Injection mold for air conditioner shell production

Abstract

The utility model relates to an injection mold for producing an air conditioner shell. The injection mold comprises a base and an upper cover module, a lower mold is mounted on the upper surface of the base, and an upper mold is mounted at the bottom of the upper cover module; the lower mold and the upper mold are matched with each other and can be closed; the upper surface of the lower mold is an outer arched cambered surface, and the upper surface and the bottom surface of the lower mold are enclosed to form a hollow cooling cavity between the upper surface and the bottom surface; a cooling box is formed in the base and located below the bottom of the lower mold. A second water pipe and a third water pipe are communicated between the cooling box and the cooling cavity, so that water circulation between the cooling box and the cooling cavity is realized; a cooling module used for heat dissipation is further installed on the outer side wall of the cooling box. The mold has the effects that rapid cooling molding after injection molding is realized, the cooling time is shortened, the demolding difficulty is reduced, the production efficiency is improved, and the structural compactness of injection molding equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioner production, in particular to an injection mold for producing an air conditioner shell. Background Art

[0002] Air conditioner housings are typically produced using injection molding, a highly efficient and widely used process for manufacturing plastic products. Thermoplastic pellets are fed into the barrel of an injection molding machine, where they are heated to a molten state. A screw or plunger then injects the molten plastic at high pressure into a preheated mold. Once the plastic enters the mold, it is allowed to cool and solidify into the desired shape. After cooling, the solidified plastic housing is removed.

[0003] In existing injection molding technology, after a single injection, the mold cannot be safely opened until the plastic has completely cooled and solidified. This is because the plastic is still in a hot, softened state. Forcibly opening the mold at this point can cause deformation and damage to the product. The cooling process typically takes time, and manual removal of the product is often required. This process not only increases the production cycle time but can also lead to a certain rate of defective products due to human error. Utility Model Content

[0004] In order to overcome the shortcomings of long cooling time of molten plastic and reduced production efficiency caused by manual unloading, the purpose of the utility model is to provide an injection mold for the production of air-conditioning shells with efficient cooling and easy demoulding.

[0005] An injection mold for producing an air conditioner casing comprises a base and an upper cover module; a lower mold is mounted on the upper surface of the base, and an upper mold is mounted on the bottom of the upper cover module, wherein the lower mold and the upper mold mate with each other and can be closed; the upper cover module is located directly above the base and can be raised and lowered relative to the base, thereby closing or separating the upper and lower molds; the special feature is that:

[0006] The upper surface of the lower mold is an outer arched surface, and the upper surface of the lower mold and its bottom surface are enclosed to form a hollow cooling cavity between the two; a cooling box is formed inside the base, below the bottom of the lower mold; a second water pipe and a third water pipe are connected between the cooling box and the cooling cavity, thereby realizing water circulation between the cooling box and the cooling cavity; a cooling module for heat dissipation is also installed on the outer wall of the cooling box.

[0007] Preferably, an isolation plate is provided in the cooling box, and the inner cavity of the cooling box is divided into two independent first water storage chambers and second water storage chambers by the isolation plate; the first water storage chamber and the second water storage chamber are connected by a first water pipe, and the first water pipe is provided with a one-way valve that only limits water to flow from the first water storage chamber to the second water storage chamber; the second water storage chamber and the cooling chamber are connected by a second water pipe, and a first water pump and a second water pump are also provided in the second water storage chamber, the pumping end of the first water pump is connected to the first water pipe, and the output end of the second water pump is connected to the second water pipe; the first water storage chamber and the cooling chamber are connected by a third water pipe; and the cooling module is installed on the outer wall of the first water storage chamber.

[0008] Furthermore, the one-way valve is an electronic one-way valve; a temperature sensor is also installed in the first water storage chamber near the electronic one-way valve; the temperature sensor is connected to the electronic one-way valve signal.

[0009] Preferably, the end of the third water pipe extending into the cooling cavity has its pipe opening no higher than the inner side of the bottom surface of the cooling cavity.

[0010] Preferably, at least one feed pipe is installed on the base, the inlet end of the feed pipe passes downward through the bottom wall of the base, the feed pipe extends upward and passes through the lower mold, and the outlet end is set no higher than the upper surface of the lower mold.

[0011] Preferably, the cooling module includes a plurality of cooling fins and a plurality of fans.

[0012] Preferably, a heat insulation plate is further installed in the base, and the heat insulation plate is located between the top of the cooling box and the bottom of the lower mold.

[0013] Furthermore, a plurality of vertically arranged first guide cylinders are fixedly installed on the base around the outer circumference of the lower mold, and a first guide rod is fixedly inserted in each of the first guide cylinders. The first guide rods are slidably inserted into the upper cover module, and a plurality of the first guide rods are also arranged around the outer circumference of the upper mold; a limit block with a diameter larger than the first guide rod itself is provided on the top of the first guide rod, and the upper cover module can slide up and down along the first guide rod between the first guide cylinder and the limit block.

