Multi-station refrigerator accessory injection mold

Abstract

The multi-station refrigerator accessory injection mold comprises an upper mold, a lower mold, a fixing piece, a liquid cooling pipeline and injection molding grooves, the six injection molding grooves are formed in the lower mold, four positioning columns are arranged on the upper end face of the lower mold, the liquid cooling pipeline is arranged in the lower mold, four positioning holes are formed in the upper mold, and the fixing piece is arranged on the fixing piece. Positioning columns are inserted into the positioning holes, and fixing pieces are spirally installed on the tops of the positioning columns. According to the multi-station refrigerator accessory injection mold, a plurality of injection molding grooves are additionally formed in one set of injection mold, and injection molding and demolding can be simultaneously carried out, so that the injection molding efficiency of refrigerator accessories is greatly improved, the operation steps of workers are saved, and in addition, the multi-station refrigerator accessory injection mold is also provided with a liquid cooling channel; and the cooling forming speed of the material can be increased after material injection.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a multi-station refrigerator accessory injection mold. Background Art

[0002] A refrigerator is a refrigeration device that maintains a constant low temperature. It is also a civilian product that keeps food or other items at a constant low temperature. The box contains a compressor, an ice maker, a cabinet or box for freezing, and a storage box with a refrigeration device. Nowadays, most refrigerator accessories are made of plastic materials and are injection molded by injection molds. However, the existing refrigerator accessory injection molds still have shortcomings: when the injection plastic is injected into the injection cavity between the lower concave mold and the upper convex mold through the injection pipe, most of them only realize the cold solidification of the injection molded part by absorbing the heat of the lower concave mold and the upper convex mold. The waiting time of the entire solidification process is relatively long, which increases the time interval for injection molding of a single injection molded part, thereby reducing the efficiency of the injection molding process of refrigerator accessories.

[0003] An existing refrigerator accessory injection mold, such as a refrigerator accessory injection mold with announcement number CN216068558U, comprises a base, a lower mold base arranged on the top of the base, a lower concave mold arranged on the inner side of the lower mold base, an upper mold base arranged on the top of the lower mold base, an upper convex mold fixed to the bottom of the upper mold base, and an injection pipe connected to the top of the upper mold base, wherein the lower mold base and the lower concave mold are split structures, a liquid storage cavity is formed between the lower mold base and the lower concave mold, the top of the base is in a rectangular array and is fixedly connected with four support brackets for supporting the lower mold base to a certain height, and the A pure copper sheet with a hollow internal structure is installed between the four supporting brackets, and a fan is installed on the top rear side of the base. The front end of the fan is connected to a turbine blade. A circulating cooling structure is adopted to absorb the heat of the injection molding material in a circular manner to achieve rapid cooling and solidification of the injection molded parts, shortening the injection molding time of a single injection molded part, thereby improving the efficiency of the injection molding process of the refrigerator storage box. However, there is only one injection slot in the injection mold, so a single injection molding operation can only injection mold one refrigerator accessory, which is inefficient. The injection molding efficiency can be improved by increasing the injection slot.

[0004] Therefore, it is necessary to invent a multi-station refrigerator parts injection mold to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a multi-station refrigerator accessory injection mold to solve the technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-station refrigerator accessory injection mold, comprising an upper mold, a lower mold, a fixing part, a liquid cooling pipe and an injection groove, the lower mold having six injection grooves, four positioning columns on the upper end surface of the lower mold, a liquid cooling pipe inside the lower mold, four positioning holes on the upper mold, positioning columns inserted in the positioning holes, and a fixing part screwed on the top of the positioning column.

[0007] Preferably, three insertion holes are opened in the upper mold, six bosses are provided at the bottom of the upper mold, a positioning hole is opened at each of the four corners of the upper mold, a handle is fixedly installed on each side surface of the upper mold, and handles are provided at both ends for easy and stable removal and placement of the upper mold.

[0008] Preferably, a layer of upper mold convex blocks is provided on the boss, and a circle of sealing grooves is opened on the upper mold around the boss. The sealing grooves and the sealing rings on the lower mold can improve the sealing performance in the injection groove during injection molding.

[0009] Preferably, the bottom of the lower mold is fixedly connected to a base plate, and a fixing hole is opened at the edge of the base plate. A positioning column is fixedly welded at each of the four corners of the top of the lower mold, and a threaded hole is opened on the top of the positioning column. The fixing holes on the base plate facilitate fixing the entire lower mold on the workbench to improve the stability of the overall mold during injection molding. The threaded holes on the positioning columns can be used in conjunction with the screws in the fixing parts to fix the upper mold and the lower mold.

