Compression forming die structure for axial flow fan blade production

Abstract

The utility model discloses a compression molding die structure for producing an axial flow fan blade, which comprises a lower fixed die and an upper movable die, the lower fixed die is matched with the upper movable die, the upper end face of the lower fixed die is provided with a fan-shaped groove, the fan-shaped groove corresponds to a cut blade plate, the fan-shaped groove is internally provided with an arc surface groove, and the arc surface groove is matched with the arc surface groove. The arc surface of the bottom of the arc surface groove corresponds to the arc surface of the finished blade, and an extrusion protruding block is arranged on the lower end face of the upper movable die and matched with the arc surface groove. According to the utility model, the axial flow fan blades are processed in a die pressing mode, and the radians of the produced blades are consistent due to the adoption of a pressing forming mode, so that the performance of the axial flow fan is improved; in the pressing and forming process, reinforcing grooves are formed in the blades in a pressing mode through the pressing protruding strips and the pressing grooves, and the strength of the blades is further improved through the reinforcing grooves under the condition that the materials and the thicknesses of the plates are inconvenient.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fan production equipment, in particular to a pressing and forming die structure for producing axial flow fan blades. Background Art

[0002] Axial fans have a wide range of uses. The performance of the blades of an axial fan determines the wind force of the fan, and the blade performance mainly includes accuracy and strength. Since the shape of the blade is an arc surface, the blade is usually roll-formed by a roller machine on the cut plate. The error between the axial fan blade products produced by this method is large. After installation, the differences between the blades are large, which affects the performance of the axial fan. In addition, the strength of the blade depends on the material and thickness of the plate, which limits the strength of the blade. Summary of the Invention

[0003] The purpose of the present utility model is to provide a pressing mold structure for producing axial flow fan blades, so as to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pressing mold structure for producing axial fan blades, comprising: a lower fixed mold and an upper movable mold, the lower fixed mold and the upper movable mold matching each other, the upper end face of the lower fixed mold having a fan-shaped groove, the fan-shaped groove corresponding to the cut blade plate, the fan-shaped groove having a circular arc groove, the bottom circular arc surface of the circular arc groove corresponding to the circular arc surface of the finished blade, the lower end face of the upper movable mold being provided with an extrusion protrusion, the extrusion protrusion matching the circular arc groove.

[0005] Furthermore, a pressing convex strip is provided on the surface of the extruded protrusion, and a pressing groove is provided at the bottom of the arc surface groove, and the pressing groove matches the pressing convex strip.

[0006] Furthermore, the pressed grooves and pressed ridges are provided in at least one group.

[0007] Furthermore, the lower fixed mold and the upper movable mold are connected by at least two guide columns.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] 1. The utility model discloses a pressing mold structure for producing axial flow fan blades. The axial flow fan blades are processed by pressing the mold. Due to the pressing molding method, the curvature of the produced blades is consistent, thereby improving the performance of the axial flow fan.

[0010] 2. The utility model is a pressing mold structure for producing axial flow fan blades. During the pressing process, the pressing ridges and pressing grooves will press out reinforcement grooves on the blades. The reinforcement grooves further increase the strength of the blades when the material and thickness of the plate are inconvenient.

[0011] The utility model has the advantages of simple structure, convenient use, good use effect, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the upper movable mold structure of the utility model;

[0014] In the figure: 1- lower fixed mold; 2- upper movable mold; 3- fan-shaped groove; 4- arc surface groove; 5- extrusion convex block; 6- pressed convex strip; 7- pressed groove; 8- guide column. DETAILED DESCRIPTION

[0015] 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.

[0016] See also Figure 1 、 2 The utility model provides a pressing mold structure for producing axial fan blades, including: a lower fixed mold 1 and an upper movable mold 2, the lower fixed mold 1 and the upper movable mold 2 match each other, the upper end surface of the lower fixed mold 1 is provided with a fan-shaped groove 3, the fan-shaped groove 3 corresponds to the cut blade plate, and a circular arc groove 4 is provided in the fan-shaped groove 3, the bottom circular arc surface of the circular arc groove 4 corresponds to the circular arc surface of the finished blade, and the lower end surface of the upper movable mold 2 is provided with an extrusion protrusion 5, and the extrusion protrusion 5 matches the circular arc groove 4.

[0017] The axial flow fan blades are processed by mold pressing. Due to the use of the pressing molding method, the curvature of the produced blades is consistent, thereby improving the performance of the axial flow fan. During specific use, the cut blade plate is first placed in the fan-shaped groove 3. Under the action of the power mechanism, the lower fixed mold 1 and the upper movable mold 2 squeeze each other, and the blade plate gradually bends and sinks into the arc surface groove 4 until the flat blade plate is squeezed into a circular arc surface.

[0018] Furthermore, a pressing ridge 6 is provided on the surface of the extruded protrusion 5 , and a pressing groove 7 is provided at the bottom of the arc surface groove 4 , and the pressing groove 7 matches the pressing ridge 6 .

[0019] During the pressing process, the pressing ridges 6 and the pressing grooves 7 will press out reinforcement grooves on the blades. The reinforcement grooves further increase the strength of the blades when the material and thickness of the plate are inconvenient.

[0020] Furthermore, at least one group of the pressing grooves 7 and the pressing ridges 6 is provided. The strength of the blade is increased by providing a plurality of reinforcing grooves.

[0021] Furthermore, the lower fixed mold 1 and the upper movable mold 2 are connected by at least two guide columns 8. The guide columns 8 guide the lower fixed mold 1 and the upper movable mold 2.

[0022] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressing mold structure for producing axial flow fan blades, characterized in that: include: A lower fixed mold (1) and an upper movable mold (2) are matched with each other. A fan-shaped groove (3) is provided on the upper end surface of the lower fixed mold (1). The fan-shaped groove (3) corresponds to the cut blade plate. An arc surface groove (4) is provided in the fan-shaped groove (3). The arc surface of the bottom of the arc surface groove (4) corresponds to the arc surface of the finished blade. An extrusion protrusion (5) is provided on the lower end surface of the upper movable mold (2). The extrusion protrusion (5) matches the arc surface groove (4).

2. A pressing mold structure for producing axial flow fan blades according to claim 1, characterized in that: The surface of the extruded protrusion (5) is provided with a pressed convex strip (6), and the bottom of the arc surface groove (4) is provided with a pressed groove (7), and the pressed groove (7) matches the pressed convex strip (6).

3. The pressing mold structure for producing axial flow fan blades according to claim 1, characterized in that: The pressing groove (7) and the pressing ridge (6) are provided in at least one group.

4. The pressing mold structure for producing axial flow fan blades according to claim 1, characterized in that: The lower fixed mold (1) and the upper movable mold (2) are connected via at least two guide columns (8).

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