[0014] Furthermore, a plurality of second guide cylinders are installed on the upper surface of the base, each of which is slidably connected to a second guide rod, and a spring is connected between the bottom of the second guide rod and the inner bottom wall of the second guide cylinder; the top of the second guide rod is connected to a top block, and the diameter of the top block is larger than the tube mouth of the second guide cylinder; the top block can be elastically raised and lowered in the second guide cylinder along with the second guide rod; a plurality of the top blocks are arranged around the outer circumference of the lower mold; the lower mold can be detached relative to the base, and when the lower mold is installed on the base, the side wall of the top block is affixed to the outer surface of the lower mold to limit the lower mold.

[0015] Preferably, a wedge-shaped groove is formed on the upper surface of the top block, and a wedge-shaped block matching the wedge-shaped groove is connected to the outer side of the bottom of the upper mold.

[0016] The beneficial effects of the utility model include: realizing rapid cooling and molding after injection molding, reducing cooling time and demoulding difficulty, improving production efficiency and the structural thoroughness of the injection molding equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the three-dimensional structure of this embodiment;

[0018] Figure 2 This is a partial structural diagram of the lower mold and other structures of this embodiment;

[0019] Figure 3 This is a schematic diagram of the partial structure of the base and other structures of this embodiment;

[0020] Figure 4 Schematic diagram of the cross-sectional structure of this embodiment;

[0021] Figure 5 Schematic diagram of the structure of the upper cover module of this embodiment;

[0022] Figure 6 Schematic diagram of the local structure of the heat insulation board and the like of this embodiment;

[0023] Figure 7 Schematic diagram of the cooling box and other local structures of this embodiment;

[0024] Figure 8 Schematic diagram of the structure of the cooling module of this embodiment;

[0025] Figure 9 is a schematic diagram of one structure of the limit module of this embodiment;

[0026] Figure 10 The limit module of this embodiment is Figure 9 Schematic diagram of one of the structures to be distinguished.

[0027] Figure markings: 100-base; 1-lower mold; 11-cooling chamber; 200-upper cover module; 2-upper mold; 21-magnetic cover plate; 22-wedge block; 3-cooling box; 31-isolation plate; 32-first water storage chamber; 33-second water storage chamber; 41-first water pipe; 42-second water pipe; 43-third water pipe; 44-one-way valve; 45-first water pump; 46-second water pump; 47-temperature sensor; 48-third water pump; 51-cooling fin; 52-fan; 61-first guide cylinder; 62-first guide rod; 63-limiting block; 71-second guide cylinder; 72-second guide rod; 73-spring; 74-top block; 75-wedge groove; 8-thermal insulation board; 9-feeding pipe. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] like Figures 1-10 As shown, an injection mold for producing air conditioner casings includes a base 100 and an upper cover module 200. A lower mold 1 is mounted on the upper surface of the base 100, and an upper mold 2 is mounted on the bottom of the upper cover module 200. The lower mold 1 and upper mold 2 mate with each other and can be closed. The upper cover module 200 is located directly above the base 100 and can be raised and lowered relative to the base 100, allowing the upper mold 2 and lower mold 1 to close or separate.

[0030] like Figures 1-8 As shown, the upper surface of the lower mold 1 is an outer arched surface, and the upper mold 2 is an inner concave arched surface that matches the lower mold 1. The bottom surface of the lower mold 1 is a horizontal plane, and the upper surface of the lower mold 1 and its bottom surface enclose each other to form a hollow cooling cavity 11 between the two.

[0031] Inside the base, below the bottom of the lower mold 1, a cooling tank 3 for storing coolant is formed. A vertical partition plate 31 is installed within the cooling tank 3, dividing the interior of the cooling tank 3 into two independent water storage chambers: a first water storage chamber 32 and a second water storage chamber 33. The first and second water storage chambers 32 and 33 are connected by a first water pipe 41. This first water pipe 41 is equipped with a one-way valve 44 that restricts water flow from the first water storage chamber 32 to the second water storage chamber 33. A second water pipe 42 connects the second water storage chamber 33 to the cooling chamber 11. A first water pump 45 and a second water pump 46 are also installed within the second water storage chamber 33. The pumping end of the first water pump 45 is connected to the first water pipe 41, pumping water from the first water storage chamber 32 to the second water storage chamber 33. The one-way valve 44 is an electronic one-way valve. A temperature sensor 47 is located near the one-way valve 44 within the first water storage chamber 32 and is connected to the electronic one-way valve 44 for signal communication. The output end of the second water pump 46 is connected to the second water pipe 42 and is used to pump water from the second water storage chamber 33 to the cooling chamber 11. The first water storage chamber 32 and the cooling chamber 11 are connected via a third water pipe 43, and a third water pump 48 is also connected to the output end of the third water pipe 43. Both the second water pump 46 and the third water pump 48 are micro-pulse pumps. To facilitate the timely emptying of the coolant in the cooling chamber 11 and its return to the first water storage chamber 32, one end of the third water pipe 43 extends into the cooling chamber 11, with its opening positioned no higher than the inside of the bottom surface of the cooling chamber 11.

