Home appliance shell injection mold

Abstract

The utility model discloses a household appliance shell injection mold, and relates to the field of injection molds. The die comprises an upper die body and a lower die body, a plurality of positioning pins are fixedly arranged on the upper die body, pin hole mechanisms are arranged on the lower die body and opposite to the positioning pins, a limiting plate is clamped to the inner side of a clamping groove in a sliding mode through the pin hole mechanisms, and meanwhile after the limiting plate abuts against a sleeve, the limiting plate is clamped to the inner side of the clamping groove in a sliding mode. The baffle is installed on one side of the lower die through the fastening bolt, the limiting plate is further fixed, the stability of the limiting plate in the working process of the die is ensured, final limiting of the sleeve is achieved through the abutting effect of the baffle, the whole installation process is rapid, easy and convenient, and the working efficiency is improved. The maintenance convenience of the guide system in the injection mold is greatly improved, the maintenance cost is reduced, the use efficiency of the mold is improved, and the service life of the mold is prolonged.

Description

Technical Field

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

[0002] Injection molds for appliance casings are key tools in appliance manufacturing. Their design must consider the optimization of product structure, wall thickness, gating system, cooling system, and demolding mechanism to ensure efficient injection molding and product quality.

[0003] During the use of molds, as the usage time increases, the positioning pins and positioning sleeves used for guidance will experience severe wear, reducing the service life of the mold. If the positioning holes and positioning sleeves are severely worn, there is a problem with the inconvenience of replacement and maintenance. Most traditional molds are one-piece structures, which further reduces the convenience of mold maintenance. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide an injection mold for the casing of household appliances to solve the technical problem that the guide system of traditional one-piece molds is difficult to maintain.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an injection mold for a household appliance casing, comprising an upper mold and a lower mold. The upper mold is fixedly provided with several positioning pins. The lower mold is provided with a pin hole mechanism opposite to the positioning pins. The pin hole mechanism includes a mounting hole. A sleeve is fitted inside the mounting hole. A slot is formed on one side of the mounting hole. A limiting plate engages and slides inside the slot. The limiting plate abuts against the sleeve. A baffle is installed on one side of the lower mold opposite to the limiting plate via fastening bolts. The side of the limiting plate near the sleeve has an arc-shaped structure.

[0006] By adopting the above technical solution, several positioning pins are fixedly set on the upper mold, and a pin hole mechanism is set on the lower mold at the position opposite to the positioning pins, which realizes the precise positioning of the mold when the mold is closed and improves the accuracy and stability of injection molding.

[0007] Furthermore, the baffle is used to limit the position of the limiting plate, and one side of the baffle is coplanar with the limiting plate and the lower mold.

[0008] By adopting the above technical solution, the stability and reliability of the limiting plate in the lower mold are ensured during the mold's operation, preventing the limiting plate from shifting due to uneven force or external interference, thus affecting the mold's accuracy and service life.

[0009] Furthermore, sliding pieces are provided on both sides of the limiting plate, and the limiting plate slides by engaging with the slot through the sliding pieces.

[0010] By adopting the above technical solution, the limiting plate can slide by engaging with the slot, realizing the flexible movement and fixation of the limiting plate. At the same time, the cooperation between the sliding plate and the slot also has a certain guiding effect, enabling the limiting plate to maintain a stable trajectory during movement and avoiding the decrease in mold precision or damage caused by deviation of the movement trajectory.

[0011] Furthermore, the limiting plate has an inclined surface on the side near the sleeve, and abuts against the inclined surface of the sleeve.

[0012] By adopting the above technical solution, not only is the contact area and friction between the limiting plate and the sleeve enhanced, but the limiting plate can also be more evenly distributed on the sleeve when under force, thus avoiding sleeve deformation or damage caused by uneven force.

[0013] Furthermore, a push plate is movably provided on one side of the lower mold, and a plurality of demolding push rods are provided on one side of the push plate, with the ends of the demolding push rods extending into the mold groove inside the lower mold.

[0014] By adopting the above technical solution, the mold can be easily demolded after injection molding.

[0015] Furthermore, the push plate is connected to an external pushing mechanism to achieve a demolding effect.

[0016] By adopting the above technical solutions, the demolding operation of the mold is automated and intelligent, reducing manual intervention and labor intensity. In the lower mold, the precise control of the propulsion mechanism makes the demolding process more stable and reliable, avoiding product damage or mold damage caused by improper demolding.

