Lampshade injection mold

Abstract

The utility model provides a lampshade injection mold which comprises a fixed mold, a connecting rod ejection mechanism, a movable mold, a cooling pipe orifice and cooling cavities, the connecting rod ejection mechanism is installed on the fixed mold and the movable mold, and the cooling cavities are formed in the fixed mold and the movable mold. The cooling cavity is communicated with the cooling pipe orifices mounted on the fixed mold and the movable mold; the connecting rod ejection mechanism is innovatively introduced, spring ejection is abandoned, the lampshade is stably ejected out through the movable mold power source, and the service life of the mold is prolonged. Meanwhile, the spiral flat cavity type cooling cavity design is adopted, the cooling area is increased, the cooling effect is improved, impurity accumulation is reduced through spiral flowing, the blocking risk is reduced, the maintenance cost is reduced, and the stability and reliability of the mold are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lampshade moulds, in particular to a lampshade injection mould. Background Art

[0002] Lampshades play multiple roles in the home. They are not only used to focus the light, but also serve as an important safety barrier, effectively preventing the risk of electric shock and providing necessary protection for the eyes. Therefore, lampshades have become an indispensable part of household lamps. In the production process of lampshades, modern technology usually adopts one-piece injection molding process to ensure the manufacturing efficiency and quality of lampshades.

[0003] The current design of the ejector mechanism in the lampshade injection mold still faces some challenges. The traditional mold ejector mechanism usually relies on the elastic force of the spring element to eject the molded lampshade. However, with the long-term use and wear of the spring, its elastic force will gradually weaken, making it difficult to effectively eject the lampshade. As a result, manufacturers have to regularly check and replace the spring element to ensure the continuity of production.

[0004] In addition, the cooling cavity design of traditional molds also has some limitations. Since the cooling cavity is usually designed with a circular cavity, this structure easily causes blockage of the cooling medium during the flow process, affecting the cooling effect. In order to maintain the normal operation of the mold and extend its service life, manufacturers need to clean and maintain the cooling cavity regularly, which undoubtedly increases production costs and workload.

[0005] Therefore, it is very necessary to invent a lampshade injection mold. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a lampshade injection mold, comprising a fixed mold, a connecting rod ejection mechanism, a movable mold, a cooling nozzle and a cooling cavity, wherein the connecting rod ejection mechanism is installed on the fixed mold and the movable mold, and the cooling cavity is arranged inside the fixed mold and the movable mold, and the cooling cavity is connected with the cooling nozzle installed on the fixed mold and the movable mold;

[0007] The connecting rod ejection mechanism includes a movable chassis, a side plate, an adapter, a transmission connecting rod, a positioning pin and an ejection pin. The movable chassis is slidably mounted on the pin body of the fixed mold, the side plates are fixedly mounted on both sides of the movable chassis, and the adapters are rotatably mounted on the side plates and the fixed mold; the two adapters are connected by two transmission connecting rods; the two transmission connecting rods are rotatably connected together; the positioning pin and the ejection pin are fixedly mounted on the movable chassis.

[0008] Preferably, the cooling cavities provided inside the fixed mold and the movable mold are spiral flat cavity types, and the cooling cavities are located around the mold cavity formed by the fixed mold and the movable mold.

[0009] Preferably, the movable chassis is a rectangular structure, the positioning pins are fixedly installed at the four corners of the movable chassis, and a plurality of ejector pins are fixedly installed in the middle position, both the positioning pins and the ejector pins can slide through the fixed mold, and the ejector pins are located in the mold cavity position of the fixed mold.

[0010] Preferably, the adapter is a rectangular structure, and two groups of adapters and transmission connecting rods are provided, two in one group, one end of the transmission connecting rod is fixedly connected to the adapter, and the other end thereof is rotatably connected to another adapter.

[0011] Preferably, the side plate is a rectangular plate structure, and the side plate movably passes through the bottom side plate of the fixed mold, and the bottom side plate of the fixed mold is provided with a sliding groove allowing the side plate to slide up and down.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model innovatively introduces a connecting rod ejection mechanism in the design of the lampshade injection mold. This breakthrough design completely abandons the traditional technology of relying on spring elements for ejection. By cleverly utilizing the power source of the movable mold, the connecting rod ejection mechanism can stably and reliably complete the ejection of the molded lampshade, ensuring that the ejection mechanism is in good working condition for a long time. Compared with traditional technology, since the spring structure is abandoned, this design not only avoids the trouble of regular replacement due to the weakening of the elastic force of the spring due to long-term use, but also significantly improves the service life of the entire mold.

