Centrifugal casting rotor plug removing tool

Abstract

The utility model discloses a centrifugal casting rotor plug removing tool, which belongs to the field of motor centrifugal casting rotor processing, and comprises a lower die fixing plate, a telescopic device convenient for stripping is arranged on the lower die fixing plate, a discharge hole is arranged on the lower die fixing plate, a rotor fixing seat is fixedly mounted at the top of the lower die fixing plate, and the rotor fixing seat is fixedly mounted on the lower die fixing plate. The rotor fixing seat is slidably connected with a rotor assembly. By means of the mode, the stress faces of the conical faces are not located on the same plane, downward pressure can be decomposed, the stress deformation coefficient of the ejector rod and the plug is reduced, the damage rate of a workpiece can be reduced, and the precision of the workpiece can be improved.

Description

Technical Field

[0001] The utility model relates to the field of motor centrifugal casting rotor processing, in particular to a centrifugal casting rotor plugging removal tool. Background Art

[0002] In the past, most motors were manufactured by die-casting. Since the air in the iron core was difficult to discharge during the manufacturing process, the working efficiency of the finished product was low. The centrifugal casting process enables the product to have better working efficiency and has become the mainstream manufacturing method. During the centrifugal casting process, the plug of the centrifugal casting rotor and the cast aluminum gate need to be removed.

[0003] Chinese Patent: CN214314963U (Motor Rotor Casting Device) discloses: a first injection mold, a second injection mold and a tensioning shaft, wherein the tensioning shaft can be vertically mounted on the second injection mold, thereby realizing a one-time integral casting of the magnetic steel and the laminations, avoiding the magnetic steel from falling off when subjected to high / low temperature impact and high speed centrifugal force, and improving the reliability of the motor rotor.

[0004] However, the existing device still has the following problems: in the process of removing the plug and the cast aluminum gate, the prior art uses a push rod to push the plug to remove the cast aluminum gate, but in this operation process, 1. The contact surface between the plug and the push rod is a straight metal surface, and there is a gap between the plug and the shaft hole. This will cause the contact surfaces of the two to be offset when the push rod applies pressure on the top of the plug. At this time, the plug will be subjected to the offset force and will cause damage to the inner wall of the shaft hole, affecting the smoothness of the inner wall of the shaft hole; 2. During the contact between the end face of the plug and the push rod, the vertical surface is subjected to a large force, which can easily cause the push rod and the plug to deform and be scrapped; 3. After the plug is deflected, the push rod is also deflected, which will cause single-sided burrs to appear due to the friction between the aluminum end ring and the push rod.

[0005] Based on this, the utility model designs a centrifugal casting rotor plugging removal tool to solve the above problem. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a centrifugal casting rotor plugging removal tool.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A centrifugal casting rotor plug removal tool, comprising a lower mold fixing plate,

[0009] The lower die fixing plate is provided with a telescopic device for facilitating material removal;

[0010] A discharge hole is provided in the lower die fixing plate;

[0011] A rotor fixing seat is fixedly installed on the top of the lower mold fixing plate;

[0012] The rotor fixing seat is slidably connected with a rotor assembly;

[0013] The rotor assembly comprises a rotor housing, a cast aluminum pouring gate and a plug, wherein the rotor housing is slidably connected to a rotor fixing seat, the cast aluminum pouring gate is fixedly installed at the bottom of the rotor housing, and the plug is placed inside the rotor housing;

[0014] The plug is slidably connected to a push rod via a guide assembly;

[0015] A mounting assembly is arranged on the top of the push rod.

[0016] Furthermore, the telescopic device includes a telescopic groove, a symmetrically arranged sliding block and a spring, the telescopic groove is opened on the lower mold fixing plate, and sliding grooves are opened on the left and right sides of the bottom of the lower mold fixing plate. The sliding block slides in the sliding groove to the upper limit, one end of the spring is fixed to the outer end of the sliding block, and the other end of the spring is fixedly connected to the inner wall of the telescopic groove.

[0017] Furthermore, the discharge hole is communicated with the sliding groove.

[0018] Furthermore, an axial hole is provided inside the rotor fixing seat, and the plug and the push rod are both slidably connected to the axial hole.

[0019] Furthermore, the guide assembly includes a guide head and a guide port, the guide head is fixedly connected to the bottom end of the push rod, and the guide port is opened at the top of the plug.

[0020] Furthermore, the top end of the guide head and the groove surface of the guide opening are both configured to be conical in shape.

[0021] Furthermore, the guide head and the guide opening are slidably matched.

[0022] Furthermore, the mounting assembly includes an upper mold fixing plate and a push rod fixing plate, and the top of the push rod is fixed to the upper mold fixing plate via the push rod fixing plate.

