CN106863502B - Integrated dust absorption motor and miter saw - Google Patents
Integrated dust absorption motor and miter saw Download PDFInfo
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- CN106863502B CN106863502B CN201610476896.XA CN201610476896A CN106863502B CN 106863502 B CN106863502 B CN 106863502B CN 201610476896 A CN201610476896 A CN 201610476896A CN 106863502 B CN106863502 B CN 106863502B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G3/00—Arrangements for removing bark-zones, chips, waste, or dust, specially designed for use in connection with wood-working machine or in wood-working plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/02—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor characterised by a special purpose only
- B27B5/06—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor characterised by a special purpose only for dividing plates in parts of determined size, e.g. panels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/29—Details; Component parts; Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
- B27G19/02—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sawing (AREA)
Abstract
The integrated dust collection motor comprises a shell, wherein a stator is arranged in the shell, a rotor is arranged in the middle of the stator, the rotor is fixed with the shell through a front end bearing and a rear end bearing respectively, a dust collection device is arranged on the rotor, the dust collection device comprises a dust collection wind box and dust collection fan blades, the outlet end of the dust collection wind box is opposite to the blade sides of the dust collection fan blades, and the dust collection fan blades are fixedly connected with the rotor; the dust collection wind box is provided with an inlet end at the circumferential side of the rotor, a shell at the dust collection wind box part is provided with a dust collection port communicated with the inlet end, a shell at the dust collection fan blade part is provided with a dust outlet, and the dust collection port and the dust outlet are arranged on the side surface of the shell. The heat dissipation, dust collection and driving are arranged on the rotor to form the integrated dust collection motor with the dust collection function, and dust and the like do not need to be collected by a matched independent dust collection device, so that the cost is reduced, and the integrated dust collection motor is convenient to use and carry; when the dust collector is used for an electric tool, dust collection can be directly realized, and compared with the existing miter saw, the dust collection rate of the dust collector can reach more than 95%.
Description
Technical Field
The invention relates to a motor with a self-dust-absorption function, belongs to the technical field of electric tools, and particularly relates to an integrated dust-absorption motor and a miter saw.
Background
The motor is called as motor for short, and can also be called as motor, and is an electromechanical energy conversion device, including induction motor, series motor and direct current motor. The motor is that the rotor is placed in the rotating magnetic field produced by stator, under the action of rotating magnetic field a rotating torque is obtained, so that the rotor can be rotated to provide power source for exterior. Because the rotating speed is high, in order to cool the stator, the rotor and the carbon brush in the motor, a heat radiation fan is usually arranged at the end part of the rotor, an air inlet hole or an air outlet hole is arranged at the end part of the motor shell, and the purpose of heat radiation and cooling is achieved by blowing or sucking air along the heat radiation ribs of the machine body by the heat radiation fan. When the cooling fan works, a certain negative pressure can be generated in the middle area of the cooling fan, the negative pressure is used for being beneficial to improving the gas flowing performance and the cooling effect, however, due to the blocking of the stator, the rotor, the carbon brushes, the bearings or the gears and other parts, the middle area of the cooling fan is difficult to be better utilized, if the negative pressure area needs to be utilized, the length of the rotor needs to be prolonged to ensure the distance between the cooling fan and the adjacent parts, the axial length of the rotor and the length of the motor can be correspondingly increased, and the cost of the motor is increased.
In some occasions, such as electric tools like sanding machines, miter saws and the like, a large amount of dust and sawdust are generated when materials are cut, and if no protection measures are taken, a large amount of dust floats in the air and is sucked into human bodies; dust scattered to each corner of the room is particularly difficult to clean, and secondary pollution is easily caused. The direct operation worker or the coming home owner is the direct victim, dust is inhaled for a long time, pneumoconiosis, respiratory tract infection and the like are easily formed, and dust floating in the air is contacted with the skin to easily cause skin allergy and other symptoms.
At present, the electric tools in the market are not provided with a dust suction device, can generate a large amount of dust, fly into the air, pollute the environment, harm the health of human bodies and are extremely difficult to clean. Although some electric tools are provided with dust collection ports, the electric tools can be externally connected with special dust collection equipment to contain dust and sawdust, and have a certain dust collection effect, the general dust collection rate is poor, only 20-30% of the dust and the sawdust can be collected, and a large amount of dust and sawdust can be scattered in the air and around the electric tools. In addition, the cost is increased and the carrying is inconvenient when the dust collector is matched with independent external collecting equipment such as a dust collector to finish dust collection; the size of the dust collecting port is not easy to match with the size of the interface of the dust collector, and the use is very inconvenient. Especially for the decorating workers, the decorating places can be frequently changed, and in addition, more and more construction sites require dust-free decoration, the requirements of the workers are difficult to meet by common sanding machines, miter saws and the like.
