Motor shell die-casting die

Abstract

The utility model discloses a motor shell die-casting die which comprises an upper die, a lower die and a motor shell forming cavity, and a forming core column is arranged in the motor shell forming cavity. A first channel, a second channel, a third channel, a fourth channel, a fifth channel, a sixth channel, a seventh channel, an eighth channel, a ninth channel, a tenth channel, an eleventh channel and a twelfth channel are formed in the forming core column; a first upper flow guide groove, a second upper flow guide groove, a third upper flow guide groove, a fourth upper flow guide groove and a fifth upper flow guide groove are formed in the forming core column; a first lower flow guide groove, a second lower flow guide groove, a third lower flow guide groove, a fourth lower flow guide groove, a fifth lower flow guide groove and a sixth lower flow guide groove are formed in the forming core column; an upper cover plate is arranged at the top of the forming core column, and a lower cover plate is arranged at the bottom. According to the die-casting die, the cooling water path is arranged outside the cylindrical workpiece, and the cooling water path is also arranged in the center of the cylindrical workpiece, so that the effects of rapid cooling and uniform cooling are achieved before the workpiece is demoulded.

Description

Technical Field

[0001] The utility model relates to the technical field of die manufacturing, and more specifically, it relates to a die-casting die for an electric motor housing. Background Art

[0002] The electric motor housing made by aluminum die-casting usually consists of three parts, namely a cylinder body, a front end cover and a rear end cover. The front end cover and the rear end cover can be conveniently manufactured by using a conventional die-casting die. However, the die-casting manufacturing of the cylinder body is difficult, and it is necessary to cool both the inner and outer dies of the cylinder body to facilitate the demolding of the workpiece. In the traditional manufacturing of such cylindrical workpieces, due to the small volume of the workpiece, cooling water channels are only arranged on the outer periphery of the workpiece, resulting in limited cooling, uneven cooling and poor overall effect. Accordingly, the utility model provides a die-casting die for an electric motor housing. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art and provide a die-casting die for an electric motor housing.

[0004] To solve the above technical problems, the purpose of the utility model is realized as follows: A die-casting die for an electric motor housing according to the utility model includes an upper die and a lower die. There is a motor housing forming cavity, part of which is opened on the upper die and the other part is opened on the lower die, between the lower die and the upper die. A forming core column extending vertically is arranged in the motor housing forming cavity. The top of the forming core column is connected to the upper die. Twelve cooling channels are arranged on the forming core column in an equiangular annular array around the axis, and the cooling channels extend along the axial direction of the forming core column. The cooling channels include a first channel, a second channel, a third channel, a fourth channel, a fifth channel, a sixth channel, a seventh channel, an eighth channel, a ninth channel, a tenth channel, an eleventh channel and a twelfth channel;

[0005] A first upper diversion groove connecting the first channel and the second channel, a second upper diversion groove connecting the third channel and the fourth channel, a third upper diversion groove connecting the fifth channel and the sixth channel, a fourth upper diversion groove connecting the seventh channel and the eighth channel, and a fifth upper diversion groove connecting the ninth channel and the tenth channel are opened at the top of the forming core column;

[0006] A first lower diversion groove connecting the second channel and the third channel, a second lower diversion groove connecting the fourth channel and the fifth channel, a third lower diversion groove connecting the sixth channel and the seventh channel, a fourth lower diversion groove connecting the eighth channel and the ninth channel, a fifth lower diversion groove connecting the tenth channel and the eleventh channel, and a sixth lower diversion groove connecting the twelfth channel and the first channel are opened at the bottom of the forming core column;

[0007] The top of the formed core column is detachably connected with an upper cover plate for closing the end face. The upper cover plate is provided with a coolant inlet communicating with the eleventh channel and a coolant outlet communicating with the twelfth channel.

[0008] The bottom of the formed core column is detachably connected with a lower cover plate for closing the end face.

[0009] The present utility model is further configured as: sealing gaskets are respectively arranged between the formed core column and the upper cover plate, and between the formed core column and the lower cover plate.

