Cast aluminum die for skewed slot rotor

Abstract

The utility model relates to the technical field of cast aluminum dies, in particular to a cast aluminum die of a skewed slot rotor. The utility model provides a cast aluminum die of a skewed slot rotor, which comprises an upper die holder, an upper end die is arranged on the upper die holder, the upper end die comprises a first upper die and a second upper die, a first exhaust port is arranged at the top end of the first upper die, a columnar air plug is arranged at the bottom of the first upper die, a dummy shaft is detachably arranged on the second upper die, the dummy shaft is a hollow shaft, and the dummy shaft is connected with the first exhaust port. The second upper die is arranged at the bottom of the upper die base and connected with the lower die base through the middle end die, the middle end die comprises a first middle die body, a second middle die body and a third middle die body, and the first middle die body, the second middle die body and the third middle die body define the middle end die. According to the utility model, the problems that the cast aluminum filling rate of the skewed slot motor rotor is low, the generation rate of waste parts is increased, and the production cost of the skewed slot motor rotor is increased in the cast aluminum process are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cast aluminum mould technical field especially is cast aluminum mould of skew slot rotor. BACKGROUND

[0002] Skew slot is a very important structure in motor rotor, which is widely used in various mechanical equipment. For example, motor, fan and water pump, etc., the skew slot on the skew slot can increase the torque of the motor rotor. Further, the cast aluminum quality of the motor rotor also directly affects the motor parameters such as the speed, temperature rise, starting torque and maximum torque of the motor rotor.

[0003] However, in the cast aluminum process of the elongated type motor rotor, the equipment needs to be filled with high pressure and high speed, and in this process, the air discharge effect of the inner cavity position of the rotor core and the cavity position of the mold forming is not good, which causes the solution used for cast aluminum to be unable to completely fill the position to be filled, especially for the cast aluminum process of the motor rotor with skew slot and large length-diameter ratio, the cast aluminum filling rate value cannot reach the standard, causing internal defects of the cast aluminum motor rotor, affecting the design performance of the motor, causing unnecessary waste of parts, and increasing the production cost of the motor.

[0004] Therefore, the application provides a skew slot rotor cast aluminum mold, which improves the cast aluminum filling rate value of the skew slot motor rotor, reduces the generation of waste parts, and further reduces the production cost of the skew slot motor rotor, which is a technical problem to be solved. SUMMARY

[0005] The utility model provides a skew slot rotor cast aluminum mold, solves in cast aluminum process, the cast aluminum filling rate value of skew slot motor rotor is low, the generation rate of waste parts increases, and further increases the production cost of skew slot motor rotor.

[0006] The utility model provides a, include: upper die base, be provided with upper end mould on the upper die base, the upper end mould includes first upper die and second upper die, the top of first upper die is provided with first exhaust port, the bottom of first upper die is provided with cylindrical air plug, the second upper die is detachably provided with false shaft, the false shaft is hollow shaft, the second upper die sets up in the bottom of upper die base, the second upper die is connected with lower die base through middle end mould, the middle end mould includes first middle mould, second middle mould and third middle mould, first middle mould, second middle mould and third middle mould enclose the middle end mould.

[0007] In an implementable manner, the first upper die slides in the upper die base, and a second exhaust port is provided on the sidewall of the upper die base.

[0008] In an implementation, the middle die is connected to the second upper die through a limiting ring, the middle die is provided with a first limiting block, the limiting ring is provided with a second limiting block on the inner wall, and the first limiting block and the second limiting block abut each other.

[0009] In an implementation, the middle die is provided with a first chamfer at the top end and a second chamfer at the bottom end, the second upper die is provided with a first groove, the lower die seat is provided with a second groove, the first chamfer is matched with the first groove, and the second chamfer is matched with the second groove, so that the middle die is circularly locked between the second upper die and the lower die seat.

[0010] In an implementation, the two end sides of any one of the first middle die, the second middle die and the third middle die are respectively provided with a plurality of fold line protrusions and fold line recesses, the fold line protrusions are matched with the fold line recesses, so that the fold line contact surfaces abutting between any two of the first middle die, the second middle die and the third middle die are formed.

[0011] In an implementation, the lower die seat is provided with a plurality of feeding ports, and the feeding ports are uniformly arranged on the bottom of the lower die seat.

[0012] In an implementation, a cooling assembly is further included, the side walls of the first middle die, the second middle die and the third middle die are provided with cooling grooves, and the cooling assembly is arranged in the cooling grooves.