Even in the existing dust-free sander, the dust suction effect of the sander can be improved by arranging the dust suction fan, the dust suction port on the grinding disc or the grinding cover and the dust collection port arranged on the periphery of the dust suction fan. However, due to the structure and other requirements, the number of the dust suction ports is limited, and the dust suction ports cannot cover all areas where dust is generated; in addition, the structure of the dust suction port and the dust suction fan is similar to that of the traditional motor radiating fan, because of the blocking of the components such as the bearing, the gear and the like, the optimal negative pressure area in the middle of the dust suction fan is difficult to be better utilized, and the factors greatly reduce the dust suction efficiency of the dust-free sander.
For example, chinese patent application No. 200810019383.1, published as 6.6.2012 discloses a "motor for a vacuum cleaner", which includes a housing, a stator core, a rotor core, a stator impeller, a fan housing, a rotor impeller, a stator winding, a rotor winding, and a heat dissipation fan, wherein the heat dissipation fan is disposed between a bearing and a commutator and fixed to an output shaft, and a gap is left between an outer circumferential edge of a fan blade of the heat dissipation fan and an inner circumferential wall of the housing. The invention improves the heat radiation performance of the motor by adjusting the position of the commutator to be close to the heat radiation fan, but the structure and the principle of air flow during the heat radiation are the same as the mode of the traditional motor heat radiation fan; in addition, the motor of the cleaner does not solve the problem of integral dust collection.
Chinese patent (application date 201220248866.0, grant announcement day 2012 and 12 months 12 days) discloses "a wall body grinder", include the casing and install the motor in the casing, the rotor shaft transmission of motor is connected the part that stretches out the casing and is installed sand table and sand table cover, electric motor rotor has the rotor of double fan, install radiator fan on the rotor shaft of double fan, dust collecting fan is installed in radiator fan's the outside. The utility model discloses a when wall body grinder sanded and handled, the wall surface was polished in the sand table rotation, and the sand table cover gathers the dust, and dust absorption fan is rotatory to be made the casing in produce the negative pressure, and the dust passes through the suction chamber along with the air current and gets into the dust exhaust pipe and is collected in the dust bag. Compared with the existing dust collection mode of connecting a dust collection device, the wall sander has a compact structure, can improve dust collection effect and efficiency, but cannot cover all areas generating dust because the dust collection port is positioned between the sand plate and the sand plate cover; in addition, due to the blocking of the bearing, the gear and other parts, the optimal negative pressure area in the middle of the dust suction fan cannot be utilized, so that the dust suction rate of the wall sanding machine is limited.
Chinese patent (application date 201210585166.5, application publication date 2014 7/2) discloses an "automatic dust suction system and sawing machine applied to a sawing machine", comprising: the fan is connected to one end of a motor shaft of the saw machine and is driven by the motor shaft to rotate together with a saw blade of the saw machine; the shell is arranged on a motor shell of the saw machine, can accommodate the fan, and is provided with a dust collection port and a dust collection port; the dust absorption pipe comprises a first end portion, a pipe body and a second end portion, wherein the first end portion is connected to the dust absorption opening, the pipe body is a soft pipe body and is arranged between the first end portion and the second end portion, and the dust absorption pipe absorbs sawdust dust of the saw machine through the second end portion.
The invention belongs to a sawing machine for directly mounting a saw blade on a motor shaft, and compared with the sawing machine with the same structure, the sawing machine only uses a pipe body to directly communicate a dust collecting port and a dust collecting port of a fan, the dust collecting port and the dust collecting port of the fan and the working mode thereof are similar to the prior motor cooling fan; the pipe arranged outside the motor can influence the operation of the saw and increase the resistance of a dust suction passage; in addition, most dust and sawdust cannot be collected by the suction force of the single fan, the rear end of the motor cannot directly cool the motor along the direction of the motor shaft due to the addition of the dust collection fan blades, and the side face of the motor is provided with the air inlet to influence the heat dissipation effect. Therefore, the dust collection rate of the saw is low, and the use is inconvenient.
In summary, how to make the motor achieve a better self-dust-collecting function is a technical problem in the field of electric tools.
Disclosure of Invention
The invention aims to provide an integrated dust collection motor and a miter saw which have different concepts from those of the prior art, are professional equipment for realizing integrated high-efficiency dust collection and solve the problems of complex dust collection structure, low dust collection rate and poor effect in the conventional electric tool.
The invention is realized by the following technical scheme:
the integrated dust collection motor comprises a shell, wherein a stator is arranged in the shell, a rotor is arranged in the middle of the stator, the rotor is fixed with the shell through a front end bearing and a rear end bearing respectively, a dust collection device is arranged on the rotor, the dust collection device comprises a dust collection wind box and dust collection fan blades, the outlet end of the dust collection wind box is opposite to the blade sides of the dust collection fan blades, and the dust collection fan blades are fixedly connected with the rotor; the dust collection wind box is provided with an inlet end at the circumferential side of the rotor, a shell at the dust collection wind box part is provided with a dust collection port communicated with the inlet end, a shell at the dust collection fan blade part is provided with a dust outlet, and the dust collection port and the dust outlet are arranged on the side surface of the shell.
