Non-destructive rapid demolding mechanism for injection mold of deep-cavity storage box of refrigerator

Abstract

The utility model belongs to the technical field of molds, and relates to a lossless rapid demolding mechanism for an injection mold of a deep-cavity storage box of a refrigerator. The storage box forming die comprises a storage box forming lower die and a storage box forming upper die. In the injection molding process, the molding protrusion and the molding concave cavity are attached to form a complete cavity, molten materials are injected into the cavity through the injection molding part, the side groove structure of the deep-cavity storage box can be synchronously formed in an injection molding mode through the side groove molding part, secondary cutting machining is not needed, the working procedure is shortened, and the production efficiency is improved. The embedded lossless demolding assembly is matched with the storage box forming lower mold to synchronously form an edge structure of a plastic part, the mold is opened after injection molding is completed, the embedded lossless demolding assembly is moved upwards, and the formed plastic part is synchronously ejected and demolded from four edges through abutting fit between the embedded lossless demolding assembly and the edge of the plastic part. And the edge plane structure of the plastic part cannot be damaged during ejection, so that the aim of lossless quick demolding is fulfilled, and the overall quality of the plastic part is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and relates to a non-destructive and rapid demoulding mechanism for an injection mold of a deep cavity storage box of a refrigerator. Background Art

[0002] Refrigerator storage boxes are generally injection molded. The more popular refrigerator storage boxes on the market adopt a structure with side slots for ventilation, and a rim structure is provided at the top for convenient handling by users. In the injection molding process of existing refrigerator storage box injection molds, it is difficult to synchronously form the side slot structure of the storage box. And during the mold opening and ejecting process, if an ejector rod structure is used, it is easy to damage the rim plane structure of the plastic part, affecting the overall quality of the plastic part. Therefore, there is an urgent need to design a non-destructive and rapid demoulding mechanism for an injection mold of a deep cavity storage box of a refrigerator 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 a refrigerator storage box mold with a side wall annular cooling mechanism [Application No.: 202320826450.0], which includes an upper injection mold for a refrigerator storage box and a lower injection mold for a refrigerator storage box. The lower injection mold for the refrigerator storage box is provided with a storage box forming convex part. After the injection molding of the utility model is completed, cooling water is introduced into the upper mold side wall annular cooling structure and the lower mold side wall annular cooling structure. The outer side wall of the formed refrigerator storage box is annularly cooled through the upper mold side wall annular cooling structure, and the inner side wall of the formed refrigerator storage box is cooled through the lower mold side wall annular cooling structure. Summary of the Invention

[0004] The purpose of the utility model is to solve the above problems and provide a non-destructive and rapid demoulding mechanism for an injection mold of a deep cavity storage box of a refrigerator.

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

[0006] A non-destructive and rapid demoulding mechanism for an injection mold of a deep cavity storage box of a refrigerator, including a lower mold for forming a storage box and an upper mold for forming a storage box. An injection molded part is provided above the upper mold for forming a storage box. A forming protrusion is arranged in the lower mold for forming a storage box. A forming cavity is arranged in the upper mold for forming a storage box. The position of the forming protrusion corresponds to that of the forming cavity and the shapes are matched. A side slot forming part is arranged on the forming protrusion. An embedded non-destructive demoulding component is arranged in the lower mold for forming a storage box, and the embedded non-destructive demoulding component is slidably matched with the lower mold for forming a storage box.

[0007] In the above-mentioned non-destructive and rapid demoulding mechanism of the injection mould for the deep cavity storage box of the refrigerator, the embedded non-destructive demoulding component includes four non-destructive demoulding ejector blocks arranged in the lower mould for forming the storage box. A sunken auxiliary forming part is arranged inside the non-destructive demoulding ejector block, and the sunken auxiliary forming part is integrally formed with the non-destructive demoulding ejector block.

[0008] In the above-mentioned non-destructive and rapid demoulding mechanism of the injection mould for the deep cavity storage box of the refrigerator, the horizontal height of the sunken auxiliary forming part is less than that of the non-destructive demoulding ejector block, and the cross-sectional area of the sunken auxiliary forming part is less than that of the non-destructive demoulding ejector block.

