Pre-pulling mechanism for deep-cavity mold of household electrical appliance product

Abstract

The utility model relates to the field of mold manufacturing, and discloses a pre-pulling mechanism of a deep-cavity mold of a household appliance product, which comprises a fixed mold side fixing plate, the bottom end of the fixed mold side fixing plate is fixedly connected with a stripper plate, the bottom end of the stripper plate is fixedly connected with a fixed mold plate, the bottom end of the fixed mold plate is abutted against a movable mold plate, and the movable mold plate is fixedly connected with the fixed mold side fixing plate. Square iron is fixedly connected to the bottom end of the movable mold plate, a movable mold fixing plate is fixedly connected to the bottom end of the square iron, an ejector plate is fixedly connected to the top end of the movable mold fixing plate, a fixed mold core is fixedly connected to the interior of the fixed mold plate, and a movable mold core is fixedly connected to the interior of the movable mold plate. According to the utility model, the fixed mold loose core, the nylon pin, the fixed rod, the power spring, the first-pulling fixed plate and other structures are matched for use, so that a molded article is prevented from being attached to the fixed mold core, the shutdown and cleaning time in the production process can be reduced, and the process variability in the production process can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of mold manufacturing, in particular to a pre-drawing mechanism for a deep-cavity mold of a household appliance product. Background Art

[0002] The pre-extraction device for deep-cavity molds for home appliance products plays a critical role in the injection molding process, especially when manufacturing large or deep-cavity parts. It is designed to help effectively reduce or eliminate defects that may occur in plastic products during the injection process, such as bubbles, short materials, and air congestion. By preemptively exhausting the air from the mold, this device ensures that the plastic material can fully fill every corner of the mold, thus avoiding the formation of voids or uneven molding, thereby improving the overall molding quality and surface finish of the product. The application of this technology not only improves production efficiency, but also significantly improves the visual and functional characteristics of the final product, allowing home appliance products to better meet the needs of the market and consumers.

[0003] To save costs, existing deep-cavity molds for home appliances typically do not pre-extract the core from the deep cavity. This prevents the deep cavity from receiving effective support and cooling, leading to deformation or distortion during the molding process, particularly under high temperatures and high pressures. Furthermore, the deep cavity may exhibit uneven wall thickness, bubbles, or marks. To address these issues, those skilled in the art have proposed a pre-extraction mechanism for deep-cavity molds for home appliances. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a pre-extraction mechanism for deep cavity molds of home appliance products, aiming to improve the problem that deep cavity molds of home appliance products in the prior art generally do not extract the forming core of the deep cavity part in advance in order to save costs.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A pre-extraction mechanism for a deep-cavity mold for household appliances comprises a fixed mold side fixing plate, the bottom end of the fixed mold side fixing plate is fixedly connected to a sprue plate, the bottom end of the sprue plate is fixedly connected to a fixed mold plate, the bottom end of the fixed mold plate abuts against a movable mold plate, the bottom end of the movable mold plate is fixedly connected to a square iron, the bottom end of the square iron is fixedly connected to a movable mold fixing plate, the top end of the movable mold fixing plate is fixedly connected to a pin plate, the interior of the fixed mold plate is fixedly connected to a fixed mold core, the interior of the movable mold plate is fixedly connected to the movable mold core, a fixed mold core is installed inside the fixed mold core, a nylon pin is installed inside the fixed mold plate, a fixing rod is provided inside the sprue plate, a limiting screw is provided inside the fixed mold plate, a power spring is installed inside the fixed mold plate, and a pre-extraction fixing plate is installed on the upper side of the fixed mold plate.

[0007] Furthermore, the exterior of the fixed plate on the fixed die side is fixedly connected to the interior of the fixed die plate, and the inner wall of the square iron is slidably connected to the exterior of the ejector plate.

[0008] Furthermore, the interior of the first-pull fixed plate is slidably connected to the exterior of the fixed mold core pulling, and the interior of the first-pull fixed plate is fixedly connected to the exterior of the nylon pin.

[0009] Furthermore, the interior of the first-draw fixing plate is threadedly connected to the exterior of the power spring.

[0010] Furthermore, the internal thread of the fixed mold side fixing plate is connected with a fixing rod screw, and the internal thread of the first-drawing fixing plate is connected with a fixed mold core-pulling screw.

[0011] Furthermore, the outer portion of the fixing rod screw is threadedly connected to the inner portion of the fixing rod, and the inner portion of the fixed mold core-pulling device is threadedly connected to the outer portion of the fixed mold core-pulling screw.

[0012] Furthermore, the internal thread of the fixed die plate is connected to the fixed die core screw, and the internal thread of the movable die plate is connected to the movable die core screw.

[0013] Furthermore, the interior of the fixed mold core is threadedly connected to the exterior of the fixed mold core screw, and the interior of the movable mold core is threadedly connected to the exterior of the movable mold core screw.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the present invention, by pulling out the forming core of the deep cavity part in advance, the formed object is prevented from adhering to the fixed mold core, thereby ensuring smooth molding and demoulding of the product, thereby avoiding the formed object from adhering to the fixed mold core, reducing downtime and cleaning time in the production process, and helping to reduce process variability in production and improve product consistency and stability.

