Four-point in-mold ejection mechanism of wardrobe rotating door injection mold

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a four-point type in-mold ejection mechanism of a wardrobe rotating door injection mold. The forming die comprises a wardrobe rotating door forming lower die and a wardrobe rotating door forming upper die. In the injection molding process, molten materials are injected into the four-point type injection molding flow dividing part through the injection molding piece, and are synchronously injected from the four injection molding openings in a four-point mode through the four-point type injection molding flow dividing part, so that the injection molding efficiency is improved; during injection molding, the four-point type in-mold integrated forming ejection assembly is matched with a wardrobe rotating door to form the lower portion so as to form a complete lower portion structure of a plastic part, mold opening is conducted after injection molding is completed, the four-point type in-mold integrated forming ejection assembly is moved upwards, the formed plastic part is ejected and demolded, four-point type ejection demolding is adopted, and the mold opening efficiency is greatly improved. The plastic part is prevented from toppling forwards, backwards, leftwards and rightwards in the ejection process, the ejection stability is improved, meanwhile, an in-mold auxiliary forming structure is adopted, the internal space of the mold is compressed, and the structure is compact and reasonable.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a four-point in-mold ejection mechanism of an injection mold for a wardrobe rotary door. Background Art

[0002] In rental housing, most landlords use assembled wardrobes to reduce costs. Wardrobe doors are typically made of plastic to reduce cost and weight. During the injection molding process, existing wardrobe revolving door injection molds require ejection of the molded part after the mold is opened. Due to the large area of the door, the part is prone to tipping over, both forward and backward, and the ejection stability is relatively poor. Furthermore, the bulky ejection mechanism requires a larger in-mold space, resulting in a bulky mold. Therefore, there is an urgent need to design a four-point in-mold ejection mechanism for wardrobe revolving door injection molds that can overcome the above-mentioned drawbacks.

[0003] In order to overcome the shortcomings of the existing technology, people have proposed various solutions through continuous exploration. For example, a Chinese patent discloses a wardrobe door panel injection mold with a long-salary anti-eccentricity mechanism [application number: 202122159243.8]. It includes an upper template and a lower template. A molding cavity is provided between the upper template and the lower template. A core pulling plate is horizontally inserted into the molding cavity on each side of the molding cavity. Three core blocks are fixedly connected to the core pulling plate and inserted horizontally into the molding cavity. The three core blocks on the two core pulling plates correspond to each other one by one and the inner ends of the corresponding two core blocks are abutted. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems and provide a four-point in-mold ejection mechanism for a wardrobe rotary door injection mold.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A four-point in-mold ejection mechanism for a wardrobe revolving door injection mold comprises a wardrobe revolving door molding lower mold and a wardrobe revolving door molding upper mold, an injection molded part and a four-point injection molding diverter portion are provided above the wardrobe revolving door molding upper mold, a wardrobe revolving door molding upper portion is provided in the wardrobe revolving door molding upper mold, a wardrobe revolving door molding lower portion is provided in the wardrobe revolving door molding lower mold, the wardrobe revolving door molding upper portion and the wardrobe revolving door molding lower portion correspond in position and match in shape, a four-point in-mold integrated molding ejection component extending into the wardrobe revolving door molding lower portion is further provided in the wardrobe revolving door molding lower mold, and the four-point in-mold integrated molding ejection component is slidably matched with the wardrobe revolving door molding lower mold.

[0007] In the above-mentioned four-point in-mold ejection mechanism of the wardrobe rotating door injection mold, the four-point in-mold integrated molding ejection component includes four in-mold molding heads arranged in the wardrobe rotating door molding lower mold, and the in-mold molding heads are adapted to the shape of the wardrobe rotating door molding lower part, and the four in-mold molding heads are distributed in a rectangular array along the center point of the wardrobe rotating door molding lower mold.

[0008] In the above-mentioned four-point in-mold ejection mechanism of the wardrobe rotating door injection mold, an ejection connecting rod is provided at the bottom of the in-mold forming head. The ejection connecting rod is integrally formed with the in-mold forming head. The ejection connecting rod is inclined and slides with the lower mold of the wardrobe rotating door forming.

[0009] In the above-mentioned four-point in-mold ejection mechanism of the injection mold for the wardrobe rotating door, a shaft molding groove is provided on the inner side of the in-mold molding head.

