WO2017148340A1 - 电圆锯用集尘罩及集尘方法 - Google Patents

电圆锯用集尘罩及集尘方法 Download PDF

Info

Publication number
WO2017148340A1
WO2017148340A1 PCT/CN2017/074946 CN2017074946W WO2017148340A1 WO 2017148340 A1 WO2017148340 A1 WO 2017148340A1 CN 2017074946 W CN2017074946 W CN 2017074946W WO 2017148340 A1 WO2017148340 A1 WO 2017148340A1
Authority
WO
WIPO (PCT)
Prior art keywords
dust collecting
cavity
strip
saw blade
collecting cover
Prior art date
Application number
PCT/CN2017/074946
Other languages
English (en)
French (fr)
Inventor
张成峰
张成玉
Original Assignee
张成峰
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201610109946.0A external-priority patent/CN105729591A/zh
Priority claimed from CN201620149259.7U external-priority patent/CN205394134U/zh
Application filed by 张成峰 filed Critical 张成峰
Priority to JP2018546010A priority Critical patent/JP2019507689A/ja
Priority to US16/080,660 priority patent/US20190070702A1/en
Publication of WO2017148340A1 publication Critical patent/WO2017148340A1/zh

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/0046—Devices for removing chips by sucking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D59/00—Accessories specially designed for sawing machines or sawing devices
    • B23D59/006—Accessories specially designed for sawing machines or sawing devices for removing or collecting chips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/06—Safety devices for circular cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/08—Protective coverings for parts of machine tools; Splash guards

