Injection molding device for axial flow fan blades

Abstract

The utility model relates to the field of axial flow fan blade injection moulding, especially a kind of injection molding device for axial flow fan blade, including upper die and lower die, upper die and lower die can be buckled and constitute the forming space of axial flow fan blade, upper die is equipped with the upper die core for the forming axial flow fan wheel hub, upper die core is located in forming space, upper die core is equipped with positioning shaft and at least one magnetic attraction piece on;Magnetic attraction piece is spaced apart with positioning shaft;Magnetic attraction piece can be adsorbed to the gasket of iron material, so that gasket can be adsorbed and positioned on upper die core in mould, so as to avoid the process of opening mould and closing mould, gasket falls, reduces the scrap in the injection molding process of axial flow fan blade, so as to ensure the qualified rate of product;Avoid gasket to fall into mould forming space, cause injection molding device failure problem, so as to reduce injection molding device maintenance cost, improve the service life of injection molding device, reduce enterprise production operating cost, improve the overall production efficiency of axial flow fan blade.

Description

Technical Field

[0001] This utility model relates to the field of injection molding of axial flow fan blades, and in particular to an injection molding device for axial flow fan blades. Background Technology

[0002] In the injection molding process of axial flow fan blades, the positioning pins set on the mold pass through the holes in the middle of the gasket, thereby limiting and fixing the gasket on the mold. After the axial flow fan blade is injection molded, the gasket is embedded in the designated position of the axial flow fan blade.

[0003] However, during the opening and closing of the injection mold, the gaskets may fall off, resulting in the production of defective axial flow fan blades without gaskets, which reduces the product qualification rate. The fallen gaskets also frequently fall into the mold cavity, causing mold failure and mold damage, which increases the frequency of mold maintenance. This increases mold maintenance costs and shortens the mold's lifespan. It not only consumes a lot of time and money, but also reduces the production efficiency of axial flow fan blades. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art in that the gasket is not firmly fixed during the injection molding of axial flow fan blades, and to provide an injection molding device for axial flow fan blades.

[0005] This utility model provides an injection molding device for axial flow fan blades, comprising: The upper mold and the lower mold can be engaged to form a forming space for an axial flow fan blade. The upper mold is provided with an upper mold core for forming an axial flow fan blade hub. The upper mold core is located within the forming space. The upper mold core is provided with a positioning shaft and at least one magnetic suction component. The magnetic suction element is spaced apart from the positioning shaft.

[0006] Preferably, there are three magnetic suction components, which are arranged in a ring around the positioning axis.

[0007] Preferably, the distance between the magnetic suction element and the positioning shaft is 0.5cm-5cm.

[0008] Preferably, the magnetic attractor includes a high-temperature resistant magnet.

[0009] Preferably, the magnetic suction element is nested within the upper mold core.

[0010] Preferably, the magnetic component includes a bolt and a magnet, the bolt passes through the magnet, the bolt is detachably connected to the upper mold core, and the top of the magnet is flush with the top plane of the upper mold core.

[0011] Preferably, the upper mold core is located in the middle of the forming space, and the positioning shaft can abut against the lower mold.

[0012] Preferably, the upper mold core is cylindrical, and the positioning shaft is located at the top of the upper mold core, and the positioning shaft is coaxially arranged with the upper mold core.

[0013] Preferably, the upper mold is provided with a plurality of positioning grooves, and the lower mold is provided with a plurality of positioning elements adapted to the positioning grooves, wherein the positioning elements can be adapted to and connected to the positioning grooves.

[0014] Preferably, the lower mold is provided with a precision positioning component, which is detachably connected to the upper mold.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention provides an injection molding device for axial flow fan blades. By adding a magnetic component to the top of the upper mold core of the upper mold of the axial flow fan blade, the magnetic component can attract iron gaskets, thereby positioning the gaskets on the upper mold core within the mold. This prevents the gaskets from falling off during mold opening and closing, reducing scrap during the injection molding process of axial flow fan blades and ensuring the product qualification rate. It also prevents the gaskets from falling into the mold forming space and causing injection molding device malfunctions, thereby reducing injection molding device maintenance costs, increasing the service life of the injection molding device, reducing enterprise production and operating costs, and improving the overall production efficiency of axial flow fan blades. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of an injection molding device for axial flow fan blades according to the present invention. Figure 2 This is a schematic diagram of the upper mold of an injection molding device for axial flow fan blades according to the present invention; Figure 3 This is a schematic diagram of the lower mold structure of an injection molding device for axial flow fan blades according to the present invention; Figure 4 This is a schematic diagram of the upper mold core of an injection molding device for axial flow fan blades according to the present invention.

