Refrigerator door shelf injection mold with traceless ejection function

Abstract

The utility model relates to injection mold technical field, concretely relates to a refrigerator door shelf injection mold with trace ejection function, including base, the top of base is provided with cooling cylinder and transfusion pump, the inside of cooling cylinder is provided with a plurality of injection cylinder, the inside of injection cylinder is provided with symmetrical telescopic link, the telescopic end of telescopic link is provided with the ejection block for ejecting injection part, the outer wall of injection cylinder is provided with the fairing, the inside of fairing is provided with the cooling assembly for cooling mould, the inside of cooling cylinder is provided with the drive assembly for driving ejection block movement, through starting transfusion pump, the cooling liquid in the inside of cooling cylinder is transported to the inside of annular pipe through spiral pipe, liquid outlet pipe and connecting pipe, then the cooling liquid is sprayed by the nozzle in the inside of annular pipe, utilize flowing cooling liquid to can cool injection part quickly, prevent the damage when ejecting injection part.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold for a refrigerator door shelf with a non-marking ejection function. Background Technology

[0002] A refrigerator door shelf is a frame installed on the refrigerator door for storing items. Refrigerator door shelves are usually made of transparent plastic and can be manufactured quickly and in large quantities using injection molding.

[0003] Chinese Patent Publication No. CN218505087U discloses an injection mold for a refrigerator door shelf with a seamless ejection function. The mold includes: side mold bases symmetrically nested on the left and right sides of a bottom mold base, with a movable mold base fitted onto the top of the side mold bases; a fixed mold base symmetrically connected to the upper end of the bottom mold base, forming an integrated structure; a limiting mold base fitted between the side mold bases, with two limiting mold bases symmetrically arranged about the front and rear of the bottom mold base; and a movable mold base engaged between the movable mold bases, with its bottom fitted into the center of the upper surface of the bottom mold base. This refrigerator door shelf injection mold with a seamless ejection function effectively reduces parting lines on the product, making the shelf injection molded part more aesthetically pleasing. Furthermore, the air-jet ejection method reduces the likelihood of breakage in the shelf injection molded part and effectively reduces mold production costs.

[0004] The aforementioned device uses air jets to eject the molded parts. However, the mold is still warm after injection molding. If air jets are used to blow on the mold after injection molding, it can easily cause changes in the shape of the mold, thereby affecting the production quality of the mold. Utility Model Content

[0005] To address the aforementioned issues, a refrigerator door shelf injection mold with a non-marking ejection function is provided. By activating the liquid pump, the coolant inside the cooling cylinder is transported through a spiral tube, an outlet tube, and a connecting tube to the inside of the annular tube. The coolant is then sprayed out by a nozzle inside the annular tube. The flowing coolant can quickly cool the injection molded part, preventing damage during ejection.

[0006] To address the problems of existing technologies, this utility model provides a refrigerator door shelf injection mold with a non-marking ejection function, including a base. A cooling cylinder and an infusion pump are provided on the top of the base. Multiple injection cylinders are provided inside the cooling cylinder. Symmetrical telescopic rods are provided inside the injection cylinders. An ejection block for ejecting the injection molded part is provided at the telescopic end of the telescopic rod. A flow guide is provided on the outer wall of the injection cylinder. A cooling component for cooling the injection molded part is provided inside the flow guide. A driving component for moving the ejection block is provided inside the cooling cylinder.

[0007] Preferably, the cooling assembly includes an annular tube disposed inside the flow guide, with a nozzle for spraying coolant connected to the outside of the annular tube, a liquid outlet pipe disposed outside the cooling cylinder, and a connecting pipe connected inside the liquid outlet pipe, one end of the connecting pipe being connected to the inside of the annular tube.

[0008] Preferably, the infusion pump has a spiral tube connected to its input end, one end of which is connected to the interior of the cooling cylinder, and an infusion tube connected to its output end, one end of which is connected to the interior of the outlet tube.

[0009] Preferably, the outer wall of the cooling cylinder is provided with a semiconductor refrigeration plate for cooling the coolant.

[0010] Preferably, the drive assembly includes a transmission cylinder disposed inside the cooling cylinder, an air inlet pipe connected to the side wall of the transmission cylinder, one end of the air inlet pipe being connected to an external air pump, a connector connected inside the transmission cylinder, an air jet pipe connected inside the connector, and one end of the air jet pipe extending into the interior of the injection molding cylinder.

[0011] Preferably, the transmission cylinder is provided with rotating blades inside, and both ends of the rotating blades are provided with stirring rods for stirring the coolant.

[0012] The advantages of this utility model compared to the prior art are:

[0013] 1. By starting the infusion pump, the coolant inside the cooling cylinder is transported through the spiral tube, the outlet tube and the connecting tube to the inside of the annular tube. The coolant is then sprayed out by the nozzle inside the annular tube. The flowing coolant can quickly cool the injection molded part and prevent damage when the injection molded part is ejected.