Definitions

  • the present invention relates to the field of power tools, and in particular to a dust collecting cover for an electric circular saw and a dust collecting method.
  • An object of the present invention is to overcome the above-mentioned deficiencies of the conventional dust-free electric saw and to provide a dust collecting cover for an electric circular saw.
  • a dust collecting cover for an electric circular saw comprising: a dust collecting cover body having a cavity structure therein, wherein: a bottom surface of the cavity of the dust collecting cover body is provided for a strip-shaped opening through which the saw blade penetrates, the other faces of the cavity are closed structures; the cavity of the dust collecting cover body forms an air flow passage communicating with the outside only through the strip-shaped opening, the air inlet of the air flow passage
  • the mouth and the air outlet are respectively formed at a rear end of the strip mouth, wherein the air inlet is formed at a near serration at the rear end of the strip mouth, and the air outlet is formed at a far serration at the rear end of the strip mouth;
  • the direction of the air passage is : starting from the near serration of the rear end of the strip mouth, curved along the outer edge of the saw blade to the front end of the strip mouth, then turning back and forth, flowing along the upper wall of the cavity to the rear of the cavity, and then turning downwards,
  • An arc-shaped guiding wall connecting the front end of the strip-shaped opening and the upper wall of the dust collecting cover body is formed inside the front end of the cavity of the dust collecting cover body, and the inner side of the cavity of the dust collecting cover body is inside
  • a rear guide wall at the rear end of the cavity that connects the body of the dust collecting hood and the strip mouth is formed.
  • An arc-shaped partition is arranged inside the cavity of the dust collecting cover body, the rear end of the curved partition plate extends to the rear end of the strip-shaped opening, and the rear end of the strip-shaped opening is divided into a near-saw tooth and a far-saw tooth.
  • the air inlet is formed at the near serration, and the air outlet is formed at the far serration.
  • the front end of the arcuate partition extends to the front of the cavity and has a certain distance from the arcuate guide wall to form a vent.
  • the middle portions of the inner walls of the strip-shaped openings on the bottom surface of the cavity of the dust collecting cover body are respectively
  • the inner protrusion forms a limiting rib, and the distance between the two limiting ribs is equivalent to the thickness of the saw blade, which is slightly larger than the thickness of the saw blade.
  • the outer front surface of the dust collecting hood body or the lower side of the front surface is inclined forward and downward to form a guiding slope.
  • An installation slot for the sheet-shaped connecting rod to penetrate is disposed at a rear lower corner of the dust collecting cover body, a pin shaft is disposed between the two walls of the mounting slot; and a bottom is further disposed in the mounting slot
  • the front side of the left side or the right side of the dust collecting cover body is provided with a rotatable strut.
  • the length of the rotatable strut is greater than the height of the dust collecting cover body, and the rotating axis is located at the middle of the dust collecting cover body.
  • the left or right side surface of the dust collecting hood body is provided with one or two limit bumps corresponding to the thickness of the rotatable strut.
  • the invention also provides a dust collecting and dusting method for an electric circular saw, which mainly solves the dusting phenomenon of the upward front or the upper rear which occurs when the teeth pass through the slit of the cut object after the saw blade.
  • the method is that a dust collecting cover is arranged on the upper side of the object to be cut, and the fluid property formed inside the dust collecting hood when working with the saw blade is used, and the slat of the cut object is used as a passage, and the rear teeth of the saw blade are forwardly moved upward.
  • the dust collecting hood has a dust collecting hood body having a cavity structure inside, and the bottom surface of the cavity of the dust collecting hood body is opened for the saw blade to penetrate a strip-shaped opening, the other faces of the cavity are closed structures;
  • the cavity of the dust collecting hood body forms an air flow passage communicating with the outside only through the strip-shaped opening, the air inlet and the air outlet of the air flow passage Formed at the rear end of the strip-shaped opening, wherein the air inlet is formed at a near serration at the rear end of the strip-shaped opening, and the air outlet is formed at a distal serration at the rear end of the strip-shaped opening;
  • the flow passage is oriented by a strip The proximal end of the mouth begins near the sawtooth, curved along the outer edge of the saw blade to the front end of the strip-shaped opening, and then turns back and forth, flows along the upper wall of the cavity to the rear of the cavity, and then turns down
