the ejection connection plate 20.

[0038] In this embodiment, the ejection connection plate 20 is used to connect and fix the left ejection straight rod 16 and the right ejection straight rod 17.

[0039] Combined with Figures 1-5 As shown, a bottom plate 21 is provided below the ejection connection plate 20. Two anti-deviation iron blocks 22 are provided on the bottom plate 21. The ejection connection plate 20 is slidably engaged with the anti-deviation iron blocks 22.

[0040] In this embodiment, during the movement of the ejection connecting plate 20, the ejection connecting plate 20 is in sliding fit with the anti-offset iron 22, preventing the left ejection straight rod 16 and the right ejection straight rod 17 from deviating in angle during movement and improving the accuracy of ejection.

[0041] The working principle of the present utility model is as follows:

[0042] During the injection molding process, the folding laundry basket forming lower mold 1 and the folding laundry basket forming upper mold 2 are moved closer to each other, so that the laundry basket forming protrusion 3 is in contact with the laundry basket forming cavity 5, and the two-color molding lower part 4 and the two-color molding upper part 55 form a two-color molding cavity for the plastic part. The molten material passes through the injection main hole 13 in the injection main board 12 for two-color injection molding. One color is in the middle of the plastic part, and the other color is on both sides, completing the two-color overmolding injection molding of the folding laundry basket. After the injection molding is completed, the mold is opened, and the left ejection straight rod 16 and the right ejection block 15 are moved upward. The left ejection block 14 and the right ejection block 15 are used to eject the molded plastic part on the left and right sides over a large area. The inner side of the left ejection block 14 is formed into an arc, and the inner side of the right ejection block 15 is in an arc shape. The arc contact surface ejection structure is adopted, which can ensure the symmetry of ejection and sufficient contact surface, achieving a better ejection and demolding form.

[0043] During injection molding, the left slot 18 is used to place the left ejection block 14, and the right slot 19 is used to place the right ejection block 15 to prevent affecting the molding of the plastic part during injection molding. The ejection connecting plate 20 is used to connect and fix the left ejection straight rod 16 and the right ejection straight rod 17. During the movement of the ejection connecting plate 20, the ejection connecting plate 20 is in sliding fit with the anti-offset iron 22, preventing the left ejection straight rod 16 and the right ejection straight rod 17 from deviating in angle during movement and improving the accuracy of ejection.

[0044] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the technical field to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model.

[0045] Although terms such as the folding laundry basket forming lower die 1, the folding laundry basket forming upper die 2, the laundry basket forming protrusion 3, the two-color forming lower part 4, the laundry basket forming cavity 5, the two-color forming upper part 55, the injection molded part 6, the large-area corner ejecting and demolding assembly 7, the middle and lower part single-color forming area 8, the side lower part single-color forming area 9, the middle and upper part single-color forming area 10, the side upper part single-color forming area 11, the injection molding main board 12, the injection molding main hole 13, the left ejecting block 14, the right ejecting block 15, the left ejecting straight rod 16, the right ejecting straight rod 17, the left embedding groove 18, the right embedding groove 19, the ejecting connecting plate 20, the bottom plate 21, the anti-deviation iron 22, etc. are used more frequently in this text, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present utility model, and interpreting them as any kind of additional restriction is contrary to the spirit of the present utility model.

Claims

1. A two-color rubber-coated foldable laundry basket injection molding mechanism, comprising a foldable laundry basket molding lower mold (1) and a foldable laundry basket molding upper mold (2), characterized in that: The foldable laundry basket molding lower mold (1) is provided with a laundry basket molding protrusion (3), and the laundry basket molding protrusion (3) is provided with a two-color molding lower part (4); the foldable laundry basket molding upper mold (2) is provided with a laundry basket molding cavity (5), and the laundry basket molding cavity (5) is provided with a two-color molding upper part (55); the two-color molding lower part (4) corresponds to the position of the two-color molding upper part (55) and has a matching shape; an injection molded part (6) is provided above the foldable laundry basket molding upper mold (2); and a large-area corner ejection demoulding component (7) capable of reciprocating linear motion in a vertical direction is provided in the foldable laundry basket molding lower mold (1); the large-area corner ejection demoulding component (7) corresponds to the position of the two-color molding lower part (4).

2. The double-color rubber-coated foldable laundry basket injection molding mechanism according to claim 1, characterized in that: The two-color molding lower part (4) comprises a middle lower single-color molding area (8) and two side lower single-color molding areas (9), the middle lower single-color molding area (8) and the side lower single-color molding area (9) are connected, and the large-area corner ejection demoulding component (7) corresponds to the position of the side lower single-color molding area (9).

3. The double-color rubber-coated foldable laundry basket injection molding mechanism according to claim 2, characterized in that: The two-color molding upper part (55) comprises a middle upper single-color molding area (10) and two side upper single-color molding areas (11); the middle upper single-color molding area (10) is arranged opposite to the middle lower single-color molding area (8); and the side upper single-color molding area (11) is arranged opposite to the side lower single-color molding area (9).

4. The double-color rubber-coated foldable laundry basket injection molding mechanism according to claim 3, characterized in that: The injection molded part (6) comprises an injection molded main board (12) arranged above the foldable laundry basket molding upper mold (2), wherein an injection molded main board (12) is provided with an injection molded main hole (13), and the injection molded main hole (13) is connected to the middle and upper single-color molding area (10).

5. The double-color rubber-coated foldable laundry basket injection molding mechanism according to claim 4, characterized in that: The large-area corner ejection demoulding assembly (7) comprises two left ejection blocks (14) and two right ejection blocks (15) arranged in the foldable laundry basket forming lower mold (1), wherein the left ejection blocks (14) and the right ejection blocks (15) are arranged alternately.

6. The double-color rubber-coated foldable laundry basket injection molding mechanism according to claim 5, characterized in that: The inner side of the left ejection block (14) is arc-shaped, and the inner side of the right ejection block (15) is arc-shaped.

7. The double-color rubber-coated foldable laundry basket injection molding mechanism according to claim 6, characterized in that: A left ejection straight rod (16) is provided at the bottom of the left ejection block (14), and a right ejection straight rod (17) is provided at the bottom of the right ejection block (15).

8. The double-color rubber-coated foldable laundry basket injection molding mechanism according to claim 7, characterized in that: The foldable laundry basket forming lower mold (1) is provided with two left embedded grooves (18) and two right embedded grooves (19); the left ejection block (14) is adapted to the shape of the left embedded groove (18), and the right ejection block (15) is adapted to the shape of the right embedded groove (19).

9. The double-color rubber-coated foldable laundry basket injection molding mechanism according to claim 8, characterized in that: An ejection connection plate (20) is provided below the foldable laundry basket forming lower mold (1), and the left ejection straight rod (16) and the right ejection straight rod (17) are respectively connected to the ejection connection plate (20).

10. The double-color rubber-coated foldable laundry basket injection molding mechanism according to claim 9, characterized in that: A bottom plate (21) is provided below the ejection connection plate (20), two anti-deflection irons (22) are provided on the bottom plate (21), and the ejection connection plate (20) and the anti-deflection irons (22) are slidably matched.

Images