TW201641241A - Energy-saving dust-collecting device - Google Patents

Abstract

An energy-saving dust-collecting device includes a heat-dissipation motor, a processing member, a wind guide unit, a suction unit and a dust-collecting unit. The heat-dissipation motor makes use of an output shaft to drive the processing member and a fan for rotation, so that an air gathering element of the wind guide unit gathers the airflow introduced from the fan. The airflow is guided and sent to a main tube member of the suction unit through a guide pipe connected to the air gathering element. Due to the venture effect, a relative negative pressure is generated inside the main tube member, and a straw member inhales dusts neighboring the processing member into the main tube member. Finally, dusts and bits are sent to the dust-collecting unit for being processed. With the arrangement of the fan, the heat-dissipation motor can be cooled and, at the same time, the airflow produced by the fan can generate a dust absorption effect, so as to achieve the purpose of energy-saving.

Description

Energy-saving dust collecting device

The invention relates to a sawing device, in particular to an energy-saving dust collecting device suitable for a wood processing machine.

There is a table saw machine with a dust collecting function (for example, the Republic of China Certificate No. M335337 and the public number 201004767), although it can perform dust collection while sawing, but because it is used to drive the saw blade to rotate and The dust collection is a different power source, which increases the manufacturing cost. Furthermore, the whole dust collecting device must have an external (electric) dust collecting fan to provide a negative pressure to cause air flow, and the dust collecting fan must be externally connected to the power source, which occupies the working space and the weight causes the labor burden when the machine is transported.

In addition, the Republic of China public number 569910, 488373 and certificate number M267047, M267046, M248588, I238764, M241205 and other patent cases, all use the same power source to drive processing tools and dust collection equipment, although the above mentioned missing, but in the tool and When the dust collecting equipment shares the same power source, not only must the complicated transmission mechanism such as belt, pulley, gear, friction wheel, transmission cable, etc. be provided to drive the impeller for dust collection, and the rotational speed and output torque of the machining shaft will be It is affected by the transmission mechanism and affects the processing quality.

Accordingly, it is an object of the present invention to provide an energy-saving dust collecting device that collects dust using an air flow discharged from a heat-dissipating motor.

Therefore, the energy-saving dust collecting device of the present invention comprises a heat-dissipating motor, a processing member, a wind guiding unit, a suction unit and a dust collecting unit. The heat dissipating motor comprises a casing, a stator mounted inside the casing, a rotor penetrating inside the stator and rotatable relative to the stator, an output shaft connected to the rotor, and being driven by the output shaft a rotating fan and at least one air guiding duct between the outer casing and the rotor, the air guiding prop has an air inlet and an air outlet opposite to the air inlet, the fan rotating to pass the airflow outside the outer casing The tuyere is introduced and flows through the air duct and then is led out by the air outlet. The workpiece is rotated by the output shaft. The air guiding unit includes a gas collecting component connected to the air outlet and mounted to the outer casing, and a conduit connected to the gas collecting component, the conduit has a positioning end connected to the gas gathering component, and a positioning opposite to the positioning The end portion of the end portion and an inner hole communicating from the positioning end portion to the end portion, the inner hole guiding the air flow of the air outlet toward the end portion. The suction unit is connected to the air guiding tube of the air guiding unit, and has a hollow tubular main pipe member and a hollow tubular suction pipe member connected to the main pipe member. The main pipe member has a connecting portion connected to the end portion. a tapered portion, a throat connected to the downstream portion of the tapered portion opposite to the end portion, a diverging portion connected to the downstream portion of the throat portion opposite to the tapered portion, and a low pressure region located in the diverging portion The pipette member has a lead-in end that communicates with the low-pressure zone and a suction end that is opposite the lead-in end and that approximates the workpiece. The dust collecting unit is connected to the diverging portion of the main pipe member, and collects dust Chips.

The effect of the present invention is that the fan can be cooled by the inhalable airflow when the fan of the heat dissipating motor rotates, and the airflow discharged by the fan is guided to the air guiding unit and the suction unit, and is generated by the inside of the suction unit. Relative to the negative pressure, the dust adjacent to the workpiece can be sucked into the main pipe, and finally the dust is sent to the dust collecting unit for cleaning, which can simplify the structure and save energy.