The integrated dust collection motor provided by the invention has the advantages that the heat dissipation fan blades and the dust collection device can be simultaneously installed on one motor shaft, namely the rotor, and the outer end of the rotor, which extends out of the shell, can be directly used for driving external equipment. The dust collection device is provided with the dust collection wind box and the dust collection fan blade, the outlet end of the dust collection wind box is opposite to the blade side of the dust collection fan blade, the dust collection fan blade can be arranged by moving inwards from the end of the traditional motor through the innovative dust collection wind box, and the dust collection port and the dust outlet can be arranged on the side face of the shell body at the same time instead of being arranged on the end of the shell body and the side face of the shell body respectively. When the dust collection fan blade rotates, the outlet end of the dust collection fan box faces the blade side of the dust collection fan blade, and the middle area of the dust collection fan blade is not blocked by a bearing, a gear and the like except a rotor, so that negative pressure generated when the dust collection fan blade rotates can be fully utilized for dust collection. Dust, saw dust and the like enter the dust collection air box from the dust collection opening and the inlet end, are concentrated in the middle area of the dust collection fan blade, are thrown out from the tangential direction of the periphery of the dust collection fan blade, and are finally directly collected from the dust outlet. The dust collection air box and the dust collection fan blade form an air duct structure, and the dust collection fan blade rotates in the air duct to throw out the gas containing dust in the air duct from the dust outlet. When the dust collection fan blade rotates, negative pressure is formed in the middle area, and under the action of pressure, dust and sawdust can be sucked into the air cylinder through the dust collection air box and then thrown out from the tangential direction of the periphery of the dust collection fan blade to form dust collection circulation.
The integrated dust collection motor is characterized in that the shell is composed of a motor cover and an end cover, wherein the motor cover is arranged on the left side and the right side of the shell.
As above, the dust collection air box is arranged between the dust collection fan blade and the stator, the sealing cover is arranged between the dust collection fan blade and the dust collection air box, the middle of the sealing cover is provided with the ventilation hole, and the ventilation hole is matched with the concave part on the side of the dust collection fan blade.
According to the integrated dust collection motor, the dust collection port of the shell and/or the inlet end of the dust collection wind box are/is provided with the safety protection grid plate.
Miter saw, including base, workstation, baffle and hand (hold), the rear end installation fixed bolster of workstation, the installation movable support of fixed bolster, the installation of activity shelf location as above the integral type dust absorption motor, the first drive mechanism of tip installation that the rotor stretches out the casing, on the casing or the fixed guard shield of installation of activity shelf location, be equipped with the pivot that is used for installing the saw bit on the fixed guard shield, lie in first drive mechanism and install second drive mechanism in the pivot with one side, first drive mechanism can drive the action of second drive mechanism, the dust absorption mouth of casing sets up the tangential direction at the saw bit.
The invention provides a miter saw, belonging to an electric tool with a motor arranged at the rear end of a worktable and capable of moving along with a handle. A first transmission mechanism is arranged on a motor shaft, namely a rotor, tool pieces such as saw blades are arranged on a second transmission mechanism, and the first transmission mechanism and the second transmission mechanism can be matched to drive the saw blades to perform cutting operation. The fixed guard shield of periphery installation of saw bit for the protection safety, the dust absorption mouth is located the rear side of saw bit, is located its tangential direction. Because the dust collection air box and the dust collection fan blade arranged in the integrated dust collection motor form an air duct structure, the dust collection fan blade rotates in the air duct to throw out the internal gas containing dust from the dust outlet. When the dust collection fan blade rotates, the outlet end of the dust collection air box faces the blade side of the dust collection fan blade, and the middle area of the dust collection fan blade is not blocked by a bearing, a gear and the like except a rotor, so that dust and sawdust can be sucked into the air duct through the dust collection port by completely utilizing the negative pressure area in the middle of the dust collection fan blade under the action of pressure, and then are thrown out by the dust collection fan blade from the tangent line of the periphery of the dust collection fan blade to form dust collection circulation. Thereby realizing better dust collection effects of dust, sawdust and the like and better dust collection rate.
According to the miter saw, the dust collecting device is arranged between the dust suction port and the workbench and comprises the collecting baffle, the lower end of the collecting baffle is fixedly connected with the middle connecting part on the rear side of the baffle, the upper end of the collecting baffle is arranged on the outer side of the dust suction port, the collecting baffle can movably surround and block the outer side of the saw blade, and the front surface of the collecting baffle forms the dust collecting port.
According to the miter saw, the first transmission mechanism is the belt pulley, the second transmission mechanism is the gear, and the intermediate conversion component is arranged between the belt pulley and the gear for transmission.
