Brushless motor and thicknessing machine adopting same

Abstract

The utility model relates to the technical field of wood processing equipment, in particular to a brushless motor and a thicknessing machine adopting the brushless motor, the brushless motor comprises a motor shell, a motor shaft and a machine core connected with the motor shaft, the machine core is composed of a rotor and a stator, one end of the motor shell is connected with an electric control device, the other end of the motor shell is connected with a reduction gearbox, and the reduction gearbox is connected with the motor shaft. One end of the motor shaft extends into a shell of the electric control device, the other end of the motor shaft penetrates through the cooling fan and then is connected with the reduction gearbox, an air outlet is formed in the side wall of the motor shell, the rotating motor shaft drives the cooling fan to rotate, air is sucked in through a cooling grid at the end of the electric control device, and the air flows to the air outlet in the axial direction of the motor shaft and is exhausted. According to the brushless motor, the heat dissipation efficiency of the brushless motor is improved, the possibility of overheating damage of the brushless motor in the working process is greatly reduced, and the brushless motor has the advantages of high efficiency, long service life, low maintenance, excellent speed regulation performance and precision, low noise, low interference and the like.

Description

Technical Field

[0001] This application relates to the field of wood processing equipment technology, and in particular to a brushless motor and a planer using the brushless motor. Background Technology

[0002] A planer is an indispensable tool in wood processing. It can not only quickly and smoothly plan the surface of wood, but also adjust the planing thickness according to processing needs to meet diverse wood processing requirements.

[0003] In existing technology, planers mainly use brushed motors to drive a horizontally parallel rotary planer shaft and pressure rollers to rotate, in conjunction with a liftable working surface and feeding device to achieve wood processing. Among them, brushed motors are widely used in planers due to their relatively low price, rapid start-up, timely braking, smooth speed regulation, and simple control structure. However, brushed motors also have some disadvantages, such as high noise during operation, easy heat generation, and relatively short lifespan. In addition, carbon brushes are consumables and need to be replaced regularly. In comparison, brushless motors have higher energy efficiency, lower noise and vibration, longer service life, and fewer maintenance requirements. These advantages make brushless motors an ideal choice for upgrading and retrofitting planers. However, brushless motors require a separate control box to frequently control the motor speed, direction, motor braking, and other working modes. This makes the control box prone to overheating and damage during operation. Therefore, the overload and overheating problem of the brushed motor control box is an issue that needs to be addressed in the application of planers.

[0004] Therefore, there is an urgent need for a new type of planer with a structure that can achieve long-term high-performance operation. Utility Model Content

[0005] The purpose of this application is to provide a brushless motor and a planer using the brushless motor, so as to solve the problems of general performance, short life and high noise of planers using brushed motors in the prior art.

[0006] The embodiments of this application can be implemented through the following technical solutions:

[0007] A brushless motor includes a motor housing, a motor shaft, and a core connected to the motor shaft, wherein the core consists of a rotor and a stator.

[0008] One end of the motor housing is connected to an electronic control device, and the other end is connected to a gearbox. One end of the motor shaft extends into the housing of the electronic control device, and the other end passes through a cooling fan and connects to the gearbox. An air outlet is provided on the side wall of the motor housing. The rotating motor shaft drives the cooling fan to rotate and draws in air through the heat dissipation grille at the end of the electronic control device. The drawn-in air flows along the axial direction of the motor shaft to the air outlet and is discharged.

[0009] Furthermore, the inner cavity of the electronic control device is connected to the cavity of the motor housing, and the heat sink of the electronic control device extends circumferentially along the motor shaft and is disposed towards the motor shaft;

[0010] Under the action of the cooling fan, air is drawn in through the heat dissipation grille at the end of the electronic control device, passes sequentially through the radiator and the ventilation port of the motor housing, and flows through the rotor and stator of the mechanism to the outlet for discharge.

[0011] Furthermore, the air outlet is located at one end of the motor housing adjacent to the gearbox, and the cooling fan is an axial flow fan.

[0012] Furthermore, one end of the motor shaft extends through the electronic control device and is threaded at the end.

