Double-end motor

Abstract

The utility model discloses a double-end motor, which comprises a shell, the front side and the rear side of the shell are provided with open side surfaces, the interior of the shell is provided with an accommodating cavity and a plurality of inner ventilation channels, and the accommodating cavity and all the inner ventilation channels extend to the front side surface and the rear side surface of the shell; the number of the end covers is two, the two end covers are connected to the front side face and the rear side face of the shell correspondingly, the end cover located on the front side is provided with an air channel inlet, an air channel outlet and a first air channel, the end cover located on the rear side is provided with a second air channel, and the first air channel communicates with the second air channel through a plurality of inner ventilation channels. The air duct inlet and the air duct outlet cannot be communicated through the first air duct; and the driving module is installed in the containing cavity, the driving module is provided with a rotatable driving shaft, and the two ends of the driving shaft extend out of two end covers correspondingly. According to the structure, the double-end motor can be effectively and comprehensively cooled, accumulation of metal filings is avoided while heat accumulation is reduced, and the heat dissipation effect of the double-end motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a double-head motor. Background Art

[0002] Ordinary sawing motors are mostly single-head settings, and can only install one tool at a time. Different tools need to be frequently replaced to meet different processing requirements. In order to facilitate tool replacement, a tool changing mechanism is also required, which leads to a sharp increase in costs, and the tool changing time also occupies a part of the production time.

[0003] In order to solve the above technical problems, the prior art has developed a double-head sawing motor based on the ordinary sawing motor. The double-head sawing motor has two mounting positions, which can be used to install different tools, such as milling cutters and saw blades, to meet the composite processing requirements of some workpieces.

[0004] However, the existing sawing motors generally dissipate heat through external heat sinks. Since the double-head sawing motor has two processing stations, it generates a lot of heat and metal chips during processing, which makes it easy for metal chips to accumulate in the external heat sink, seriously affecting the heat dissipation function of the motor. Utility Model Content

[0005] The utility model aims to provide a double-head motor with excellent heat dissipation performance.

[0006] According to the double-headed motor of the first embodiment of the utility model, it includes:

[0007] A shell, wherein both the front and rear sides of the shell are provided with open side surfaces, wherein the interior of the shell is provided with a cavity and a plurality of internal ventilation channels, wherein the cavity and all the internal ventilation channels extend to the front and rear sides of the shell;

[0008] There are two end covers, the two end covers are respectively connected to the front side and the rear side of the shell, the end cover located on the front side is provided with an air duct inlet, an air duct outlet and a first air duct, and the end cover located on the rear side is provided with a second air duct, the first air duct and the second air duct are communicated through the plurality of internal ventilation channels, and the air duct inlet and the air duct outlet cannot be communicated through the first air duct;

[0009] A driving module is installed in the cavity, and the driving module is provided with a rotatable driving shaft, and two end covers are respectively extended from both ends of the driving shaft.

[0010] The double-headed motor according to the embodiment of the utility model has at least the following beneficial effects: when heat dissipation is required, compressed air is introduced into the first air duct through the air duct inlet. Since the air duct inlet and the air duct outlet cannot be connected through the first air duct, the compressed air in the first air duct will flow along the inner ventilation channel to the second air duct, and then the compressed air in the second air duct will continue to flow along the inner ventilation channel to the first air duct and leave from the air duct outlet. The above-mentioned air flow direction flows through the outer casing and the two end covers, so the double-headed motor can be effectively and comprehensively cooled. While reducing heat accumulation, it also avoids the accumulation of metal chips, which is beneficial to improving the heat dissipation effect of the double-headed motor.

[0011] According to some embodiments of the present invention, specifically, the number of the internal ventilation channels is four, and the four internal ventilation channel matrices are distributed on the periphery of the cavity.

[0012] According to some embodiments of the present invention, in order to better dissipate the heat of the driving module in the cavity, each of the inner ventilation channels has a heat dissipation slot structure to improve the heat exchange rate between the cavity and the inner ventilation channel.

[0013] According to some embodiments of the utility model, the first air duct includes a first straight channel, the first straight channel is provided with the air duct inlet; the second air duct includes two second straight channels which are parallel to each other but not connected, and the first straight channel is orthogonal to the second straight channel. Compressed air enters from the air duct inlet and flows in the first air duct, and then the compressed air flows from the first air duct to the two inner ventilation channels therein, and as the compressed air continues to flow, the two second air ducts receive compressed air from the two inner ventilation channels respectively, and then the compressed air flows from the two second air ducts to the other two inner ventilation channels, so that the compressed air can flow in a specified path, thereby realizing comprehensive heat dissipation of the double-headed motor.

