Refrigerator plastic grating injection mold

Abstract

The refrigerator plastic grating injection mold comprises a bottom mold, a top mold is connected to the outer wall of the top of the bottom mold in a clamped mode, cavities are formed in the outer walls of one sides of the top mold and the bottom mold, installation areas are formed in the outer walls of the two sides of the top of the bottom mold, and air bag sleeves are installed on one sides of the bottoms of the inner walls of the installation areas through bolts. Connecting springs are installed between the two sides of the inner wall of the airbag sleeve through bolts, and a magnetic attraction block is installed on the outer wall of one side of the top of the airbag sleeve through bolts. When the top die is separated from the bottom die, the magnet block is separated from the magnetic attraction block, and then the air bag sleeve retracts under the action of the connecting spring, so that air in the air bag sleeve flows into the air cylinder element through the pipeline, the output end of the air cylinder element is lifted, the top plate jacks the grating in the cavity, and the grating in the cavity is lifted; the grilles can be conveniently taken by workers, the difficulty of taking the grilles from the bottom die is reduced, assistance of electrical equipment is not needed in the process, and the cost of the die is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic grille production, in particular to an injection mold for a refrigerator plastic grille. Background Art

[0002] The refrigerator plastic grille is a kind of refrigerator accessory, generally including a frame and a plurality of grille bars arranged in the frame. The processing of the refrigerator plastic grille generally adopts an injection mold, and the injection mold is a tool that is matched with a plastic molding machine in the plastic processing industry and gives plastic products a complete configuration and precise dimensions.

[0003] For example, a mold for processing a refrigerator plastic grille with the application number CN201922476268.3 and the authorization announcement date of September 22, 2020, includes a base. Four corners of the upper end of the base are fixedly installed with hydraulic cylinders. The output ends of the hydraulic cylinders are movably installed with lifting rods. The upper ends of the lifting rods are fixedly installed with a movable template together. The middle part of the upper end of the movable template is fixedly installed with an injection mold. The upper end of the injection mold is movably installed with a fixed template. Positioning devices are fixedly installed between the movable template and the fixed template. Four corners of the upper end of the fixed template are fixedly installed with cushion blocks. Four corners of the upper ends of the cushion blocks are fixedly installed with an upper plate together. For the mold for processing a refrigerator plastic grille of the present utility model, the guide posts are used to guide the fixed template and the movable template during the fitting process to ensure the smooth progress of the fitting, and the sealing ring and the gasket can avoid the generation of bubbles; the setting of the support insert block and the elastic stop block can avoid over-compaction and the outflow of hot plastic, which affects the molding of the grille.

[0004] After the plastic grille is demolded during injection molding, it will remain in the mold. When taking the material, workers need to reach into the mold to manually take it out. Since the grille is relatively large, it is difficult to take it. Therefore, it is urgent to design an injection mold for a refrigerator plastic grille to solve the above problems. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide an injection mold for a refrigerator plastic grille to solve the above deficiencies in the prior art.

[0006] In order to achieve the above purpose, the present utility model provides the following technical solutions:

[0007] A plastic grille injection mold for a refrigerator, comprising a bottom mold, a top mold is clamped on the outer wall of the top of the bottom mold, and cavities are provided on the outer walls of one side of the top mold and the bottom mold. Installation areas are provided on the outer walls of both sides of the top of the bottom mold, and an airbag sleeve is installed at one side of the inner wall bottom of the installation area through bolts. A connecting spring is installed between the two sides of the inner wall of the airbag sleeve through bolts. A magnetic attraction block is installed on the outer wall of one side of the top of the airbag sleeve through bolts. Magnetic blocks are installed on the outer walls of both sides of the bottom of the top mold through bolts, and the magnetic blocks are in contact with the magnetic attraction blocks. A groove is provided on the outer wall of one side of the bottom of the bottom mold, and a cylinder element is installed at one side of the inner wall top of the groove through bolts. The bottom end of the cylinder element is connected to the two airbag sleeves through a pipeline. The output end of the cylinder element is installed with a top plate through bolts, and the top plate is located inside one of the cavities.