[0010] Preferably, a liquid cooling pipe is opened inside the lower mold around the injection groove. The liquid cooling pipe is an "S"-shaped structure that surrounds the injection groove. Circular pipe openings are provided at the pipe openings at both ends of the liquid cooling pipe. The "S"-shaped liquid cooling pipe surrounds the injection groove, thereby expanding the heat absorption area and accelerating the cooling effect.

[0011] Preferably, two symmetrical grooves in the injection molding groove are provided with communicating discharge ports, and the lower mold is provided with three injection tubes, which can pass through the slots to connect the injection molding raw materials, and the raw materials are injected into the injection molding groove after the upper mold and the lower mold are closed.

[0012] Preferably, the injection pipe is connected to each group of discharge ports respectively, and the lower mold is provided with a circle of sealing rings around the notch of the injection groove. One injection pipe together with two symmetrical injection grooves can simultaneously fill the two injection grooves with production raw materials.

[0013] Preferably, a circular plate is provided inside the fixing part, the diameter of the circular plate is larger than the diameter of the positioning hole, a screw is fixedly welded to the lower end of the fixing part, and after the screw falls into the positioning column, the circular plate can limit the upper mold on the positioning column of the lower mold.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. By adding multiple injection slots in a set of injection molds, and performing injection molding and demoulding at the same time, the injection efficiency of refrigerator accessories is greatly improved, and the operation steps of the staff are saved. In addition, the multi-station refrigerator accessories injection mold is also provided with a liquid cooling channel, which can speed up the cooling and molding speed of the material after injection;

[0016] 2. Through high production efficiency and reduced production time, manufacturers can reduce the production cost per unit product. In addition, the addition of liquid cooling pipes can optimize the cooling process of the mold, reduce energy consumption, and further reduce production costs;

[0017] 3. The cold pipe design helps to achieve a more uniform cooling effect and reduce defects such as deformation and shrinkage caused by uneven cooling, which helps to improve the appearance quality and performance stability of the product and meet the strict requirements of customers. The liquid cooling pipe design can reduce the thermal stress of the mold during the injection molding process and reduce the risk of mold damage. At the same time, the multi-station design can also share the load of the mold and further extend the service life of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall external structure of a multi-station refrigerator parts injection mold;

[0019] Figure 2 Schematic diagram of the main structure of the lower mold;

[0020] Figure 3 Schematic diagram of the bottom structure of the upper mold;

[0021] Figure 4 It is a cross-sectional view of the internal structure of the lower die;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the fixing part.

[0023] Description of reference numerals:

[0024] 1. Upper mold; 2. Lower mold; 3. Bottom plate; 4. Fixing parts; 5. Injection tube; 6. Handle; 7. Liquid cooling pipe; 8. Fixing hole; 9. Positioning column; 10. Injection groove; 11. Sealing ring; 12. Discharge port; 13. Threaded hole; 14. Sealing groove; 15. Boss; 16. Upper mold convex block; 17. Positioning hole; 18. Socket; 19. Round plate; 20. Screw. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model provides Figure 1-5A multi-station refrigerator accessory injection mold shown in the figure comprises an upper mold 1, a lower mold 2, a fixing part 4, a liquid cooling pipe 7 and an injection groove 10, six injection grooves 7 are opened in the lower mold 2, four positioning columns 9 are arranged on the upper end surface of the lower mold 2, a liquid cooling pipe 7 is arranged inside the lower mold 2, four positioning holes 17 are opened on the upper mold 1, positioning columns 9 are inserted in the positioning holes 17, and the fixing part 4 is screwed on the top of the positioning column 9, three plug holes 18 are opened in the upper mold 1, six bosses 15 are arranged at the bottom of the upper mold 1, a positioning hole 17 is opened at each of the four corners of the upper mold 1, a handle 6 is fixedly installed on each of the two side surfaces of the upper mold 1, a layer of upper mold convex blocks 16 is arranged on the boss 15, and a circle of sealing grooves 14 are opened around the boss 15 of the upper mold 1, a bottom plate 3 is fixedly connected to the bottom of the lower mold 2, and a fixing hole 8 is opened at the edge of the bottom plate 3, a positioning column 9 is fixedly welded at each of the four corners of the top of the lower mold 2, and a threaded hole 13 is opened on the top of the positioning column 9.