[0014] According to some embodiments of the utility model, in order to facilitate the processing of the first linear channel, the first linear channel passes through the end cover located on the front side, and both ends of the first linear channel are connected to the first plug; in order to facilitate the processing of the second linear channel, the second linear channel passes through the end cover located on the rear side, and both ends of the second linear channel are connected to the second plug.

[0015] According to some embodiments of the utility model, there are multiple air duct outlets, and all of the air duct outlets are respectively connected to the two internal ventilation channels. The compressed air in the two second air ducts flows through the two internal ventilation channels respectively and finally flows out from the multiple air duct outlets to the outside to meet the air circulation.

[0016] According to some embodiments of the present invention, the first air duct and the second air duct are respectively provided with a first guide hole and a second guide hole connected to the cavity, so that compressed air can enter the cavity, thereby directly dissipating heat for the driving module.

[0017] According to some embodiments of the present invention, in order to artificially control the contact between the cavity and the compressed air, the first guide hole and the second guide hole are detachably connected with a first sealing member and a second sealing member, respectively.

[0018] According to some embodiments of the utility model, in order to facilitate the access to the compressed air pipe, the air duct inlet is connected to an air pipe joint; in order to reduce the air outlet noise, the air duct outlet is connected to a muffler.

[0019] According to some embodiments of the utility model, each end cover is provided with a bearing chamber, and each bearing chamber is installed with a bearing matching the drive shaft, so that both ends of the drive shaft can be supported by the bearings to improve the rotation quality.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a double-headed motor according to an embodiment of the utility model;

[0023] Figure 2 yes Figure 1 A top view of the double-ended motor is shown;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the housing of an embodiment of the utility model;

[0025] Figure 4 yes Figure 2 The cross-sectional view of the double-headed motor shown along the AA section line;

[0026] Figure 5 yes Figure 2 The cross-sectional view of the double-headed motor along the BB section line is shown.

[0027] In the accompanying drawings: 100-housing, 200-driving module, 300-front end cover, 400-rear end cover, 110-chamber, 120-internal ventilation channel, 210-winding, 220-driving shaft, 301-bearing chamber, 230-bearing, 240-clip, 310-first air duct, 311-first straight channel, 312-air duct inlet, 500-trachea joint, 313-first air guide hole, 320-air duct outlet, 410-second air duct, 411-second straight channel, 412-second air guide hole, 314-first plug, 414-second plug, 315-first guide hole, 415-second guide hole, 600-muffler, 121-heat dissipation slot structure. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of the first, second, and third, it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] like Figures 1 to 4As shown, the double-headed motor according to the first embodiment of the utility model includes a housing 100, a drive module 200, a front cover 300 and a rear cover 400. The housing 100 is roughly rectangular, and its outer side surfaces are all smooth. The front side and the rear side of the housing 100 are both open sides, which are used to be connected to the front cover 300 and the rear cover 400 respectively. The housing 100 is provided with a cavity 110 and a plurality of internal ventilation channels 120 inside. The cavity 110 and all the internal ventilation channels 120 extend to the front side and the rear side of the housing 100, that is, the cavity 110 and all the internal ventilation channels 120 are connected to the housing 100. In this embodiment, the number of the internal ventilation channels 120 is four, and the four internal ventilation channels 120 are distributed in a matrix around the periphery of the cavity 110, and all the internal ventilation channels 120 are not directly connected to the cavity 110. Since the housing 100 is made of aluminum, it has a high heat transfer efficiency. Therefore, when heat is generated in the cavity 110, the heat will be quickly transferred to all the internal ventilation channels 120. Therefore, the utility model can suppress the temperature rise in the cavity 110 by cooling and dissipating the internal ventilation channels 120.

[0033] Further, the driving module 200 is installed in the cavity 110. The driving module 200 can be selected as a conventional double-acting movement, which mainly includes a winding 210, a permanent magnet (not shown in the drawings) and a driving shaft 220. The permanent magnet is arranged outside the winding 210. The driving shaft 220 is assembled with the winding 210. When the winding 210 is energized, under the control of a driver (not shown in the drawings), the winding 210 can rotate in the magnetic field, thereby driving the driving shaft 220 to rotate. The front cover 300 and the rear cover 400 are both provided with a bearing chamber 301, and a bearing 230 is installed in each of the bearing chambers 301. Two end covers are respectively extended from the two ends of the driving shaft 220 and are supported by their respective bearings 230 to achieve the rotation connection of the driving shaft 220 and improve the rotation quality of the driving shaft 220.