  • the far end of the saw blade is stopped; in this method, the rear teeth of the saw blade are forward and upward Dust emitted air flow generated with the rotation of the first sawtooth
  • the saw blade After the saw blade is near the serration, it enters the airflow passage of the cavity of the dust collecting cover body, and is then carried by the airflow in the airflow passage to the far toothed teeth of the saw blade, together with the dust thrown upward and rearward of the saw blade.
  • the saw seam of the cut object flows to the lower side of the object to be cut, and is discharged together with the dust originally generated on the lower side of the object to be cut.
  • the dust collecting hood on the object to be cut is collected by the saw seam to the underside of the object to be cut, thereby greatly simplifying the dust collecting hood which is extremely simple in shape and structure.
  • the dust collecting mechanism of the dust-free electric circular saw significantly improves the dust collecting effect of the dust-free electric circular saw. It is of great significance to miniaturize and lighten the dust-free electric circular saw (or cutting machine) and to promote the dust-free promotion of the cutting industry.
  • FIG. 1 is a plan view showing the structure of a dust collecting cover body according to an embodiment of the present invention
  • Figure 2 is a bottom plan view of the dust collecting cover body of the present invention.
  • Figure 3 is a schematic plan view showing the inside of the dust collecting cover body of the present invention.
  • FIG. 4 is a schematic view of the dust collecting cover of the present invention in use
  • FIG. 5 and FIG. 6 are plan structural views of a dust collecting cover body according to another embodiment of the present invention.
  • Figure 7 is a schematic view of the dust collecting cover body of the present invention in another use state
  • Figure 8 is a schematic view of a dust collecting cover body according to another embodiment of the present invention.
  • the present invention relates to a dust collecting cover for an electric circular saw, which comprises a dust collecting hood body 1 having a cavity structure inside, and a bottom surface of the dust collecting hood body 1 is opened.
  • a strip-shaped opening 11 through which the saw blade penetrates the inside of the cavity 12 of the dust collecting hood body 1 is formed with an air flow passage communicating with the outside only through the strip-shaped opening 11, the air inlet and the air outlet of the air flow passage
  • the air ports are formed at the rear end of the strip opening 11, wherein the air inlet is formed at the near serration 111 at the rear end of the strip opening, and the air outlet is formed at the far serration at the rear end of the strip opening 112;
  • the airflow direction formed by the airflow passage in the cavity 12 is: the airflow enters the dust collecting hood body 1 from the near serration 111 of the rear end of the strip opening 11, and then flows along the outer edge of the saw blade to the strip opening 11 The front end is deflected upward and rearward along the
  • the air inlet and the air outlet at the rear end of the strip opening 11 are naturally formed by the direction of the internal air flow because the air flow generated by the saw blade at high speed runs into the cavity 12 of the dust collecting body 1 at the near serration 111.
  • the air flow necessarily flows out from the far serration 112.
  • an arc-shaped guide wall 13 that engages the front end of the strip-shaped opening 11 and the upper wall of the dust collecting hood body 1 is formed inside the front end of the dust collecting hood body 1
  • the rear end of the dust collecting hood body 1 is formed with a rear guiding wall 14 that engages the upper wall of the dust collecting hood body 1 and the rear end of the strip opening.
  • a curved partition 15 is provided in the cavity 12 inside the dust collecting cover body 1, the curvature of the curved partition 15 and the saw blade 2
  • the arc of the arc is equivalent; the rear end of the arcuate partition 15 extends to the rear end of the strip opening 11, and the rear end of the strip opening 11 is divided into a near serration 111 and a distal serration 112, and the near serration 111 is formed.
  • the air inlet, the distal serration 112 forms an air outlet, and the front end of the curved partition 15 extends to the front of the dust collecting cover body 1 and has a certain distance from the curved guiding wall 13 to form a vent.
  • the central portions of the inner walls of the two sides of the strip-shaped opening 11 of the bottom surface of the dust collecting cover body 1 respectively protrude inwardly to form a limiting rib 113, and two limiting convexities are respectively protruded.
  • the distance between the strips 113 is equivalent to the thickness of the saw blade 2, which is slightly larger than the thickness of the saw blade 2.