[0027] A liquid cooling pipe 7 is opened around the injection groove 10 inside the lower mold 2. The liquid cooling pipe 7 is an "S"-shaped structure that surrounds the injection groove 10. Circular pipe openings are provided at the pipe openings at both ends of the liquid cooling pipe 7. Two symmetrical grooves in the injection groove 10 are provided with interconnected discharge ports 12. Three injection pipes 5 are provided on the lower mold 2. The injection pipes 5 are respectively connected to each group of discharge ports 12. A circle of sealing rings 14 is provided around the groove of the injection groove 10 of the lower mold 2. A layer of circular plate 19 is provided inside the fixing part 4. The diameter of the circular plate 19 is larger than the hole diameter of the positioning hole 17. A screw 20 is fixedly welded to the lower end of the fixing part 4.

[0028] Working principle of this utility model:

[0029] Refer to the instruction manual Figure 1-5 When using the utility model, first, the fixing holes 8 on the bottom plate 3 can be used in conjunction with screws to fix the lower mold 2 as a whole on a table, which can maintain the stability of the overall injection mold during the injection molding process, and then the jack 18 is aligned with the injection tube 5 and inserted, and the positioning column 9 is inserted into the positioning hole 17 at the same time, so that the upper mold 1 can be stably placed on the upper and lower molds 2, and then the fixing piece 4 is screwed into the threaded hole 13, which can completely fix the upper mold 1 and the lower mold 2. Then, the raw material filling pipe is connected to the three injection pipes 5 to inject raw materials into the injection tank 10 and start injection molding. After the filling is completed, circulating cooling water is input into the liquid cooling pipe 7 to accelerate the molding rate of the raw material in the injection tank 10.

Claims

1. A multi-station refrigerator parts injection mold, comprising an upper mold (1), a lower mold (2), a fixing member (4), a liquid cooling pipe (7) and an injection groove (10), characterized in that: The lower mold (2) has six injection grooves (10), the upper end surface of the lower mold (2) is provided with four positioning columns (9), the lower mold (2) has a liquid cooling pipe (7) inside, and the upper mold (1) has four positioning holes (17), the positioning columns (9) are inserted into the positioning holes (17), and the top of the positioning columns (9) is screwed with a fixing part (4).

2. A multi-station refrigerator parts injection mold according to claim 1, characterized in that: The upper mold (1) has three insertion holes (18) formed therein, the bottom of the upper mold (1) is provided with six bosses (15), four corners of the upper mold (1) each have a positioning hole (17), and two side surfaces of the upper mold (1) are each fixedly mounted with a handle (6).

3. A multi-station refrigerator parts injection mold according to claim 2, characterized in that: A layer of upper die convex blocks (16) is provided on the boss (15), and a circle of sealing grooves (14) are formed around the boss (15) on the upper die (1).

4. The multi-station refrigerator parts injection mold according to claim 1, characterized in that: The bottom of the lower mold (2) is fixedly connected to a bottom plate (3), a fixing hole (8) is opened at the edge of the bottom plate (3), and a positioning column (9) is fixedly welded at each of the four corners of the top of the lower mold (2), and a threaded hole (13) is opened at the top of the positioning column (9).

5. The multi-station refrigerator parts injection mold according to claim 1, characterized in that: A liquid cooling pipe (7) is provided inside the lower mold (2) around the injection molding groove (10); the liquid cooling pipe (7) is an "S"-shaped structure surrounding the injection molding groove (10); and circular pipe openings are provided at the pipe openings at both ends of the liquid cooling pipe (7).

6. The multi-station refrigerator parts injection mold according to claim 1, characterized in that: Two symmetrical grooves in the injection grooves (10) are provided with communicating discharge ports (12), and the lower mold (2) is provided with three injection pipes (5).

7. The multi-station refrigerator parts injection mold according to claim 6, characterized in that: The injection pipe (5) is respectively connected to each group of discharge ports (12), and the lower mold (2) is provided with a circle of sealing rings (11) around the notch of the injection groove (10).

8. The multi-station refrigerator parts injection mold according to claim 1, characterized in that: A circular plate (19) is provided inside the fixing member (4), the diameter of the circular plate (19) is larger than the diameter of the positioning hole (17), and a screw (20) is fixedly welded to the lower end of the fixing member (4).

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