[0010] In the above-mentioned four-point in-mold ejection mechanism of the wardrobe rotating door injection mold, the wardrobe rotating door molding upper part includes a wardrobe rotating door molding cavity arranged in the wardrobe rotating door molding upper mold, and the in-mold molding head is arranged opposite to the wardrobe rotating door molding cavity.

[0011] In the above-mentioned four-point in-mold ejection mechanism of the wardrobe rotating door injection mold, the wardrobe rotating door molding lower part includes a wardrobe rotating door molding protrusion arranged in the wardrobe rotating door molding lower mold, the wardrobe rotating door molding cavity corresponds to the position of the wardrobe rotating door molding protrusion and the shape is matched, and the wardrobe rotating door molding protrusion is slidably matched with the in-mold molding head.

[0012] In the above-mentioned four-point in-mold ejection mechanism of the wardrobe rotating door injection mold, a mold closing protrusion is provided in the wardrobe rotating door molding upper mold, and a mold closing cavity is provided in the wardrobe rotating door molding lower mold, and the mold closing protrusion is arranged opposite to the mold closing cavity.

[0013] In the above-mentioned four-point in-mold ejection mechanism of the wardrobe rotating door injection mold, four door body shaft mounting protrusions are provided on the side of the wardrobe rotating door molding protrusion, and four door body shaft mounting recesses are provided in the mold closing protrusion, and the door body shaft mounting protrusions are arranged opposite to the door body shaft mounting recesses.

[0014] In the above-mentioned four-point in-mold ejection mechanism of the wardrobe rotating door injection mold, the injection molded part includes an injection molding main board arranged above the wardrobe rotating door molding upper mold.

[0015] In the above-mentioned four-point in-mold ejection mechanism of the wardrobe rotating door injection mold, the four-point injection diversion part includes an injection diversion plate arranged between the injection main board and the wardrobe rotating door molding upper mold, and four diversion ports are provided at the bottom of the injection diversion plate.

[0016] Compared with the existing technology, the advantages of this utility model are:

[0017] 1. During the injection molding process, the utility model brings the wardrobe revolving door molding lower mold and the wardrobe revolving door molding upper mold close to each other, so that the wardrobe revolving door molding upper part and the wardrobe revolving door molding lower part are abutted and matched to form a complete cavity, and the molten material is injected into the four-point injection molding diverter through the injection molding part, and the molten material is injected synchronously from four injection ports through the four-point injection molding diverter, thereby accelerating the injection molding efficiency. During injection molding, the four-point in-mold integrated molding ejector assembly cooperates with the wardrobe revolving door molding lower part to form a complete lower structure of the plastic part. After the injection molding is completed, the mold is opened, and the molded plastic part is ejected and demolded by moving the four-point in-mold integrated molding ejector assembly upward. The four-point ejection demolding is adopted to avoid the plastic part from tipping forward, backward, left, and right during the ejection process, thereby improving the ejection stability. At the same time, the in-mold auxiliary molding structure is adopted to compress the internal space of the mold, and the structure is compact and reasonable.

[0018] 2. In the injection molding process of the present invention, the door body rotating shaft installation protrusion and the door body rotating shaft installation recess cooperate to simultaneously form four door body rotating shaft installation structures.

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

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

[0021] Figure 2 It is a structural diagram of the four-point injection molding diversion part.

[0022] Figure 3 It is a structural diagram of the lower mold for forming a wardrobe swing door.

[0023] Figure 4 It is a partial structural diagram of the utility model.

[0024] Figure 5 It is a structural diagram of a four-point in-mold integrated ejection assembly.

[0025] Figure 6 It is a structural diagram of the upper mold for forming a wardrobe pivot door.