[0023] The utility model has the following technical effects:

[0024] 1. Since the force-bearing surfaces of the conical surface of the utility model are not in the same plane, it is beneficial to decompose the downward pressure, so that the force deformation coefficient of the ejector rod and the plug is reduced, the damage rate of the workpiece can be reduced, and the accuracy of the workpiece can be improved.

[0025] 2. The utility model does not produce deflection, thus avoiding the generation of burrs, and the smoothness of the shaft hole is guaranteed, which is beneficial to improving product quality.

[0026] 3. After the utility model is squeezed by the cast aluminum gate, the sliding block will move to the left and right sides and straighten the angle of the cast aluminum gate, avoiding the jamming situation, expanding the gap in the descending area, which is conducive to the detachment of the workpiece and avoiding the jamming situation caused by the workpiece being squeezed in the discharge hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 The utility model is a three-dimensional centrifugal casting rotor plug removal tool Figure 1 ;

[0029] Figure 2 It is a front view and internal cross-sectional view of a centrifugal casting rotor plug removal tooling of the utility model;

[0030] Figure 3 The utility model is a three-dimensional centrifugal casting rotor plug removal tool Figure 2 ;

[0031] Figure 4 is a structural diagram of the rotor assembly;

[0032] Figure 5 This is a schematic diagram of the installation of the ejector rod and guide head.

[0033] The numbers in the figure represent:

[0034] 1. Lower mold fixing plate; 2. Telescopic device; 21. Telescopic slot; 22. Sliding block; 23. Spring; 3. Discharge hole; 4. Rotor fixing seat; 5. Rotor assembly; 51. Rotor housing; 52. Cast aluminum gate; 53. Plug; 6. Guide assembly; 61. Guide head; 62. Guide port; 7. Ejector rod; 8. Installation assembly; 81. Upper mold fixing plate; 82. Ejector rod fixing plate. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is 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 are within the scope of protection of the utility model.

[0036] The utility model is further described below in conjunction with embodiments.

[0037] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0038] Example 1

[0039] Please refer to the instruction manual Figure 1-5 , a centrifugal casting rotor plug removal tool, comprising a lower mold fixing plate 1;

[0040] A telescopic device 2 is provided on the lower die fixing plate 1 to facilitate material removal;

[0041] A discharge hole 3 is provided in the lower die fixing plate 1;

[0042] A rotor fixing seat 4 is fixedly mounted on the top of the lower mold fixing plate 1;

[0043] A rotor assembly 5 is slidably connected to the rotor fixing seat 4;

[0044] The rotor assembly 5 includes a rotor housing 51, a cast aluminum pouring port 52 and a plug 53. The rotor housing 51 is slidably connected to the rotor fixing seat 4. The cast aluminum pouring port 52 is fixedly installed at the bottom of the rotor housing 51. The plug 53 is placed inside the rotor housing 51.

[0045] The plug 53 is slidably connected to the ejector rod 7 via the guide assembly 6;

[0046] A mounting assembly 8 is provided on the top of the push rod 7 .

[0047] The telescopic device 2 includes a telescopic slot 21, a symmetrically arranged sliding block 22 and a spring 23. The telescopic slot 21 is provided on the lower mold fixing plate 1. The lower mold fixing plate 1 has sliding slots on both the left and right sides of the bottom. The sliding block 22 slides within the upper limit in the sliding slot. One end of the spring 23 is fixed to the outer end of the sliding block 22, and the other end of the spring 23 is fixedly connected to the inner wall of the telescopic slot 21.

[0048] The discharge hole 3 is connected with the sliding groove;

[0049] An axial hole is provided inside the rotor fixing seat 4, and the plug 53 and the push rod 7 are both slidably connected to the axial hole;

[0050] The guide assembly 6 includes a guide head 61 and a guide opening 62. The guide head 61 is fixedly connected to the bottom end of the push rod 7, and the guide opening 62 is opened at the top of the plug 53.

[0051] The top of the guide head 61 and the groove surface of the guide opening 62 are both configured as conical shapes;

[0052] The guide head 61 and the guide opening 62 are slidably matched;

[0053] The mounting assembly 8 includes an upper mold fixing plate 81 and a push rod fixing plate 82, and the top of the push rod 7 is fixed to the upper mold fixing plate 81 through the push rod fixing plate 82;

[0054] The outer end of the sliding block 22 is symmetrically fixed with a gear rack, a limiting block is fixed on the top front side of the lower mold fixing plate 1, and a gear is rotatably connected to the top front side of the lower mold fixing plate 1. The gear rack is slidably connected to the inner side of the limiting block, and the tooth surfaces of the symmetrical gear racks are meshed with the gears for transmission for the synchronous movement of the left and right sliding blocks 22. When the gear rack on one side moves, the gear rack drives the gear to rotate, and then the gear drives the other gear rack to move, thereby realizing the synchronous extension and retraction of the left and right sliding blocks 22.