[0008] Further, cooling cavities are provided inside both the bottom mold and the top mold. Water pipes are inserted into the outer walls of both sides of the bottom mold and the top mold, and one end of the water pipe extends into the cooling cavity. Brackets are installed on the outer walls of both sides of the top of the bottom mold through bolts, and a hydraulic cylinder is installed at the center of the outer wall of one side of the top of the bracket through bolts.

[0009] Further, an installation opening is provided at the center of the top of the top mold, and a feeding assembly is installed inside the installation opening through bolts. The top end of the feeding assembly is fixedly connected to the output end of the hydraulic cylinder through bolts.

[0010] Further, the feeding assembly includes an installation seat. A sleeve is installed at the center of one side of the inner wall top of the installation seat through bolts, and a square rod is slidably inserted into the sleeve.

[0011] Further, a substrate is integrally formed at the bottom end of the square rod, and discharge valves are provided on the outer walls of both sides of the bottom of the substrate. A telescopic sleeve is installed between the outer wall of the top of the substrate and the bottom end of the sleeve through bolts, and the square rod is located inside the telescopic sleeve.

[0012] Further, a connecting cylinder is installed at the top of the installation seat through bolts, and a screw motor is installed inside the connecting cylinder through bolts. The output end of the screw motor is in threaded connection with the square rod. Connecting valve pipes are inserted into the outer walls of both sides of the installation seat, and one ends of the two connecting valve pipes are connected to one ends of the two discharge valves through pipelines.

[0013] Further, storage bins are installed on the outer walls of both sides of the top of the bracket through bolts. One end of the connecting valve pipe extends into the storage bin. A liquid level sensor is installed on the outer wall of one side of the top of the storage bin through bolts. A box door is provided on the outer wall of one side of the top of the storage bin. A driving motor is installed at the center of the top of the storage bin through bolts, and the output end of the driving motor is installed with a screw shaft through a coupling.

[0014] In the above technical solution, a plastic grille injection mold for a refrigerator provided by the present utility model has the following beneficial effects:

[0015] (1) Through the arranged magnet block, magnetic attraction block, connecting spring, airbag sleeve and cylinder element, when the top mold disengages from the bottom mold, the magnet block will disengage from the magnetic attraction block, and then under the action of the connecting spring, the airbag sleeve will retract, causing the air inside the airbag sleeve to flow into the cylinder element through the pipeline. The output end of the cylinder element will rise, causing the top plate to lift the grille inside the cavity, so that the grille inside the cavity rises, facilitating the worker to take the grille, reducing the difficulty of taking the grille from the bottom mold, and moreover, this process does not require the assistance of power equipment, reducing the cost of this mold.

[0016] (2) Through the arranged feeding assembly, when using this equipment for injection molding, the lead screw motor will start, causing the square rod to slide inside the sleeve, causing the position of the substrate to drop. Then the substrate will fall on the bottom of the cavity of the bottom mold. Subsequently, continue to operate the lead screw motor, causing the substrate to slowly move upward with the discharge valve, so that the discharge valve can evenly spray the release agent inside the cavity, or evenly spray the injection molding material inside the cavity, improving the practicability of this equipment.

[0017] (3) Through the arranged drive motor and auger shaft, when the drive motor starts, it will cause the auger shaft to rotate, causing the material inside the storage bin to surge up and down, preventing problems such as precipitation and solidification of the material inside the storage bin. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of a plastic grille injection mold for a refrigerator of the present utility model.

[0020] Figure 2 It is a schematic diagram of the planar structure of the bottom mold and the top mold provided by an embodiment of a plastic grille injection mold for a refrigerator of the present utility model.

[0021] Figure 3 It is a cross-sectional view of the side view structure of the bottom mold and the top mold provided by an embodiment of a plastic grille injection mold for a refrigerator of the present utility model.