[0009] In the above-mentioned non-destructive and rapid demoulding mechanism of the injection mould for the deep cavity storage box of the refrigerator, a forming ring groove for the edge of the storage box is arranged in the lower mould for forming the storage box, and the position of the sunken auxiliary forming part corresponds to and the shape matches that of the forming ring groove for the edge of the storage box.

[0010] In the above-mentioned non-destructive and rapid demoulding mechanism of the injection mould for the deep cavity storage box of the refrigerator, two straight ejector rods are arranged at the bottom of the non-destructive demoulding ejector block, and the straight ejector rods penetrate through the lower mould for forming the storage box.

[0011] In the above-mentioned non-destructive and rapid demoulding mechanism of the injection mould for the deep cavity storage box of the refrigerator, an ejector rod connecting plate is arranged below the lower mould for forming the storage box, and the straight ejector rods are connected to the ejector rod connecting plate.

[0012] In the above-mentioned non-destructive and rapid demoulding mechanism of the injection mould for the deep cavity storage box of the refrigerator, a bottom plate is arranged below the ejector rod connecting plate, and two anti-deviation angle irons arranged symmetrically along the center line of the bottom plate are arranged on the bottom plate. The ejector rod connecting plate is in sliding fit with the anti-deviation angle irons.

[0013] In the above-mentioned non-destructive and rapid demoulding mechanism of the injection mould for the deep cavity storage box of the refrigerator, the side groove forming part includes a plurality of side groove forming ribs arranged on the side surface of the forming protrusion.

[0014] In the above-mentioned non-destructive and rapid demoulding mechanism of the injection mould for the deep cavity storage box of the refrigerator, the width of the side groove forming rib gradually becomes larger from top to bottom.

[0015] In the above-mentioned non-destructive and rapid demoulding mechanism of the injection mould for the deep cavity storage box of the refrigerator, the injection moulding part includes an injection main board arranged above the upper mould for forming the storage box, and an injection main hole is arranged in the injection main board.

[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 lower mold for forming the storage box and the upper mold for forming the storage box are brought closer to each other, so that the forming protrusions are fitted with the forming cavities to form a complete cavity. The molten material is injected into the cavity through the injection part. The side groove structure of the deep cavity storage box can be injection molded synchronously through the side groove forming part, without the need for secondary cutting processing, shortening the process. The embedded non-destructive demolding component cooperates with the lower mold for forming the storage box to synchronously form the edge structure of the plastic part. After the injection molding is completed, the mold is opened, and the embedded non-destructive demolding component is moved upward. Through the abutting cooperation between the embedded non-destructive demolding component and the edge of the plastic part, the formed plastic part is ejected and demolded synchronously from the four edges. When ejecting, the edge plane structure of the plastic part will not be damaged, achieving the purpose of non-destructive and rapid demolding, and greatly improving the overall quality of the plastic part.

[0018] 2. The horizontal height of the sinking auxiliary forming part in the present utility model is less than the horizontal height of the non-destructive demolding top block, which is convenient for assisting in forming the edge structure of the plastic part.

[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 structural schematic diagram of the embedded non-destructive demolding component.

[0023] Figure 4 is the structural schematic diagram of the upper mold for forming the storage box.

[0024] In the figure: lower mold 1 for forming the storage box, upper mold 2 for forming the storage box, injection part 3, forming protrusion 4, forming cavity 5, side groove forming part 6, embedded non-destructive demolding component 7, non-destructive demolding top block 8, sinking auxiliary forming part 9, storage box edge forming ring groove 10, straight ejector rod 11, ejector rod connecting plate 12, bottom plate 13, anti-deviation iron 14, side groove forming rib 15, injection main board 16, injection main hole 17. Detailed Embodiment

[0025] The present utility model will be further described below with reference to the drawings.