[0017] Marked in the image: 1-Upper mold, 2-Lower mold, 3-Injection port, 4-Forming space, 5-Upper mold core, 51-Positioning shaft, 53-Magnetic suction part, 531-Bolt, 532-Magnetic part, 6-Positioning groove, 7-Positioning part, 8-Precision positioning part, 9-Wear-resistant block, 10-Groove part, 11-Lower mold core. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0019] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0021] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0022] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0023] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0024] Example 1 like Figures 1-4 As shown, an injection molding device for axial flow fan blades is specifically composed of an upper mold 1 and a lower mold 2. The upper mold 1 and the lower mold 2 can be fastened to form a molding space 4 for the axial flow fan blade. The upper mold 1 is provided with an upper mold core 5 for molding the axial flow fan blade hub. The upper mold core 5 is located in the molding space 4. The upper mold core 5 is provided with a positioning shaft 51 and at least one magnetic suction component 53. The magnetic suction component 53 can attract iron pads. The magnetic suction component 53 is spaced apart from the positioning shaft 51.

[0025] By adding a magnetic suction component 53 to the top of the upper mold core 5 of the upper mold 1 of the axial fan blade, the magnetic suction component 53 can attract the iron gasket, so that the gasket can be attracted and positioned on the upper mold core 5 within the mold. This prevents the gasket from falling off during the mold opening and closing process, reduces scrap during the injection molding of the axial fan blade, and ensures the product qualification rate. It also prevents the gasket from falling into the mold forming space 4 and causing injection equipment failure, thereby reducing the maintenance cost of the injection equipment, increasing the service life of the injection equipment, reducing the company's production and operating costs, and improving the overall production efficiency of the axial fan blade.

[0026] Specifically, both the upper mold 1 and the lower mold 2 are rectangular molds. The upper mold 1 has an injection port 3 at its top, which is connected to the molding space 4. During the injection molding operation, molding material is injected into the molding space 4 from the injection port 3, so that the molding material is injection molded in the molding space 4 to form an axial flow fan blade. The upper mold core 5 on the upper mold 1 is connected to the lower mold core 11 on the lower mold 2.

[0027] In one or more embodiments, three magnetic suction components 53 are provided, and the three magnetic suction components 53 are arranged in a ring around the positioning shaft 51. The three magnetic suction components 53 simultaneously attract an iron ring-shaped gasket. Correspondingly, the positions of the three magnetic suction components 53 on the upper mold core 5 are set according to the required position of the gasket on the injection-molded axial flow fan blade gasket. The three magnetic suction components 53 are arranged in a ring around the center of the upper mold core 5, which makes the manufactured axial flow fan blade more adaptable and facilitates the installation and use of the axial flow fan blade on different equipment.

[0028] In optional embodiments, the distance between the magnetic suction component 53 and the positioning shaft 51 is 0.5cm-5cm; the magnetic suction component 53 needs to have a certain distance reserved between it and the positioning shaft 51 to facilitate the installation of the gasket. In some embodiments, the edge of the magnetic suction component 53 is 0.5cm from the edge of the positioning shaft 51; in some embodiments, the distance between the edge of the positioning shaft 51 and the edge of the magnetic suction component 53 is 5cm. The size of the distance between the magnetic suction component 53 and the positioning shaft 51 needs to be set according to the distance between the gasket and the central shaft hole in the specific axial flow fan product.

[0029] In one or more embodiments, the magnetic attractor 53 includes a high-temperature resistant magnet. Since the magnetism of ordinary magnets changes under high-temperature conditions, a high-temperature resistant magnet is a better choice under high-temperature injection molding conditions. The high-temperature resistant magnet is preferably a samarium cobalt magnet, which has excellent magnetic properties, can work reliably over a wide temperature range, and has the ability to resist demagnetization and corrosion. Its working temperature can reach 300 to 350°C. In terms of the selection of the attraction force, it can be ensured that the gasket is difficult to fall off when the upper mold 1 and the lower mold 2 are moving, and that the gasket cannot detach from the axial flow fan blades when the mold is disassembled.

[0030] In one or more embodiments, the upper mold core 5 is cylindrical, the positioning shaft 51 is located at the top of the upper mold core 5, the positioning shaft 51 is coaxially arranged with the upper mold core 5, and the magnetic suction component 53 is nested in the upper mold core 5; the magnetic suction component 53 is embedded in the top plane of the upper mold core 5 to avoid the magnetic suction component 53 affecting the injection molding shape of the molding space 4 and to ensure the molding quality of the axial flow fan blade. In an optional embodiment, the magnetic attractor 53 includes a bolt 531 and a magnet 532. The bolt 531 passes through the magnet 532 and is detachably connected to the upper mold core 5. The top of the magnet 532 is flush with the top plane of the upper mold core 5. The magnetic attractor 53 is a ring magnet. The bolt 531 passes through the central channel of the ring magnet. A groove adapted to the ring magnet is provided on the top plane of the upper mold core 5. After the bolt 531 fixes the ring magnet, the ring magnet is embedded in the groove. The ring magnet is flush with the top plane of the upper mold core 5, which can better attract the gasket. The bolt 531 passes through the gasket and can position the gasket, so that the gasket can be fixed on the axial flow fan blade in an accurate position.

[0031] In an optional embodiment, the top of the annular magnet is 0.3 mm away from the top plane of the upper mold core 5, the annular magnet is inserted into the upper mold core 5, and the annular magnet does not protrude from the top plane of the upper mold core 5.