[0022] Figure 4 It is a schematic diagram of the structure of the feeding assembly provided by an embodiment of a plastic grille injection mold for a refrigerator of the present utility model.

[0023] Figure 5Schematic diagram of the internal structure of the material storage tank provided by an embodiment of an injection mold for a plastic grille of a refrigerator according to the present utility model.

[0024] Description of the reference numerals:

[0025] 1. Bottom mold; 2. Top mold; 3. Bracket; 4. Material storage tank; 5. Hydraulic cylinder; 6. Groove; 7. Cooling cavity; 8. Water delivery pipe; 9. Cylinder element; 10. Cavity; 11. Top plate; 12. Installation opening; 13. Feeding assembly; 14. Mounting seat; 15. Connecting cylinder; 16. Screw motor; 17. Sleeve; 18. Square rod; 19. Telescopic sleeve; 20. Substrate; 21. Discharge valve; 22. Connecting valve pipe; 23. Installation area; 24. Magnet block; 25. Airbag sleeve; 26. Connecting spring; 27. Magnetic attraction block; 28. Liquid level sensor; 29. Driving motor; 30. Auger shaft; 31. Cabinet door. Detailed implementation manners

[0026] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below with reference to the accompanying drawings.

[0027] As Figures 1-5 shown, an injection mold for a plastic grille of a refrigerator provided by an embodiment of the present utility model includes a bottom mold 1, a top mold 2 is clamped on the outer wall of the top of the bottom mold 1, and cavities 10 are provided on the outer walls of one side of the top mold 2 and the bottom mold 1. Installation areas 23 are provided on the outer walls of both sides of the top of the bottom mold 1. One side of the inner wall bottom of the installation area 23 is bolted with an airbag sleeve 25. A connecting spring 26 is bolted between the two sides of the inner wall of the airbag sleeve 25. One side of the outer wall of the top of the airbag sleeve 25 is bolted with a magnetic attraction block 27. Magnet blocks 24 are bolted on the outer walls of both sides of the bottom of the top mold 2, and the magnet blocks 24 are in contact with the magnetic attraction blocks 27. A groove 6 is provided on one side of the outer wall of the bottom of the bottom mold 1, and a cylinder element 9 is bolted on one side of the inner wall top of the groove 6. The bottom end of the cylinder element 9 is connected to the two airbag sleeves 25 through a pipeline. The output end of the cylinder element 9 is bolted with a top plate 11, and the top plate 11 is located inside one of the cavities 10.

[0028] Specifically, in this embodiment, it includes a bottom mold 1. A top mold 2 is clamped on the outer wall of the top of the bottom mold 1. Cavities 10 are provided on the outer walls of one side of the top mold 2 and the bottom mold 1. Installation areas 23 are provided on the outer walls of both sides at the top of the bottom mold 1. An airbag sleeve 25 is installed at one side of the inner wall bottom of the installation area 23 by bolts. A connecting spring 26 is installed between the two sides of the inner wall of the airbag sleeve 25 by bolts. A magnetic attraction block 27 is installed at one side of the top outer wall of the airbag sleeve 25 by bolts. Magnetic blocks 24 are installed at both sides of the bottom outer wall of the top mold 2 by bolts. The magnetic blocks 24 are in contact with the magnetic attraction block 27. A groove 6 is provided on the outer wall of one side at the bottom of the bottom mold 1. A cylinder element 9 is installed at one side of the inner wall top of the groove 6 by bolts. When the position of the top mold 2 drops, then the top mold 2 will be clamped on the bottom mold 1. Subsequently, the magnetic blocks 24 will be inserted into the installation area 23. Then, under the action of the opposite-sex attraction of magnetism, the magnetic blocks 24 will attract the magnetic attraction block 27, causing the airbag sleeve 25 to be stretched open, causing the air inside the cylinder element 9 to be pumped out, causing the output end of the cylinder element 9 to retract. Then, the top plate 11 will fall on the bottom of the cavity 10 on the bottom mold 1. The bottom end of the cylinder element 9 is connected to the two airbag sleeves 25 through a pipeline. The output end of the cylinder element 9 is installed with a top plate 11 by bolts. When demolding after molding is completed, as the top mold 2 rises, the magnetic blocks 24 will separate from the magnetic attraction block 27. Then, under the action of the connecting spring 26, the airbag sleeve 25 will retract, causing the air inside the airbag sleeve 25 to flow into the cylinder element 9 through the pipeline. The output end of the cylinder element 9 will rise, causing the top plate 11 to lift the grille inside the cavity 10, causing the grille inside the cavity 10 to rise, facilitating the worker to take the grille and reducing the difficulty of taking the grille from the bottom mold 1. And the top plate 11 is located inside one of the cavities 10.