[0016] 2. In the utility model, when the mold is opened, the fixed mold core and the movable mold core can be quickly separated to ensure that the product is smoothly ejected from the mold and avoid damage or deformation. After the mold is opened, the ejector plate pushes the product out, so that the molded product is completely separated from the mold, thereby ensuring that the product is smoothly ejected from the mold and avoiding damage or deformation of the product due to uneven force during the demoulding process, and improving production efficiency and production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of the first extraction mechanism of a deep cavity mold for household appliances proposed in the utility model;

[0018] Figure 2 This is an exploded view of the pre-extraction mechanism of a deep cavity mold for household appliances proposed in the present invention;

[0019] Figure 3 The utility model is a schematic diagram of the fixed mold core-pulling structure of the pre-pulling mechanism of a deep cavity mold for household appliances.

[0020] Legend:

[0021] 1. Fixed plate on the fixed mold side; 2. Gate plate; 3. Fixed mold plate; 4. Moving mold plate; 5. Square iron; 6. Ejector plate; 7. Moving mold fixed plate; 8. Fixed mold core; 9. Moving mold core; 10. Fixed mold core pulling; 11. Nylon pin; 12. Fixed rod; 13. Limit screw; 14. Power spring; 15. First pull out the fixed plate; 16. Fixed rod screw; 17. Fixed mold core pulling screw; 18. Fixed mold core screw; 19. Moving mold core screw. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Reference Figure 1-Figure 3 The utility model provides an embodiment: a pre-extraction mechanism for a deep-cavity mold of a household appliance product, comprising a fixed mold side fixing plate 1, the bottom end of the fixed mold side fixing plate 1 is fixedly connected to a sprue plate 2, the bottom end of the sprue plate 2 is fixedly connected to a fixed mold plate 3, the outside of the fixed mold side fixing plate 1 is fixedly connected to the inside of the fixed mold plate 3, the bottom end of the fixed mold plate 3 abuts against a movable mold plate 4, the bottom end of the movable mold plate 4 is fixedly connected to a square iron 5, the bottom end of the square iron 5 is fixedly connected to a movable mold fixing plate 7, the top of the movable mold fixing plate 7 is fixedly connected to an ejector plate 6, the inner wall of the square iron 5 is slidably connected to the outside of the ejector plate 6, the inside of the fixed mold plate 3 is fixedly connected to a fixed mold core 8, and the inside of the movable mold plate 4 is fixedly connected to a movable mold core 9.

[0024] Specifically, the fixed mold side fixing plate 1 is used to fix the fixed mold part of the mold system to provide structural support and stability. The sprue plate 2 is set at the hopper and feed port in the mold to guide the molten material into the mold cavity. The fixed mold plate 3 is fixed to the mold plate on the injection molding machine. It is part of the mold and is used to form one side of the product. The movable mold plate 4 is opposite to the fixed mold plate and is used to close the mold and separate when the mold is opened to form the other side of the product. The square iron 5 is used to position or support the mold structure to ensure the correct alignment of each component. The ejector plate 6 is used to push out the molded part or eject the gate after the mold is opened and take the finished product out of the mold. The movable mold fixing plate 7 is used to support and fix the movable mold part to ensure the stability of the movable mold. The fixed mold core 8 is the core component of the fixed mold part and is directly involved in the molding of the product. The movable mold core 9 is the core component of the movable mold part and is directly involved in the molding of the product.

[0025] Reference Figure 2 and Figure 3 The interior of the fixed mold core 8 is installed with a fixed mold core pulling 10, the interior of the fixed mold plate 3 is installed with a nylon pin 11, the interior of the nozzle plate 2 is provided with a fixing rod 12, the interior of the fixed mold plate 3 is provided with a limiting screw 13, the interior of the fixed mold plate 3 is installed with a power spring 14, and the upper side of the fixed mold plate 3 is installed with a first-pull fixed plate 15, the interior of the first-pull fixed plate 15 is slidingly connected to the outside of the fixed mold core pulling 10, the interior of the first-pull fixed plate 15 is fixedly connected to the outside of the nylon pin 11, and the interior of the first-pull fixed plate 15 is threadedly connected to the outside of the power spring 14.

[0026] Specifically, the fixed mold core pulling 10 is used to pull out the molding core of the deep cavity part when opening the mold, which helps the molding and demolding of complex shapes. The nylon pin 11 is used to connect the fixed plate 15 to be pulled out first, which serves as a sliding component to reduce friction. The fixed rod 12 is used to fix the gate plate 2 in the mold structure to ensure the overall stability. The limit screw 13 limits the moving distance of the mold to prevent the mold from being damaged due to excessive movement. The power spring 14 provides the power required for opening the mold to assist the opening and closing of the mold. The fixed plate 15 is used to pull out the molding core of the deep cavity part when opening the mold, which assists the molding and demolding process.