[0026] As Figures 1-4As shown in the figure, a non-destructive and rapid demoulding mechanism for an injection mould of a deep cavity storage box of a refrigerator includes a lower mould 1 for forming the storage box and an upper mould 2 for forming the storage box. An injection moulding part 3 is arranged above the upper mould 2 for forming the storage box. A forming protrusion 4 is arranged in the lower mould 1 for forming the storage box. A forming cavity 5 is arranged in the upper mould 2 for forming the storage box. The positions of the forming protrusion 4 and the forming cavity 5 correspond to each other and their shapes are matched. A side groove forming part 6 is arranged on the forming protrusion 4. An embedded non-destructive demoulding component 7 is arranged in the lower mould 1 for forming the storage box. The embedded non-destructive demoulding component 7 is slidably matched with the lower mould 1 for forming the storage box.

[0027] In this embodiment, during the injection moulding process, the lower mould 1 for forming the storage box and the upper mould 2 for forming the storage box are moved closer to each other so that the forming protrusion 4 and the forming cavity 5 are fitted together to form a complete cavity. The molten material is injected into the cavity through the injection moulding part 3. The side groove structure of the deep cavity storage box can be injection moulded synchronously through the side groove forming part 6 without secondary cutting and processing, shortening the process. The embedded non-destructive demoulding component 7 cooperates with the lower mould 1 for forming the storage box to synchronously form the edge structure of the plastic part. After the injection moulding is completed, the mould is opened. The embedded non-destructive demoulding component 7 is moved upward. Through the abutting cooperation between the embedded non-destructive demoulding component 7 and the edge of the plastic part, the formed plastic part is ejected and demoulded synchronously from the four edges. When ejecting, the edge plane structure of the plastic part will not be damaged, achieving the purpose of non-destructive and rapid demoulding and greatly improving the overall quality of the plastic part.

[0028] Combined with Figures 1-4 As shown in the figure, the embedded non-destructive demoulding component 7 includes four non-destructive demoulding ejector blocks 8 arranged in the lower mould 1 for forming the storage box. A sunken auxiliary forming part 9 is arranged inside the non-destructive demoulding ejector block 8. The sunken auxiliary forming part 9 is integrally formed with the non-destructive demoulding ejector block 8.

[0029] Specifically, during the injection moulding process, the sunken auxiliary forming part 9 cooperates with the lower mould 1 for forming the storage box to synchronously form the edge structure of the plastic part. After the injection moulding is completed, the mould is opened. The non-destructive demoulding ejector block 8 is moved upward. Through the abutting cooperation between the sunken auxiliary forming part 9 and the edge of the plastic part, the formed plastic part is ejected and demoulded synchronously from the four edges. When ejecting, the edge plane structure of the plastic part will not be damaged, achieving the purpose of non-destructive and rapid demoulding and greatly improving the overall quality of the plastic part. The ejection contact surface is flat, avoiding the appearance of dot-shaped ejection marks.

[0030] Combined with Figure 2 、 Figure 3 As shown in the figure, the horizontal height of the sunken auxiliary forming part 9 is less than the horizontal height of the non-destructive demoulding ejector block 8, and the cross-sectional area of the sunken auxiliary forming part 9 is less than the cross-sectional area of the non-destructive demoulding ejector block 8.

[0031] In this embodiment, the horizontal height of the sunken auxiliary forming part 9 is less than the horizontal height of the non-destructive demoulding ejector block 8, which is convenient for assisting in forming the edge structure of the plastic part.

[0032] The lower mold 1 for forming the storage box is provided with a ring groove 10 for forming the edge of the storage box, and the sunken auxiliary forming part 9 corresponds to the position of the ring groove 10 for forming the edge of the storage box and is matched in shape.

[0033] In this embodiment, during the injection molding process, the ring groove 10 for forming the edge of the storage box is used to assist in forming the annular edge structure of the plastic part.

[0034] Combined with Figure 3 As shown, two straight ejector rods 11 are provided at the bottom of the non-destructive demolding ejector block 8, and the straight ejector rods 11 penetrate through the lower mold 1 for forming the storage box.

[0035] In this embodiment, the straight ejector rods 11 are used to move the non-destructive demolding ejector block 8 to perform the ejection and demolding action.

[0036] A connecting plate 12 for ejector rods is provided below the lower mold 1 for forming the storage box, and the straight ejector rods 11 are connected to the connecting plate 12 for ejector rods.

