Refrigerator drawer injection molding device easy to demould

Abstract

The utility model discloses a refrigerator drawer injection molding device easy to demould, which belongs to the field of injection molding, and comprises a convex mould plate arranged through an upper fixing plate and a concave mould plate arranged through a lower fixing plate, a cavity is formed between a convex mould of the convex mould plate and a concave mould of the concave mould plate, an electromagnet is arranged on the lower fixing plate, and the electromagnet is connected with the convex mould of the convex mould plate and the concave mould of the concave mould plate. An electromagnet is arranged on the female die plate, an electromagnetic vibration assembly matched with the electromagnet is arranged on the female die plate, an ejector plate is arranged at the position, located at the bottom of the cavity, in the female die plate, the electromagnet is matched with the electromagnetic vibration assembly to enable the ejector plate to vibrate to eject materials, and the electromagnetic vibration assembly comprises an ejector rod connected to the bottom of the female die plate in a penetrating mode. According to the refrigerator drawer injection molding device easy to demold, vibration force is formed through cooperation of the electromagnet and the electromagnetic vibration assembly, the adhesive force between a refrigerator drawer injection molding part and the mold can be effectively destroyed, the refrigerator drawer injection molding part can be separated from the mold more easily, demolding is convenient, the demolding time is greatly shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to an injection molding device for a refrigerator drawer which is easy to demould. Background Art

[0002] Injection molding is a method of producing industrial products. It is mainly to inject molten plastic into the plastic product mold under pressure and cool it to get the desired plastic parts. It usually uses two materials: rubber injection molding and plastic injection molding. The injection molding process includes injection, pressure holding, material storage, ejection, cooling and mold opening. In the production process of refrigerator drawers, injection molding is mainly used.

[0003] After the refrigerator drawer is injection molded and cooled by an injection molding device, it is ejected and demolded by a ejector pin on the injection molding device. Since there is adhesion between the refrigerator drawer and the mold after cooling and molding, the straight up and down ejector pin is not easy to destroy the adhesion between the refrigerator drawer injection molded part and the mold during demolding, which makes demolding inconvenient and easily causes the refrigerator drawer injection molded part to be broken and damaged. Therefore, an injection molding device for a refrigerator drawer that is easy to demold is now proposed. Utility Model Content

[0004] The utility model aims to solve the problem that the existing refrigerator drawer injection molding device is difficult to demould when in use, and proposes a refrigerator drawer injection molding device which is easy to demould.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technology: a refrigerator drawer injection molding device which is easy to demold, comprising a convex mold plate arranged through an upper fixed plate, and a concave mold plate arranged through a lower fixed plate, a cavity is formed between the convex mold of the convex mold plate and the concave mold of the concave mold plate, an injection molding gate connected to the cavity is arranged at the middle position of the upper fixed plate, an electromagnet is arranged on the lower fixed plate, an electromagnetic vibration component matched with the electromagnet is arranged on the concave mold plate, a ejection plate is arranged at the bottom of the cavity in the concave mold plate, and the electromagnet cooperates with the electromagnetic vibration component to make the ejection plate vibrate for ejecting material.

[0006] As a further description of the above technical solution: the electromagnetic vibration component includes a push rod connected to the bottom of the concave template, the lower end of the push rod is provided with a magnetic plate through a fixing box, and a spring is sleeved on the push rod at a position between the concave template and the fixing box.

[0007] As a further description of the above technical solution: a threaded joint is arranged at the upper end of the ejector rod, and a mounting hole matching the threaded joint is opened on the lower side of the ejector plate.

[0008] As a further description of the above technical solution: the upper side of the ejector plate is covered with a pad through an insulation plate, and the upper side of the pad is flush with the bottom of the cavity.

[0009] As a further description of the above technical solution: the electromagnet is detachably mounted on the lower fixed plate through a mounting seat, a connecting wire is arranged on the electromagnet, and a slot for the connecting wire to pass through is opened on the mounting seat, and a plurality of mounting plates are arranged on the mounting seat.