[0026] In the figure: wardrobe revolving door molding lower mold 1, wardrobe revolving door molding upper mold 2, injection molded part 3, four-point injection molding diverter part 44, wardrobe revolving door molding upper part, wardrobe revolving door molding lower part 5, four-point in-mold integrated molding ejector assembly 6, in-mold molding head 7, ejection connecting rod 8, shaft molding groove 9, wardrobe revolving door molding cavity 10, wardrobe revolving door molding protrusion 11, mold closing protrusion 12, mold closing cavity 13, door body rotating shaft mounting protrusion 14, door body rotating shaft mounting recess 15, injection molding main board 16, injection molding diverter plate 17, diversion port 18. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] like Figure 1-6 As shown, a four-point in-mold ejection mechanism of a wardrobe rotating door injection mold includes a wardrobe rotating door molding lower mold 1 and a wardrobe rotating door molding upper mold 2, an injection molded part 3 and a four-point injection molding diverter 44 are provided above the wardrobe rotating door molding upper mold 2, a wardrobe rotating door molding upper part 4 is provided in the wardrobe rotating door molding upper mold 2, a wardrobe rotating door molding lower part 5 is provided in the wardrobe rotating door molding lower mold 1, the wardrobe rotating door molding upper part 4 corresponds to the position of the wardrobe rotating door molding lower part 5 and the shape is matched, the wardrobe rotating door molding lower mold 1 is also provided with a four-point in-mold integrated molding ejection component 6 extending into the wardrobe rotating door molding lower part 5, and the four-point in-mold integrated molding ejection component 6 is slidably matched with the wardrobe rotating door molding lower mold 1.

[0029] In this embodiment, during the injection molding process, the wardrobe revolving door molding lower mold 1 and the wardrobe revolving door molding upper mold 2 are brought close to each other, so that the wardrobe revolving door molding upper part 4 and the wardrobe revolving door molding lower part 5 are abutted and matched to form a complete cavity, and the molten material is injected into the four-point injection molding diverter 44 through the injection molding part 3, and the molten material is injected synchronously from the four injection ports through the four-point injection molding diverter 44 to speed up the injection molding efficiency. During injection molding, the four-point in-mold integrated molding ejector assembly 6 cooperates with the wardrobe revolving door molding lower part 5 to form the complete lower structure of the plastic part. After the injection molding is completed, the mold is opened, and the molded plastic part is ejected and demolded by moving the four-point in-mold integrated molding ejector assembly 6 upward. The four-point ejection demolding is adopted to avoid the plastic part from tipping forward, backward, left and right during the ejection process, thereby improving the ejection stability. At the same time, the in-mold auxiliary molding structure is adopted to compress the internal space of the mold, and the structure is compact and reasonable.

[0030] Combine Figure 1-6As shown, the four-point in-mold integrated molding ejection component 6 includes four in-mold molding heads 7 arranged in the wardrobe rotating door molding lower mold 1, and the in-mold molding heads 7 are adapted to the shape of the wardrobe rotating door molding lower part 5. The four in-mold molding heads 7 are distributed in a rectangular array along the center point of the wardrobe rotating door molding lower mold 1. The bottom of the in-mold molding head 7 is provided with an ejection connecting rod 8, and the ejection connecting rod 8 is integrally formed with the in-mold molding head 7. The ejection connecting rod 8 is inclined and slidably cooperates with the wardrobe rotating door molding lower mold 1.

[0031] Specifically, during the injection molding process, the four in-mold molding heads 7 cooperate with the wardrobe revolving door molding lower part 5 to form the complete lower structure of the plastic part. After the injection molding is completed, the mold is opened and the ejection connecting rod 8 is moved upward to drive the in-mold molding heads 7 to move synchronously to eject the molded plastic part. The four-point ejection and demolding is adopted to prevent the plastic part from tilting forward, backward, left and right during the ejection process, thereby improving the stability of the ejection. At the same time, the in-mold auxiliary molding structure is adopted to compress the internal space of the mold, and the structure is compact and reasonable.

[0032] Combine Figure 4 、 Figure 5 As shown, a shaft forming groove 9 is provided on the inner side of the in-mold forming head 7 .

[0033] In this embodiment, during the injection molding process, the shaft molding groove 9 can simultaneously mold the four shaft structures of the plastic part without the need for secondary welding.

[0034] The wardrobe rotating door forming upper part 4 includes a wardrobe rotating door forming cavity 10 arranged in the wardrobe rotating door forming upper mold 2, and the in-mold forming head 7 is arranged opposite to the wardrobe rotating door forming cavity 10. The wardrobe rotating door forming lower part 5 includes a wardrobe rotating door forming protrusion 11 arranged in the wardrobe rotating door forming lower mold 1. The wardrobe rotating door forming cavity 10 corresponds to the position of the wardrobe rotating door forming protrusion 11 and the shape is matched. The wardrobe rotating door forming protrusion 11 is slidably matched with the in-mold forming head 7.