10‧‧‧heating motor

11‧‧‧Shell

111‧‧‧Air inlet

112‧‧‧ exhaust vents

12‧‧‧ Stator

13‧‧‧Rotor

14‧‧‧ Output shaft

15‧‧‧fan

16‧‧‧air guide

161‧‧‧ inlet

162‧‧‧air outlet

20‧‧‧Processed parts

30‧‧‧Air guide unit

31‧‧‧ gas gathering components

311‧‧‧Air chamber

32‧‧‧ catheter

321‧‧‧ positioning end

322‧‧‧End

323‧‧‧ 内孔

40‧‧‧sucking unit

41‧‧‧Administrative parts

411‧‧‧attenuation

412‧‧‧ throat

413‧‧‧Expanding

414‧‧‧Low-pressure zone

42‧‧‧ pipette parts

421‧‧‧Introduction

422‧‧‧Inhalation end

43‧‧‧Fixed parts

50‧‧‧ dust collecting hood

51‧‧‧Sand space

52‧‧‧Wall

53‧‧‧Opening

60‧‧‧ dust collection unit

100‧‧‧ machine

110‧‧‧ countertop

120‧‧‧Slot

140‧‧‧Working end

Other features and advantages of the present invention will be apparent from the detailed description of the embodiments of the present invention. FIG. 1 is a perspective view showing an embodiment of the energy-saving dust collecting device of the present invention installed on a saw. 2 is a perspective view of one of the above embodiments of the present invention; FIG. 3 is a schematic cross-sectional view of one of the above embodiments of the present invention; and FIG. 4 is a partially enlarged schematic view of FIG.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , an embodiment of the energy-saving dust collecting device of the present invention comprises a heat-dissipating motor 10 , a processing component 20 , a wind guiding unit 30 , a suction unit 40 , and a dust collecting hood 50 . And a dust collecting unit 60. The energy-saving dust collecting device of the present embodiment is described as being installed inside a machine 100 of a sawing machine. The machine table 100 has a panel 110 and a sipe 120 opened on the table 110. The sipe 120 Have a pair of parts that should be machined 20 Enter the working end 140.

The heat dissipating motor 10 is positioned relative to the machine base 100 and includes a housing 11 , a stator 12 mounted inside the housing 11 , a rotor 13 extending through the stator 12 and rotatable relative to the stator 12 , An output shaft 14 coupled to the rotor 13, a fan 15 rotatably driven by the output shaft 14, and a plurality of air ducts 16 interposed between the outer casing 11 and the rotor 13. The outer casing 11 has a plurality of air inlet holes 111 and a plurality of air outlets 112 disposed opposite to the air inlets 111. The air ducts 16 each have an air inlet 161 corresponding to the fan 15 and the air inlets 111, and an air outlet 162 opposite to the air inlet 161 and communicating with the air outlets 112 and the air guiding unit 30. As shown by the arrow in FIG. 3, the fan 15 rotates to introduce the airflow outside the casing 11 through the air inlets 111, and is introduced by the air inlets 161, and flows through the air ducts 16 and then The air outlet 162 and the air outlets 112 are led out.

The workpiece 20 of the embodiment is a circular saw blade, and is fixed to the output shaft 14 of the heat dissipation motor 10 opposite to the fan 15 , and is rotated by the output shaft 14 and can be rotated relative to the slot 120 . When the working end 140 is screwed in, a workpiece is cut (not shown).

The air guiding unit 30 includes a gas collecting member 31 connected to the air outlet 112 and installed outside the outer casing 11 and a duct 32 connected to the gas collecting member 31. The air collecting member 31 has a hollow annular box shape, and Having a gas plenum 311 communicating with the venting opening 112, the conduit 32 has a positioning end portion 321 connected to the gas gathering member 31, a distal end portion 322 opposite to the positioning end portion 321 and a The positioning end 321 is connected to the end The inner hole 323 of the portion 322 can guide the airflow discharged from the air exhaust ports 112 toward the end portion 322.