[0013] This application also provides a planer using the brushless motor, including the brushless motor as described above;

[0014] It also includes a cutter shaft mechanism, wherein the threaded interface end of the motor shaft drives the cutter shaft mechanism to rotate through a first transmission mechanism, and the outer surface of the cutter shaft mechanism is provided with a planer blade that rotates and cuts around the cutter shaft mechanism.

[0015] Furthermore, it also includes a workpiece feeding mechanism, the other end of the motor shaft transmits power outward through the gearbox, and the output end of the gearbox drives the workpiece feeding mechanism to rotate through the second transmission mechanism. The workpiece feeding mechanism is located on the inlet side or outlet side of the cutter shaft mechanism.

[0016] Furthermore, the number of workpiece feeding mechanisms is two, and the two workpiece feeding mechanisms are arranged in parallel along the material feeding direction, and are respectively located at the feed end and discharge end of the cutter shaft mechanism.

[0017] Furthermore, there is a chip removal gap between any of the workpiece feeding mechanisms and the cutter shaft mechanism, and the two chip removal gaps are interconnected, with one of the chip removal gaps located below the air outlet.

[0018] Furthermore, it also includes a dust collection hood, which is connected to the side of the air outlet and has an air inlet, which corresponds to the air outlet.

[0019] The brushless motor and the planer using the brushless motor provided in the embodiments of this application have at least the following beneficial effects:

[0020] The planer in this application uses a brushless motor instead of a traditional brushed motor. The structure of the brushless motor is adjusted so that the heat sink of the electronic control device is set in the same cavity as the motor shaft. With the addition of a cooling fan and an air outlet, the heat generated by the electronic control device can be guided along the axial airflow to the air outlet during the rotation of the cooling fan, which improves the heat dissipation efficiency of the brushless motor and greatly reduces the possibility of overheating damage during operation. This makes the planer have advantages such as high efficiency, long life, low maintenance, excellent speed regulation performance and precision, low noise and low interference.

[0021] The planer described in this application utilizes the airflow at the air outlet to guide the wood chips generated during the planing process to the dust collection hood. It effectively utilizes the power of the planer during normal operation to remove chips, eliminating the need for an additional power mechanism. This greatly improves the efficiency of wood chip collection and has advantages such as high chip removal efficiency, low pollution, energy saving, reduced production costs, and strong practicality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the disassembled state of a brushless motor according to this application;

[0023] Figure 2 This is a schematic diagram of the structure in this application where the motor shaft connects the core and the cooling fan;

[0024] Figure 3 This is a schematic diagram of the overall structure of a planer using the brushless motor according to this application;

[0025] Figure 4 , Figure 5 These are schematic diagrams of the overall structure of the planer assembly in this application from different perspectives.

[0026] Numbers in the diagram

[0027] 1-Base; 2-Frame; 3-Brushless motor; 30-Motor housing; 31-Electrical control device; 32-Motor shaft; 33-Motor mechanism; 34-Cooling fan; 36-Air outlet; 37-Radiator; 39-Gearbox; 4-Cut shaft mechanism; 5-Workpiece feeding mechanism; 6-Dust collection hood; 71-First transmission mechanism; 72-Second transmission mechanism; 8-Panel. Detailed Implementation

[0028] The present application will now be further described based on preferred embodiments and with reference to the accompanying drawings.

[0029] In addition, for ease of understanding, various components on the drawings have been enlarged (thickened) or reduced (thinned), but this is not intended to limit the scope of protection of this application.

[0030] Singular forms of words also include plural meanings, and vice versa.

[0031] In the description of the embodiments of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, in the description of this application, in order to distinguish different units, the terms "first," "second," etc. are used in this specification, but these are not limited by the manufacturing order, nor should they be construed as indicating or implying relative importance. Their names may differ in the detailed description and claims of this application.

[0032] The vocabulary used in this specification is for illustrative purposes and is not intended to limit the scope of this application. It should also be noted that, unless otherwise expressly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection via an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of these terms in this application.