As the miter saw, the first transmission mechanism and the second transmission mechanism are belt pulleys, 2 belt pulleys are directly connected through the belt or are transmitted through the middle belt and the belt pulleys, and the peripheries of the belt pulleys and the belt are provided with the protective covers.
In the miter saw, the first transmission mechanism and the second transmission mechanism are gears, and 2 gears are meshed or are transmitted through an intermediate gear.
As for the miter saw, the dust outlet is positioned above the rear end of the worktable, and a dust collecting bag is arranged on the dust outlet.
The invention has the advantages that:
1. according to the integrated dust collection motor, the heat dissipation, dust collection and driving are arranged on one rotor to form an integrated structure with a dust collection function, so that the dust collection rate is obviously improved; the dust collector does not need to be additionally used for processing dust and the like, so that the cost can be well reduced, and the carrying is convenient. The dust collector is matched and arranged on the electric tool, and can directly collect dust, so that the problem that the dust collector is not matched with an external dust collector interface can be avoided.
2. A rotor, namely a motor shaft is provided with a heat dissipation fan blade and a dust suction device, and the outer end of the stator extending out of the shell is used for driving external equipment. The dust collection device is provided with a dust collection wind box and dust collection fan blades, the outlet ends of the dust collection wind box are opposite to the blade sides of the dust collection fan blades, and the dust collection fan blades can be arranged in a moving mode from the end portion of a traditional motor through the innovative arrangement of the dust collection wind box, so that the power balance performance of the motor is improved; the dust collection port and the dust outlet can be arranged on the outer side of the shell at the same time, but not in the existing motor, one is arranged at the end part of the motor, and the other is arranged on the outer side of the shell, in particular to the improvement of the dust collection port, the motor is convenient to be matched with an electric tool for use, the structure of various electric tools can be compact, scientific and reasonable, and the overall structure and performance of the electric tool can be optimized and improved.
3. The miter saw adopts the cooperation of the integrated dust collection motor, has a compact integral structure, and is convenient to carry and move; the dust collection fan blade utilizes the inertia of the rotation of the saw blade to collect dust, and compared with a dust collector which is separately matched with the outside of the dust outlet, the dust collection fan blade also greatly reduces the power consumption and reduces the use cost.
4. In the miter saw, under the action of the dust suction device, dust, sawdust and the like generated by cutting are sucked and lifted under the inertia of the rotation of the saw blade and directly enter the air duct to realize dust collection, so that the dust suction effect and the dust suction rate are obviously improved, and compared with the conventional miter saw, the miter saw has the dust suction effect of over 80 percent.
5. And a dust collecting device is arranged below the dust suction port and comprises a collecting baffle, the lower end of the collecting baffle is fixedly connected with the middle connecting part at the rear side of the baffle, and the upper end of the collecting baffle is fixed on the outer side of the dust outlet of the miter saw. Saw bit produced dust, saw-dust etc. in cutting process, most can be along its tangential direction motion under the rotatory saw bit drives, this part dust, the saw-dust etc. most can both enter into the dryer under the suction effect of cutting force and dust absorption fan blade in, even have few part dust, the dust absorption mouth has crossed under the drive of saw bit to the saw-dust, also can be by fixed guard shield, accomodate the baffle and stop, finally fall back to the peripheral baffle of accomodating of dust absorption mouth in, carry to suck away by the air current. Therefore, after the dust collecting device is installed, the total dust collection efficiency of the miter saw can reach more than 95%, and the dust-free operation in the true sense can be realized.
Simultaneously, should accomodate the baffle and have certain tensile property, its upper portion can be controlled, reciprocate along with workstation, handle, and its shape and structure have better tensile, deformability, consequently, homoenergetic under the different service condition of mitre saw all can realize better dust, sawdust and block and accomodate. In addition, after the containing baffle is arranged, because the airflow around the saw blade is blocked and concentrated, the heat dissipation of the saw blade is very beneficial, especially, the containing baffle is arranged to be of a horn-shaped structure with a small upper part and a large lower part, the airflow is increased at the dust suction port, the pressure increasing speed is increased, and the dust suction effect and the heat dissipation effect are overlapped.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a sectional view of an integrated dust suction motor of the present invention
Fig. 2 is an exploded view of the integrated dust suction motor of the present invention.
Fig. 3 is a perspective view of the end cap of fig. 1.
FIG. 4 is a perspective view of the miter saw of the present invention.
Fig. 5 is a right side view of fig. 4.
Fig. 6 is a left side view of fig. 4.
Fig. 7 is a front view of fig. 4.
Fig. 8 is a rear view of fig. 4.
Fig. 9 is a top view of fig. 4.