  • the two limiting ribs 113 make the dust collecting hood body 1 not largely offset during operation, even if the offset is The sawtooth portion of the saw blade 2 is not touched, and only the both sides of the saw blade 2 are rubbed, so that the dust cover can be prevented from being scratched or smashed by the saw blade, thereby ensuring safety during work.
  • the front surface of the dust collecting hood body 1 has a guiding slope 16 inclined forward and downward, that is, the guiding slope 16 is at an acute angle with the surface of the saw table 5, and functions to facilitate the workpiece 3 from the dust collecting body 1
  • the front surface of the saw blade 5 enters the lower side of the dust collecting hood body 1 between the upper surface of the saw blade 5.
  • the dust collecting hood body 1 is assembled by two symmetrical shells of the left and right sides, and the inner curved guiding wall 13, the rear guiding wall 14, and the like are also formed by the inner sides of the two casings.
  • the ribs are combined.
  • the rear cover corner of the dust collecting hood body 1 is provided with a mounting space groove 17 through which the sheet-shaped connecting rod penetrates, and a pin shaft is disposed between the two walls of the mounting space groove 17. 18.
  • the dust collecting hood body 1 When the dust collecting hood body 1 is installed, it is installed by a piece of connecting rod 4, and the bottom end of the sheet connecting rod 4 is fixed on the saw table or the electric saw housing, and a longitudinal through groove 41 is opened thereon, when installed, The sheet-shaped connecting rod 4 penetrates into the mounting groove 17 of the dust collecting cover body 1, and the pin 18 in the mounting groove 17 traverses the through groove 41 of the sheet-shaped connecting rod 4, thereby forming front, rear, left and right limits.
  • the movable upper and lower movable installations that is, the dust cover body 1 can move up and down along the longitudinal through groove 41 of the sheet connecting rod 4, so that the dust collecting cover body 1 can be lifted by the cutting object 3 and automatically attached to the cut.
  • the surface of the object does not move back and forth with the object to be cut.
  • the sheet-shaped connecting rod 4 is behind the saw blade 2, the cut object 3 has been sawed through the saw blade 2, and the sheet-shaped connecting rod 4 is not blocked.
  • a rotatable strut 6 is provided at a position forward of the left side or the right middle portion of the dust collecting hood body 1.
  • the length of the rotatable strut 6 is greater than the height of the dust collecting hood body 1, and its rotating axis Located at the upper edge of the middle portion of the dust collecting hood body 1, the left or right side surface of the dust collecting hood body 1 is provided with one or two limiting bumps 61 corresponding to the thickness of the rotatable strut 6.
  • the dust cover body 1 can be supported by the rotatable strut 6 in the manner shown in FIG. 7, so that the operator can perform the alignment operation, and after the alignment, push the saw object for sawing.
  • the other limit bump on the right side of the figure functions to limit the rotatable strut 6 directly above the limit buck without falling in the state where most of the rotatable strut 6 is not required.
  • the limit bump 61 can also be replaced by a limit bump, a ridge, or the like.
  • the dust collecting cover of the invention utilizes its own structural features, the working characteristics of the circular saw blade, and the fluid characteristics, and collects the dust on the upper side of the cut object through the saw seam to the lower side of the cut object, and then cuts The dust appearing on the lower side of the object enters the dust collecting device on the lower side of the object to be cut.
  • the principle is that when the circular saw blade is working, the rear teeth of the saw blade throw a large amount of dust to the front upper or the front and rear of the saw blade, and the front teeth of the saw blade throw a large amount of dust to the lower back of the saw blade; the saw blade is high speed Rotating, sawtooth is equivalent to a plurality of small blades, generating airflow.
  • the airflow enters the cavity airflow passage from the near serration 111 at the rear end of the dust-collecting cavity cavity strip opening, and flows toward the front end of the strip-shaped opening 11 along the arc of the saw blade, at the front end of the strip-shaped opening 11, due to The upper surface of the cut object 3 and the front wall of the air flow passage are blocked, and the guiding action of the curved guide wall 13 is applied to make the air flow backward and upward along the air flow passage 12 of the dust collecting cover body 1.
  • the inner upper surface flows to the rear of the dust collecting hood body 1 and is deflected downward under the guiding action of the rear guiding wall 14 of the rear wall of the air flow passage 12, and the sawtooth portion 112 at the rear end of the strip opening 11 passes through the sawed quilt.
  • the dust collecting hood body 1 flows out of the cutting saw.