[0014] In addition, the utility model also adopts a special spiral flat cavity design as the cooling cavity. This design not only increases the cooling area, thereby significantly enhancing the cooling effect, ensuring that the mold maintains a low temperature while producing efficiently. More importantly, the spiral flat cavity design allows the coolant (or cooling medium) to form a spiral flow in the cavity. This flow pattern helps to remove impurities or dirt in the cavity, greatly reducing the risk of cooling cavity blockage. This not only reduces the maintenance workload, but also further improves the stability and reliability of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the connecting rod ejection mechanism of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the cooling chamber of the utility model.

[0018] In the figure:

[0019] Fixed mold 1, connecting rod ejection mechanism 2, movable chassis 21, side plate 22, adapter 23, transmission connecting rod 24, positioning pin 25, ejection pin 26, movable mold 3, cooling nozzle 4, cooling cavity 5. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0021] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0022] As attached Figure 1 To Attachment Figure 3 As shown:

[0023] The utility model provides a lampshade injection mold, comprising a fixed mold 1, a connecting rod ejection mechanism 2, a movable mold 3, a cooling nozzle 4 and a cooling cavity 5, wherein the connecting rod ejection mechanism 2 is installed on the fixed mold 1 and the movable mold 3, and the cooling cavity 5 is arranged inside the fixed mold 1 and the movable mold 3, and the cooling cavity 5 is communicated with the cooling nozzle 4 installed on the fixed mold 1 and the movable mold 3.

[0024] The connecting rod ejection mechanism 2 includes a movable chassis 21, a side plate 22, an adapter 23, a transmission connecting rod 24, a positioning pin 25 and an ejection pin 26. The movable chassis 21 is slidably mounted on the pin body of the fixed mold 1. The side plates 22 are fixedly mounted on both sides of the movable chassis 21. The adapters 23 are rotatably mounted on the side plates 22 and the fixed mold 1; the two adapters 23 are connected by two transmission connecting rods 24; the two transmission connecting rods 24 are rotatably connected together; the positioning pin 25 and the ejection pin 26 are fixedly mounted on the movable chassis 21. The connecting rod ejection mechanism 2 can stably and reliably complete the ejection work of the molded lampshade by cleverly utilizing the power source of the movable mold, thereby ensuring that the ejection mechanism is in a good working condition for a long time.

[0025] Embodiment 1:

[0026] Specifically, the cooling cavity 5 provided inside the fixed mold 1 and the movable mold 3 is a spiral flat cavity type, which not only significantly increases the cooling area, thereby improving the cooling efficiency, and ensures that the mold maintains a low temperature during the injection molding process, but also helps to quickly form the product and ensure product quality. More importantly, this spiral flow design allows the coolant (or cooling medium) to form an orderly spiral flow in the cavity, thereby cooling the various parts of the mold more evenly. The characteristics of its spiral flow help to remove impurities or dirt in the cavity, reducing the risk of clogging the cooling cavity. This not only reduces the maintenance cost of the mold, but also improves the stability and reliability of the mold, ensuring the continuity and efficiency of production. The cooling cavity 5 is located around the mold cavity formed by the fixed mold 1 and the movable mold 3.

[0027] Specifically, the movable chassis 21 is a rectangular structure, and positioning pins 25 are fixedly installed at the four corners of the movable chassis 21. These positioning pins 25 ensure that the movable chassis 21 can be accurately aligned and stably move along a predetermined trajectory during the opening and closing of the mold. In addition, a number of ejector pins 26 are also fixedly installed in the middle position of the movable chassis 21. These additional ejector pins 26 further enhance the stability of the movable chassis and help maintain the accuracy of the mold. Both the positioning pins 25 and the ejector pins 26 can slide through the fixed mold 1. This design enables the ejector pins 26 to smoothly eject the molded lampshade when the mold is opened. Since the ejector pins 26 are located in the mold cavity of the fixed mold 1, they can directly contact the molded lampshade and effectively eject it from the mold.