[0017] In summary, the present invention has the following main advantages:

[0018] 1. This utility model uses a pin hole mechanism to slide and engage the limiting plate inside the slot. This process allows the limiting plate to move flexibly along the slot until its inclined surface gradually contacts the sleeve and generates a contact force, thereby achieving initial positioning of the sleeve. This not only simplifies the installation steps but also improves the installation accuracy and stability. At the same time, after the limiting plate abuts against the sleeve, the baffle is installed on one side of the lower mold with fastening bolts to further fix the limiting plate. This not only ensures the stability of the limiting plate during mold operation but also achieves final positioning of the sleeve through the contact action of the baffle. The entire installation process is quick and easy, greatly improving the maintenance convenience of the guiding system in the injection mold, reducing maintenance costs, and improving the mold's efficiency and lifespan.

[0019] 2. This utility model uses a limiting plate and an inclined surface. As the limiting plate continues to move, the contact force between the inclined surface and the sleeve gradually increases until a sufficient limiting effect is achieved. This gradually increasing contact force not only enhances the stability of the mold, but also helps to prevent sleeve displacement or deformation caused by uneven force during injection molding. Therefore, the inclined surface plays an important role in improving the accuracy and stability of the mold, providing a strong guarantee for the high-quality production of injection molds. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the lower mold of this utility model;

[0022] Figure 3 This is a schematic diagram of the installation structure of the limiting plate of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the limiting plate of this utility model;

[0024] Figure 5 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0025] In the diagram: 1. Upper mold; 2. Lower mold; 3. Push plate; 4. Demolding push rod; 5. Positioning pin; 6. Pin hole mechanism; 601. Mounting hole; 602. Sleeve; 603. Slot; 604. Limiting plate; 605. Sliding piece; 606. Inclined surface; 607. Baffle; 608. Fastening bolt. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] Example 1:

[0028] An injection mold for appliance casings, such as Figure 1-5As shown, the device includes an upper mold 1 and a lower mold 2. Several positioning pins 5 are fixedly installed on the upper mold 1. A pin hole mechanism 6 is provided on the lower mold 2, opposite to the positioning pins 5. The pin hole mechanism 6 includes a mounting hole 601, a sleeve 602 is fitted inside the mounting hole 601, and a slot 603 is provided on one side of the mounting hole 601. A limiting plate 604 engages and slides inside the slot 603, and the limiting plate 604 abuts against the sleeve 602. A fastening bolt is used on one side of the lower mold 2, opposite to the limiting plate 604. The 608 is equipped with a baffle 607, and the limiting plate 604 has an arc-shaped structure on the side near the sleeve 602. Several positioning pins 5 are fixedly set on the upper mold 1, and a pin hole mechanism 6 is set on the lower mold 2 at the position opposite to the positioning pins 5. This realizes the precise positioning of the mold when the mold is closed, and improves the accuracy and stability of injection molding. At the same time, the sleeve 602 is sleeved on the inner side of the mounting hole in the pin hole mechanism 6, so that the sleeve 602 can be easily replaced after wear without replacing the entire lower mold, thus reducing maintenance costs.

[0029] See Figure 1 , Figure 5 The baffle 607 is used to limit the position of the limiting plate 604. One side of the baffle 607 is coplanar with the limiting plate 604 and the lower mold 2. In the lower mold 2, it ensures the stability and reliability of the limiting plate 604 during the mold operation process, and prevents the limiting plate 604 from being displaced due to uneven force or external interference, thereby affecting the accuracy and service life of the mold. At the same time, the fact that one side of the baffle 607 is coplanar with the limiting plate 604 and the lower mold 2 not only improves the overall aesthetics of the mold, but also makes the mold more tightly closed, improving the quality and yield of the product.

[0030] See Figure 1 , Figure 4 The limiting plate 604 is provided with sliding pieces 605 on both sides. The limiting plate 604 slides by engaging with the slot 603 through the sliding pieces 605, so that the limiting plate 604 can move and be fixed flexibly. At the same time, the cooperation between the sliding pieces 605 and the slot 603 also has a certain guiding effect, so that the limiting plate 604 can maintain a stable trajectory during movement, avoiding the decrease in mold accuracy or damage caused by deviation of the movement trajectory. In addition, the setting of the sliding pieces 605 also makes the installation and disassembly of the limiting plate 604 more convenient, improving the maintenance efficiency of the mold.