[0014] 2. The gas is transported through the air inlet pipe, transmission cylinder and connector to the inside of the jet pipe by the air pump, and then sprayed out from the inside of the injection cylinder by the jet pipe, which squeezes the ejector block to move upward. The flexible extrusion of the gas allows the cooled injection molded part to be ejected without leaving marks.

[0015] 3. The rotating blade drives the stirring rod to rotate, thereby dissipating heat from the flowing coolant and preventing the coolant temperature from rising during flow, which would prevent it from cooling the mold. At the same time, the semiconductor cooling plate and heat dissipation holes on the outer wall of the cooling cylinder can further dissipate heat from the coolant, ensuring the cooling efficiency of the coolant. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an injection mold for a refrigerator door shelf with a non-marking ejection function.

[0017] Figure 2 This is a schematic diagram of the internal structure of the cooling cylinder in an injection mold for a refrigerator door shelf with a non-marking ejection function.

[0018] Figure 3 This is a schematic diagram of the structure of some components in an injection mold for a refrigerator door shelf with a non-marking ejection function.

[0019] Figure 4 This is a schematic diagram of the cooling component in an injection mold for a refrigerator door shelf with a non-marking ejection function.

[0020] Figure 5 This is a schematic diagram of the drive component in an injection mold for a refrigerator door shelf with a non-marking ejection function.

[0021] Figure 6 This is a schematic diagram of the rotating blade structure in an injection mold for a refrigerator door shelf with a non-marking ejection function.

[0022] The following are the labels in the diagram: 1. Base; 2. Infusion pump; 3. Infusion tube; 4. Spiral tube; 5. Semiconductor cooling plate; 6. Infusion tube; 7. Cooling cylinder; 8. Air inlet pipe; 9. Flow guide; 10. Jet nozzle; 11. Connecting pipe; 12. Injection cylinder; 13. Annular tube; 14. Nozzle; 15. Ejector block; 16. Telescopic rod; 17. Connector; 18. Stirring rod; 19. Transmission cylinder; 20. Rotating blade. Detailed Implementation

[0023] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 6 As shown, this utility model provides:

[0025] A refrigerator door shelf injection mold with a non-marking ejection function includes a base 1. A cooling cylinder 7 and an infusion pump 2 are provided on the top of the base 1. Multiple injection cylinders 12 are provided inside the cooling cylinder 7. Symmetrical telescopic rods 16 are provided inside the injection cylinders 12. The telescopic ends of the telescopic rods 16 are provided with ejection blocks 15 for ejecting the injection molded parts. A flow guide shroud 9 is provided on the outer wall of the injection cylinder 12. A cooling component for cooling the injection molded parts is provided inside the flow guide shroud 9. A driving component for driving the ejection blocks 15 to move is provided inside the cooling cylinder 7.

[0026] By feeding the raw material into the injection cylinder 12 and then waiting for injection molding, the molded part has a certain temperature. At this time, the cooling component is used to cool the molded part to prevent damage during ejection. Then, the drive component is used to move the ejector block 15 to perform a markless ejection of the mold.

[0027] like Figure 5 As shown, the cooling assembly includes an annular tube 13 disposed inside the flow guide shroud 9. A nozzle 14 for spraying coolant is connected to the outside of the annular tube 13. An outlet pipe 6 is disposed outside the cooling cylinder 7. A connecting pipe 11 is connected inside the outlet pipe 6. One end of the connecting pipe 11 is connected to the inside of the annular tube 13.

[0028] Coolant is sprayed out through the nozzle 14 inside the annular tube 13, and the flowing coolant can quickly cool the injection molded part.

[0029] like Figure 4 and Figure 5 As shown, the input end of the infusion pump 2 is connected to the spiral tube 4, one end of the spiral tube 4 is connected to the inside of the cooling cylinder 7, and the output end of the infusion pump 2 is connected to the infusion tube 3, one end of the infusion tube 3 is connected to the inside of the outlet tube 6.

[0030] The coolant inside the cooling cylinder 7 is transported through the spiral tube 4, the outlet tube 6 and the connecting tube 11 to the inside of the annular tube 13 by the infusion pump 2, thereby achieving the purpose of recycling the coolant.

[0031] like Figure 2 As shown, the outer wall of the cooling cylinder 7 is provided with a semiconductor refrigeration plate 5 for cooling the coolant.

[0032] The semiconductor cooling plate 5 and heat dissipation holes on the outer wall of the cooling cylinder 7 can further dissipate heat from the coolant, ensuring the cooling efficiency of the coolant.

[0033] like Figure 4 and Figure 5As shown, the drive assembly includes a transmission cylinder 19 disposed inside the cooling cylinder 7. An air inlet pipe 8 is connected to the side wall of the transmission cylinder 19. One end of the air inlet pipe 8 is connected to an external air pump. A connector 17 is also connected inside the transmission cylinder 19. An air jet pipe 10 is connected inside the connector 17. One end of the air jet pipe 10 extends into the interior of the injection molding cylinder 12.