[0033] Figure 1 This is a schematic diagram of the disassembled state of a brushless motor. Figure 2 This is a schematic diagram of the structure in this application where the motor shaft connects the core and the cooling fan, as shown. Figure 1 , Figure 2 As shown, a brushless motor includes a motor housing 30, an electronic control device 31, a motor shaft 32, and a core 33 connected to the motor shaft 32. The core 33 consists of a rotor and a stator. The rotor is fixedly connected to the middle of the motor shaft 32, and the stator is fixed inside the motor housing 30 and disposed outside the rotor. The electronic control device 31 is connected to the end of the motor housing 30. One end of the motor shaft 32 extends into the housing of the electronic control device 31, and the other end passes through a cooling fan 34 and is connected to a gearbox 39. An air outlet 36 is provided on the side wall of the motor housing 30. The rotating motor shaft 32 drives the cooling fan 34 to rotate and draws in air through the heat dissipation grille at the end of the electronic control device 31. The air flows along the axial direction of the motor shaft 32 and is discharged at the air outlet 36. Under the action of the cooling fan 34, the flowing air carries away the heat from the electronic control device 31, thereby improving the heat dissipation efficiency.

[0034] In some preferred embodiments, the inner cavity of the electronic control device 31 is connected to the cavity of the motor housing 30, and the heat sink 37 of the electronic control device 31 extends circumferentially along the motor shaft 32 and is disposed toward the motor shaft 32 to accelerate the heat dissipation efficiency of the electronic control device 31.

[0035] In some preferred embodiments, the air outlet 36 is located at one end of the motor housing 30 adjacent to the gearbox 39, and the cooling fan 34 is an axial flow fan, so that the heat dissipated by the electronic control device 31 is discharged from the other end of the motor through the axial airflow, which can not only improve heat dissipation efficiency and optimize temperature distribution, but also enhance motor performance and stability.

[0036] Under the action of the cooling fan 34, air is drawn in through the cooling grille at the end of the electronic control device 31, passes through the radiator 37 and the ventilation port of the motor housing 30 in sequence, passes through the rotor and stator of the core 33, and flows to the air outlet 36 for discharge.

[0037] In some preferred embodiments, to improve the heat dissipation efficiency at the air outlet 36, an electric fan, industrial vacuum cleaner, or other suction device can be connected to the air outlet 36.

[0038] In some preferred embodiments, one end of the motor shaft 32 extends through the outside of the electronic control device 31, and the end is provided with a thread for connection with transmission components such as pulleys, so that both ends of the motor shaft 32 can be driven.

[0039] Therefore, this application also provides a planer employing this brushless motor, such as... Figure 3 , Figure 4 As shown, a planer using this brushless motor includes a base 1 and a frame 2 connected to the base 1, a planer assembly, and a pallet 8. The base 1 and the frame 2 are connected to form a housing with an internal accommodating space. The planer assembly is connected inside the housing. Two pallets 8 are provided, one at the inlet and one at the outlet of the base 1. In the working state, each pallet 8 extends outward along the feeding and discharging direction of the planer assembly to support the wood and provide support for the wood.

[0040] In some preferred embodiments, the planer assembly consists of a brushless motor 3, a cutter shaft mechanism 4, a workpiece feeding mechanism 5, and a dust collection hood 6. The threaded interface end of the motor shaft 32 drives the cutter shaft mechanism 4 to rotate through a first transmission mechanism 71. The first transmission mechanism 71 can be optional, such as belt drive, gear drive, etc. In this embodiment, it is belt drive.

[0041] In some preferred embodiments, the outer surface of the cutter shaft mechanism 4 is provided with a planer blade that rotates and cuts around the cutter shaft mechanism 4, so that when the motor shaft 32 rotates, it can drive the planer blade on the cutter shaft mechanism 4 to rotate and cut the wood through the first transmission mechanism 71.

[0042] In some preferred embodiments, the other end of the motor shaft 32 transmits power outward through the reduction gearbox 39, and the output end of the reduction gearbox 39 drives the workpiece feeding mechanism 5 to rotate through the second transmission mechanism 72, such as... Figure 5 As shown, the second transmission mechanism 72 can be selected, such as belt drive, gear drive, etc. In this embodiment, it is chain drive. Under the rotation of the motor shaft 32, the workpiece feeding mechanism 5 rotates accordingly, thereby driving the fed material to be transported from the feed port end to the discharge port.

[0043] In some preferred embodiments, the number of workpiece feeding mechanisms 5 is two. The two workpiece feeding mechanisms 5 are arranged parallel to each other along the material feeding direction and are respectively arranged on both sides of the cutter shaft mechanism 4 to realize automatic feeding and discharging, thereby improving the efficiency of material conveying.