[0035] In this embodiment, during the injection molding process, the wardrobe rotating door molding cavity 10, the wardrobe rotating door molding protrusion 11 and the in-mold molding head 7 cooperate to form a complete molding cavity.

[0036] A mold closing protrusion 12 is provided in the upper mold 2 for forming the wardrobe rotating door, and a mold closing cavity 13 is provided in the lower mold 1 for forming the wardrobe rotating door. The mold closing protrusion 12 and the mold closing cavity 13 are arranged opposite to each other.

[0037] In this embodiment, when the mold is closed, the mold closing protrusion 12 fits in with the mold closing cavity 13, preventing the molten material from flowing out from the gap, and the sealing degree is better.

[0038] Combine Figure 3 、 Figure 6As shown, four door body shaft mounting protrusions 14 are provided on the side of the wardrobe rotating door molding protrusion 11, and four door body shaft mounting recesses 15 are provided in the mold closing protrusion 12. The door body shaft mounting protrusions 14 are arranged opposite to the door body shaft mounting recesses 15.

[0039] In this embodiment, during the injection molding process, the door body rotation shaft installation protrusion 14 and the door body rotation shaft installation recess 15 cooperate to simultaneously form four door body rotation shaft installation structures.

[0040] Combine Figure 1-2 As shown, the injection molded part 3 includes an injection molding main board 16 arranged above the wardrobe rotating door molding upper mold 2, and the four-point injection molding diversion part 44 includes an injection molding diversion plate 17 arranged between the injection molding main board 16 and the wardrobe rotating door molding upper mold 2, and four diversion ports 18 are provided at the bottom of the injection molding diversion plate 17.

[0041] In this embodiment, during the injection molding process, the molten material is injected from the injection molding main board 16 into the injection molding diverter plate 17 for diversion, and then injected synchronously through the four diversion ports 18 to speed up the injection molding efficiency.

[0042] The working principle of this utility model is:

[0043] During the injection molding process, the wardrobe swing door molding lower mold 1 and the wardrobe swing door molding upper mold 2 are brought close to each other, the wardrobe swing door molding cavity 10, the wardrobe swing door molding protrusion 11 and the in-mold molding head 7 cooperate to form a complete cavity, and the molten material is injected from the injection molding main board 16 into the injection molding diverter plate 17 for diversion, and then four-point synchronous injection is performed through four diversion ports 18 to speed up the injection molding efficiency. During injection molding, the four in-mold molding heads 7 cooperate with the wardrobe swing door molding protrusion 11 to form the complete lower structure of the plastic part. After the injection molding is completed, the mold is opened, and the ejection connecting rod 8 is moved upward to drive the in-mold molding head 7 to move synchronously to eject the molded plastic part. The four-point ejection demoulding is adopted to avoid the plastic part from tipping forward, backward, left and right during the ejection process, thereby improving the ejection stability. At the same time, the in-mold auxiliary molding structure is adopted to compress the internal space of the mold, and the structure is compact and reasonable.

[0044] During the injection molding process, the shaft molding groove 9 can simultaneously mold the four shaft structures of the plastic part without the need for secondary welding. When the mold is closed, the mold closing protrusion 12 fits with the mold closing cavity 13 to prevent the molten material from flowing out of the gap, and the sealing degree is better.

[0045] During the injection molding process, the door body rotation shaft installation protrusion 14 and the door body rotation shaft installation recess 15 cooperate to simultaneously mold four door body rotation shaft installation structures.

[0046] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them with similar methods, without departing from the spirit of the present invention.

