An injection molding mold for an air conditioner housing

Abstract

This utility model discloses an injection molding mold for an air conditioner housing, relating to the field of injection molding technology. It features the advantage of simultaneously ejecting the product vertically and laterally removing the undercut area, preventing damage to complex and large air conditioner outdoor units caused by forceful demolding, and avoiding difficulties in demolding products in areas prone to sticking. The key technical points are: it includes a front mold frame and a rear mold frame; the front mold frame has a front mold core, and the rear mold frame has a rear mold core; when the front and rear mold cores are closed, they form a mold cavity for producing the air conditioner outdoor unit housing; a base plate is provided on the side of the rear mold frame away from the front mold frame, and the base plate is connected to the rear mold frame via square irons on both sides; a first connecting plate and a second connecting plate are provided on one side of the base plate, and the first and second connecting plates are connected by a support assembly.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection molding mold for an air conditioner housing. Background Technology

[0002] The main functions of the air conditioner outdoor unit casing are protection, ventilation, and aesthetics. Its design must be robust to protect the internal core components such as the compressor and condenser from external damage such as wind, rain, and impact. At the same time, the casing is covered with precisely calculated grilles and openings to ensure efficient air circulation, meet heat dissipation requirements, and prevent foreign objects from entering.

[0003] In order to efficiently and precisely mass-produce air conditioner outdoor unit casings that combine excellent weather resistance, sufficient structural strength, complex ventilation structure and beautiful appearance, the casings are usually made of engineering plastics (such as ABS) through injection molding.

[0004] However, due to its huge projected area and complex rib structure, the outer casing of the air conditioner outdoor unit will tightly wrap around the core when it cools and shrinks, generating a huge clamping force. Its huge surface area also means that the frictional resistance with the mold is extremely large. Therefore, sticking to the mold will occur at the bottom of the deep cavity, between the deep and narrow reinforcing ribs, and in local areas with poor surface roughness or poor venting. The demolding resistance is abnormally increased, which hinders the direct vertical demolding of the product. Forced demolding can easily damage the product. Utility Model Content

[0005] To address the aforementioned technical deficiencies, the purpose of this utility model is to provide an injection molding mold for an air conditioner housing that, while vertically ejecting the product, also laterally removes the undercut area, preventing damage to complex and large air conditioner outdoor units caused by forceful demolding, and also avoiding difficulties in demolding the product in areas prone to sticking to the mold.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model provides an injection molding mold for an air conditioner housing, including a front mold frame and a rear mold frame. The front mold frame is provided with a front mold core, and the rear mold frame is provided with a rear mold core. When the front mold core and the rear mold core are closed, a mold cavity is formed for generating the air conditioner outdoor unit housing. The rear mold frame is provided with a base plate on the side opposite to the front mold frame, and the base plate is connected to the rear mold frame by square irons located on both sides. A first connecting plate and a second connecting plate are provided on one side of the base plate, and the first connecting plate and the second connecting plate are connected by a support component. The second connecting plate has a plurality of main ejector pins integrated thereon. The main ejector pins penetrate the rear mold core, and the end face of the main ejector pins is flush with the end face of the rear mold core. The easy-to-stick area of ​​the rear mold core is also penetrated by several first moving grooves, and the first moving grooves are provided with inclined top components that are detached from the generated air conditioner outdoor unit housing mold.

[0007] Through the above technical solution, when the injection molding machine controls the movement of the first and second connecting plates, it will drive the main ejector pins on the second connecting plate to move. The main ejector pins integrated in the second connecting plate constitute the main ejection system of the mold. After the mold is opened, the thrust of the injection molding machine acts on the first and second connecting plates, pushing all the main ejector pins and auxiliary ejector pins forward synchronously, thereby ejecting the molded product smoothly and evenly from the rear mold core. An inclined ejector assembly is set in the easy-to-stick area of ​​the rear mold core. The inclined ejector assembly will move laterally while ejecting, thereby pulling the undercut area laterally while vertically ejecting the product, preventing damage to complex and large air conditioner outdoor unit products caused by strong demolding, and also avoiding the product being difficult to demold in the easy-to-stick area.