[0010] The present utility model is further configured as: the upper cover plate is circumferentially provided with upper screw through holes, the formed core column is provided with upper threaded holes matching the upper screw through holes, and upper screws threadedly connected to the upper threaded holes are inserted into the upper screw through holes; the lower cover plate is circumferentially provided with lower screw through holes, the formed core column is provided with lower threaded holes matching the lower screw through holes, and lower screws threadedly connected to the lower threaded holes are inserted into the lower screw through holes.

[0011] In summary, the present utility model has the following beneficial effects: the die-casting mold of the motor housing involved in the present utility model arranges cooling water channels not only outside the cylindrical workpiece, but also in the center of the cylindrical workpiece, so that the workpiece can be quickly cooled and cooled evenly before demolding, facilitating the subsequent demolding of the workpiece, making the demolding smoother, with a complete overall function and strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the overall structural schematic diagram of the present utility model;

[0013] Figure 2 is the structural schematic diagram of another perspective of the present utility model;

[0014] Figure 3 is the partial structural schematic diagram of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the preferred implementation solutions of the present utility model will be described below in conjunction with specific embodiments. However, it should be understood that these descriptions are only for further explaining the features and advantages of the present utility model, rather than limiting the patent requirements of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0016] The present utility model will be further described below in conjunction with the drawings and preferred embodiments.

[0017] Embodiment 1

[0018] SeeFigures 1 to 3 As shown in Figures 1 to 3 , a die-casting mold for a motor housing according to this embodiment includes an upper mold 1 and a lower mold (not shown). There is a motor housing forming cavity 2, with a part opened on the upper mold and another part opened on the lower mold, between the lower mold and the upper mold 1. An axially extending forming core column 3 is provided in the motor housing forming cavity 2. The top of the forming core column 3 is connected to the upper mold 1. Twelve cooling channels are arranged on the forming core column 3 in an equally spaced angular annular array around the axis, and the cooling channels extend along the axial direction of the forming core column. The cooling channels include a first channel 101, a second channel 102, a third channel 103, a fourth channel 104, a fifth channel 105, a sixth channel 106, a seventh channel 107, an eighth channel 108, a ninth channel 109, a tenth channel 110, an eleventh channel 111, and a twelfth channel 112;

[0019] At the top of the forming core column 3, there are a first upper diversion groove 201 connecting the first channel and the second channel, a second upper diversion groove 202 connecting the third channel and the fourth channel, a third upper diversion groove 203 connecting the fifth channel and the sixth channel, a fourth upper diversion groove 204 connecting the seventh channel and the eighth channel, and a fifth upper diversion groove 205 connecting the ninth channel and the tenth channel;

[0020] At the bottom of the forming core column 3, there are a first lower diversion groove 301 connecting the second channel and the third channel, a second lower diversion groove 302 connecting the fourth channel and the fifth channel, a third lower diversion groove 303 connecting the sixth channel and the seventh channel, a fourth lower diversion groove 304 connecting the eighth channel and the ninth channel, a fifth lower diversion groove 305 connecting the tenth channel and the eleventh channel, and a sixth lower diversion groove 306 connecting the twelfth channel and the first channel;

[0021] The top of the forming core column 3 is detachably connected with an upper cover plate 4 with a closed end face. There is a coolant inlet 4001 communicating with the eleventh channel and a coolant outlet 4002 communicating with the twelfth channel on the upper cover plate 4;

[0022] The bottom of the forming core column 3 is detachably connected with a lower cover plate 5 with a closed end face.

[0023] Furthermore, upper screw through holes 401 are circumferentially distributed on the upper cover plate 4, and upper threaded holes 402 matching the upper screw through holes are provided on the forming core column 3. Upper screws (not shown) are threaded through the upper screw through holes 401 and connected to the upper threaded holes 402; lower screw through holes 501 are circumferentially distributed on the lower cover plate 5, and lower threaded holes 502 matching the lower screw through holes are provided on the forming core column 3. Lower screws (not shown) are threaded through the lower screw through holes 501 and connected to the lower threaded holes 502.

[0024] In this embodiment, the coolant is poured in from the coolant inlet 4001, guided through the internal channel, and finally discharged from the coolant outlet 4002, taking away a large amount of heat to achieve the function of quickly cooling the mold.