[0010] As a further description of the above technical solution: the concave mold plate is fixed on the lower fixed plate through a pair of spacer plates.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0012] The electromagnet and the electromagnetic vibration assembly cooperate to form a vibration force, which causes the top plate to vibrate after the refrigerator drawer injection molded parts are cooled and formed, thereby effectively destroying the adhesion between the refrigerator drawer injection molded parts and the mold, making it easier to separate the refrigerator drawer injection molded parts from the mold, facilitating demoulding, greatly shortening the demoulding time, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The overall structure schematic diagram provided according to the embodiment of the utility model is shown;

[0014] Figure 2 A partial structural schematic diagram according to an embodiment of the utility model is shown;

[0015] Figure 3 A schematic diagram of the structure of an electromagnetic vibration assembly provided according to an embodiment of the utility model is shown;

[0016] Figure 4 A schematic diagram of the structure of a top material plate provided according to an embodiment of the utility model is shown;

[0017] Figure 5 A schematic structural diagram of an electromagnet provided according to an embodiment of the utility model is shown.

[0018] Legend:

[0019] 1. Upper fixed plate; 2. Convex plate; 3. Lower fixed plate; 4. Spacer plate; 5. Concave plate; 6. Cavity; 7. Electromagnet; 71. Connecting wire; 72. Mounting seat; 73. Notch; 74. Mounting plate; 8. Electromagnetic vibration assembly; 81. Ejector rod; 82. Fixing box; 83. Magnetic plate; 84. Spring; 85. Threaded joint; 9. Ejector plate; 91. Heat insulation board; 92. Pad; 93. Mounting hole; 10. Injection gate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Reference Figure 1-Figure 5 The present embodiment provides an easy-to-demold refrigerator drawer injection molding device, comprising a convex mold plate 2 arranged through an upper fixed plate 1, and a concave mold plate 5 arranged through a lower fixed plate 3, a cavity 6 is formed between the convex mold of the convex mold plate 2 and the concave mold of the concave mold plate 5, an injection molding gate 10 connected to the cavity 6 is arranged at the middle position of the upper fixed plate 1, an electromagnet 7 is arranged on the lower fixed plate 3, an electromagnetic vibration component 8 matched with the electromagnet 7 is arranged on the concave mold plate 5, a ejector plate 9 is arranged at the bottom of the cavity 6 in the concave mold plate 5, and the electromagnet 7 cooperates with the electromagnetic vibration component 8 to make the ejector plate 9 vibrate to eject the material.

[0022] In the utility model, the plastic solution of the refrigerator drawer is injected through the injection molding gate 10, and the demolding work is carried out after the plastic solution enters the cavity 6 for cooling and forming. The demolding method is: the convex mold plate 2 on the upper fixed plate 1 is separated from the concave mold plate 5 on the lower fixed plate 3, the electromagnet 7 is turned on and then closed, and the opening time of the electromagnet 7 is controlled according to the demolding needs. The electromagnetic vibration component 8 on the concave mold plate 5 that matches the electromagnet 7 generates a vibration force, and the vibration force is transmitted to the ejector plate 9 connected to the electromagnetic vibration component 8, so that the ejector plate 9 also vibrates. The vibrating ejector plate 9 effectively destroys the adhesion between the refrigerator drawer injection molded part and the mold, so that the refrigerator drawer injection molded part is easier to separate from the mold, which is convenient for demolding and greatly shortens the demolding time.

[0023] Specifically, refer to Figure 2 and Figure 3 The electromagnetic vibration assembly 8 includes a push rod 81 that penetrates and connects to the bottom of the concave mold plate 5. The lower end of the push rod 81 is provided with a magnetic plate 83 through a fixing box 82. A spring 84 is sleeved on the push rod 81 at a position between the concave mold plate 5 and the fixing box 82. The magnetic plate 83 has an opposite polarity to the electromagnet 7. After the electromagnet 7 is turned on, the magnetic plate 83 is pushed upward, thereby squeezing the spring 84 and causing the push rod 81 to move upward on the concave mold plate 5. Then the electromagnet 7 is turned off, and the spring 84 is reset. Under the action of the elastic potential energy of the spring 84, the push rod 81 continuously moves up and down, thereby driving the ejector plate 9 to vibrate and generating the vibration force required for demolding.

[0024] Specifically, refer to Figure 2-Figure 4The upper end of the ejector rod 81 is provided with a threaded joint 85, and the lower side of the ejector plate 9 is provided with a mounting hole 93 matching the threaded joint 85. The ejector rod 81 of the electromagnetic vibration assembly 8 is screwed to the lower side of the ejector plate 9 through the threaded joint 85 and the mounting hole 93, so that the ejector rod 81 and the ejector plate 9 can be easily connected and disassembled. When the injection molding device is used, the electromagnetic vibration assembly 8 can be disassembled and repaired conveniently and quickly.