Reference numerals: 1-housing, 11-motor cover, 12-end cover, 13-stator, 14-rotor, 15-front bearing, 16-rear bearing, 17-dust-suction opening, 18-dust-discharge opening, 19-wind-guide cover, 191-sealing plate, 20-heat-dissipating fan blade, 2-dust-suction device, 21-dust-suction wind box, 211-inlet end, 212-outlet end, 213-safety-protection grid plate, 22-dust-suction fan blade, 221-blade, 23-sealing cover, 231-vent hole, 3-base, 4-workbench, 5-baffle, 6-handle, 7-fixed bracket, 8-movable bracket, 9-shield pull rod 10-fixed shield, 30-storage baffle, 31-intermediate connecting component, 32-dust receiving port, 33-protective cover, 34-dust collecting bag, 35-movable protective cover.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-3, the integrated dust collection motor of this embodiment includes a housing, a stator is installed in the housing, a rotor is installed in the middle of the stator, the rotor is fixed to the housing through a front end bearing and a rear end bearing, respectively, a dust collection device is installed on the rotor, the dust collection device includes a dust collection wind box and a dust collection blade, an outlet end of the dust collection wind box is opposite to a blade side of the dust collection blade, and the dust collection blade is fixedly connected to the rotor; the dust collection wind box is provided with an inlet end at the circumferential side of the rotor, a shell at the dust collection wind box part is provided with a dust collection port communicated with the inlet end, a shell at the dust collection fan blade part is provided with a dust outlet, and the dust collection port and the dust outlet are arranged on the side surface of the shell.
Specifically, in the integrated dust collection motor disclosed in this embodiment, the heat dissipation fan blade 20 and the dust collection device 2 can be simultaneously mounted on one motor shaft, i.e., the rotor 14, and the outer end of the rotor 14 extending out of the housing can be directly used for driving external equipment. The dust collection device 2 is provided with a dust collection wind box 21 and dust collection fan blades 22, the outlet end 212 of the dust collection wind box 21 is opposite to the blade sides of the dust collection fan blades 22, the dust collection fan blades 22 can be arranged in a mode of moving inwards from the end part of a traditional motor through the innovative arrangement of the dust collection wind box 21, and the dust collection port 17 and the dust outlet 18 can be arranged on the side surface of the shell 1 at the same time instead of being arranged on the end part and the side surface of the shell 1 respectively. When the dust collection fan blade 22 rotates, because the outlet end 212 of the dust collection fan box 21 faces the blade side of the dust collection fan blade 22, the middle area of the dust collection fan blade 22 except the rotor 14 has no blocking of bearings, gears and the like, and therefore, the negative pressure generated when the dust collection fan blade 22 rotates can be completely utilized for dust collection. Dust, sawdust and the like enter the dust collection wind box 21 from the dust collection port 17 and the inlet end 211, are concentrated in the middle area of the dust collection fan blade 22, are thrown out from the tangential direction of the periphery of the dust collection fan blade 22, and are finally directly collected from the dust outlet 18. The dust-absorbing wind box 21 and the dust-absorbing wind blade 22 form a wind barrel, and the dust-absorbing wind blade 22 rotates in the wind barrel to throw out the gas containing dust from the dust outlet 18 on the side surface of the shell 1. When the dust collection fan blade 22 rotates, negative pressure is formed in the middle area, and under the action of pressure, dust and sawdust can be sucked into the air duct through the dust collection air box 21 and then thrown out from the tangential direction of the periphery of the dust collection fan blade 22 to form dust collection circulation.
In fig. 2 and 3, arrows indicate the flow path of dust and sawdust which are sucked through the dust suction port 17, then sequentially pass through the air duct formed by the dust suction air box 21 and the dust suction fan blade 22, and finally are thrown out to the dust outlet 18 along a tangent line by the dust suction fan 22. In the dust collection process, except for the dust collection port 17 and the dust outlet 18, all parts through which dust and sawdust pass need to be hermetically connected with the shell 1 and the rotor 14, so that the wind is prevented from entering the motor, the dust collection effect is prevented from being influenced, and the dust and the like are prevented from entering the motor.
Compared with the heat dissipation or dust collection structure of the existing motor, the dust collection device has the advantages that the dust collection port 17 and the dust outlet 18 can be arranged on two sides of the shell 1 at the same time; the dust suction device 2 is positioned between the stator 13 and the external driving part of the rotor 14, which is beneficial to improving the dynamic balance performance of the motor, so that the motor has compact integral structure and is convenient to carry and move; when the dust collection fan blade 22 rotates, negative pressure is formed in the middle area, so that the dust collection efficiency is fundamentally improved, and compared with a dust collector which is separately matched with the outside of the dust outlet 18, the power consumption is greatly reduced, and the use cost is reduced. In order to be suitable for cutting materials and profiles with different hardness, such as wood, metal or plastic, the dust collection fan blade 22 can be made of materials, such as metal, plastic, resin and the like.
