Die-casting die for centrifugal fan impeller

Abstract

The utility model relates to the technical field of die-casting dies, in particular to a centrifugal fan impeller die-casting die which comprises a bottom plate, a sliding rail and a hydraulic rod, a lower die plate is installed on one side of the upper end face of the bottom plate, the sliding rail of a circular array distribution area is installed on the outer wall of the upper end of the bottom plate, and a sliding block is installed in the sliding rail in a sliding mode. An inserting block is arranged on the outer wall of the upper end of the sliding block, a first fixing plate is installed on the outer wall of the upper end of the sliding block, a second fixing plate is installed on one side of the outer wall of the lower end of the inserting block, a connecting block is installed on the outer wall of one end of the inserting block, and an embedding groove is formed in the outer wall of one side of the connecting block; hydraulic rods distributed in a circular array mode are installed on the outer wall of the upper end of the bottom plate, an embedding block is installed on the outer wall of one end of each hydraulic rod, whether residual materials adhere to the surfaces of the inserting blocks or not can be judged, workers are helped to maintain the inserting blocks in time, the situation that the forming shape of a workpiece is affected by the residual materials is avoided, and the forming quality of the workpiece is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting molds, and particularly relates to a die-casting mold for a centrifugal fan impeller. Background Art

[0002] The centrifugal fan impeller is a key component for realizing gas energy conversion in a centrifugal fan. The die-casting mold for the fan impeller is a precision tool specifically used for producing the fan impeller. Its design aims to inject molten metal into the mold under high pressure, quickly cool and solidify to form the impeller. The die-casting mold mainly consists of a fixed mold and a movable mold. The fixed mold is fixed on the fixed mold mounting plate of the die-casting machine and is connected to the sprue and the nozzle or the pressure chamber; the movable mold is fixed on the movable mold mounting plate of the die-casting machine, moves with the opening and closing of the mounting plate, and forms a cavity and a casting system when closed during mold clamping.

[0003] Although the die-casting molds in the prior art have many advantages, there are still the following problems. They cannot detect the residual materials adhered to the surface of the insertion block. During die-casting, the molten metal fills the mold cavity under high pressure and quickly solidifies to form a casting. Since the metal is in close contact with the inner wall of the mold, inevitably, a part of the metal adheres to the inner wall of the mold in the form of fine particles or thin layers. Therefore, when the insertion block directly undergoes the next processing, the residual materials will affect the forming shape of the workpiece and the forming quality of the workpiece. Summary of the Utility Model

[0004] Aiming at the problems in the prior art, the utility model provides a die-casting mold for a centrifugal fan impeller.

[0005] The technical solution adopted by the utility model to solve its technical problems is a die-casting mold for a centrifugal fan impeller, which includes a bottom plate, a slide rail and a hydraulic rod. On one side of the upper end surface of the bottom plate, a lower template is installed. On the outer wall of the upper end of the bottom plate, a circular array distribution area of slide rails is installed. Inside the slide rails, sliders are slidably installed. On the outer wall of the upper end of the sliders, insertion blocks are arranged. On the outer wall of the upper end of the sliders, a first fixing plate is installed. On one side of the outer wall of the lower end of the insertion block, a second fixing plate is installed. On one end of the outer wall of the insertion block, a connecting block is installed. On one side of the outer wall of the connecting block, a fitting groove is opened. On the outer wall of the upper end of the bottom plate, circularly arrayed hydraulic rods are installed. On one end of the outer wall of the hydraulic rods, fitting blocks are installed.

[0006] By adopting the above technical solution, the hydraulic rod can drive the insertion block to move horizontally, and the insertion block maintains the stability of the moving track through the slider and the slide rail, so that the insertion block and the lower template form a mold cavity, thereby being able to cooperate with external equipment for die-casting processing.

[0007] Specifically, a positioning post is installed at the center of the outer wall of the upper end of the lower template, and circularly-arrayed extrusion frame plates are installed on the outer wall of the upper end of the lower template. The extrusion frame plates and the insertion blocks are distributed in a cross shape.

[0008] By adopting the above technical solution, the combination of the extrusion frame plates and the insertion blocks forms a mold cavity in cooperation with the lower template, so as to be able to cooperate with the fixed mold for die-casting operations, and the positioning post provides space for the installation holes of the formed impeller workpieces.