[0032] In one or more embodiments, the upper mold core 5 is located in the middle of the forming space 4, and the positioning shaft 51 can abut against the lower mold 2; the positioning shaft 51 can form a central shaft hole on the axial flow fan blade.

[0033] In one or more embodiments, the upper mold 1 is provided with four positioning grooves 6, and the lower mold 2 is provided with a plurality of positioning elements 7 adapted to the positioning grooves 6. The positioning elements 7 can be adapted to and connected with the positioning grooves 6. Through the adaptation and connection of the positioning grooves 6 on the upper mold 1 and the positioning elements 7 on the lower mold 2, the combination of multiple sets of positioning elements 7 and positioning grooves 6 can enable the upper mold 1 and the lower mold 2 to form the forming space 4 with accurate precision after being fastened together, thereby ensuring the accuracy of axial flow fan blade forming. The positioning grooves 6 are cylindrical grooves distributed on the four corners of the upper mold 1, and the positioning elements 7 also include cylindrical elements distributed on the four corners of the lower mold 2. The cylindrical grooves and cylindrical elements are adapted to and connected.

[0034] Specifically, eight rectangular wear-resistant blocks 9 are distributed around the molding space 4 of the upper mold 1, and eight rectangular wear-resistant blocks 9 are distributed around the molding space 4 of the lower mold 2. The wear-resistant blocks 9 of the upper mold 1 abut against the wear-resistant blocks 9 of the lower mold 2.

[0035] In one or more embodiments, the lower mold 2 is provided with a precision positioning component 8, which is detachably connected to the upper mold 1. To ensure a good connection between the upper mold 1 and the lower mold 2, precision positioning components 8 are respectively provided on opposite sides of the lower mold 2. The precision positioning components 8 are connected to the grooves 10 on the upper mold 1 to achieve accurate positioning of the upper mold 1 and the lower mold 2, thereby avoiding positional shift of the upper mold 1 and the lower mold 2 during the injection molding process. In an optional embodiment, precision positioning components 8 are provided on all four sides of the lower mold 2, and grooves 10 are provided on all four sides of the upper mold 1.

[0036] This embodiment describes an injection molding device for axial flow fan blades. In use, the upper mold 1 and the lower mold 2 are separated. A corresponding pad is adsorbed onto the magnetic suction component 53 of the upper mold 1. Then, the positioning groove 6 and the positioning component 7 are aligned, and the upper mold 1 and the lower mold 2 are connected by the precision positioning component 8, so that the upper mold 1 and the lower mold 2 are closed. Molding material is injected into the molding space 4 from the injection port 3, so that the axial flow fan blade is formed in the molding space 4. Finally, the upper mold 1 and the lower mold 2 are separated and demolded, and the molded axial flow fan blade is taken out.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An injection molding device for axial flow fan blades, characterized in that, include: The upper mold (1) and the lower mold (2) are able to be engaged to form a forming space (4) for an axial flow fan blade. The upper mold (1) is provided with an upper mold core (5) for forming an axial flow fan blade hub. The upper mold core (5) is located in the forming space (4). The upper mold core (5) is provided with a positioning shaft (51) and at least one magnetic suction element (53). The magnetic suction element (53) is spaced apart from the positioning shaft (51).

2. The injection molding device for axial flow fan blades according to claim 1, characterized in that, The magnetic attractor (53) is configured as three, and the three magnetic attractors (53) are arranged in a ring around the positioning axis (51).

3. The injection molding device for axial flow fan blades according to claim 2, characterized in that, The distance between the magnetic suction component (53) and the positioning shaft (51) is 0.5cm-5cm.

4. The injection molding device for axial flow fan blades according to claim 1, characterized in that, The magnetic attractor (53) includes a high-temperature resistant magnet.

5. The injection molding device for axial flow fan blades according to claim 1, characterized in that, The magnetic suction element (53) is nested in the upper mold core (5).

6. The injection molding device for axial flow fan blades according to claim 5, characterized in that, The magnetic component (53) includes a bolt (531) and a magnet (532). The bolt (531) passes through the magnet (532). The bolt (531) is detachably connected to the upper mold core (5). The top of the magnet (532) is flush with the top plane of the upper mold core (5).

7. The injection molding device for axial flow fan blades according to claim 1, characterized in that, The upper mold core (5) is located in the middle of the forming space (4), and the positioning shaft (51) can abut against the lower mold (2).

8. The injection molding device for axial flow fan blades according to claim 7, characterized in that, The upper mold core (5) is cylindrical, and the positioning shaft (51) is located at the top of the upper mold core (5). The positioning shaft (51) is coaxially arranged with the upper mold core (5).

9. An injection molding device for axial flow fan blades according to claim 1, characterized in that, The upper mold (1) is provided with a plurality of positioning grooves (6), and the lower mold (2) is provided with a plurality of positioning elements (7) that are adapted to the positioning grooves (6). The positioning elements (7) can be adapted to and connected to the positioning grooves (6).

10. An injection molding device for axial flow fan blades according to any one of claims 1-9, characterized in that, The lower mold (2) is provided with a precision positioning component (8), which is detachably connected to the upper mold (1).

Images