[0032] like Figure 8 As shown, a cooling module is further installed on the bottom outer wall of the first water storage chamber 32. The cooling module includes a plurality of cooling fins 51 and a plurality of fans 52.

[0033] Through the above structure, the staggered pulse operation of the second water pump 46 and the third water pump 38 allows coolant to flow from the second water storage chamber 33 into the cooling chamber 11. After cooling for a certain period of time, it flows back into the first water storage chamber 32. The coolant entering the first water storage chamber 32 has a certain amount of heat, which is quickly dissipated by the cooling module. Once the coolant in the first water storage chamber 32 cools to a preset value, the electronic one-way valve 44 opens, and the first water pump 41 is activated simultaneously, pumping the coolant from the first water storage chamber 32 into the second water storage chamber 33. This cycle is repeated, achieving rapid cooling before demolding.

[0034] Furthermore, in order to prevent the heat of the lower mold 1 from affecting the temperature of the coolant in the cooling box 3 , a heat insulation board 8 is installed in the base 100 . The heat insulation board 8 is located between the top of the cooling box 3 and the bottom of the lower mold 1 .

[0035] Furthermore, a plurality of feed pipes 9 are installed on the base 100 , the inlet end of the feed pipe 9 downwardly penetrates the bottom wall of the base 100 , and the feed pipe 9 extends upwardly and penetrates the lower mold 1 and the outlet end thereof is not higher than the upper surface of the lower mold 1 .

[0036] like Figure 1-4 As shown, a guide module is also provided to assist in guiding the upper cover module 200 in its upward and downward movement relative to the base 100. Several vertically arranged first guide cylinders 61 are fixedly mounted on the base 100 around the periphery of the lower mold 1. A first guide rod 62 is fixedly inserted into each first guide cylinder 61. The first guide rods 62 are slidably inserted into the upper cover module 200. Several first guide rods 62 are also arranged around the periphery of the upper mold 2. A stop block 63 with a larger diameter than the first guide rod 62 is located at the top of each first guide rod 62. The upper cover module 200 can slide up and down along the first guide rods 62 between the first guide cylinder 61 and the stop block 63.

[0037] In addition, the limit block 63 may be magnetic, and a magnetic cover plate 21 may be provided on the upper surface of the limit block 63 to protect the upper cover module 200 from dust. A driving device may be applied to the top or side wall of the upper cover module 200 to enable it to move up and down.

[0038] like Figure 2-3 As shown in Figures 9-10, the lower mold 1 is usually removable and installable relative to the base 100 to facilitate cleaning of the lower mold 1. The lower mold 1 is generally installed by inserting corresponding holes on corresponding pipes, such as the second water pipe 42, the third water pipe 43, and the fallopian tube 9, to achieve positioning. After the upper mold 2 and the lower mold 1 are closed, an appropriate gap must be maintained between the two to facilitate injection molding. In order to prevent the lower mold 1 from floating up and down, which would result in unstable gap thickness during injection molding, the guide module further includes the following structure: a plurality of second guide cylinders 71 are also installed on the upper surface of the base 100, each of which is slidably connected to a second guide rod 72, a spring 73 is connected between the bottom of the second guide rod 72 and the inner bottom wall of the second guide cylinder 71, and a top block 74 is connected to the top of the second guide rod 72, the diameter of which is larger than the tube mouth of the second guide cylinder 71. The top block 74 can elastically move up and down in the second guide cylinder 71 along with the second guide rod 72. Several top blocks 74 are arranged around the outer periphery of the lower mold 1. Some of the top blocks 74 have a flat top surface; others have a wedge-shaped groove 75 formed on their top surface. A wedge-shaped block 22 matching the wedge-shaped groove 75 is connected to the outer side of the bottom of the upper mold 2.