[0047] Although this document frequently uses terms such as wardrobe revolving door molding lower mold 1, wardrobe revolving door molding upper mold 2, injection molded part 3, four-point injection molding diverter 44, wardrobe revolving door molding upper part, wardrobe revolving door molding lower part 5, four-point in-mold integrated molding ejector assembly 6, in-mold molding head 7, ejector connecting rod 8, shaft molding groove 9, wardrobe revolving door molding cavity 10, wardrobe revolving door molding protrusion 11, mold clamping protrusion 12, mold clamping cavity 13, door body rotating shaft mounting protrusion 14, door body rotating shaft mounting recess 15, injection molding main plate 16, injection molding diverter plate 17, diverter port 18, etc., the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention. Interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A four-point in-mold ejection mechanism for a wardrobe revolving door injection mold, comprising a wardrobe revolving door molding lower mold (1) and a wardrobe revolving door molding upper mold (2), characterized in that: An injection molded part (3) and a four-point injection molded diverter (44) are provided above the wardrobe rotating door molding upper mold (2); a wardrobe rotating door molding upper part (4) is provided in the wardrobe rotating door molding upper mold (2); a wardrobe rotating door molding lower part (5) is provided in the wardrobe rotating door molding lower mold (1); the wardrobe rotating door molding upper part (4) corresponds to the position of the wardrobe rotating door molding lower part (5) and has a shape that matches the position of the wardrobe rotating door molding lower part (5); a four-point in-mold integrated molding ejection component (6) extending into the wardrobe rotating door molding lower part (5) is further provided in the wardrobe rotating door molding lower mold (1); the four-point in-mold integrated molding ejection component (6) is slidably matched with the wardrobe rotating door molding lower mold (1).

2. The four-point in-mold ejection mechanism of the wardrobe swing door injection mold according to claim 1, characterized in that: The four-point in-mold integrated molding ejection assembly (6) comprises four in-mold molding heads (7) arranged in the wardrobe rotary door molding lower mold (1), the in-mold molding heads (7) being adapted to the shape of the wardrobe rotary door molding lower part (5), and the four in-mold molding heads (7) being distributed in a rectangular array along the center point of the wardrobe rotary door molding lower mold (1).

3. The four-point in-mold ejection mechanism of the wardrobe swing door injection mold according to claim 2, characterized in that: An ejection connecting rod (8) is provided at the bottom of the in-mold forming head (7), and the ejection connecting rod (8) is integrally formed with the in-mold forming head (7). The ejection connecting rod (8) is arranged in an inclined manner and is slidably matched with the wardrobe rotating door forming lower mold (1).

4. The four-point in-mold ejection mechanism of the wardrobe rotating door injection mold according to claim 3 is characterized in that: A shaft forming groove (9) is provided on the inner side of the in-mold forming head (7).

5. The four-point in-mold ejection mechanism of the wardrobe swing door injection mold according to claim 4, characterized in that: The wardrobe rotating door forming upper part (4) comprises a wardrobe rotating door forming cavity (10) arranged in the wardrobe rotating door forming upper die (2), and the in-die forming head (7) is arranged opposite to the wardrobe rotating door forming cavity (10).

6. The four-point in-mold ejection mechanism of the wardrobe swing door injection mold according to claim 5, characterized in that: The wardrobe rotating door molding lower part (5) comprises a wardrobe rotating door molding protrusion (11) arranged in the wardrobe rotating door molding lower mold (1); the wardrobe rotating door molding cavity (10) corresponds to the position of the wardrobe rotating door molding protrusion (11) and matches the shape thereof; the wardrobe rotating door molding protrusion (11) is slidably matched with the molding head (7) in the mold.

7. The four-point in-mold ejection mechanism of the wardrobe swing door injection mold according to claim 6, characterized in that: A mold closing protrusion (12) is provided in the upper mold (2) for forming the wardrobe rotating door, and a mold closing cavity (13) is provided in the lower mold (1) for forming the wardrobe rotating door. The mold closing protrusion (12) and the mold closing cavity (13) are arranged opposite to each other.

8. The four-point in-mold ejection mechanism of the wardrobe swing door injection mold according to claim 7, characterized in that: Four door body rotating shaft mounting protrusions (14) are provided on the side of the wardrobe rotating door forming protrusion (11), and four door body rotating shaft mounting recesses (15) are provided in the mold clamping protrusion (12), and the door body rotating shaft mounting protrusions (14) are arranged opposite to the door body rotating shaft mounting recesses (15).

9. The four-point in-mold ejection mechanism of the wardrobe swing door injection mold according to claim 8, characterized in that: The injection molded part (3) comprises an injection molded main board (16) arranged above the wardrobe rotating door forming upper mold (2).

10. The four-point in-mold ejection mechanism of the wardrobe swing door injection mold according to claim 9, characterized in that: The four-point injection molding diversion portion (44) comprises an injection molding diversion plate (17) arranged between an injection molding main plate (16) and a wardrobe rotating door molding upper mold (2), and four diversion ports (18) are provided at the bottom of the injection molding diversion plate (17).

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