[0029] In a refrigerator plastic grille injection mold provided by the present utility model, when the top mold 2 separates from the bottom mold 1, the magnetic blocks 24 will separate from the magnetic attraction block 27. Then, under the action of the connecting spring 26, the airbag sleeve 25 will retract, causing the air inside the airbag sleeve 25 to flow into the cylinder element 9 through the pipeline. The output end of the cylinder element 9 will rise, causing the top plate 11 to lift the grille inside the cavity 10, causing the grille inside the cavity 10 to rise, facilitating the worker to take the grille and reducing the difficulty of taking the grille from the bottom mold 1.

[0030] In an embodiment provided by the present utility model, as Figures 2-3As shown, cooling cavities 7 are provided inside both the bottom die 1 and the top die 2. Water pipes 8 are inserted into the outer walls on both sides of the bottom die 1 and the top die 2. Cooling water is circulated into the cooling cavity 7 through the water pipes 8, which speeds up the molding of the injection molding material in the top die 2 and the bottom die 1. One end of the water pipe 8 extends into the cooling cavity 7. On both sides of the top outer wall of the bottom die 1, brackets 3 are installed by bolts. At the center of one side of the top outer wall of the bracket 3, a hydraulic cylinder 5 is installed by bolts. The model of the hydraulic cylinder 5 is preferably the Gaojie Automation small tie rod oil cylinder. When the hydraulic cylinder 5 is started, the feeding assembly 13 will drive the top die 2 to move, causing the top die 2 to be closed with the bottom die 1.

[0031] In another embodiment provided by the present utility model, as Figure 2 and Figure 4 shown, an installation opening 12 is provided at the center of the top of the top die 2, and a feeding assembly 13 is installed inside the installation opening 12 by bolts. The top end of the feeding assembly 13 is fixedly connected to the output end of the hydraulic cylinder 5 by bolts. The feeding assembly 13 includes an installation seat 14. At the center of one side of the inner wall top of the installation seat 14, a sleeve