Referring to FIG. 4, the suction unit 40 is connected to the air guiding tube 32 of the air guiding unit 30, and has a hollow tubular main pipe member 41, a hollow tubular suction pipe member 42 connected to the main pipe member 41, and The main pipe member 41 is attached to the fixing member 43 of the dust collecting hood 50. The main control member 41 has a tapered portion 411 connected to the distal end portion 322, a throat portion 412 connected to the downstream end portion 322 and connected downstream of the tapered portion 411, and a connecting portion opposite to the tapered portion 411 a diverging portion 413 downstream of the throat portion 412 and a low pressure portion 414 located in the diverging portion 413. When the tapered portion 411 extends from the end portion 322 toward the throat portion 412, the inner diameter gradually contracts. 413 is gradually enlarged when the throat portion 412 extends toward an end opposite to the tapered portion 411. The straw member 42 has a lead-in end 421 communicating with the low-pressure region 414 and a side opposite to the lead-in end 421. At the suction end 422 of the workpiece 20. Preferably, the axis of the pipette member 42 is clamped at an acute angle to the axis of the main pipe member 41 to prevent the airflow from being reversely rushed into the interior of the dust collecting hood 50.

Referring to FIG. 4, the dust collecting hood 50 is disposed on at least a portion of the processing member 20. The dust collecting hood 50 has a hollow shell shape and has a peripheral wall 52 defining a swarf space 51 and An opening 53 extends through the peripheral wall 52 and adjacent to the workpiece 20 and the working end 140. In the present embodiment, the dust collecting hood 50 is connected to the heat dissipating motor 10, and the gas collecting member 31 is disposed close to the dust collecting hood 50 and sleeved outside the outer casing 11 of the heat dissipating motor 10, and the peripheral wall 52 Providing the fixing member 43 to be attached, the suction end of the straw member 42 422 passes through the opening 53 and communicates with the collecting space 51. It should be noted that although the dust collecting hood 50 can concentrate the dust first, it is not an essential component of the invention, and if the amount of dust is not large, and the suction force is sufficient and the dust is taken away by the suction pipe member 42, The pipette member 42 is disposed adjacent to the workpiece 20, and the dust collecting hood 50 may not be omitted, and the main pipe member 41 may be attached to the countertop 110 of the machine table 100 as appropriate.

The dust collecting unit 60 is connected to the diverging portion 413 of the main pipe member 41, and collects dust.

As shown in FIG. 1 , FIG. 3 and FIG. 4 , when the workpiece to be sawed is advanced along the top surface of the deck 110 toward the workpiece 20 , the heat dissipation motor 10 drives the workpiece 20 to be screwed into the working end 140 . At the same time, the workpiece is cut. The output shaft 14 of the heat dissipation motor 10 also drives the fan 15 to rotate while driving the workpiece 20. The fan 15 then introduces air outside the casing 11 from the air inlets 111, and the airflow flows through the air. When the air duct 16 is disposed, the heat dissipating motor 10 is cooled, and the airflow cooled by the rotor 13 continues to be led out from the air outlets 162, and then flows into the air collecting member 31 through the air exhaust ports 112. In the chamber 311, and as the conduit 32 is guided to the main pipe member 41 of the suction unit 40, the flow velocity is increased by the tapered portion 411, and the venturi effect is caused in the low pressure region 414. A relative negative pressure is generated, and the dust adjacent to the workpiece 20 and the working end 140 is sucked into the diverging portion 413 of the main working member 41 through the suction pipe member 42 , and finally the dust is guided to the dust collecting unit 60 . Handle it.

Therefore, the energy-saving dust collecting device of the present invention can collect the heat-dissipating horse Up to 10 is used to cool the air discharged from the rotor 13, and the airflow is introduced into the main pipe member 41 of the suction unit 40 to generate an air flow, and the flowing air generates a negative pressure due to the venturi effect, and the dust collecting hood 50 is further The pressure difference attracts the dusty air outside, and finally the dusty air can be sent to the dust collecting unit 60 for cleaning, and the energy saving effect can be achieved.

Therefore, the energy-saving dust collecting device of the present invention absorbs dusty air by using the airflow discharged by the heat dissipation motor 10, thereby achieving energy saving, simple design, and light weight without occupying space. It is not necessary to externally supply power or a fan, as long as the heat is dissipated. The motor 10 can be installed with a heat dissipation vent hole, and does not need to be coupled to the machining shaft by a contact transmission mechanism as in the prior art. The overall structure is simple and the assembly is easy to assemble, and not only the cooling purpose of the heat dissipation motor 10 can be achieved, but also The effect of vacuuming can be achieved to achieve energy saving.