As shown in fig. 2, the housing 1 of the present embodiment is composed of a motor cover 11 and an end cover 12 on the left and right sides. The dust collection wind box 21 and the dust collection fan blade 22 are arranged in the end cover 12. The casing 1 is arranged into 2 parts, so that the motor is convenient to manufacture and maintain, and dust and sawdust airflow paths can be better isolated from the interior of the motor, so that the service quality of the motor is guaranteed, and the service life of the motor is prolonged.
As shown in fig. 2, the dust collection wind box 21 of this embodiment is disposed inside the dust collection wind blade 22, that is, between the stator 13 and the dust collection wind blade 22, a sealing cover 23 is installed between the dust collection wind blade 22 and the dust collection wind box 21, a ventilation hole 231 is disposed in the middle of the sealing cover 23, and the ventilation hole 231 is matched with an inward concave portion on the blade side of the dust collection wind blade 22. The dust collection wind box 21 can also be arranged at the outer side of the dust collection wind blade 22, but the axial length of the motor can be increased, so that the motor is not beneficial to being arranged on an electric tool in a matching way; under the condition that the sealing cover 23 is not arranged, the outlet end 212 of the dust collection wind box 21 can be tightened inwards to be close to the inward concave part on the blade side of the dust collection fan blade 22, but due to the adoption of the structural arrangement, a certain gap needs to be reserved as friction between the blades of the dust collection wind box 21 and the dust collection fan blade 22 needs to be avoided, and therefore dust, sawdust and the like can be directly discharged from the gap through the periphery of the dust collection fan blade 22 without passing through a negative pressure area of the dust collection fan blade 22, and the dust collection effect is influenced.
Further, in this embodiment, a safety protection grid plate 213 is installed at the dust suction port 17 of the housing 1 and/or the inlet end 211 of the dust suction wind box 21. The arrangement of the safety protection grid plate 213 can prevent large cut fragments from entering the air duct to cause the abrasion or blockage of internal parts, and meanwhile, in order to discharge the sucked small fragments from the air duct, the grid holes arranged on the safety protection grid plate 213 are square or circular, and the width of the grid holes is equal to or slightly smaller than the outermost distance between two adjacent blades on the dust collection fan blade 22.
As shown in fig. 4-9, the embodiment discloses a miter saw, which includes a base 3, a table 4, a baffle 5 and a handle 6, wherein a fixed bracket 7 is installed at the rear end of the table 4, a movable bracket 8 is installed on the fixed bracket 7, the movable bracket 8 is installed with an integrated dust-collecting motor as described above, a first transmission mechanism is installed at the end of the rotor 14 extending out of the housing 1, a fixed shield 10 is installed on the housing 1 or on the movable bracket 7, a rotating shaft for installing a saw blade is arranged on the fixed shield 10, a second transmission mechanism is installed on the rotating shaft located at the same side of the first transmission mechanism, the first transmission mechanism can drive the second transmission mechanism to move, and the dust-collecting port 17 of the housing 1 faces to the tangential direction of the saw blade.
The fixed shield 10 can be directly fixed on the integrated dust collection motor or fixedly connected with the movable support 8, as long as the dust collection opening 17 is ensured to be positioned in the tangential direction of the saw blade. In addition, the front side of the fixed shield 10 can be provided with a movable shield 35, the movable shield 35 is controlled by the linkage of the shield pull rod 9 hinged with the fixed support 7, so that the mechanical automatic opening or covering of the saw blade is facilitated, the saw blade can be conveniently cut and used, or the saw blade can be replaced and maintained.
The invention provides a miter saw, belonging to an electric tool with a motor arranged at the rear end of a worktable 4 and capable of moving along with a handle.A first transmission mechanism is arranged on a motor shaft, namely a rotor 14, a saw blade and other tool parts are arranged on a second transmission mechanism, and the first transmission mechanism and the second transmission mechanism can be matched to drive the saw blade and the like to carry out cutting operation. The fixed guard 10 is installed at the outer circumference of the saw blade for safe operation, and the dust suction port 17 is located at the rear side of the saw blade facing the tangential direction thereof. The dust collection wind box 21 and the dust collection fan blade 22 arranged in the integrated dust collection motor form a wind barrel, and the dust collection fan blade 22 rotates in the wind barrel to throw out the gas containing dust in the wind barrel from the dust outlet 18. When the dust collection fan blade 22 rotates, because the outlet end of the dust collection fan box 21 faces the blade side of the dust collection fan blade 22, and the middle area of the dust collection fan blade 22 except the rotor 14 is not blocked by a bearing, a gear and the like, dust and sawdust can be sucked into the air duct through the dust collection port 17 by completely utilizing the negative pressure area in the middle of the dust collection fan blade 22 under the action of pressure, and then are thrown out from the tangent line of the periphery of the dust collection fan blade 22 to form dust collection circulation. Therefore, better dust collection effects of dust, sawdust and the like and better dust collection rate can be realized.