[0027] Reference Figure 3 The internal thread of the fixed plate 1 on the fixed mold side is connected with the fixing rod screw 16, and the external part of the fixing rod screw 16 is connected with the internal thread of the fixing rod 12. The internal thread of the fixed plate 15 is connected with the fixed mold core-pulling screw 17, and the internal part of the fixed mold core-pulling screw 10 is connected with the external thread of the fixed mold core-pulling screw 17. The internal thread of the fixed mold plate 3 is connected with the fixed mold core screw 18, and the internal part of the fixed mold core 8 is connected with the external thread of the fixed mold core screw 18. The internal thread of the movable mold plate 4 is connected with the movable mold core screw 19, and the internal part of the movable mold core 9 is connected with the external thread of the movable mold core screw 19.

[0028] Specifically, the fixing rod screw 16 is used to fix the fixing rod to ensure that its position remains unchanged, the fixed mold core screw 17 is used to fix the fixed mold core to ensure its position and function during use, the fixed mold core screw 18 is used to fix the fixed mold core 8 to ensure its accurate position in the mold, and the movable mold core screw 19 is used to fix the movable mold core 9 to ensure its accurate position in the mold.

[0029] Working principle: When the mold is opened, the nylon pin 11 pulls the fixed plate 15 under the action of the mold opening force of the molding machine, and the power spring 14 bounces the fixed plate 15 to force the fixed plate 15 to drive the fixed mold core pulling 10 to first remove the molding core of the deep cavity part to prevent the fixed mold core 8 from sticking to the fixed mold core 8 and causing defects. The fixed mold core 8 and the movable mold core 9 open the mold, the ejector plate 6 is ejected, and the product is ejected.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pre-extraction mechanism for a deep cavity mold of a household appliance product, comprising a fixed mold side fixing plate (1), characterized in that: The bottom end of the fixed die side fixed plate (1) is fixedly connected to a nozzle plate (2), the bottom end of the nozzle plate (2) is fixedly connected to a fixed die plate (3), the bottom end of the fixed die plate (3) is in contact with a movable die plate (4), the bottom end of the movable die plate (4) is fixedly connected to a square iron (5), the bottom end of the square iron (5) is fixedly connected to a movable die fixed plate (7), the top end of the movable die fixed plate (7) is fixedly connected to an ejector plate (6), the interior of the fixed die plate (3) is fixedly connected to a fixed die core (8 ), the movable die plate (4) is fixedly connected to the movable die core (9), the fixed die core (8) is installed with a fixed die core puller (10), the fixed die plate (3) is installed with a nylon pin (11), the nozzle plate (2) is provided with a fixing rod (12), the fixed die plate (3) is provided with a limiting screw (13), the fixed die plate (3) is installed with a power spring (14), and the upper side of the fixed die plate (3) is installed with a first pull fixing plate (15).

2. The pre-extraction mechanism for a deep cavity mold for household appliances according to claim 1, characterized in that: The exterior of the fixed die side fixed plate (1) is fixedly connected to the interior of the fixed die plate (3), and the inner wall of the square iron (5) is slidably connected to the exterior of the ejector plate (6).

3. The pre-extraction mechanism for a deep cavity mold of a household appliance according to claim 1, characterized in that: The interior of the first-draw fixed plate (15) is slidably connected to the exterior of the fixed mold core puller (10), and the interior of the first-draw fixed plate (15) is fixedly connected to the exterior of the nylon pin (11).

4. The pre-extraction mechanism for a deep cavity mold of a household appliance according to claim 1, characterized in that: The interior of the first-draw fixing plate (15) is threadedly connected to the exterior of the power spring (14).

5. The pre-extraction mechanism for a deep cavity mold of a household appliance according to claim 1, characterized in that: The internal thread of the fixed mold side fixing plate (1) is connected with a fixing rod screw (16), and the internal thread of the first-drawing fixing plate (15) is connected with a fixed mold core-pulling screw (17).

6. The pre-extraction mechanism for a deep cavity mold of a household appliance according to claim 5, characterized in that: The outer portion of the fixing rod screw (16) is threadedly connected to the inner portion of the fixing rod (12), and the inner portion of the fixed mold core-pulling device (10) is threadedly connected to the outer portion of the fixed mold core-pulling screw (17).

7. The pre-extraction mechanism for a deep cavity mold of a household appliance according to claim 1, characterized in that: The internal thread of the fixed die plate (3) is connected to the fixed die core screw (18), and the internal thread of the movable die plate (4) is connected to the movable die core screw (19).

8. The pre-extraction mechanism for a deep cavity mold of a household appliance according to claim 7, characterized in that: The interior of the fixed mold core (8) is connected to the exterior of the fixed mold core screw (18) by threaded connection, and the interior of the movable mold core (9) is connected to the exterior of the movable mold core screw (19) by threaded connection.

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