[0034] When the tool is a radial processing tool such as a saw blade or a milling cutter, two clips 240 are installed at either end of the drive shaft 220, and a clamping space is formed between the two clips 240. Before installing the tool, the outermost clip 240 is first removed, and then the tool is placed on the drive shaft 220. Finally, the removed clip 240 is reinstalled and abutted against the tool to lock the position of the tool on the drive shaft 220, so that the tool can rotate with the drive shaft 220. When the tool is an axial processing tool such as a drill bit or a boring tool, a drill chuck (not shown in the drawings) is installed at either end of the drive shaft 220, and the tool is locked in the drill chuck, so that the tool can rotate with the drive shaft 220.

[0035] like Figure 4 and Figure 5 As shown, the front cover 300 is provided with a first air duct 310, the first air duct 310 includes a first straight channel 311 located at the top of the front cover 300, the first straight channel 311 is provided with an air duct inlet 312 penetrating to the top surface of the front cover 300, the air duct inlet 312 is connected to the air pipe joint 500, the first straight channel 311 is provided with two first air guide holes 313 on the side of the front cover 300 close to the housing 100, and the two first air guide holes 313 are respectively connected to the two inner ventilation channels 120 located above. At the same time, the front cover 300 is provided with a plurality of air duct outlets 320, and all the air duct outlets 320 are respectively connected to the two inner ventilation channels 120 located below. Since the air duct inlet 312 and the air duct outlet 320 cannot be connected through the first air duct 310, the utility model prolongs the air flow path to improve the heat dissipation effect.

[0036] At the same time, the rear end cover 400 is provided with a second air duct 410, which includes two second linear channels 411 parallel to each other, the two second linear channels 411 are not connected to each other, and the second linear channels 411 are orthogonal to the first linear channels 311. Each of the second linear channels 411 is provided with two second air guide holes 412 on the side of the rear end cover 400 close to the housing 100, and the two second air guide holes 412 are respectively connected to the upper and lower inner ventilation channels 120, so that the first linear channel 311 and the two second linear channels 411 can be connected through the two inner ventilation channels 120 located at the upper part, and the air duct outlet 320 and the two second linear channels 411 can be connected through the two inner ventilation channels 120 located at the lower part.

[0037] With the above structure, when it is necessary to dissipate heat for the double-headed motor, the air pipe is first inserted into the air pipe joint 500, and the compressed air is introduced into the first straight channel 311 through the air duct inlet 312. Since the air duct inlet 312 and the air duct outlet 320 cannot be connected through the first air duct 310, the compressed air in the first straight channel 311 flows along the two first air guide holes 313 to the two inner ventilation channels 120 located above, and continues to flow along the two second air guide holes 412 to the two second straight channels 411 respectively. Subsequently, the compressed air in the two second straight channels 411 flows along the two second air guide holes 412 to the two inner ventilation channels 120 located below, and finally the compressed air in the two inner ventilation channels 120 leaves from the multiple air duct outlets 320. The above-mentioned air flow direction flows through the shell 100 and the two end covers. Since the compressed air flows quickly in the air duct, it can take away a large amount of heat in a short time. Therefore, this structure can effectively dissipate the heat of the double-headed motor. While reducing heat accumulation, it also eliminates the structure of an external heat dissipation slot, avoids the accumulation of metal chips, and is beneficial to improving the heat dissipation effect of the double-headed motor.

[0038] In other embodiments, the first air duct 310 also includes a third linear channel (not shown in the drawings) located at the bottom of the front end cover 300. In this case, the third linear channel is parallel to the first linear channel 311, and all air duct outlets 320 are connected through the third linear channel, without being limited to the above embodiments.

[0039] In some embodiments of the utility model, in order to facilitate the processing of the first linear channel 311, the first linear channel 311 passes through the front end cover 300, so as to process the first linear channel 311 by drilling or boring. However, since it is necessary to avoid direct communication between the first linear channel 311 and the external environment during use, tapping can be performed at both ends of the first linear channel 311, and two first plugs 314 with threads are used to respectively block the two ends of the first linear channel 311, thereby avoiding air leakage. Similarly, in order to facilitate the processing of the second linear channel 411, the second linear channel 411 passes through the rear end cover 400, so as to process the second linear channel 411 by drilling or boring. However, since it is necessary to avoid direct communication between the second linear channel 411 and the external environment during use, tapping can be performed at both ends of the second linear channel 411, and two second plugs 414 with threads are used to respectively block the two ends of the second linear channel 411, thereby avoiding air leakage.