Through dust extraction 2's effect, under the rotatory inertia of saw bit and the suction effect of dust absorption fan blade 22, dust, saw-dust etc. that the cutting produced, by the suction send and lift directly get into the dryer, dust absorption effect and efficiency obtain obviously promoting. Compared with the existing miter saw, the dust collection efficiency of the miter saw can reach more than 80%.
As shown in fig. 4, 5 and 6, in the present embodiment, a dust collecting device is installed outside the dust suction opening 17, the dust collecting device includes a collecting baffle 30, a lower end of the collecting baffle 30 is fixedly connected to an intermediate connecting member 31 at the rear side of the baffle 5, an upper end of the collecting baffle 30 is fixed outside the dust suction opening 17 of the miter saw, the collecting baffle 30 is movably enclosed outside the lower portion of the saw blade, and a dust collecting opening 32 is formed in the front surface of the collecting baffle 30.
Most of dust, wood chips and the like generated by the saw blade in the cutting process can move along the tangential direction of the saw blade under the drive of the rotating saw blade. Most of the dust, sawdust and the like can enter the air duct under the action of cutting force and the suction force of the dust collection fan blade 22, and even if a small part of dust and sawdust pass over the dust collection port 17 under the driving of the saw blade, the dust and the sawdust can be blocked by the fixed protective cover 10 and the storage baffle 30, finally fall back to the peripheral position of the dust collection port 17 and are carried and sucked away by air flow. Therefore, after the dust collecting device is installed, the total dust collection efficiency of the miter saw can reach more than 95%, and the dust-free operation in the true sense can be realized. Simultaneously, should accomodate baffle 30 and have certain tensile performance, its upper portion can be along with workstation 4, handle 6 left and right sides, reciprocate, and its shape and structure have better tensile, deformability, consequently, homoenergetic under the different service condition of mitre saw all can realize better dust, sawdust and block and accomodate.
In addition, after the containing baffle 30 is arranged, because the airflow around the saw blade is blocked and concentrated, the heat dissipation of the saw blade is very beneficial, especially, the containing baffle 30 is arranged to be of a horn-shaped structure with a small upper part and a large lower part, the airflow is increased at the dust suction port, the pressure increasing speed is increased, and the dust suction effect and the heat dissipation effect are overlapped.
As shown in fig. 5, in this embodiment, the first transmission mechanism and the second transmission mechanism are both belt pulleys, 2 belts are directly connected by a belt or an intermediate belt or a belt pulley for transmission, and a shield 33 is installed on the periphery of the belt pulley and the belt. Besides the belt and the belt wheel, the gear engagement or the intermediate gear transmission can also be adopted, or the first transmission mechanism is set as the belt wheel, the second transmission mechanism is set as the gear, and the intermediate conversion component is arranged between the belt wheel and the gear for transmission. But adopt belt and belt pulley mode, the noise is less relatively, and the resistance increases during the cutting, also can not produce the problem of transshipping, is favorable to protecting the safety of motor.
As shown in fig. 7, 8 and 9, the dust outlet 18 of the present embodiment is located above the rear end of the table 4, and a dust bag 34 is mounted on the dust outlet 18. The dust collecting bag 34 is detachably mounted on the motor housing 1 for easy cleaning, carrying and use.
According to the integrated dust collection motor, the heat dissipation, dust collection and driving are integrated, and an additional dust collector and the like are not needed for collecting and treating dust and sawdust, so that the cost can be well reduced, and the integrated dust collection motor is convenient to carry; the dust collecting device is matched and arranged on an electric tool, can directly collect dust, and has a dust collection rate of more than 95 percent for dust and sawdust through the improvement of a plurality of aspects of structures compared with the prior miter saw.
The technical contents not described in detail in the present invention are all known techniques.
Claims (10)
1. The integrated dust collection motor comprises a shell, wherein a stator is arranged in the shell, a rotor is arranged in the middle of the stator, and the rotor is fixed with the shell through a front end bearing and a rear end bearing respectively; the dust collection wind box is provided with an inlet end at the circumferential side of the rotor, a shell at the dust collection wind box part is provided with a dust collection port communicated with the inlet end, a shell at the dust collection fan blade part is provided with a dust outlet, and the dust collection port and the dust outlet are arranged on the side surface of the shell.
2. The integrated dust suction motor according to claim 1, wherein the housing is composed of a motor cover and an end cover on left and right sides.
3. The integrated dust collection motor according to claim 1 or 2, wherein the dust collection wind box is arranged between the dust collection fan blade and the stator, a sealing cover is arranged between the dust collection fan blade and the dust collection wind box, a ventilation hole is arranged in the middle of the sealing cover, and the ventilation hole is matched with a concave part on the blade side of the dust collection fan blade.
4. The integrated dust collection motor according to claim 1, wherein a safety protection grid plate is installed at the dust collection port of the housing and/or the inlet end of the dust collection wind box.