[0013] In an implementation, the cooling assembly includes cooling plates, the cooling plates are arc-shaped, the cooling plates are a plurality of, the plurality of cooling plates are connected through locking pieces, and the plurality of cooling plates are respectively arranged in the cooling grooves on the outer side walls of the first middle die, the second middle die and the third middle die.

[0014] In an implementation, the locking pieces include connecting columns and connecting arc pieces, the two ends of the connecting arc pieces are respectively connected to the two connecting columns, the top end of the connecting column is provided with a rotatable lever, and the lever is used to fix the connecting arc piece on the connecting column.

[0015] In an implementation, the cooling assembly further includes a cooling pipe, the cooling pipe is detachably connected to the cooling plate, and the pipeline of the cooling pipe is used for the flow of condensate.

[0016] The utility model discives beneficial effect: first, the upper die holder is connected with the middle end mould, and the twist slot rotor is placed on the lower die holder, and the middle end mould is sleeved on the twist slot rotor. Then, the dummy shaft on the second upper die passes through the twist slot rotor, and the bottom of the first upper die abuts with the twist slot rotor. Again, the air in the cast aluminum solution will ascend in the cavity of the middle end mould along with the cast aluminum solution, and then be discharged from the cylindrical air plug and the first exhaust port, thereby reducing the air residue in the cast aluminum solution. Through the cooperation of the first exhaust port and the cylindrical air plug, the problem of low cast aluminum fullness rate of the twist slot motor rotor, increased generation rate of waste parts and increased production cost of the twist slot motor rotor in the cast aluminum process is solved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed to be used in the specific embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0018] Figure 1 It is a sectional front view of the cast aluminum mold of the twist slot rotor of the utility model;

[0019] Figure 2 It is a sectional front view of the cast aluminum mold and the twist slot rotor cooperation of the utility model;

[0020] Figure 3 It is an explosion front view of the middle end mould, the second upper die and the lower die holder of the cast aluminum mold of the twist slot rotor of the utility model;

[0021] Figure 4 It is a first angle perspective view of the first middle mould of the cast aluminum mold of the twist slot rotor of the utility model;

[0022] Figure 5 It is a perspective view of the first middle mould of the cast aluminum mold of the twist slot rotor of the utility model, which has a broken line convex and a broken line depression;

[0023] Figure 6 It is a second angle perspective view of the first middle mould of the cast aluminum mold of the twist slot rotor of the utility model;

[0024] Figure 7 It is a perspective view of the first middle mould and the cooling assembly cooperation of the cast aluminum mold of the twist slot rotor of the utility model;

[0025] Figure 8 It is a front view of the cast aluminum mold A area of the twist slot rotor of the utility model;

[0026] Figure 9 Figure 1 is a perspective view of a first middle mold of a cast aluminum mold for a skew slot rotor according to the present application;

[0027] Figure 10 Figure 2 is a perspective view of a middle end mold of a cast aluminum mold for a skew slot rotor according to the present application.

[0028] Explanation of reference signs:

[0029] 1, upper mold base; 2, upper end mold; 201, first upper mold; 202, second upper mold; 3, dummy shaft; 4, cylindrical air plug; 5, first exhaust port; 6, middle end mold; 601, first middle mold; 602, second middle mold; 603, third middle mold; 7, cooling assembly; 701, cooling plate; 702, cooling pipe; 8, locking piece; 801, connecting column; 802, connecting arc piece; 9, lever; 10, second exhaust port; 11, limiting ring; 12, first limiting block; 13, second limiting block; 14, first chamfer; 15, second chamfer; 16, first groove; 17, second groove; 18, fold line protrusion; 19, fold line recess; 20, feed port; 21, cooling groove; 22, lower mold base; 23, skew slot rotor. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be described below in conjunction with embodiments, obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In the description of the utility model, need understanding is, the term "first", "second" is only used for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the utility model, "a plurality of" means two or more than two, unless otherwise specifically limited. In addition, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] Referring to Figure 1 、 Figure 2 and Figure 10 , the utility model provides technical scheme: a cast aluminum mold of skew slot rotor 23, include: upper die seat 1, upper die seat 1 is provided with upper end die 2, upper end die 2 includes first upper die 201 and second upper die 202, first upper die 201 is provided with dummy shaft 3, dummy shaft 3 is hollow shaft, the bottom of dummy shaft 3 is provided with cylindrical air plug 4, the top end of first upper die 201 is provided with first exhaust port 5, second upper die 202 is arranged at the bottom of upper die seat 1, second upper die 202 is connected with lower die seat 22 through middle end die 6, middle end die 6 includes first middle die 601, second middle die 602 and third middle die 603.