[0044] A chip removal gap exists between any of the workpiece feeding mechanisms 5 and the cutter shaft mechanism 4. The two chip removal gaps are interconnected, with one chip removal gap located below the air outlet 36. The dust collection hood 6 is connected to the side of the air outlet 36, and an air inlet is provided on the dust collection hood 6. The air inlet of the dust collection hood 6 corresponds to the air outlet 36, so that when the motor shaft 32 drives the cooling fan 34 to rotate, the generated airflow will enter the dust collection hood 6 through the air outlet 36. The negative pressure generated below the air outlet 36 will suck the wood chips generated at the chip removal gap into the dust collection hood 6. At this time, the air outlet of the dust collection hood 6 only needs to be connected to a vacuum cleaner to collect the generated wood chips.

[0045] The specific embodiments of this application have been described in detail above. For those skilled in the art, several improvements and modifications can be made to this application without departing from the principle of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A brushless motor, comprising a motor housing (30), a motor shaft (32), and a core (33) connected to the motor shaft (32), wherein the core (33) comprises a rotor and a stator, characterized in that: One end of the motor housing (30) is connected to an electronic control device (31), and the other end is connected to a gearbox (39). One end of the motor shaft (32) extends into the housing of the electronic control device (31), and the other end passes through the cooling fan (34) and is connected to the gearbox (39). An air outlet (36) is provided on the side wall of the motor housing (30). The rotating motor shaft (32) drives the cooling fan (34) to rotate and draws in air through the heat dissipation grille at the end of the electronic control device (31). The drawn-in air flows along the axial direction of the motor shaft (32) to the air outlet (36) and is discharged.

2. The brushless motor according to claim 1, characterized in that: The inner cavity of the electronic control device (31) is connected to the cavity of the motor housing (30), and the heat sink (37) of the electronic control device (31) extends circumferentially along the motor shaft (32) and is disposed toward the motor shaft (32); Under the action of the cooling fan (34), air is drawn in through the cooling grille at the end of the electronic control device (31), passes through the vent of the radiator (37) and the motor housing (30) in sequence, passes through the rotor and stator of the core (33), and flows to the air outlet (36) for discharge.

3. The brushless motor according to claim 1, characterized in that: The air outlet (36) is located at one end of the motor housing (30) near the gearbox (39), and the cooling fan (34) is an axial flow fan.

4. The brushless motor according to claim 1, characterized in that: One end of the motor shaft (32) extends through the electronic control device (31) and is threaded at the end.

5. A planer employing the brushless motor, comprising the brushless motor (3) as described in any one of claims 1 to 4, characterized in that: It also includes a cutter shaft mechanism (4), the threaded interface end of the motor shaft (32) drives the cutter shaft mechanism (4) to rotate through the first transmission mechanism (71), and the outer surface of the cutter shaft mechanism (4) is provided with a planer blade that rotates and cuts around the cutter shaft mechanism (4).

6. The planer using the brushless motor according to claim 5, characterized in that: It also includes a workpiece feeding mechanism (5), the other end of the motor shaft (32) transmits power outward through the gearbox (39), and the output end of the gearbox (39) drives the workpiece feeding mechanism (5) to rotate through the second transmission mechanism (72). The workpiece feeding mechanism (5) is located on the inlet side or outlet side of the cutter shaft mechanism (4).

7. The planer using the brushless motor according to claim 6, characterized in that: The number of workpiece feeding mechanisms (5) is two. The two workpiece feeding mechanisms (5) are arranged in parallel along the material feeding direction and are respectively located at the feed end and discharge end of the cutter shaft mechanism (4).

8. The planer using the brushless motor according to claim 6, characterized in that: There is a chip removal gap between any of the workpiece feeding mechanisms (5) and the cutter shaft mechanism (4), and the two chip removal gaps are connected to each other, with one of the chip removal gaps located below the air outlet (36).

9. The planer using the brushless motor according to claim 5, characterized in that: It also includes a dust collection hood (6), which is connected to the side of the air outlet (36). The dust collection hood (6) has an air inlet, and the air inlet of the dust collection hood (6) corresponds to the air outlet (36).

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