5. The miter saw comprises a base, a workbench, a baffle and a handle, wherein a fixed support is arranged at the rear end of the workbench, a movable support is arranged on the fixed support, the miter saw is characterized in that the integrated dust collection motor according to any one of claims 1-4 is arranged on the movable support, a first transmission mechanism is arranged at the end part of a rotor extending out of a shell, a fixed protective cover is arranged on the shell or on the movable support, a rotating shaft used for installing a saw blade is arranged on the fixed protective cover, a second transmission mechanism is arranged on the rotating shaft which is positioned at the same side with the first transmission mechanism, the first transmission mechanism can drive the second transmission mechanism to move, and a dust outlet of the shell is arranged in the tangential direction of the saw blade.
6. The miter saw as claimed in claim 5, wherein a dust collecting device is installed between the dust suction port and the table, the dust collecting device includes a collecting baffle, a lower end of the collecting baffle is fixedly connected to the middle connecting member at the rear side of the baffle, an upper end of the collecting baffle is disposed at the outer side of the dust suction port, the collecting baffle is movably enclosed at the outer side of the saw blade, and the front surface of the collecting baffle forms the dust collecting port.
7. A miter saw as claimed in claim 5 or 6, wherein the first transmission mechanism is a pulley and the second transmission mechanism is a gear, and an intermediate transmission member is provided between the pulley and the gear for transmission.
8. A miter saw as claimed in claim 5 or 6, wherein the first and second drive mechanisms are pulleys, 2 pulleys are driven by a belt direct connection or an intermediate belt, a pulley, and a guard is mounted around the pulley and the belt.
9. A miter saw as claimed in claim 5 or 6, wherein the first and second gears are gears, and 2 gears are engaged or driven by an intermediate gear.
10. The miter saw of claim 5 or 6, wherein said dust outlet is located above the rear end of the table, and a dust bag is mounted on the dust outlet.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610476896.XA CN106863502B (en) | 2016-06-27 | 2016-06-27 | Integrated dust absorption motor and miter saw |
| PCT/CN2017/084913 WO2018000979A1 (en) | 2016-06-27 | 2017-05-18 | Integral dust-collecting motor and miter saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610476896.XA CN106863502B (en) | 2016-06-27 | 2016-06-27 | Integrated dust absorption motor and miter saw |
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| CN106863502A CN106863502A (en) | 2017-06-20 |
| CN106863502B true CN106863502B (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610476896.XA Active CN106863502B (en) | 2016-06-27 | 2016-06-27 | Integrated dust absorption motor and miter saw |
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| CN (1) | CN106863502B (en) |
| WO (1) | WO2018000979A1 (en) |
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| CN114904874B (en) * | 2021-05-08 | 2023-05-23 | 宜兴大平杆塔制造有限公司 | Application method of zinc fume collecting device for zinc plating workshop |
| CN113771139B (en) * | 2021-09-16 | 2023-06-02 | 浙江华丰电动工具有限公司 | Desk type dust collecting saw |
| CN114474248A (en) * | 2022-02-08 | 2022-05-13 | 东北林业大学 | Cutting device for wood working of dust type prevents flying |
| CN114474257B (en) * | 2022-04-01 | 2023-05-09 | 浏阳市五联家居制造有限公司 | Anti-blocking wood processing sawdust collecting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101758291B (en) * | 2008-10-24 | 2015-02-04 | 苏州宝时得电动工具有限公司 | Cutter |
| JP2011131367A (en) * | 2009-12-25 | 2011-07-07 | Hitachi Koki Co Ltd | Portable cutter |
| JP5539020B2 (en) * | 2010-05-20 | 2014-07-02 | 株式会社マキタ | Cutting tool dust collector |
| CN102490162A (en) * | 2011-12-14 | 2012-06-13 | 江苏金飞达电动工具有限公司 | Dust suction device for electric cutting tool |
| CN202845928U (en) * | 2012-09-05 | 2013-04-03 | 宁波德丰动力科技有限公司 | Miter cutting machine capable of discharging dust automatically |
| CN204413281U (en) * | 2015-01-29 | 2015-06-24 | 浙江精深实业有限公司 | A kind of have movable protective, the clamping of saw blade location and the beveler of dust-absorbing function |
| CN205272243U (en) * | 2015-12-31 | 2016-06-01 | 宁波良业电器有限公司 | Sweep -saw blows dust collection structure |
| CN205905150U (en) * | 2016-06-27 | 2017-01-25 | 青岛尘霸工贸有限公司 | Integral type dust absorption power and mitre saw |
-
2016
- 2016-06-27 CN CN201610476896.XA patent/CN106863502B/en active Active
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2017
- 2017-05-18 WO PCT/CN2017/084913 patent/WO2018000979A1/en active Application Filing
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| CN106863502A (en) | 2017-06-20 |
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