An injection mold for appliance casings

Abstract

This utility model relates to the field of appliance casing mold technology, and discloses an injection mold for appliance casing, including a support frame, a mold assembly, and an injection hole. The mold assembly is fitted and snapped into the support frame, and the injection hole is located at one end of the mold assembly. It includes a sliding assembly, an ejector assembly, and a buffer assembly. The sliding assembly is mounted on the mold assembly, the ejector assembly is located at one end of the mold assembly, and the buffer assembly is mounted on the ejector assembly. The present utility model proposes that the sliding protrusions on both sides of the bottom end of the mold assembly are fitted and slidably into the grooves on the support frame, facilitating the installation and disassembly of the mold assembly and aiding in mold maintenance and replacement. The ejector assembly uses a hydraulic rod to drive the ejector plate and ejector rod, stably and powerfully ejecting the formed appliance casing. The buffer assembly has a buffer protrusion and a buffer layer at the end of the ejector rod, effectively buffering the impact force at the moment of ejection, avoiding defects such as ejection marks on the casing surface, and significantly improving the product's appearance quality.

Description

Technical Field

[0001] This utility model relates to the field of household appliance casing mold technology, specifically to an injection mold for household appliance casings. Background Technology

[0002] A patent document with the publication number "An Injection Mold for a Home Appliance Shell" discloses an injection molding mold for a home appliance shell. A traction bar connects the push plate and the fixed mold plate. At least one traction tensioning assembly is fixed to the top of the fixed mold plate to tension the traction bar. The traction tensioning assembly includes a straight guide rail and a slider elastic traction module. The length direction of the straight guide rail is perpendicular to the mold opening direction. A roller slider is slidably connected to the straight guide rail. A movable pulley is rotatably connected to the roller slider. The traction bar passes over the movable pulley. The pressure of the traction bar on the movable pulley is the traction pressure. The elastic traction module provides a pulling force equal to the traction pressure to the roller slider. Using this invention improves the quality of the demolded part and reduces the risk of whitening during demolding. The traction bar is located at the top of the mold, so the line of sight is not obstructed when spraying release agent. This ensures safe mold operation and is suitable for plastic parts molds with small thickness and large opening stroke.

[0003] However, the above-mentioned solutions and existing technologies still have some shortcomings in the buffer design of the ejection components of some mold equipment during the demolding process after injection molding. During the ejection process, due to the lack of a buffer structure, the ejection rod directly acts on the molded appliance shell, which is very easy to cause appearance defects such as ejection marks on the shell surface due to impact force. Therefore, improvements and optimizations are needed.

[0004] Therefore, this utility model proposes an injection mold for household appliance casings to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this utility model is to provide an injection mold for the casing of household appliances to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an injection mold for a household appliance casing, comprising a support frame, a mold assembly, and an injection hole, wherein the mold assembly is adapted to be snapped into the support frame, and the injection hole is disposed at one end of the mold assembly;

[0007] The invention is characterized by comprising a sliding component, an ejection component, and a buffer component, wherein the sliding component is disposed on the mold component, the ejection component is disposed on one end of the mold component, and the buffer component is disposed on the ejection component.

[0008] Preferably, the sliding protrusions in the sliding assembly are evenly distributed on both sides of the bottom end of the mold assembly, and the sliding protrusions are adapted to slide into the fitting groove, which is fixedly mounted on the support frame.

[0009] Preferably, one end of the hydraulic rod in the ejection assembly is fixedly mounted on a fixing plate, and the fixing plate is located on the side of the mold assembly.

[0010] Preferably, an ejector plate is fixedly provided on the other end of the hydraulic rod in the ejector assembly, and ejector rods are uniformly fixedly provided on the ejector plate.

[0011] Preferably, the ejector rod in the ejector assembly is adapted to slide and engage with the ejector hole, and the ejector hole is evenly distributed on the mold assembly.

[0012] Preferably, the buffer protrusion in the buffer assembly is fixedly disposed on one end of the ejector rod, and a buffer layer is uniformly disposed on the buffer protrusion.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the sliding protrusions on both sides of the bottom end of the mold assembly are adapted to the interlocking grooves on the support frame for sliding engagement, which facilitates the installation and disassembly of the mold assembly and the maintenance and replacement of the mold. The ejection assembly uses hydraulic rods to drive the ejection plate and ejection rod, which can stably and powerfully eject the molded appliance shell. In particular, the buffer assembly is provided with a buffer protrusion and a buffer layer at the end of the ejection rod, which effectively buffers the impact force at the moment of ejection, avoids defects such as ejection marks on the surface of the shell, significantly improves the appearance quality of the product, reduces the defect rate, reduces mold wear, extends the mold service life, and comprehensively optimizes the performance of the injection mold for appliance shells in the production process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the sliding component structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the ejector assembly structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the buffer component structure of this utility model.

[0018] In the figure: support frame 1, mold assembly 2, injection hole 3, sliding assembly 4, ejection assembly 5, buffer assembly 6, sliding protrusion 401, interlocking groove 402, hydraulic rod 501, fixing plate 502, ejection plate 503, ejection rod 504, ejection hole 505, buffer protrusion 601, buffer layer 602. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this utility model, not all embodiments, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. The technical solutions in the embodiments of this utility model will be clearly and completely described below.