[0008] Preferably, the inclined ejector assembly includes a secondary ejector pin connected to a first connecting plate. A second moving groove is formed through the second connecting plate. The secondary ejector pin passes through the second moving groove through the second connecting plate and enters the first moving groove. The top of the secondary ejector pin entering the first moving groove is flush with the end face of the rear mold core. A recessed retainer is provided on the upper side of the secondary ejector pin. The middle part of the secondary ejector pin closes the first moving groove. A C-shaped inclined ejector groove is provided on the lower side of the secondary ejector pin. An inclined ejector block adapted to the inclined ejector groove is fixed to the inner wall of the first moving groove.

[0009] Preferably, the support assembly includes support blocks located at the four corners of the first connecting plate; the support blocks are L-shaped; an ear plate is fixed on the first connecting plate, and the support blocks are sleeved on the ear plate and hinged to the ear plate; rollers are connected to both ends of the support blocks, one roller is located outside the second connecting plate, and the other roller is located between the first and second connecting plates and supports the second connecting plate; a connecting block that mates with one of the rollers is fixed on the side of the second connecting plate near the first connecting plate.

[0010] Preferably, the secondary ejector pin is made of an elastic high-temperature resistant metal material, which includes either spring steel or a high-temperature nickel-based alloy.

[0011] Preferably, a plurality of guide rods are fixed on the base plate. The guide rods pass through the first connecting plate and the second connecting plate and are slidably connected to the first connecting plate and the second connecting plate. One end of the guide rod that passes through the second connecting plate is fixed to the rear mold frame.

[0012] Preferably, the guide rod is fitted with a return spring, which connects the base plate and the first connecting plate.

[0013] The beneficial effects of this utility model are as follows: When the injection molding machine controls the movement of the first connecting plate and the second connecting plate, it will drive the main ejector pins on the second connecting plate to move. The main ejector pins integrated in the second connecting plate constitute the main ejection system of the mold. After the mold is opened, the thrust of the injection molding machine acts on the first and second connecting plates, pushing all the main ejector pins and auxiliary ejector pins forward synchronously, thereby ejecting the molded product smoothly and evenly from the rear mold core. An inclined ejector assembly is set in the easy-to-stick area of ​​the rear mold core. The inclined ejector assembly will move laterally while ejecting, thereby pulling the undercut area laterally while vertically ejecting the product, preventing damage to complex and large air conditioner outdoor unit products caused by strong demolding, and also avoiding the product being difficult to demold in the easy-to-stick area. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a schematic diagram illustrating the structure of the mold core in this embodiment; Figure 3 This is a cross-sectional structural diagram of the rear mold core in this embodiment; Figure 4 This is a schematic diagram illustrating the structure of the secondary ejector pin in this embodiment.

[0016] Explanation of reference numerals in the attached figures: In the diagram: 1. Front mold base; 2. Rear mold base; 3. Rear mold core; 4. Base plate; 5. Square iron; 6. First connecting plate; 7. Second connecting plate; 8. Support assembly; 801. Support block; 802. Ear plate; 803. Roller; 804. Connecting block; 9. Main ejector pin; 10. Angled ejector assembly; 1001. Secondary ejector pin; 1011. Recessed chuck; 1012. Angled ejector groove; 102. Angled ejector block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] An injection molding mold for an air conditioner housing, such as Figures 1 to 4 It includes a front mold frame 1 and a rear mold frame 2. The front mold frame 1 is provided with a front mold core, and the rear mold frame 2 is provided with a rear mold core 3. When the front mold core and the rear mold core 3 are closed, they form a mold cavity for producing the housing of the outdoor unit of the air conditioner. A base plate 4 is provided on the side of the rear mold frame 2 away from the front mold frame 1. The base plate 4 is connected to the rear mold frame 2 by square irons 5 located on both sides. A first connecting plate 6 and a second connecting plate 7 are provided on one side of the base plate 4, and the first connecting plate 6 and the second connecting plate 7 are connected by a support component 8; The second connecting plate 7 has several main ejector pins 9 integrated on it. The main ejector pins 9 penetrate the rear mold core 3, and the end face of the main ejector pin 9 is flush with the end face of the rear mold core 3. The easy-to-stick area of ​​the rear mold core 3 is also connected by several first moving grooves, and the first moving grooves are provided with inclined ejector components 10 that are separated from the generated air conditioner outdoor unit housing mold.