[0009] Specifically, one side outer wall of the insertion block is designed in an inclined shape, and the insertion block is located at the upper end of the lower template.

[0010] By adopting the above technical solution, the insertion block is in contact with the upper end surface of the lower template to maintain sealing performance.

[0011] Specifically, bolts are provided on both outer walls of the first fixing plate and the second fixing plate, and the first fixing plate and the second fixing plate are connected by bolts.

[0012] By adopting the above technical solution, the bolts connect the first fixing plate and the second fixing plate to maintain the position stability of the insertion block at the upper end of the fitting block.

[0013] Specifically, placing grooves are formed on the opposite outer walls of the first fixing plate and the second fixing plate, and pressure sensors are arranged inside the placing grooves.

[0014] By adopting the above technical solution, the placing grooves accommodate the pressure sensors, and the pressure sensors can detect the total weight of the second fixing plate and the insertion block without being affected by the bolts.

[0015] Specifically, both the inner wall of the fitting groove and the outer wall of the fitting block are designed in a rectangular shape. The size of the fitting block is smaller than the inner wall size of the fitting groove, and the fitting block is located inside the fitting groove.

[0016] By adopting the above technical solution, the fitting block and the fitting groove limit the combined position of the hydraulic rod and the insertion block to ensure the connection tightness between the hydraulic rod and the insertion block.

[0017] Specifically, an electromagnet is embedded and installed on one end outer wall of the fitting block, and the electromagnet is in contact with the inner wall of the fitting groove.

[0018] By adopting the above technical solution, the magnetic force of the electromagnet adsorbs the connection block to maintain the connection stability between the hydraulic rod and the insertion block.

[0019] The beneficial effects of the present utility model:

[0020] (1) The utility model discloses a centrifugal fan impeller die-casting mold, in which the engaging block and the connecting block are connected by the magnetic force of the electromagnet, and the linkage between the hydraulic rod and the plug-in block is maintained. The hydraulic rod drives the plug-in block to move horizontally to the upper end of the lower mold plate, thereby cooperating with the extrusion frame plate to form a mold cavity. The external movable mold can cooperate with the mold cavity for die-casting operations, and the adsorption connection of the electromagnet ensures that the plug-in block is easy to disassemble and maintain, thereby improving the maintenance efficiency of the plug-in block.

[0021] (2) In the die-casting mold of a centrifugal fan impeller described in the utility model, after the plug-in block is driven to retract by the hydraulic rod, the plug-in block keeps the moving trajectory controlled by the slide rail and the slider, and after the plug-in block moves to the moving limit of the slide rail, the electromagnet is powered off, and the hydraulic rod drives the interlocking block to continue to retract until the interlocking block is disengaged from the inside of the interlocking groove, so that the plug-in block is disconnected from the outside world. The pressure sensor detects the total weight of the plug-in block, so as to determine whether the plug-in block is damaged and whether there is residual material adhering to the surface of the plug-in block, thereby helping the staff to maintain the plug-in block in time to avoid the residual material from affecting the forming shape of the workpiece, thereby ensuring the forming quality of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the appearance of the bottom plate structure of the utility model;

[0024] Figure 2 It is an enlarged schematic diagram of the slide rail structure of the utility model;

[0025] Figure 3 It is a partial cross-sectional schematic diagram of the plug-in block structure of the utility model;

[0026] Figure 4 It is a partial cross-sectional schematic diagram of the slide rail structure of the utility model;

[0027] Figure 5 It is an enlarged schematic diagram of the slider structure of the utility model.