[0028] Specifically, the adapter 23 is a rectangular structure. The adapter 23 and the transmission connecting rod 24 are provided in two groups, two in one group. One end of the transmission connecting rod 24 is fixedly connected to the adapter 23, and the other end thereof is rotatably connected to another adapter 23.

[0029] Specifically, the side plate 22 is a rectangular plate structure, and the side plate 22 movably passes through the bottom side plate of the fixed mold 1 . The bottom side plate of the fixed mold 1 is provided with a sliding groove that allows the side plate 22 to slide up and down.

[0030] Embodiment 2:

[0031] First, the cooling pipe openings 4 of the fixed mold 1 and the movable mold 3 are connected to the external cooling pipe, and the movable mold 3 is driven by the power system to separate from the fixed mold 1, and the mold cavities of both are manually cleaned. After cleaning, the fixed mold 1 and the movable mold 3 are combined together, and the raw material enters the formed lamp mold cavity through the feed port of the movable mold 3, and the cooling medium enters the cooling cavity 5 through the cooling pipe opening 4. The cooling cavity 5 allows the coolant (or cooling medium) to form an orderly spiral flow in the cavity, thereby cooling various parts of the mold more evenly. The spiral flow characteristics help to remove impurities or dirt in the cavity, reducing the risk of clogging the cooling cavity. After the molding is completed, the movable mold 3 is driven by the power system to separate from the fixed mold 1. During this process, the fixed mold 1 is gradually straightened by the transmission connecting rod 24 of the adapter 23, and the transmission connecting rod 24 drives the movable chassis 21. The positioning pin 25 and the ejection pin 26 on the movable chassis 21 pass through the fixed mold 1, and the ejection pin 26 ejects the molded lampshade out. Subsequently, the ejection pin 26 is used to reset the connecting rod ejection mechanism 2.

[0032] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A lampshade injection mold, characterized in that: The invention comprises a fixed mold (1), a connecting rod ejection mechanism (2), a movable mold (3), a cooling nozzle (4) and a cooling cavity (5); the connecting rod ejection mechanism (2) is installed on the fixed mold (1) and the movable mold (3); the cooling cavity (5) is arranged inside the fixed mold (1) and the movable mold (3); the cooling cavity (5) is connected to the cooling nozzle (4) installed on the fixed mold (1) and the movable mold (3); The connecting rod ejection mechanism (2) comprises a movable chassis (21), a side plate (22), an adapter (23), a transmission connecting rod (24), a positioning pin (25) and an ejection pin (26); the movable chassis (21) is slidably mounted on a pin body of the fixed mold (1); the side plates (22) are fixedly mounted on both sides of the movable chassis (21); the adapter (23) is rotatably mounted on the side plates (22) and the fixed mold (1); the two adapters (23) are connected via two transmission connecting rods (24); the two transmission connecting rods (24) are rotatably connected together; the positioning pin (25) and the ejection pin (26) are fixedly mounted on the movable chassis (21).

2. A lampshade injection mold according to claim 1, characterized in that: The cooling cavity (5) arranged inside the fixed mold (1) and the movable mold (3) is a spiral flat cavity type, and the cooling cavity (5) is located around the mold cavity formed by the fixed mold (1) and the movable mold (3).

3. The lampshade injection mold according to claim 1, characterized in that: The movable chassis (21) is a rectangular structure. The positioning pins (25) are fixedly installed at the four corners of the movable chassis (21), and a plurality of ejector pins (26) are fixedly installed in the middle. Both the positioning pins (25) and the ejector pins (26) can slide through the fixed mold (1), and the ejector pins (26) are located at the mold cavity position of the fixed mold (1).

4. The lampshade injection mold according to claim 1, characterized in that: The adapter (23) is a rectangular structure. Two groups of adapters (23) and transmission connecting rods (24) are provided, with two forming one group. One end of the transmission connecting rod (24) is fixedly connected to the adapter (23), and the other end thereof is rotationally connected to another adapter (23).

5. The lampshade injection mold according to claim 1, characterized in that: The side plate (22) is a rectangular plate structure. The side plate (22) movably passes through the bottom side plate of the fixed mold (1). The bottom side plate of the fixed mold (1) is provided with a sliding groove that allows the side plate (22) to slide up and down.

Images