[0034] Specifically, the upper die seat 1 is connected with the middle end die 6, the skew slot rotor 23 is placed on the lower die seat 22, and the middle end die 6 is sleeved on the skew slot rotor 23. Then, the dummy shaft 3 on the second upper die 202 passes through the skew slot rotor 23, and the bottom of the first upper die 201 abuts against the skew slot rotor 23. Then, the air in the cast aluminum solution will rise in the chamber of the middle end die 6 and be discharged from the cylindrical air plug 4 and the first exhaust port 5, thereby reducing the air residue in the cast aluminum solution. The air in the chamber of the middle end die 6 and the skew slot rotor 23 will be squeezed out through the cylindrical air plug 4 of the first upper die 201 above the dummy shaft 3 as the aluminum solution advances upward, which can maximize the control of the bubble content in the aluminum solution injection process and improve the cast aluminum fullness rate of the skew slot rotor.

[0035] Among them, the first middle die 601, the second middle die 602 and the third middle die 603 are large, and the three are combined to form the middle end die 6, and the contact surface between the three is a gap connection.

[0036] Referring to Figure 5, preferably, the two end sides of any one of the first middle mold 601, the second middle mold 602 and the third middle mold 603 are respectively provided with a plurality of fold line protrusions 18 and fold line recesses 19, the fold line protrusions 18 and the fold line recesses 19 are matched to form abutting fold line contact surfaces between any two of the first middle mold 601, the second middle mold 602 and the third middle mold 603. In this way, the molten aluminum cannot flow out from the gap between the first middle mold 601, the second middle mold 602 and the third middle mold 603, and the air in the molten aluminum can be discharged from the gap between the first middle mold 601, the second middle mold 602 and the third middle mold 603. It should be noted that the fold line contact surface is a complex shape composed of multiple line segments, and in order to facilitate the view, the present application is simply identified, and the specific shape of the fold line contact surface is shown in the drawings. Figure 5 The focus is to express the position and matching relationship of the fold line contact surface.

[0037] Referring to Figure 1 and Figure 2 In some embodiments, the first upper mold 201 slides in the upper mold seat 1, and the second exhaust port 10 is arranged on the side wall of the upper mold seat 1. Among them, the second upper mold 202 is fixed on the upper mold seat 1, and by sliding the first upper mold 201 in the upper mold seat 1, the twist slot rotor 23 with different length-diameter ratios can be adapted, and the application of the cast aluminum equipment is increased. The wide. The upper mold seat 1 is provided with a plurality of second exhaust ports 10, which effectively ensures that the air squeezed out in the middle end mold 6 and the twist slot rotor 23 during the cast aluminum process is smoothly discharged, and the molten aluminum is maximized. The cavity of the middle end mold 6 and the guide bar hole of the twist slot rotor 23 are filled. The split structure of the first upper mold 201 and the second upper mold 202 effectively ensures the smoothness of the air discharge channel in the middle end mold 6.

[0038] In some embodiments, the middle end mold 6 is connected with the second upper mold 202 through the limiting ring 11, the middle end mold 6 is provided with the first limiting block 12, the inner wall of the limiting ring 11 is provided with the second limiting block 13, and the first limiting block 12 and the second limiting block 13 abut each other. The top surface of the middle end mold 6 abuts against the bottom surface of the second upper mold 202, and then the limiting ring 11 is sleeved into the middle end mold 6 from below the middle end mold 6 until the second limiting block 13 abuts against the first limiting block 12. The limiting ring 11 fixes the middle end mold 6 on the second upper mold 202.

[0039] Preferably, an internal thread is arranged on the inner side wall of the limiting ring 11, and an external thread is arranged on the outer side wall of the upper mold seat 1. In the locked state of the limiting ring 11, the limiting ring 11 is connected with the upper mold seat 1 through screwing.

[0040] Referring to Figure 3 and Figure 4In some embodiments, the top end of the middle die 6 is provided with a first chamfer 14, the bottom end of the middle die 6 is provided with a second chamfer 15, the second upper die 202 is provided with a first groove 16, the lower die seat 22 is provided with a second groove 17, the first chamfer 14 cooperates with the first groove 16, and the second chamfer 15 cooperates with the second groove 17, so that the middle die 6 is circularly locked between the second upper die 202 and the lower die seat 22. Preferably, the first chamfer 14 and the first groove 16 and the second chamfer 15 and the second groove 17 are connected by a broken line gap, so that the molten aluminum cannot flow out from the connection between the middle die 6 and the second upper die 202 and the lower die seat 22, and the air in the molten aluminum can be discharged from the connection between the middle die 6 and the second upper die 202 and the lower die seat 22.