[0039] During use, the upper cover module 200 moves down to the base 100, the upper mold 2 is closed with the lower mold 1, and the wedge block 22 is clamped in the wedge groove 75, so that the top block 74 moves downward along the second guide cylinder 71 along with the second guide rod 72, the spring 73 is compressed, and the side wall and bottom wall of the top block 74 are pressed against the arched outer surface of the lower mold 1 to ensure that the lower mold 1 is installed and pressed into place and will not move during the injection molding process. At the same time, it also ensures that the upper mold 2 and the lower mold 1 are closed in place to prevent the molten plastic from overflowing, ensuring the complete molding of the air conditioner shell and the sealing of the injection mold. Secondly, when the injection molding is completed, when the upper mold 2 is separated from the lower mold 1, under the reaction force of the spring 73, the top block 74 rises. Since its side wall fits with the side wall of the injection molded part, it can drive the injection molded part to rise and separate from the lower mold 1.

[0040] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An injection mold for producing an air conditioner casing, comprising a base and an upper cover module; a lower mold is mounted on the upper surface of the base, and an upper mold is mounted on the bottom of the upper cover module, the lower mold and the upper mold being mated and capable of being closed; the upper cover module is located directly above the base and can be raised and lowered relative to the base, thereby closing and separating the upper and lower molds; characterized in that: The upper surface of the lower mold is an outer arched surface, and the upper surface of the lower mold and its bottom surface are enclosed to form a hollow cooling cavity between the two; a cooling box is formed inside the base, below the bottom of the lower mold; a second water pipe and a third water pipe are connected between the cooling box and the cooling cavity, thereby realizing water circulation between the cooling box and the cooling cavity; a cooling module for heat dissipation is also installed on the outer wall of the cooling box.

2. The injection mold for producing an air conditioner housing according to claim 1, characterized in that: An isolation plate is provided in the cooling box, and the inner cavity of the cooling box is divided into two independent first water storage chambers and second water storage chambers by the isolation plate; the first water storage chamber and the second water storage chamber are connected by a first water pipe, and the first water pipe is provided with a one-way valve that only limits water to flow from the first water storage chamber to the second water storage chamber; the second water storage chamber and the cooling chamber are connected by a second water pipe, and a first water pump and a second water pump are also provided in the second water storage chamber, the pumping end of the first water pump is connected to the first water pipe, and the output end of the second water pump is connected to the second water pipe; the first water storage chamber and the cooling chamber are connected by a third water pipe; and the cooling module is installed on the outer wall of the first water storage chamber.

3. The injection mold for producing an air conditioner housing according to claim 2, characterized in that: The one-way valve is an electronic one-way valve; a temperature sensor is also installed in the first water storage chamber near the electronic one-way valve; the temperature sensor is connected to the electronic one-way valve signal.

4. An injection mold for producing an air conditioner housing according to claim 1 or 2, characterized in that: The end of the third water pipe extending into the cooling cavity has its pipe opening no higher than the inner side of the bottom surface of the cooling cavity.

5. The injection mold for producing an air conditioner housing according to claim 1, characterized in that: At least one material delivery pipe is installed on the base, the inlet end of the material delivery pipe downwardly penetrates the bottom wall of the base, the material delivery pipe extends upward and penetrates the lower mold, and the outlet end thereof is arranged no higher than the upper surface of the lower mold.

6. The injection mold for producing an air conditioner housing according to claim 1, characterized in that: The cooling module includes a plurality of cooling fins and a plurality of fans.

7. The injection mold for producing an air conditioner housing according to claim 1, characterized in that: A heat insulation plate is also installed in the base, and the heat insulation plate is located between the top of the cooling box and the bottom of the lower mold.

8. The injection mold for producing an air conditioner housing according to claim 1, characterized in that: Several vertically arranged first guide cylinders are fixedly installed on the base around the outer circumference of the lower mold, and a first guide rod is fixedly inserted in each of the first guide cylinders. The first guide rods are slidably inserted into the upper cover module, and several of the first guide rods are also arranged around the outer circumference of the upper mold; a limit block with a diameter larger than the first guide rod itself is provided on the top of the first guide rod, and the upper cover module can slide up and down along the first guide rod between the first guide cylinder and the limit block.

9. The injection mold for producing an air conditioner housing according to claim 1, characterized in that: A plurality of second guide cylinders are also installed on the upper surface of the base, each of which is slidably connected to a second guide rod, and a spring is connected between the bottom of the second guide rod and the inner bottom wall of the second guide cylinder; the top of the second guide rod is connected to a top block, and the diameter of the top block is larger than the tube mouth of the second guide cylinder; the top block can be elastically raised and lowered in the second guide cylinder along with the second guide rod; a plurality of the top blocks are arranged around the outer circumference of the lower mold; the lower mold can be detachable relative to the base, and when the lower mold is installed on the base, the side wall of the top block is in contact with the outer surface of the lower mold to limit the lower mold.

10. The injection mold for producing an air conditioner shell according to claim 9, characterized in that: A wedge-shaped groove is formed on the upper surface of the top block, and a wedge-shaped block matching the wedge-shaped groove is connected to the outer side of the bottom of the upper mold.

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