[0019] When the injection molding machine controls the movement of the first connecting plate 6 and the second connecting plate 7, it will drive the main ejector pins 9 on the second connecting plate 7 to move. The main ejector pins 9 integrated in the second connecting plate 7 constitute the main ejection system of the mold. After the mold is opened, the thrust of the injection molding machine acts on the first and second connecting plates 7, pushing all the main ejector pins 9 and the auxiliary ejector pins 101 forward synchronously, thereby ejecting the molded product smoothly and evenly from the rear mold core 3. An inclined ejector assembly 10 is set in the easy-to-stick area of ​​the rear mold core 3. The inclined ejector assembly 10 will move laterally while ejecting, thereby pulling the undercut area laterally while vertically ejecting the product, preventing damage to complex and large air conditioner outdoor unit products caused by strong demolding, and also avoiding the product being difficult to demold in the easy-to-stick area.

[0020] like Figure 3 and Figure 4 The inclined ejector assembly 10 includes a secondary ejector pin 101 connected to the first connecting plate 6. A second moving groove is provided through the second connecting plate 7. The secondary ejector pin 101 passes through the second moving groove through the second connecting plate 7 and enters the first moving groove. The top of the secondary ejector pin 101 entering the first moving groove is flush with the end face of the rear mold core 3. A recessed retainer 1011 is provided on the upper side of the secondary ejector pin 101. The middle part of the secondary ejector pin 101 closes the first moving groove. A C-shaped inclined ejector groove 1012 is provided on the lower side of the secondary ejector pin 101. An inclined ejector block 102 adapted to the inclined ejector groove 1012 is fixed on the inner wall of the first moving groove. The movement of the first connecting plate 6 will drive the movement of the second connecting plate 7, the main ejector pin 9, and the secondary ejector pin 101. When the secondary ejector pin 101 moves to the part of the inclined ejector groove 1012 and contacts the inclined ejector block 102, the secondary ejector pin 101 tilts, causing the recessed retainer 1011 of the secondary ejector pin 101 to separate from the product. The end faces of the main ejector pin 9 and the secondary ejector pin 101 are flush with the end face of the rear mold core 3. This means that during the injection stage, the ejector pins will not leave unnecessary marks on the surface of the product.

[0021] like Figure 3 and Figure 4 The support assembly 8 includes support blocks 801 located at the four corners of the first connecting plate 6; the support blocks 801 are L-shaped; an ear plate 802 is fixed on the first connecting plate 6, and the support blocks 801 are sleeved on the ear plate 802 and hinged to the ear plate 802; rollers 803 are connected to both ends of the support blocks 801, one roller 803 is located outside the second connecting plate 7, and the other roller 803 is located between the first connecting plate 6 and the second connecting plate 7 and supports the second connecting plate 7; a connecting block 804 that cooperates with one of the rollers 803 is fixed on the side of the second connecting plate 7 near the first connecting plate 6. When the first connecting plate 6 moves upward, it drives the second connecting plate 7 to move. However, when the first connecting plate moves to the point where one of the rollers 803 contacts the top block, the support blocks 801 rotate, supporting the second connecting plate 7 to move upward again. The upward movement of the second connecting plate 7 will drive several main ejector pins 9 to move upward, thus performing a secondary ejection operation.

[0022] like Figure 3 and Figure 4 The secondary ejector pin 101 is made of an elastic, high-temperature resistant metal material, including either spring steel or a high-temperature nickel-based alloy. This allows the secondary ejector pin 101 to undergo controllable elastic bending when in contact with the inclined ejector block 102, thus achieving tilting motion. After completion, it can completely return to its original shape on its own, preparing for the next injection cycle.

[0023] like Figure 3 and Figure 4 Several guide rods are fixed on the base plate 4. The guide rods pass through the first connecting plate 6 and the second connecting plate 7 and are slidably connected to the first connecting plate 6 and the second connecting plate 7. One end of the guide rod protruding from the second connecting plate 7 is fixed to the rear mold frame 2. Through the action of the guide rods, the movement of the first connecting plate 6 and the second connecting plate 7 is guided and limited.

[0024] The guide rod sleeve is equipped with a return spring, which connects the base plate 4 and the first connecting plate 6. This facilitates the first connecting plate 6 returning to its initial position.