[0032] 17 is installed by bolts. A square rod 18 is slidably inserted into the sleeve 17. A base plate 20 is integrally formed at the bottom end of the square rod 18. On both sides of the bottom outer wall of the base plate 20, discharge valves 21 are provided. The model of the discharge valve 21 is preferably SGH1DF02N1AC2. A telescopic sleeve 19 is installed between the top outer wall of the base plate 20 and the bottom end of the sleeve 17 by bolts. The telescopic sleeve 19 can protect the square rod 18 and prevent the square rod 18 from being damaged. The square rod 18 is located inside the telescopic sleeve 19. A connecting cylinder 15 is installed at the top end of the installation seat 14 by bolts, and a lead screw motor 16 is installed inside the connecting cylinder 15 by bolts. After the top die 2 is closed with the bottom die 1, the worker can operate the lead screw motor 16 to start, causing the square rod 18 to slide inside the sleeve 17, lowering the position of the base plate 20. Then the base plate 20 will fall on the bottom of the cavity 10 of the bottom die 1. Subsequently, one of the connecting valve pipes 22 is operated to open, so that the release agent in one of the storage tanks 4 flows into the discharge valve 21 through the connecting valve pipe 22. Subsequently, the lead screw motor 16 is continuously operated, causing the base plate 20 to slowly move upward with the discharge valve 21, so that the discharge valve 21 can evenly spray the release agent inside the cavity 10, realizing the automatic application of the release agent. After the release agent application is completed, the lead screw motor 16 can be continuously operated to cause the base plate 20 to move downward with the discharge valve 21 for a certain distance. Subsequently, the connecting valve pipe 22 of the other storage tank 4 will be opened, so that the injection molding material in the storage tank 4 flows into the two discharge valves 21, and the injection molding material flows into the cavity 10. The output end of the lead screw motor 16 is threadedly connected to the square rod 18. Connecting valve pipes 22 are inserted into the outer walls on both sides of the installation seat 14. The connecting valve pipe 22 is composed of a pipe and an electromagnetic valve. One end of the two connecting valve pipes 22 is connected to one end of the two discharge valves 21 through a pipe.

[0033] In another embodiment provided by the present utility model, as Figure 1 and Figure 5 shown, on both outer walls of the top of the bracket 3, a storage tank 4 is installed through bolts. One of the two storage tanks 4 stores injection molding materials, and the other stores demolding agent. One end of the connecting valve pipe 22 extends into the storage tank 4. On one outer wall of the top of the storage tank 4, a liquid level sensor 28 is installed through bolts. The model of the liquid level sensor 28 is preferably DYW-2M-01F. The liquid level sensor 28 can detect the liquid level inside the storage tank 4. According to the liquid level difference detected by the liquid level sensor 28, the electromagnetic valve on the connecting valve pipe 22 will open, so that the materials inside the storage tank 4 flow into the cavity 10 quantitatively. On one outer wall of the top of the storage tank 4, a box door 31 is provided. At the center of the top of the storage tank 4, a driving motor 29 is installed through bolts. The model of the driving motor 29 is preferably 57BYGH650-23, and the output end of the driving motor 29 is installed with a screw shaft 30 through a coupling. When the driving motor 29 starts, the screw shaft 30 will rotate, causing the materials inside the storage tank 4 to surge up and down, avoiding problems such as precipitation and solidification of the materials inside the storage tank 4.

[0034] Embodiment 1

[0035] A plastic grille injection mold for a refrigerator, comprising a bottom mold 1, a top mold 2 is clamped on the outer wall of the top of the bottom mold 1, and cavities 10 are provided on the outer walls of one side of the top mold 2 and the bottom mold 1. Installation areas 23 are provided on the outer walls of both sides of the top of the bottom mold 1. One side of the inner wall bottom of the installation area 23 is installed with an airbag sleeve 25 by bolts. A connecting spring 26 is installed between the two sides of the inner wall of the airbag sleeve 25 by bolts. One side of the outer wall of the top of the airbag sleeve 25 is installed with a magnetic attraction block 27 by bolts. Magnetic blocks 24 are installed on the outer walls of both sides of the bottom of the top mold 2 by bolts, and the magnetic blocks 24 are in contact with the magnetic attraction block 27. A groove 6 is provided on the outer wall of one side of the bottom of the bottom mold 1, and a cylinder element 9 is installed on one side of the inner wall top of the groove 6 by bolts. When the position of the top mold 2 drops, then the top mold 2 will be clamped on the bottom mold 1. Subsequently, the magnetic block 24 will be stuck into the installation area 23. Then, under the action of the opposite-sex attraction of magnetism, the magnetic block 24 will adsorb the magnetic attraction block 27, so that the airbag sleeve 25 is stretched open, so that the air inside the cylinder element 9 is pumped out, so that the output end of the cylinder element 9 retracts. Then the top plate 11 will fall on the bottom of the cavity 10 on the bottom mold 1. The bottom end of the cylinder element 9 is connected to the two airbag sleeves 25 through a pipeline. The output end of the cylinder element 9 is installed with a top plate 11 by bolts. When demolding after the molding is completed, as the top mold 2 rises, the magnetic block 24 will separate from the magnetic attraction block 27. Then, under the action of the connecting spring 26, the airbag sleeve 25 will retract, so that the air inside the airbag sleeve 25 flows into the cylinder element 9 through the pipeline, and the output end of the cylinder element 9 will rise, so that the top plate 11 jacks up the grille inside the cavity 10, so that the grille inside the cavity 10 rises, facilitating the worker to take the grille, reducing the difficulty of taking the grille from the bottom mold 1, and the top plate 11 is located inside one of the cavities 10.