[0031] Example 2:

[0032] See Figure 4The limiting plate 604 has an inclined surface 606 on the side near the sleeve 602, which abuts against the inclined surface of the sleeve 602. This not only enhances the contact area and friction between the limiting plate 604 and the sleeve 602, but also allows the limiting plate 604 to be more evenly distributed on the sleeve 602 when under force, avoiding deformation or damage to the sleeve 602 due to uneven force. At the same time, the inclined surface 606 also allows the limiting plate 604 to gradually abut against the sleeve 602 during movement, realizing the gradual fixation and limiting of the sleeve 602, and improving the accuracy and stability of the mold.

[0033] See Figure 1 , Figure 2 A push plate 3 is movably installed on one side of the lower mold 2, and several demolding push rods 4 are installed on one side of the push plate 3. The ends of the demolding push rods 4 extend into the mold groove inside the lower mold 2, so that the mold can be easily demolded after injection molding. At the same time, the ends of the demolding push rods 4 extend into the mold groove inside the lower mold 2, ensuring that the demolding push rods 4 can directly act on the injection molded product, achieving a fast and efficient demolding effect.

[0034] See Figure 1 , Figure 2 The push plate 3 is connected to the external pushing mechanism to achieve the demolding effect, realizing the automation and intelligence of the mold demolding operation, reducing manual intervention and labor intensity. In the lower mold 2, the precise control of the pushing mechanism also makes the demolding process more stable and reliable, avoiding product damage or mold damage caused by improper demolding. In addition, the automated demolding operation also improves production efficiency and product quality, reduces production costs and scrap rate, and provides strong technical support for the production of injection molds for home appliance shells.

[0035] The implementation principle of this embodiment is as follows: When maintenance of the guiding system is required, firstly, a new sleeve 602 is placed inside the mounting hole 601. Then, the upper mold 1 and the lower mold 2 are fastened together, and the positioning pin 5 is inserted into the sleeve 602 to limit the position of the sleeve 602. Then, the limiting plate 604 is slidably engaged inside the slot 603. At the same time, the limiting plate 604 gradually abuts against the sleeve 602 at an angle to limit the position of the sleeve 602. Afterward, the baffle 607 is installed on one side of the lower mold 2 with fastening bolts 608 and abuts against the limiting plate 604 to complete the installation operation of the limiting plate 604 and the installation operation of the sleeve 602. This allows for quick positioning and installation of the sleeve 602, improving the convenience of maintenance of the guiding system in the injection mold.

[0036] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An injection mold for a household appliance casing, characterized in that: The device includes an upper mold (1) and a lower mold (2). The upper mold (1) is fixedly provided with several positioning pins (5). The lower mold (2) is provided with a pin hole mechanism (6) at a position opposite to the positioning pins (5). The pin hole mechanism (6) includes a mounting hole (601). A sleeve (602) is sleeved inside the mounting hole (601). A slot (603) is opened on one side of the mounting hole (601). A limiting plate (604) is engaged and slidably moved inside the slot (603). The limiting plate (604) abuts against the sleeve (602). A baffle (607) is installed on one side of the lower mold (2) at a position opposite to the limiting plate (604) by fastening bolts (608). The side of the limiting plate (604) near the sleeve (602) has an arc-shaped structure.

2. The injection mold for appliance casing according to claim 1, characterized in that: The baffle (607) is used to limit the position of the limiting plate (604), and one side of the baffle (607) is in the same plane as the limiting plate (604) and the lower mold (2).

3. The injection mold for appliance casing according to claim 1, characterized in that: The limiting plate (604) is provided with sliding pieces (605) on both sides, and the limiting plate (604) slides and engages with the slot (603) through the sliding pieces (605).

4. The injection mold for appliance casing according to claim 1, characterized in that: The limiting plate (604) has an inclined surface (606) on the side near the sleeve (602) and abuts against the inclined surface of the sleeve (602).

5. The injection mold for appliance casing according to claim 1, characterized in that: A push plate (3) is movably provided on one side of the lower mold (2), and a plurality of demolding push rods (4) are provided on one side of the push plate (3), with the ends of the demolding push rods (4) extending into the mold groove inside the lower mold (2).

6. The injection mold for appliance casing according to claim 5, characterized in that: The push plate (3) is connected to an external pushing mechanism to achieve the demolding effect.

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