[0025] Specifically, refer to Figure 2 and Figure 4 The upper side of the ejector plate 9 is covered with a pad 92 through a heat insulating plate 91, and the upper side of the pad 92 is flush with the bottom of the cavity 6. During the injection molding process, the temperature of the mold will rise when the plastic solution is injected. The excessively high temperature transferred to the ejector pin 81 may cause the ejector pin 81 to expand and get stuck, or even break. The heat insulating plate 91 is used for heat insulation to prevent the high temperature during injection from being transferred to the ejector pin 81, thereby improving the safety of the ejector pin 81. The pad 92 is made of the same material as the ejector plate 9. It is used for ejection on one hand, and for clamping and fixing the heat insulating plate 91 on the other hand.

[0026] Specifically, refer to Figure 1 and Figure 5 The electromagnet 7 is detachably mounted on the lower fixing plate 3 through the mounting seat 72. The electromagnet 7 is provided with a connecting wire 71, and the mounting seat 72 is provided with a notch 73 for the connecting wire 71 to pass through. The mounting seat 72 is provided with a plurality of mounting plates 74. The electromagnet 7 is installed and fixed by the mounting seat 72. The mounting seat 72 can protect the electromagnet 7 to prevent the electromagnet 7 from being damaged by collision during daily use. When the electromagnet 7 is pressed into the mounting seat 72, the connecting wire 71 is linearly stuck in the notch 73 to prevent the mounting seat 72 from crushing the connecting wire 71, and at the same time facilitate the connection between the electromagnet 7 and the external power supply.

[0027] Specifically, refer to Figure 1 The concave plate 5 is fixed on the lower fixed plate 3 through a pair of spacer plates 4. A space for installing the power supply magnet 7 and the electromagnetic vibration component 8 is formed between the lower fixed plate 3 and the concave plate 5 through a pair of spacer plates 4, ensuring that the electromagnetic vibration component 8 has downward vibration space.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An injection molding device for a refrigerator drawer that is easy to demould, comprising a male mold plate (2) arranged by an upper fixed plate (1), and a female mold plate (5) arranged by a lower fixed plate (3), a mold cavity (6) being formed between the male mold of the male mold plate (2) and the female mold of the female mold plate (5), and an injection molding gate (10) connected to the mold cavity (6) being arranged in the middle of the upper fixed plate (1), characterized in that: The lower fixed plate (3) is provided with an electromagnet (7), the concave mold plate (5) is provided with an electromagnetic vibration component (8) that cooperates with the electromagnet (7), and a ejector plate (9) is provided at a position located at the bottom of the cavity (6) in the concave mold plate (5), and the electromagnet (7) cooperates with the electromagnetic vibration component (8) to cause the ejector plate (9) to vibrate to eject the material.

2. The easy-to-demold refrigerator drawer injection molding device according to claim 1, characterized in that: The electromagnetic vibration assembly (8) comprises a push rod (81) penetrating and connected to the bottom of the concave mold plate (5); a magnetic plate (83) is provided at the lower end of the push rod (81) via a fixing box (82); and a spring (84) is sleeved on the push rod (81) at a position between the concave mold plate (5) and the fixing box (82).

3. The easy-to-demold refrigerator drawer injection molding device according to claim 2, characterized in that: A threaded joint (85) is provided at the upper end of the ejector rod (81), and a mounting hole (93) matching the threaded joint (85) is provided on the lower side of the ejector plate (9).

4. The easy-to-demold refrigerator drawer injection molding device according to claim 3, characterized in that: The upper side of the ejector plate (9) is covered with a pad (92) via a heat insulation plate (91), and the upper side of the pad (92) is flush with the bottom of the cavity (6).

5. The easy-to-demold refrigerator drawer injection molding device according to claim 1, characterized in that: The electromagnet (7) is detachably mounted on the lower fixing plate (3) via a mounting seat (72); a connecting wire (71) is provided on the electromagnet (7), and a slot (73) is provided on the mounting seat (72) for the connecting wire (71) to pass through; and a plurality of mounting plates (74) are provided on the mounting seat (72).

6. The easy-to-demold refrigerator drawer injection molding device according to claim 1, characterized in that: The concave mold plate (5) is fixed on the lower fixed plate (3) via a pair of spacer plates (4).

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