[0036] Embodiment 2

[0037] This embodiment makes further limitations on the basis of Embodiment 1. Among them, cooling cavities 7 are provided inside both the bottom mold 1 and the top mold 2. Water pipes 8 are inserted into the outer walls on both sides of the bottom mold 1 and the top mold 2. Cooling water is circulated and input into the cooling cavity 7 through the water pipes 8, so that the injection molding materials in the top mold 2 and the bottom mold 1 are formed faster. One end of the water pipe 8 extends into the cooling cavity 7. On the outer walls of both sides of the top of the bottom mold 1, brackets 3 are installed by bolts. And at the center of the outer wall on one side of the top of the bracket 3, a hydraulic cylinder 5 is installed by bolts. The model of the hydraulic cylinder 5 is preferably the Gaojie Automation small pull rod oil cylinder. When the hydraulic cylinder 5 is started, it will make the feeding assembly 13 drive the top mold 2 to move, so that the top mold 2 and the bottom mold 1 are closed. An installation opening 12 is provided at the center of the top of the top mold 2, and a feeding assembly 13 is installed in the installation opening 12 by bolts. The top end of the feeding assembly 13 is fixedly connected to the output end of the hydraulic cylinder 5 by bolts. The feeding assembly 13 includes a mounting seat 14. At the center of the top side of the inner wall of the mounting seat 14, a sleeve 17 is installed by bolts. And a square rod 18 is slidably inserted into the sleeve 17. A base plate 20 is integrally formed at the bottom end of the square rod 18. And discharge valves 21 are provided on the outer walls of both sides of the bottom of the base plate 20. The model of the discharge valve 21 is preferably SGH1DF02N1AC2. A telescopic sleeve 19 is installed between the outer wall of the top of the base plate 20 and the bottom end of the sleeve 17 by bolts. The telescopic sleeve 19 can protect the square rod 18 and prevent the square rod 18 from being damaged. And the square rod 18 is located inside the telescopic sleeve 19. A connecting cylinder 15 is installed at the top of the mounting seat 14 by bolts. And a lead screw motor 16 is installed in the connecting cylinder 15 by bolts. When the top mold 2 and the bottom mold 1 are closed, the worker can operate the lead screw motor 16 to start, so that the square rod 18 slides inside the sleeve 17, and the position of the base plate 20 drops. Then the base plate 20 will fall on the bottom of the cavity 10 of the bottom mold 1. Subsequently, operate one of the connecting valve pipes 22 to open, so that the release agent in one of the storage tanks 4 flows into the discharge valve 21 through the connecting valve pipe 22. Then continue to operate the lead screw motor 16, which will make the base plate 20 drive the discharge valve 21 to move upward slowly, so that the discharge valve 21 can evenly spray the release agent inside the cavity 10, realizing the automatic application of the release agent. After the release agent application is completed, the lead screw motor 16 can be continued to be operated, so that the base plate 20 drives the discharge valve 21 to move downward a certain distance. Subsequently, the connecting valve pipe 22 inside the other storage tank 4 will be opened, so that the injection molding material in the storage tank 4 flows into the two discharge valves 21, and the injection molding material flows into the cavity 10. The output end of the lead screw motor 16 is threadedly connected to the square rod 18. Connecting valve pipes 22 are inserted into the outer walls on both sides of the mounting seat 14. The connecting valve pipe 22 is composed of a pipeline and an electromagnetic valve. And one end of the two connecting valve pipes 22 is connected to one end of the two discharge valves 21 through a pipeline;On both outer walls on the two sides of the top of the support 3, a storage tank 4 is installed through bolts. One of the two storage tanks 4 stores injection molding materials, and the other stores mold release agent. One end of the connecting valve pipe 22 extends into the interior of the storage tank 4. On one outer wall on the top side of the storage tank 4, a liquid level sensor 28 is installed through bolts. The model of the liquid level sensor 28 is preferably DYW-2M-01F. The liquid level sensor 28 can detect the liquid level inside the storage tank 4. According to the liquid level difference detected by the liquid level sensor 28, the solenoid valve on the connecting valve pipe 22 will open, enabling the materials inside the storage tank 4 to flow into the cavity 10 quantitatively. On one outer wall on the top side of the storage tank 4, a box door 31 is provided. At the center of the top of the storage tank 4, a driving motor 29 is installed through bolts. The model of the driving motor 29 is preferably 57BYGH650-23, and the output end of the driving motor 29 is installed with a screw shaft 30 through a coupling. When the driving motor 29 starts, it will cause the screw shaft 30 to rotate, making the materials inside the storage tank 4 surge up and down, avoiding problems such as precipitation and solidification of the materials inside the storage tank 4.;