[0028] In the figure: 1, bottom plate; 11, extrusion frame plate; 12, lower template; 13, positioning column; 2, slide rail; 21, slider; 22, plug-in block; 23, first fixed plate; 24, second fixed plate; 25, bolt; 26, pressure sensor; 27, connecting block; 28, fitting groove; 3, hydraulic rod; 31, fitting block; 32, electromagnet. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] In order to save manpower and improve efficiency, as an embodiment of the present utility model, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a die-casting mold for a centrifugal fan impeller described in the utility model comprises a base plate 1, a slide rail 2 and a hydraulic rod 3, a lower mold plate 12 is installed on one side of the upper end surface of the base plate 1, a slide rail 2 with a circular array distribution area is installed on the upper outer wall of the base plate 1, a slider 21 is slidably installed inside the slide rail 2, a plug-in block 22 is arranged on the upper outer wall of the slider 21, a first fixed plate 23 is installed on the upper outer wall of the slider 21, a second fixed plate 24 is installed on one side of the lower outer wall of the plug-in block 22, a connecting block 27 is installed on the outer wall of one end of the plug-in block 22, an outer wall on one side of the connecting block 27 is provided with an engaging groove 28, a hydraulic rod 3 distributed in a circular array is installed on the upper outer wall of the base plate 1, and an engaging block 31 is installed on the outer wall of one end of the hydraulic rod 3.

[0031] When in use, the hydraulic rod 3 can drive the plug-in block 22 to move horizontally, and the plug-in block 22 maintains the stability of the moving trajectory through the slider 21 and the slide rail 2, so that the plug-in block 22 and the lower mold plate 12 form a mold cavity, thereby being able to cooperate with external equipment for die-casting processing.

[0032] To form a mold cavity, for example, Figure 1 As shown, a positioning column 13 is installed at the center of the outer wall of the upper end of the lower template 12, and the outer wall of the upper end of the lower template 12 is installed with extruded frame plates 11 distributed in a circular array, and the extruded frame plates 11 and the plug-in blocks 22 are arranged in a cross shape.

[0033] When in use, the combination between the extrusion frame plate 11 and the plug-in block 22 cooperates with the lower template 12 to form a mold cavity, so that it can cooperate with the fixed mold for die-casting operations, and the positioning column 13 provides space for the mounting hole of the molded impeller workpiece. A sealing gasket is provided on the outer wall on the opposite side of the extrusion frame plate 11 and the plug-in block 22 to maintain the sealing between the extrusion frame plate 11 and the plug-in block 22.

[0034] In order to control the blade forming shape, for example, Figure 2 As shown, the outer wall of one side of the plug-in block 22 is designed in an inclined shape, and the plug-in block 22 is located at the upper end of the lower template 12;

[0035] When in use, the plug-in blocks 22 are in contact with the upper end surface of the lower template 12 to maintain sealing, and there is a gap between each plug-in block 22, which is the blade molding gap of the impeller.

[0036] In order to ensure the stability of the plug block 22, for example, Figure 4 As shown, bolts 25 are provided on both sides of the outer walls of the first fixing plate 23 and the second fixing plate 24, and the first fixing plate 23 and the second fixing plate 24 are connected by the bolts 25;

[0037] In use, the bolt 25 connects the first fixing plate 23 and the second fixing plate 24, maintaining the positional stability of the insertion block 22 at the upper end of the fitting block 31.

[0038] For detecting the insertion block 22, by way of example, as Figure 5 shown, placing grooves are provided on the outer walls of the opposite sides of the first fixing plate 23 and the second fixing plate 24, and a pressure sensor 26 is arranged inside the placing grooves;

[0039] In use, the placing grooves accommodate the pressure sensor 26, and the pressure sensor 26 can detect the total weight of the second fixing plate 24 and the insertion block 22 without being affected by the bolt 25.

[0040] For combining the hydraulic rod 3 and the insertion block 22, by way of example, as Figure 3 shown, the inner wall of the fitting groove 28 and the outer wall of the fitting block 31 are both designed in a rectangular shape, the size of the fitting block 31 is smaller than the inner wall size of the fitting groove 28, and the fitting block 31 is located inside the fitting groove 28;

[0041] In use, the fitting block 31 and the fitting groove 28 limit the combination position of the hydraulic rod 3 and the insertion block 22, ensuring the connection tightness between the hydraulic rod 3 and the insertion block 22.

[0042] For driving the insertion block 22 to move, by way of example, as Figure 3 shown, an electromagnet 32 is embedded and installed on the outer wall of one end of the fitting block 31, and the electromagnet 32 is in contact with the inner wall of the fitting groove 28;

[0043] In use, the magnetic force of the electromagnet 32 adsorbs the connecting block 27, maintaining the connection stability between the hydraulic rod 3 and the insertion block 22.