[0040] In some embodiments of the utility model, in order to further improve the heat dissipation performance, the first straight channel 311 and the second straight channel 411 are respectively provided with a first guide hole 315 and a second guide hole 415 connected to the cavity 110, so that the compressed air can enter the cavity 110, thereby directly dissipating the heat of the driving module 200. The above-mentioned setting is suitable for a driving module 200 with high power and low requirements for the working environment, but for a driving module 200 with low power or strict sealing requirements for the cavity 110, it is not necessary to introduce compressed air into the cavity 110. To this end, a first seal (not shown in the drawings) and a second seal (not shown in the drawings) can be detachably connected to the first guide hole 315 and the second guide hole 415, respectively, to provide a choice for whether the compressed air enters the cavity 110 or not, so as to meet the different working requirements of the double-headed motor.

[0041] like Figure 1 As shown, in some embodiments of the present invention, in order to reduce the wind noise, each of the air duct outlets 320 is connected to a muffler 600. Since the muffler 600 can use an existing structure, the present invention will not describe the specific structure of the muffler 600 in detail.

[0042] In some embodiments of the present invention, in order to better dissipate the heat of the driving module 200 in the cavity 110, each of the inner ventilation channels 120 has a heat dissipation slot structure 121 to improve the heat exchange rate between the cavity 110 and the inner ventilation channel 120. Although the inner ventilation channel 120 has the heat dissipation slot structure 121, since the inner ventilation channel 120 is not in direct contact with the external environment, its heat dissipation slot structure 121 will not accumulate metal chips, and the heat exchange rate with the cavity 110 can be maintained for a long time.

[0043] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. Double-head motor, characterized in that: include: A shell (100) having open side surfaces on both the front and rear sides, a cavity (110) and a plurality of internal ventilation channels (120) being provided inside the shell (100), the cavity (110) and all the internal ventilation channels (120) extending to the front and rear sides of the shell (100); end covers, the number of which is two, the two end covers being connected to the front side and the rear side of the housing (100) respectively, the end cover located on the front side being provided with an air duct inlet (312), an air duct outlet (320) and a first air duct (310), the end cover located on the rear side being provided with a second air duct (410), the first air duct (310) and the second air duct (410) being connected via the plurality of internal ventilation channels (120), and the air duct inlet (312) and the air duct outlet (320) being unable to be connected via the first air duct (310); A driving module (200) is installed in the housing (110); the driving module (200) is provided with a rotatable driving shaft (220); two end covers are respectively extended from both ends of the driving shaft (220).

2. The double-headed motor according to claim 1, characterized in that: The number of the internal ventilation channels (120) is four, and the four internal ventilation channels (120) are distributed in a matrix around the periphery of the cavity (110).

3. The double-headed motor according to claim 1 or 2, characterized in that: Each of the inner ventilation channels (120) has a heat dissipation slot structure (121).

4. The double-headed motor according to claim 2, characterized in that: The first air duct (310) comprises a first straight channel (311), and the first straight channel (311) is provided with the air duct inlet (312); the second air duct (410) comprises two second straight channels (411) which are parallel to each other but not connected, and the first straight channel (311) is orthogonal to the second straight channel (411).

5. The double-headed motor according to claim 4, characterized in that: The first linear channel (311) passes through the end cover located at the front side, and both ends of the first linear channel (311) are connected to the first plug (314); the second linear channel (411) passes through the end cover located at the rear side, and both ends of the second linear channel (411) are connected to the second plug (414).

6. The double-headed motor according to claim 4, characterized in that: There are a plurality of air duct outlets (320), and all of the air duct outlets (320) are respectively connected to the two inner ventilation channels (120).

7. The double-headed motor according to claim 1, characterized in that: The first air duct (310) and the second air duct (410) are respectively provided with a first air guide hole (315) and a second air guide hole (415) which are connected to the containing cavity (110).

8. The double-headed motor according to claim 7, characterized in that: The first flow guide hole (315) and the second flow guide hole (415) are respectively detachably connected with a first sealing member and a second sealing member.

9. The double-headed motor according to claim 1, characterized in that: The air duct inlet (312) is connected to an air pipe joint (500); and the air duct outlet (320) is connected to a muffler (600).

10. The double-headed motor according to claim 1, characterized in that: Each of the end covers is provided with a bearing chamber (301), and each of the bearing chambers (301) is installed with a bearing (230) matching the drive shaft (220).

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