[0025] Embodiment 2

[0026] See Figures 1 to 3 As shown, for a die-casting mold of a motor housing involved in this embodiment, on the basis of Embodiment 1, it is further set that sealing gaskets (not shown) are respectively provided between the forming core column 3 and the upper cover plate 4, and between the forming core column 3 and the lower cover plate 5.

[0027] In this embodiment, by providing sealing gaskets between the forming core column 3 and the upper cover plate 4, and between the forming core column 3 and the lower cover plate 5, the sealing effect is enhanced. Among them, the sealing gaskets are made of heat-resistant materials.

[0028] For the die-casting mold of the motor housing involved in the present utility model, in addition to arranging cooling water channels outside the cylindrical workpiece, cooling water channels are also arranged in the center of the cylindrical workpiece, so that before the workpiece is demolded, the effects of rapid cooling and uniform cooling are achieved, facilitating the subsequent demolding of the workpiece, making the demolding smoother, with the overall function being perfect and the practicability being strong.

[0029] Unless otherwise clearly specified and defined, in the present utility model, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicating the orientation or positional relationship, it is based on the actual shown orientation or positional relationship, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present utility model are only for exemplary illustration and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood in combination with the embodiments and according to the specific circumstances.

[0030] Unless otherwise clearly specified and defined, in the present utility model, if there are terms such as "set", "connected" and "connected", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0031] The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present utility model without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present utility model through logical analysis, reasoning, or limited experiments on the basis of the prior art shall fall within the protection scope determined by the claims.

Claims

1. A die-casting mold for a motor housing, comprising an upper mold and a lower mold. There is a motor housing forming cavity, part of which is formed on the upper mold and the other part is formed on the lower mold, between the lower mold and the upper mold. A forming core column extending vertically is arranged in the motor housing forming cavity, and the top of the forming core column is connected to the upper mold. It is characterized in that: Twelve cooling channels are arranged in an equiangular annular array around the axis on the formed core column, and the cooling channels extend along the axial direction of the formed core column. The cooling channels include a first channel, a second channel, a third channel, a fourth channel, a fifth channel, a sixth channel, a seventh channel, an eighth channel, a ninth channel, a tenth channel, an eleventh channel, and a twelfth channel; At the top of the formed core column, a first upper diversion groove connecting the first channel and the second channel, a second upper diversion groove connecting the third channel and the fourth channel, a third upper diversion groove connecting the fifth channel and the sixth channel, a fourth upper diversion groove connecting the seventh channel and the eighth channel, and a fifth upper diversion groove connecting the ninth channel and the tenth channel are provided; At the bottom of the formed core column, a first lower diversion groove connecting the second channel and the third channel, a second lower diversion groove connecting the fourth channel and the fifth channel, a third lower diversion groove connecting the sixth channel and the seventh channel, a fourth lower diversion groove connecting the eighth channel and the ninth channel, a fifth lower diversion groove connecting the tenth channel and the eleventh channel, and a sixth lower diversion groove connecting the twelfth channel and the first channel are provided; An upper cover plate for closing the end face is detachably connected to the top of the formed core column, and a coolant inlet communicating with the eleventh channel and a coolant outlet communicating with the twelfth channel are provided on the upper cover plate; A lower cover plate for closing the end face is detachably connected to the bottom of the formed core column.

2. The die-casting mold for the motor housing according to claim 1, wherein: Sealing gaskets are respectively provided between the formed core column and the upper cover plate, and between the formed core column and the lower cover plate.

3. The die-casting mold for the motor housing according to claim 1 or 2, characterized in that: Upper screw perforations are circumferentially arranged on the upper cover plate, upper threaded holes matching the upper screw perforations are provided on the formed core column, and upper screws threadedly connected to the upper threaded holes are inserted into the upper screw perforations; lower screw perforations are circumferentially arranged on the lower cover plate, lower threaded holes matching the lower screw perforations are provided on the formed core column, and lower screws threadedly connected to the lower threaded holes are inserted into the lower screw perforations.

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