[0037] In this embodiment, the connecting plate 12 for ejector rods is used to connect and fix the straight ejector rods 11.

[0038] A bottom plate 13 is provided below the connecting plate 12 for ejector rods, and two anti-deviation iron blocks 14 are provided on the bottom plate 13 symmetrically along the center line of the bottom plate 13. The connecting plate 12 for ejector rods is slidably matched with the anti-deviation iron blocks 14.

[0039] In this embodiment, during the ejection and demolding process, the connecting plate 12 for ejector rods drives the straight ejector rods 11 and the non-destructive demolding ejector block 8 to move. The connecting plate 12 for ejector rods is slidably matched with the anti-deviation iron blocks 14, which plays a limiting role for the connecting plate 12 for ejector rods, avoiding angular deviation of the connecting plate 12 for ejector rods during the movement and ensuring the accuracy of ejection.

[0040] Combined with Figure 2 As shown, the side groove forming part 6 includes a plurality of side groove forming ribs 15 arranged on the side surface of the forming protrusion 4.

[0041] In this embodiment, during the injection molding process, the side groove forming ribs 15 can simultaneously injection mold the side groove structure of the deep cavity storage box, eliminating the need for secondary cutting processing and shortening the process.

[0042] Combined with Figure 1 、 Figure 2 As shown, the width of the side groove forming rib 15 gradually increases from top to bottom.

[0043] In this embodiment, the width of the side groove forming rib 15 gradually increases from top to bottom, and can form arrow-shaped side grooves.

[0044] Combined with Figure 1As shown, the injection molded part 3 includes an injection molding main board 16 disposed above the lower mold 2 for forming the storage box. An injection molding main hole 17 is provided in the injection molding main board 16.

[0045] In this embodiment, during the injection molding process, the molten material is injected into the mold cavity through the injection molding main hole 17 in the injection molding main board 16 to complete the injection molding.

[0046] The working principle of the present utility model is:

[0047] During the injection molding process, the lower mold 1 for forming the storage box and the upper mold 2 for forming the storage box are moved closer to each other, so that the forming protrusion 4 is fitted with the forming cavity 5 to form a complete mold cavity. The molten material is injected into the mold cavity through the injection molding main hole 17 in the injection molding main board 16. The side groove forming rib 15 can synchronously injection mold the side groove structure of the deep cavity storage box, eliminating the need for secondary cutting processing, shortening the process. The edge forming ring groove 10 of the storage box and the depression auxiliary forming part 9 cooperate with the lower mold 1 for forming the storage box to synchronously form the edge structure of the plastic part. After the injection molding is completed, the mold is opened, and the non-destructive demolding ejector block 8 is moved upward. Through the abutting cooperation between the depression auxiliary forming part 9 and the edge of the plastic part, the formed plastic part is synchronously ejected and demolded from the four edges. When ejecting, the edge plane structure of the plastic part will not be damaged, achieving the purpose of non-destructive and rapid demolding, greatly improving the overall quality of the plastic part. The ejecting contact surface is flat, avoiding the appearance of dot-shaped ejecting marks.

[0048] The horizontal height of the depression auxiliary forming part 9 is less than the horizontal height of the non-destructive demolding ejector block 8, which is convenient for assisting in forming the edge structure of the plastic part. The straight ejector rod 11 is used to move the non-destructive demolding ejector block 8 to perform the ejecting and demolding action. The ejector rod connecting plate 12 is used to connect and fix the straight ejector rod 11.

[0049] During the ejecting and demolding process, the ejector rod connecting plate 12 drives the straight ejector rod 11 and the non-destructive demolding ejector block 8 to move. The ejector rod connecting plate 12 is slidably engaged with the anti-offset iron 14, which plays a limiting role on the ejector rod connecting plate 12 to prevent the ejector rod connecting plate 12 from deviating in angle during the movement, ensuring the ejecting accuracy. The width of the side groove forming rib 15 gradually increases from top to bottom, and can form an arrow-shaped side groove.

[0050] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art of the present utility model can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present utility model.