[0055] When the utility model is in use, the top of the upper mold fixing plate 81 is connected to the external pressure machine, and the bottom of the lower mold fixing plate 1 is fixedly installed on the workbench, so that the discharge hole 3 is aligned with the blanking box, and the pressure machine is started to press the push rod 7 downward. During this process, the push rod 7 passes through the axial hole of the rotor shell 51, and then continues to move downward until the guide head 61 contacts the guide opening 62 of the plug 53, and the contact surface of the guide head 61 and the guide opening 62 is completely fitted. The bottom end of the plug 53 continues to move downward to push the shear cast aluminum gate 52 so that the cast aluminum gate 52 is separated from the rotor shell 51 and falls through the discharge hole 3. At this time, due to the effect of the conical shape, the guide head 61 can automatically align with the center of the guide opening 62 in the plug 53 to avoid skewing and affecting the shape of the workpiece. Since the force-bearing surface of the conical surface is not in the same plane, It is beneficial to decompose the downward pressure, so that the force deformation coefficient of the push rod 7 and the plug 53 is reduced, the damage rate of the workpiece can be reduced, and the accuracy of the workpiece can be improved. At the same time, since there is no deflection, the smoothness of the shaft hole is guaranteed, which is beneficial to the improvement of product quality. The sliding block 22 slides on the telescopic slot 21, and the spring 23 realizes the resetting of the sliding block 22. After the push rod 7 pushes the plug 53 to descend, it reaches a certain distance. The diameter of the hole formed by the sliding block 22 in the natural state is smaller than the maximum diameter of the conical surface of the cast aluminum gate 52. After being squeezed by the cast aluminum gate 52, the sliding block 22 will move to the left and right sides and straighten the angle of the cast aluminum gate 52, avoiding the problem of burrs caused by inclined shearing, expanding the gap in the descending area, which is beneficial to the detachment of the workpiece and avoiding the situation where the workpiece is squeezed in the discharge hole 3 and gets stuck.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A centrifugal casting rotor plug removal tool, comprising a lower mold fixing plate (1), characterized in that: The lower die fixing plate (1) is provided with a telescopic device (2) for facilitating material removal; The lower die fixing plate (1) is provided with a discharge hole (3); A rotor fixing seat (4) is fixedly mounted on the top of the lower mold fixing plate (1); The rotor fixing seat (4) is slidably connected to a rotor assembly (5); The rotor assembly (5) comprises a rotor housing (51), a cast aluminum pouring gate (52) and a plug (53); the rotor housing (51) is slidably connected to a rotor fixing seat (4); the cast aluminum pouring gate (52) is fixedly mounted on the bottom of the rotor housing (51); and the plug (53) is placed inside the rotor housing (51); The plug (53) is slidably connected to a push rod (7) via a guide assembly (6); A mounting assembly (8) is provided on the top of the push rod (7).

2. The centrifugal casting rotor plug removal tool according to claim 1, characterized in that: The telescopic device (2) comprises a telescopic slot (21), a symmetrically arranged sliding block (22) and a spring (23); the telescopic slot (21) is provided on the lower mold fixing plate (1); sliding slots are provided on both the left and right sides of the bottom of the lower mold fixing plate (1); the sliding block (22) slides within the upper limit in the sliding slot; one end of the spring (23) is fixed to the outer end of the sliding block (22); and the other end of the spring (23) is fixedly connected to the inner wall of the telescopic slot (21).

3. The centrifugal casting rotor plug removal tool according to claim 2, characterized in that: The discharge hole (3) is communicated with the sliding groove.

4. The centrifugal casting rotor plug removal tool according to claim 3, characterized in that: An axial hole is provided inside the rotor fixing seat (4), and the plug (53) and the push rod (7) are both slidably connected to the axial hole.

5. The centrifugal casting rotor plug removal tool according to claim 4, characterized in that: The guide assembly (6) comprises a guide head (61) and a guide opening (62); the guide head (61) is fixedly connected to the bottom end of the push rod (7); and the guide opening (62) is opened at the top of the plug (53).

6. The centrifugal casting rotor plug removal tool according to claim 5, characterized in that: The top end of the guide head (61) and the groove surface of the guide opening (62) are both configured to be conical in shape.

7. The centrifugal casting rotor plug removal tool according to claim 6, characterized in that: The guide head (61) and the guide opening (62) are slidably matched.

8. The centrifugal casting rotor plug removal tool according to claim 7, characterized in that: The mounting assembly (8) comprises an upper mold fixing plate (81) and a push rod fixing plate (82), and the top of the push rod (7) is fixed to the upper mold fixing plate (81) via the push rod fixing plate (82).

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