The drawing device of the present invention is illustrated by a table saw machine, but in fact, the present invention can also be widely applied to a processing machine such as a circular saw, a groove machine, a grinder, etc. (not shown), and 1 is a view showing that the dust collecting hood 50 is disposed on the bottom side of the table top 110, but in combination with different types of processing machines, the dust collecting device of the present invention may be disposed on the top surface of the table top with a dust collecting hood, or may be matched The portable sawing machine allows the dust collecting hood to be set independently.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

10‧‧‧heating motor

20‧‧‧Processed parts

30‧‧‧Air guide unit

40‧‧‧sucking unit

50‧‧‧ dust collecting hood

60‧‧‧ dust collection unit

100‧‧‧ machine

110‧‧‧ countertop

120‧‧‧Slot

140‧‧‧Working end

Claims (10)

An energy-saving dust collecting device comprises: a heat-dissipating motor comprising: a casing, a stator mounted inside the casing, a rotor penetrating inside the stator and rotatable relative to the stator, and an output shaft connected to the rotor a fan that is rotatable by the output shaft and at least one air guiding duct between the outer casing and the rotor, the air guiding prop has an air inlet and an air outlet opposite to the air inlet, and the fan rotates The airflow outside the outer casing is introduced from the air inlet and flows through the air guiding duct and then led out from the air outlet; a workpiece is rotated by the output shaft; and a wind guiding unit includes a connecting air outlet And a gas collecting component mounted on the outer casing and a conduit connected to the gas collecting component, the conduit has a positioning end connected to the gas gathering component, a distal end portion opposite to the positioning end, and a positioning by the positioning The end portion communicates with the inner hole of the end portion, the inner hole can guide the air flow of the air outlet toward the end portion; a suction unit is connected to the air guiding tube of the air guiding unit, and has a hollow tubular shape Supervisor And a straw member connected to the main pipe member and having a hollow tubular shape, the main pipe member having a tapered portion connected to the end portion, a throat opposite to the end portion and connected to the downstream portion of the tapered portion, and a reverse a diverging portion connected downstream of the throat portion and a low pressure region located in the diverging portion, the suction tube member having a lead-in end communicating with the low-pressure region and a side opposite to the lead-in end At the suction end of the workpiece; and a dust collecting unit connected to the diverging portion of the main pipe member and collectable Dust. The energy-saving dust collecting device according to claim 1, wherein the tapered portion of the main pipe member of the suction unit is gradually contracted from the end portion toward the throat portion, and the diverging portion is reversed by the throat portion The inner diameter gradually increases as it extends at one end of the tapered portion. The energy-saving dust collecting device according to claim 2, wherein the suction pipe member has its own axis that is at an acute angle to the main axis of the main pipe member. The energy-saving dust collecting device according to any one of claims 1 to 3, further comprising a dust collecting hood that is disposed on at least a portion of the workpiece, the dust collecting hood having a hollow shell shape And having a peripheral wall defining a swarf space and an opening extending through the peripheral wall adjacent to the workpiece and the working end, the suction end of the straw member passing through the opening and communicating with the swarf space. The energy-saving dust collecting device according to claim 4, wherein the dust collecting hood is connected to the heat dissipating motor. The energy-saving dust collecting device according to claim 5, wherein the suction unit further has a fixing member for mounting the main pipe member to the dust collecting hood, and the peripheral wall of the dust collecting hood provides the fixing member for attachment . The energy-saving dust collecting device according to any one of claims 1 to 3, wherein the workpiece is a circular saw blade and is fixed to an output shaft of the heat dissipation motor. The energy-saving dust collecting device of claim 6, wherein the workpiece is a circular saw blade and is fixed to an output shaft of the heat-dissipating motor. The energy-saving dust collecting device according to any one of claims 1 to 3, The air collecting component of the air guiding unit has a hollow annular box shape and is sleeved outside the outer casing of the heat dissipating motor. The energy-saving dust collecting device according to claim 5, wherein the air collecting member of the air guiding unit has a hollow annular box shape and is disposed close to the dust collecting hood and sleeved outside the outer casing of the heat dissipating motor.