[0051] Although terms such as the lower mold 1 for forming the storage box, the upper mold 2 for forming the storage box, the injection molded part 3, the forming protrusion 4, the forming cavity 5, the side groove forming part 6, the embedded non-destructive demolding assembly 7, the non-destructive demolding ejector block 8, the sunken auxiliary forming part 9, the storage box edge forming ring groove 10, the straight ejector rod 11, the ejector rod connecting plate 12, the bottom plate 13, the anti-offset iron 14, the side groove forming rib 15, the injection main board 16, the injection main hole 17, etc. are used more frequently in this text, the possibility of using other terms is not excluded. These terms are only used 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 non-destructive and rapid demolding mechanism for an injection mold of a deep cavity storage box of a refrigerator, comprising a lower mold (1) for forming the storage box and an upper mold (2) for forming the storage box, characterized in that, Above the upper mold (2) for forming the storage box, there is an injection molded part (3). Inside the lower mold (1) for forming the storage box, there is a forming protrusion (4). Inside the upper mold (2) for forming the storage box, there is a forming cavity (5). The position of the forming protrusion (4) corresponds to that of the forming cavity (5) and their shapes are adapted to each other. On the forming protrusion (4), there is a side groove forming part (6). Inside the lower mold (1) for forming the storage box, there is an embedded non-destructive demolding assembly (7). The embedded non-destructive demolding assembly (7) is slidably engaged with the lower mold (1) for forming the storage box. The embedded non-destructive demolding assembly (7) includes four non-destructive demolding ejector blocks (8) arranged inside the lower mold (1) for forming the storage box. Inside the non-destructive demolding ejector block (8), there is a sunken auxiliary forming part (9). The sunken auxiliary forming part (9) is integrally formed with the non-destructive demolding ejector block (8). The horizontal height of the sunken auxiliary forming part (9) is less than that of the non-destructive demolding ejector block (8). The cross-sectional area of the sunken auxiliary forming part (9) is less than that of the non-destructive demolding ejector block (8).

2. The non-destructive and rapid demolding mechanism of the injection mold for the deep cavity storage box of the refrigerator according to claim 1, characterized in that, Inside the lower mold (1) for forming the storage box, there is a storage box edge forming ring groove (10). The position of the sunken auxiliary forming part (9) corresponds to that of the storage box edge forming ring groove (10) and their shapes are adapted to each other.

3. The non-destructive and rapid demolding mechanism of the injection mold for the deep cavity storage box of the refrigerator according to claim 2, characterized in that, At the bottom of the non-destructive demolding ejector block (8), there are two straight ejector rods (11). The straight ejector rods (11) penetrate through the lower mold (1) for forming the storage box.

4. The non-destructive and rapid demolding mechanism of the injection mold for the deep cavity storage box of the refrigerator according to claim 3, characterized in that, Below the lower mold (1) for forming the storage box, there is an ejector rod connecting plate (12). The straight ejector rods (11) are connected to the ejector rod connecting plate (12).

5. The non-destructive and rapid demolding mechanism of the injection mold for the deep cavity storage box of the refrigerator according to claim 4, characterized in that, Below the ejector rod connecting plate (12), there is a bottom plate (13). On the bottom plate (13), there are two anti-deviation iron blocks (14) symmetrically arranged along the center line of the bottom plate (13). The ejector rod connecting plate (12) is slidably engaged with the anti-deviation iron blocks (14).

6. The non-destructive and rapid demolding mechanism of the injection mold for the deep cavity storage box of the refrigerator according to claim 5, wherein, The side groove forming part (6) includes a number of side groove forming ribs (15) arranged on the side surface of the forming protrusion (4).

7. The non-destructive and rapid demolding mechanism of the injection mold for the deep cavity storage box of the refrigerator according to claim 6, characterized in that, The width of the side groove forming rib (15) gradually increases from top to bottom.

8. The non-destructive and rapid demolding mechanism of the injection mold for the deep cavity storage box of the refrigerator according to claim 7, characterized in that, The injection molded part (3) includes an injection molded main board (16) arranged above the upper mold (2) for forming the storage box. Inside the injection molded main board (16), there is an injection molded main hole (17).

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