[0041] In some embodiments, the bottom of the lower die seat 22 is provided with a feeding port 20, and the feeding port 20 is a plurality of feeding ports 20 which are uniformly arranged on the bottom of the lower die seat 22. In some embodiments, the feeding port 20 on the lower end die is arranged in a cylindrical annular shape, which effectively realizes uniform discharge of the molten aluminum into the middle die 6. Moreover, the air is discharged in the same direction, avoiding the formation of air vortex, which causes the air to be wrapped in the aluminum solution.

[0042] Referring to Figure 6 and Figure 7 In some embodiments, the cooling assembly 7 is further included, the side walls of the first middle die 601, the second middle die 602 and the third middle die 603 are provided with cooling grooves 21, and the cooling assembly 7 is arranged in the cooling grooves 21. Further, the cooling assembly 7 includes cooling plates 701, the cooling plates 701 are arc-shaped, the cooling plates 701 are a plurality of cooling plates 701 which are connected by locking members 8, and the plurality of cooling plates 701 are respectively arranged in the cooling grooves 21 on the outer side walls of the first middle die 601, the second middle die 602 and the third middle die 603.

[0043] In some embodiments, the cooling plates 701 are arranged in the cooling grooves 21, and the cooling plates 701 are preferably metals with good heat dissipation function. The material of the cooling plates 701 is not limited in the present application. The cooling plates 701 can make the molten aluminum solidify faster, and due to thermal expansion and contraction, the demolding process is more convenient. While protecting the cast aluminum die, the production efficiency of the skewed slot motor rotor is also improved.

[0044] Referring to Figure 8 and Figure 9In some embodiments, the locking member 8 comprises connecting columns 801 and connecting arc pieces 802, two ends of each connecting arc piece 802 are connected with two connecting columns 801 respectively, and a rotatable lever 9 is arranged at the top end of each connecting column 801, and the lever 9 is used to fix the connecting arc piece 802 on the connecting column 801. The connecting arc piece 802 is detachably arranged on the cooling plate 701, when it is needed to fix the connecting arc piece 802 on the cooling plate 701, the lever 9 is first laid flat, and then the lever 9 is pushed, so that the side wall of the lever 9 abuts against the side wall of the connecting arc piece 802, and the connecting arc piece 802 is limited on the cooling plate 701. When it is needed to remove the connecting arc piece 802 from the cooling plate 701, the lever 9 is first pushed reversely, so that the side wall of the lever 9 is separated from the side wall of the connecting arc piece 802, and then the lever 9 is erected, and the connecting arc piece 802 is removed from the cooling plate 701.

[0045] In some embodiments, the cooling assembly 7 further comprises a cooling pipe 702, the cooling pipe 702 is detachably connected with the cooling plate 701, and the pipeline of the cooling pipe 702 is used for the flow of the condensate. Preferably, the cooling pipe 702 is spirally arranged, and the cooling plate 701 is correspondingly provided with a threaded recess, and the cooling pipe 702 is rotatably arranged on the side wall of the cooling plate 701.

[0046] Working process

[0047] Firstly, the skew slot rotor 23 is placed on the lower die seat 22, the top ends of the first middle die 601, the second middle die 602 and the third middle die 603 are respectively clamped into the first recess 16, then the limiting ring 11 is passed through the first middle die 601, the second middle die 602 and the third middle die 603 from bottom to top, and the limiting ring 11 is screwed on the upper end seat, the second slider abuts against the first slider, and the limiting ring 11 fixes the first middle die 601, the second middle die 602 and the third middle die 603 on the upper die seat 1. Then, the cooling plate 701 is fixed in the cooling groove 21 on the side wall of the first middle die 601, the second middle die 602 and the third middle die 603 through the connecting arc piece 802 and the connecting column 801 respectively by controlling the shift lever 9, and the cooling pipe 702 is screwed on the side wall of the cooling plate 701. Then, the first middle die 601, the second middle die 602 and the third middle die 603 are sleeved on the skew slot rotor 23, the dummy shaft 3 passes through the skew slot rotor 23, the bottom ends of the first middle die 601, the second middle die 602 and the third middle die 603 are respectively clamped into the second recess 17, and the first upper die 201 is forced to move upward in the upper die seat 1. Further, the first middle die 601, the second middle die 602 and the third middle die 603 are circularly compressed into the middle end die 6 by the first recess 16 of the second upper die 202 and the second recess 17 on the lower die seat 22, and the connections between the first chamfer 14 and the first recess 16, the second chamfer 15 and the second recess 17 and the first middle die 601, the second middle die 602 and the third middle die 603 are all line gap abutments. Then, the aluminum solution is injected into the middle end die 6 from bottom to top by the feeding device through the feeding port 20, and fills the cavity of the middle end die 6 and the guide bar hole of the skew slot rotor 23, part of the air in the aluminum solution is discharged from the line gap between the first middle die 601, the second middle die 602 and the third middle die 603, and the other part is discharged from the cylindrical air plug 4 and the first exhaust port 5 and the second exhaust port 10. Finally, the pressure applied by the first upper die 201 is controlled to complete the casting process of the skew slot rotor 23.