[0034] An external air pump transports gas through the air inlet pipe 8, transmission cylinder 19 and connector 17 to the inside of the jet pipe 10, and then the gas is ejected from the inside of the injection cylinder 12 through the jet pipe 10, which squeezes the ejector block 15 to move upward. The flexible extrusion of the gas allows the cooled injection molded part to be ejected without leaving any marks.

[0035] like Figure 5 and Figure 6 As shown, a rotating blade 20 is rotatably mounted inside the transmission cylinder 19, and both ends of the rotating blade 20 are equipped with stirring rods 18 for stirring the coolant.

[0036] When the gas passes through the transmission cylinder 19, it drives the rotating blade 20 inside to rotate, and the stirring rods 18 at both ends of the rotating blade 20 also rotate accordingly, thereby dissipating heat from the flowing coolant and preventing the coolant from rising in temperature during flow, thus failing to cool the injection molded part.

[0037] Working principle: When injection molding is needed, the raw material is fed into the injection cylinder 12, and then injection molding is waited for. The molded part has a certain temperature. At this time, the liquid pump 2 is started to transport the coolant inside the cooling cylinder 7 through the spiral tube 4, the outlet tube 6 and the connecting tube 11 to the inside of the annular tube 13. Then, the coolant is sprayed out by the nozzle 14 inside the annular tube 13. The flowing coolant can quickly cool the injection part and prevent damage when the injection part is ejected. After the injection part is cooled, the external air pump is started to transport the air through the air inlet tube 8, the transmission cylinder 19 and the connector 17 to the spray nozzle. Inside the air pipe 10, the gas is then ejected from the injection cylinder 12 through the jet pipe 10, causing the ejector block 15 to move upward. The flexible extrusion of the gas allows the cooled injection molded part to be ejected without leaving a mark. When the gas passes through the transmission cylinder 19, it drives the rotating blade 20 inside to rotate, and the stirring rods 18 at both ends of the rotating blade 20 also rotate accordingly, thereby dissipating heat from the flowing coolant and preventing the coolant from overheating and failing to cool the injection molded part. At the same time, the semiconductor cooling plate 5 and heat dissipation holes on the outer wall of the cooling cylinder 7 can further dissipate heat from the coolant, ensuring the cooling efficiency of the coolant.

[0038] The above embodiments merely illustrate one type of injection mold for a refrigerator door shelf with a non-marking ejection function, or several implementation methods of this utility model. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

[0039] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A refrigerator door shelf injection mold with a non-marking ejection function, characterized in that, The device includes a base (1), a cooling cylinder (7) and an infusion pump (2) on the top of the base (1). The cooling cylinder (7) contains a plurality of injection cylinders (12). The injection cylinders (12) contain symmetrical telescopic rods (16). The telescopic ends of the telescopic rods (16) contain ejector blocks (15) for ejecting the injection molded parts. The outer wall of the injection cylinders (12) contains a flow guide (9). The flow guide (9) contains a cooling assembly for cooling the injection molded parts. The cooling cylinder (7) contains a driving assembly for driving the ejector blocks (15) to move.

2. The refrigerator door shelf injection mold with a non-marking ejection function according to claim 1, characterized in that, The cooling assembly includes an annular tube (13) disposed inside the flow guide (9), and a nozzle (14) for spraying coolant is connected to the outside of the annular tube (13). An outlet pipe (6) is disposed outside the cooling cylinder (7), and a connecting pipe (11) is connected inside the outlet pipe (6). One end of the connecting pipe (11) is connected to the inside of the annular tube (13).

3. The refrigerator door shelf injection mold with a non-marking ejection function according to claim 1, characterized in that, The infusion pump (2) has a spiral tube (4) connected to its input end. One end of the spiral tube (4) is connected to the interior of the cooling cylinder (7). The infusion pump (2) has an infusion tube (3) connected to its output end. One end of the infusion tube (3) is connected to the interior of the outlet tube (6).

4. The refrigerator door shelf injection mold with a non-marking ejection function according to claim 1, characterized in that, The outer wall of the cooling cylinder (7) is provided with a semiconductor cooling plate (5) for cooling the coolant.

5. The refrigerator door shelf injection mold with a non-marking ejection function according to claim 1, characterized in that, The drive assembly includes a transmission cylinder (19) disposed inside the cooling cylinder (7). An air inlet pipe (8) is connected to the side wall of the transmission cylinder (19). One end of the air inlet pipe (8) is connected to an external air pump. A connector (17) is also connected inside the transmission cylinder (19). An air jet pipe (10) is connected inside the connector (17). One end of the air jet pipe (10) extends into the interior of the injection molding cylinder (12).

6. The refrigerator door shelf injection mold with a non-marking ejection function according to claim 5, characterized in that, The transmission cylinder (19) is equipped with a rotating blade (20) inside, and both ends of the rotating blade (20) are equipped with stirring rods (18) for stirring the coolant.

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