[0025] When in use, the entire device is mounted on the injection molding machine. This is existing technology, so it will not be described in detail here. After the mold is opened, the injection molding machine pushes the first connecting plate 6 to move. The movement of the first connecting plate 6 will drive the support block 801 to move. The movement of the support block 801 will drive the second connecting plate 7 to move, which in turn will drive the main ejector pin 9 on the second connecting plate 7 and the auxiliary ejector pin 101 on the first connecting plate 6 to move synchronously, thereby ejecting the molded air conditioner outdoor unit product smoothly and evenly from the rear mold core 3. When the secondary ejector pin 101 moves to the inclined ejector groove 1012 and contacts the inclined ejector block 102, the secondary ejector pin 101 tilts laterally, thereby ejecting the product vertically while pulling it out laterally from the undercut area, so that the recessed locking head 1011 of the secondary ejector pin 101 separates from the product, avoiding the product being difficult to demold in the easy-to-stick mold area, and preventing damage to complex and large air conditioner outdoor unit products caused by strong demolding. When one of the rollers 803 of the support block 801 contacts the adjacent connecting block 804, the support block 801 rotates around the hinge connection point with the ear plate 802. The support block 801 pushes the second connecting plate 7 to move a second time, causing the main ejector pin 9 to move upward and perform a second ejection operation, further improving the demolding effect.

[0026] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An air conditioner outer shell injection molding mold, comprising a front mold frame (1) and a rear mold frame (2), a front mold core is arranged on the front mold frame (1), and a rear mold core (3) is arranged on the rear mold frame (2), characterized in that, When the front mold core and the rear mold core (3) are closed, they form a mold cavity for generating the housing of the outdoor unit of the air conditioner; The rear mold frame (2) is provided with a base plate (4) on the side away from the front mold frame (1), and the base plate (4) is connected to the rear mold frame (2) by square irons (5) located on both sides. The base plate (4) is provided with a first connecting plate (6) and a second connecting plate (7) on one side, and the first connecting plate (6) and the second connecting plate (7) are connected by a support component (8); The second connecting plate (7) has a plurality of main ejector pins (9) integrated on it. The main ejector pins (9) penetrate the rear mold core (3) and the end face of the main ejector pins (9) is flush with the end face of the rear mold core (3). The easy-to-stick area of ​​the rear mold core (3) is also provided with several first moving grooves, and the first moving grooves are provided with inclined top components (10) that are separated from the generated air conditioner outdoor unit housing mold.

2. The injection molding mold for an air conditioner outer case according to claim 1, wherein The inclined ejector assembly (10) includes a secondary ejector pin (101) connected to the first connecting plate (6). The second connecting plate (7) has a second moving groove through it. The secondary ejector pin (101) passes through the second connecting plate (7) through the second moving groove and enters the first moving groove. The top of the secondary ejector pin (101) entering the first moving groove is flush with the end face of the rear mold core (3). The upper side of the secondary ejector pin (101) is provided with a recessed locking head (1011). The middle part of the secondary ejector pin (101) closes the first moving groove; The lower side of the secondary ejector pin (101) is provided with a C-shaped inclined ejector groove (1012). The inner wall of the first movable groove is fixed with an inclined top block (102) that is adapted to the inclined top groove (1012).

3. The injection molding mold for an air conditioner housing according to claim 1, wherein The support assembly (8) includes support blocks (801) located at the four corners of the first connecting plate (6). The support block (801) is L-shaped; An ear plate (802) is fixed on the first connecting plate (6), and the support block (801) is sleeved on the ear plate (802) and hinged to the ear plate (802); Both ends of the support block (801) are connected to rollers (803), one of which is located outside the second connecting plate (7), and the other roller (803) is located between the first connecting plate (6) and the second connecting plate (7) and supports the second connecting plate (7). The second connecting plate (7) has a connecting block (804) fixed on the side near the first connecting plate (6) to cooperate with one of the rollers (803).

4. The injection molding mold for an air conditioner housing according to claim 2, wherein The secondary ejector pin (101) is made of an elastic high-temperature resistant metal material, which includes spring steel or a high-temperature nickel-based alloy.

5. The air conditioner housing injection molding mold as described in claim 1, characterized in that, A number of guide rods are fixed on the base plate (4). The guide rods pass through the first connecting plate (6) and the second connecting plate (7) and are slidably connected to the first connecting plate (6) and the second connecting plate (7). One end of the guide rod that passes through the second connecting plate (7) is fixed to the rear mold frame (2).

6. The air conditioner housing injection molding mold as described in claim 5, characterized in that, The guide rod is fitted with a reset spring, which connects the base plate (4) and the first connecting plate (6).

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