[0048] In the above embodiments, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0049] It is to be noted that when an element is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or intervening elements can be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element, or intervening elements can be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar terms as used herein are for descriptive purposes only and not meant to be limiting.

[0050] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "aspects", "specific aspects", or "some aspects" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or aspect are contained in at least one embodiment or aspect of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or aspect. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in one or more embodiments or aspects. In addition, the skilled in the art can combine and combine the different embodiments or aspects described in the present application and the features of the different embodiments or aspects without contradiction.

[0051] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A casting mold for casting an aluminum rotor of a skew slot, characterized by, The utility model relates to a moulding machine, which comprises: An upper die holder is provided with an upper end die, the upper end die comprises a first upper die and a second upper die, the top end of the first upper die is provided with a first exhaust port, the bottom of the first upper die is provided with a cylindrical air plug, the second upper die is detachably provided with a dummy shaft, the dummy shaft is a hollow shaft, the second upper die is arranged at the bottom of the upper die holder, the second upper die is connected with a lower die holder through a middle end die, the middle end die comprises a first middle die, a second middle die and a third middle die, the first middle die, the second middle die and the third middle die enclose the middle end die.

2. The cast aluminum mold for a skew slot rotor according to claim 1, characterized by, The first upper die slides in the upper die holder, and the sidewall of the upper die holder is provided with a second exhaust port.

3. The cast aluminum mold for a skew slot rotor as recited in claim 2, wherein The middle end die is connected with the second upper die through a limiting ring, the middle end die is provided with a first limiting block, the inner wall of the limiting ring is provided with a second limiting block, and the first limiting block and the second limiting block abut each other.

4. The cast aluminum mold for a skew slot rotor as recited in claim 3, wherein The top end of the middle end die is provided with a first chamfer, the bottom end of the middle end die is provided with a second chamfer, the second upper die is provided with a first groove, the lower die holder is provided with a second groove, the first chamfer cooperates with the first groove, and the second chamfer cooperates with the second groove, so that the middle end die is circularly locked between the second upper die and the lower die holder.

5. The cast aluminum mold for a skew slot rotor as recited in claim 4, wherein The two end sides of any one of the first middle die, the second middle die and the third middle die are respectively provided with a plurality of fold line protrusions and fold line recesses, the fold line protrusions cooperate with the fold line recesses, so that the fold line contact surfaces are formed between any two of the first middle die, the second middle die and the third middle die.

6. The cast aluminum mold for a skew slot rotor as set forth in claim 5, characterized by The bottom of the lower die holder is provided with a feeding port, and a plurality of feeding ports are uniformly arranged on the bottom of the lower die holder.

7. The cast aluminum mold for a skew slot rotor as set forth in claim 6, characterized by The utility model also comprises a cooling assembly, the sidewall of the first middle die, the second middle die and the third middle die is provided with a cooling groove, and the cooling assembly is arranged in the cooling groove.

8. The cast aluminum mold for a skew slot rotor as set forth in claim 7, characterized by The cooling assembly comprises a cooling plate, the cooling plate is arc-shaped, a plurality of cooling plates are connected through a locking piece, and the cooling plates are arranged in the cooling grooves on the outer sidewalls of the first middle die, the second middle die and the third middle die.

9. The cast aluminum mold for a skew slot rotor as set forth in claim 8, characterized by The locking piece comprises a connecting column and a connecting arc piece, the two ends of the connecting arc piece are connected with two connecting columns respectively, the top end of the connecting column is provided with a rotatable lever, and the lever is used for fixing the connecting arc piece on the connecting column.

10. The cast aluminum mold for a skew slot rotor as set forth in claim 9, characterized by The cooling assembly further comprises a cooling pipe, the cooling pipe is detachably connected with the cooling plate, and the pipeline of the cooling pipe is used for flowing of condensate.

Images