[0038] Working principle: When using this device to produce gratings, the hydraulic cylinder 5 can be operated to lower the position of the top mold 2. Then, the top mold 2 will be stuck on the bottom mold 1. Subsequently, the magnet block 24 will be inserted into the installation area 23. Then, under the action of the attraction between opposite magnetic poles, the magnet block 24 will adsorb the magnetic attraction block 27, stretching the airbag sleeve 25 and pumping out the air inside the cylinder element 9, causing the output end of the cylinder element 9 to retract. Then, the top plate 11 will fall on the bottom of the cavity 10 on the bottom mold 1. After the top mold 2 and the bottom mold 1 are closed, the worker can operate the lead screw motor 16 to start, causing the square rod 18 to slide inside the sleeve 17 and lowering the position of the substrate 20. Then, the substrate 20 will fall on the bottom of the cavity 10 of the bottom mold 1. Subsequently, one of the connecting valve pipes 22 is operated to open, allowing the release agent inside one of the storage tanks 4 to flow into the discharge valve 21 through the connecting valve pipe 22. Continuing to operate the lead screw motor 16 will cause the substrate 20 to slowly move upward with the discharge valve 21, enabling the discharge valve 21 to evenly spray the release agent inside the cavity 10, realizing the automatic application of the release agent. After the application of the release agent is completed, the lead screw motor 16 can be operated to cause the substrate 20 to move downward with the discharge valve 21 for a certain distance. Subsequently, the connecting valve pipe 22 inside the other storage tank 4 will be opened, allowing the injection molding material inside the storage tank 4 to flow into the two discharge valves 21 and then into the cavity 10. Subsequently, cooling water can be circulated and input into the cooling cavity 7 through the water pipe 8 to accelerate the molding of the injection molding material inside the top mold 2 and the bottom mold 1. After the molding is completed, the magnet block 24 will separate from the magnetic attraction block 27. Then, under the action of the connecting spring 26, the airbag sleeve 25 will retract, causing the air inside the airbag sleeve 25 to flow into the cylinder element 9 through the pipeline, and the output end of the cylinder element 9 will rise, causing the top plate 11 to lift the grating inside the cavity 10, facilitating the worker to take the grating and reducing the difficulty of taking the grating from the bottom mold 1.