[0044] When the present utility model is in use, the hydraulic rod 3 drives the fitting block 31 to move into the fitting groove 28, and the magnetic force of the electromagnet 32 connects the fitting block 31 with the connecting block 27, maintaining the linkage between the hydraulic rod 3 and the insertion block 22;

[0045] The hydraulic rod 3 drives the insertion block 22 to horizontally move to the upper end of the lower template 12, thereby cooperating with the extrusion frame plate 11 to form a mold cavity, and the positioning post 13 provides space for the mounting holes of the formed impeller workpiece, and the external moving mold can cooperate with the mold cavity for die-casting operation.

[0046] After the insertion block 22 is driven by the hydraulic rod 3 to retract, the insertion block 22 maintains the controlled movement track through the slide rail 2 and the slider 21, and after the insertion block 22 moves to the movement limit of the slide rail 2, the electromagnet 32 is powered off;

[0047] The hydraulic rod 3 drives the fitting block 31 to continuously retract until the fitting block 31 disengages from the inside of the fitting groove 28, causing the plug block 22 to disconnect from the external connection;

[0048] The pressure sensor 26 detects the total weight of the plug block 22, so as to be able to judge whether the plug block 22 is damaged and whether there is residual material adhered to the surface of the plug block 22. And since the bolt 25 is installed in a penetrating manner, the second fixing plate 24 can move towards the first fixing plate 23 without hindering the detection of the pressure sensor 26.

[0049] It should be noted that the present utility model is a die-casting mold for an impeller of a centrifugal fan. The components in the present utility model are all components known to those skilled in the art, and their structures and principles can all be learned from technical manuals by those skilled in the art or obtained through conventional experimental methods.

[0050] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present utility model. The scope of protection required by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A die-casting mold for an impeller of a centrifugal fan, characterized in that, It includes a bottom plate (1), a slide rail (2) and a hydraulic rod (3). On one side of the upper end surface of the bottom plate (1), a lower template (12) is installed. On the outer wall of the upper end of the bottom plate (1), slide rails (2) are installed in a circular array distribution area. Inside the slide rail (2), a slider (21) is slidably installed. On the outer wall of the upper end of the slider (21), a plug-in block (22) is provided. On the outer wall of the upper end of the slider (21), a first fixing plate (23) is installed. On one side of the outer wall of the lower end of the plug-in block (22), a second fixing plate (24) is installed. On one outer wall of the plug-in block (22), a connecting block (27) is installed. On one side outer wall of the connecting block (27), a fitting groove (28) is provided. On the outer wall of the upper end of the bottom plate (1), hydraulic rods (3) are installed in a circular array distribution. On one outer wall of the hydraulic rod (3), a fitting block (31) is installed.

2. The die-casting mold for a centrifugal fan impeller according to claim 1, characterized in that, At the center of the outer wall of the upper end of the lower template (12), a positioning column (13) is installed. On the outer wall of the upper end of the lower template (12), extrusion frame plates (11) are installed in a circular array distribution. The extrusion frame plates (11) and the plug-in blocks (22) are distributed in a cross shape.

3. The die-casting mold for a centrifugal fan impeller according to claim 1, characterized in that, One side outer wall of the plug-in block (22) is designed in an inclined shape. The plug-in block (22) is located above the lower template (12).

4. A die-casting mold for a centrifugal fan impeller according to claim 1, characterized in that, On both outer walls of the first fixing plate (23) and the second fixing plate (24), bolts (25) are provided, and the first fixing plate (23) and the second fixing plate (24) are connected by the bolts (25).

5. The die-casting mold for a centrifugal fan impeller according to claim 1, characterized in that, On the opposite outer walls of the first fixing plate (23) and the second fixing plate (24), placing grooves are provided, and pressure sensors (26) are arranged inside the placing grooves.

6. The die-casting mold for a centrifugal fan impeller according to claim 1, characterized in that, The inner wall of the fitting groove (28) and the outer wall of the fitting block (31) are both designed in a rectangular shape. The size of the fitting block (31) is smaller than the inner wall size of the fitting groove (28). The fitting block (31) is located inside the fitting groove (28).

7. The die-casting mold for the impeller of a centrifugal fan according to claim 1, characterized in that, An electromagnet (32) is embedded and installed on one outer wall of the fitting block (31), and the electromagnet (32) is in contact with the inner wall of the fitting groove (28).

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