[0020] Example 1: Please refer to Figures 1 to 2 An injection mold for a household appliance casing includes a support frame 1, a mold assembly 2, and an injection hole 3. The mold assembly 2 is fitted and snapped into the support frame 1, and the injection hole 3 is located at one end of the mold assembly 2. The mold assembly 2 also includes a sliding assembly 4, an ejection assembly 5, and a buffer assembly 6. The sliding assembly 4 is located on the mold assembly 2, the ejection assembly 5 is located at one end of the mold assembly 2, and the buffer assembly 6 is located on the ejection assembly 5.

[0021] The sliding protrusions 401 in the sliding component 4 are evenly arranged on both sides of the bottom end of the mold component 2. The sliding protrusions 401 are adapted to slide and fit into the fitting groove 402, and the fitting groove 402 is fixedly set on the support frame 1.

[0022] In use, first place the mold assembly 2 on top of the support frame 1, so that the sliding protrusions 401 evenly distributed on both sides of the bottom end of the mold assembly 2 are precisely aligned with the interlocking grooves 402 on the support frame 1. Then, slowly push the mold assembly 2, and the sliding protrusions 401 will slide smoothly along the interlocking grooves 402 until the mold assembly 2 is completely locked in the support frame 1. This process realizes the quick installation of the mold assembly 2 and the support frame 1. If it is necessary to maintain, clean or replace some parts of the mold in the future, simply push the mold assembly 2 in the opposite direction to easily remove it from the support frame 1, which greatly improves the convenience of mold maintenance.

[0023] Example 2: Based on Example 1, please refer to... Figures 2 to 3 One end of the hydraulic rod 501 in the ejection assembly 5 is fixedly mounted on the fixing plate 502, which is located on the side of the mold assembly 2.

[0024] An ejector plate 503 is fixedly installed on the other end of the hydraulic rod 501 in the ejector assembly 5, and ejector rods 504 are evenly fixed on the ejector plate 503.

[0025] When in use, after the mold completes the injection molding process, the formed appliance shell needs to be ejected. At this time, the ejection assembly 5 starts to work. The fixed plate 502 located on the side of the mold assembly 2 remains stable. One end of the hydraulic rod 501 is fixed on the fixed plate 502, and the other end starts and extends. As the hydraulic rod 501 extends, the ejection plate 503 fixedly connected to it is pushed forward. Since the ejection rods 504 are evenly fixed on the ejection plate 503, the movement of the ejection plate 503 drives the ejection rods 504 to move forward synchronously, thereby applying an ejection force to the appliance shell formed in the mold assembly 2, laying the foundation for subsequent complete demolding.

[0026] Example 3: Based on Example 2, please refer to... Figures 3 to 4 In the ejector assembly 5, the ejector rod 504 is adapted to slide and engage with the ejector hole 505, and the ejector holes 505 are evenly distributed on the mold assembly 2.

[0027] The buffer protrusion 601 in the buffer assembly 6 is fixedly installed on one end of the ejector rod 504, and a buffer layer 602 is evenly provided on the buffer protrusion 601.

[0028] During use, as the ejector rod 504 moves forward with the ejector plate 503, it slides along the ejector holes 505 evenly distributed on the mold assembly 2 to ensure a smooth and accurate ejection process. When the ejector rod 504 contacts the molded appliance casing, the buffer protrusion 601 fixed at its end plays its role. The buffer layer 602 evenly distributed on the buffer protrusion 601 contacts the appliance casing at the moment of ejection, effectively dispersing and absorbing the impact force, avoiding defects such as ejection marks and dents on the surface of the casing due to direct force, ensuring the appearance quality of the product, and completing a high-quality demolding process.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An injection mold for a household appliance casing, comprising a support frame (1), a mold assembly (2), and an injection hole (3), wherein the mold assembly (2) is fitted and fastened within the support frame (1), and the injection hole (3) is disposed at one end of the mold assembly (2); characterized in that It includes a sliding component (4), an ejection component (5), and a buffer component (6). The sliding component (4) is disposed on the mold assembly (2), the ejection component (5) is disposed on one end of the mold assembly (2), and the buffer component (6) is disposed on the ejection component (5).

2. The injection mold for a housing of an electric home appliance according to claim 1, wherein: The sliding protrusions (401) in the sliding assembly (4) are evenly arranged on both sides of the bottom end of the mold assembly (2). The sliding protrusions (401) are adapted to slide and fit into the fitting groove (402). The fitting groove (402) is fixedly arranged on the support frame (1).

3. The injection mold for a housing of an electric home appliance according to claim 1, wherein: One end of the hydraulic rod (501) in the ejection assembly (5) is fixedly mounted on the fixing plate (502), which is located on the side of the mold assembly (2).

4. The injection mold for a housing of an electric home appliance according to claim 3, wherein: An ejector plate (503) is fixedly provided on the other end of the hydraulic rod (501) in the ejector assembly (5), and ejector rods (504) are uniformly fixed on the ejector plate (503).

5. The appliance shell injection mold of claim 4, wherein: The ejector rod (504) in the ejector assembly (5) is adapted to slide and engage with the ejector hole (505), which is evenly arranged on the mold assembly (2).

6. The appliance shell injection mold of claim 1, wherein: The buffer protrusion (601) in the buffer assembly (6) is fixedly disposed on one end of the ejector rod (504), and a buffer layer (602) is uniformly disposed on the buffer protrusion (601).

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