[0039] Only some exemplary embodiments of the present invention have been described by way of illustration. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A plastic grille injection mold for a refrigerator, comprising a bottom mold (1), characterized in that A top mold (2) is snap-fitted on the outer wall of the top of the bottom mold (1), and cavities (10) are provided on the outer walls of one side of the top mold (2) and the bottom mold (1). Mounting areas (23) are provided on the outer walls of both sides of the top of the bottom mold (1), and an airbag sleeve (25) is mounted on one side of the inner wall bottom of the mounting area (23) by bolts. A connecting spring (26) is mounted between the inner walls on both sides of the airbag sleeve (25) by bolts. A magnetic attraction block (27) is mounted on one side of the top outer wall of the airbag sleeve (25) by bolts. Magnet blocks (24) are mounted on the outer walls of both sides of the bottom of the top mold (2) by bolts, and the magnet blocks (24) are in contact with the magnetic attraction block (27). A groove (6) is provided on one side of the outer wall of the bottom of the bottom mold (1), and a cylinder element (9) is mounted on one side of the inner wall top of the groove (6) by bolts. The bottom end of the cylinder element (9) is connected to the two airbag sleeves (25) through a pipeline. The output end of the cylinder element (9) is mounted with a top plate (11) by bolts, and the top plate (11) is located inside one of the cavities (10).

2. The injection mold for a plastic grille of a refrigerator according to claim 1, characterized in that, Cooling cavities (7) are provided inside both the bottom mold (1) and the top mold (2). Water inlet pipes (8) are inserted into the outer walls of both sides of the bottom mold (1) and the top mold (2), and one end of the water inlet pipe (8) extends into the cooling cavity (7). Brackets (3) are mounted on the outer walls of both sides of the top of the bottom mold (1) by bolts, and a hydraulic cylinder (5) is mounted at the center of one side of the top outer wall of the bracket (3) by bolts.

3. The injection mold for a plastic grille of a refrigerator according to claim 2, characterized in that, An installation opening (12) is provided at the center of the top of the top mold (2), and a feeding assembly (13) is mounted inside the installation opening (12) by bolts. The top end of the feeding assembly (13) is fixedly connected to the output end of the hydraulic cylinder (5) by bolts.

4. A refrigerator plastic grille injection mold according to claim 3, characterized in that, The feeding assembly (13) includes a mounting seat (14). A sleeve (17) is mounted at the center of one side of the inner wall top of the mounting seat (14) by bolts, and a square rod (18) is slidably inserted into the sleeve (17).

5. The injection mold for a plastic grille of a refrigerator according to claim 4, wherein A substrate (20) is integrally formed at the bottom end of the square rod (18), and discharge valves (21) are provided on the outer walls of both sides of the bottom of the substrate (20). A telescopic sleeve (19) is mounted between the top outer wall of the substrate (20) and the bottom end of the sleeve (17) by bolts, and the square rod (18) is located inside the telescopic sleeve (19).

6. The injection mold for plastic grille of a refrigerator according to claim 5, characterized in that, A connecting cylinder (15) is mounted at the top end of the mounting seat (14) by bolts, and a lead screw motor (16) is mounted inside the connecting cylinder (15) by bolts. The output end of the lead screw motor (16) is in threaded connection with the square rod (18). Connecting valve pipes (22) are inserted into the outer walls of both sides of the mounting seat (14), and one end of each of the two connecting valve pipes (22) is connected to one end of the two discharge valves (21) through a pipeline.

7. A plastic grille injection mold for a refrigerator according to claim 6, characterized in that, On both outer walls of the top of the bracket (3), a storage bin (4) is installed by bolts. One end of the connecting valve pipe (22) extends into the interior of the storage bin (4). On one outer wall of the top of the storage bin (4), a liquid level sensor (28) is installed by bolts. A box door (31) is provided on one outer wall of the top of the storage bin (4). At the center of the top of the storage bin (4), a driving motor (29) is installed by bolts, and the output end of the driving motor (29) is installed with a screw shaft (30) through a coupling.

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