  • the dust generated by the rear teeth of the saw blade is ejected into the air flow passage formed in the dust collecting cavity 122, and is carried by the air flow in the passage 12 to the distal serration 112 at the rear end of the strip opening 11 to enter the saw blade magazine 21. Further, the dust generated by the front teeth of the saw blade on the lower side of the workpiece 3 enters the dust collecting device on the lower side of the object to be cut.
  • the dust itself has only the inertial kinetic energy of the forward movement, but under the holding of the strong airflow in the cavity airflow passage, the dust is carried by the airflow to the air outlet, that is, the rear teeth of the saw blade are far from the serrations, and finally The cut slit is then flowed to the underside of the cut object.
  • the arc shape is more conducive to the airflow up and then back.
  • the bottom surface of the strip opening 11 is placed as close as possible to the object to be cut so that the cavity is as closed as possible, and the kerf formed by the cutting object 3 behind the saw blade is the only outlet for the air flow in the cavity 12.
  • the shape of the dust collecting cover body is changed, and the utility model is suitable for the electric circular saw working on the upper side of the workpiece, such as a cutting machine for mason cutting bricks, and the construction principle thereof.
  • the foregoing embodiments are identical in that the saw blades of both of them generate airflow and eject a large amount of dust on the upper and lower sides of the object to be cut.
  • the invention also provides a dust collecting and dusting method for an electric circular saw, which mainly solves the dusting phenomenon of the upward front or the upper rear which occurs when the teeth pass through the slit of the cut object after the saw blade.
  • the method is that a dust collecting cover is arranged on the upper side of the object to be cut, and the fluid property formed inside the dust collecting hood when working with the saw blade is used, and the slat of the cut object is used as a passage, and the rear teeth of the saw blade are forwardly moved upward.
  • the dust collecting hood has a dust collecting hood body having a cavity structure inside, and the bottom surface of the cavity of the dust collecting hood body is opened for the saw blade to penetrate a strip-shaped opening, the other faces of the cavity are closed structures; the cavity of the dust collecting hood body forms a gas flow passage communicating with the outside only through the strip-shaped opening
  • the air inlet and the air outlet of the air passage are formed at a rear end of the strip opening, wherein the air inlet is formed at a near serration at the rear end of the strip opening, and the air outlet is formed at a far side of the rear end of the strip opening
  • the direction of the air flow passage is: starting from the near serration of the rear end of the strip mouth, curved along the outer edge of the saw blade to the front end of the strip mouth, and then turning back and forth, flowing along the upper wall of the cavity to the cavity The part is further turned down to the far saw blade at the rear end of the strip mouth; in
  • the lower side of the object to be cut is discharged together with the dust originally generated on the lower side of the object to be cut.
  • the underside of the object to be cut is generally a saw blade magazine and a dust suction device communicating with the saw blade magazine, that is, the dust is sucked into the dust collecting bag by the dust suction device.
  • the present invention greatly simplifies the dust on the object to be cut by transferring the dust on the object to be cut in a very simple manner.
  • the dust collecting mechanism of the dust-free electric circular saw significantly improves the dust collecting effect of the dust-free electric circular saw. It is of great significance to miniaturize and lighten the dust-free electric circular saw (or cutting machine) and to promote the dust-free promotion of the cutting industry.
  • the dust collecting cover and the dust collecting method of the invention are not only suitable for electric circular saws, cutting machines and the like equipped with common circular saw blades, but also for electric tools equipped with grinding wheel cutting sheets or similar circular cutting media.
  • the common angle grinder for cutting and polishing, the equipped cutting wheel cutting piece, when cutting, the teeth of the saw blade will appear dusting upwards or upwards. Therefore, a power tool that directly cuts a work object by a circular sheet-like mediator and that simultaneously exhibits dusting at the back tooth and the front tooth of the saw blade is a scope of application of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)

Abstract

一种电圆锯用集尘罩及集尘方法，该集尘罩的本体（1）设有一空腔（12）构造，该空腔（12）的底面开设有供锯片穿入的条形口（11），空腔的其他面均为封闭结构；工作时其空腔自动形成一条气流通道，该气流通道的走向是：由条形口的后端的近锯齿处（111）开始，沿锯片外缘呈弧形至条形口的前端，再向上后方转折、沿空腔上壁至空腔后部，再向下转折，到条形口后端的远锯齿处止。其集尘方法是通过设置上述集尘罩及锯片旋转产生的气流，当锯片后齿抛射出的尘屑进入该集尘罩本体空腔（12）内形成的气流通道后，在通道气流的挟带下，经过被切割物的锯缝流至被切割物的下侧，并被其下侧的集尘装置收集。由此大大简化电圆锯的集尘装置构造，并提高其集尘效果与实用性。

Description

电圆锯用集尘罩及集尘方法 技术领域
本发明涉及电动工具领域，尤其涉及一种电圆锯用集尘罩及集尘方法。
背景技术
众所周知，当电圆锯置于被切割物下侧进行切割作业时，锯片后齿向锯片前上方抛射出大量尘屑，当电圆锯置于被切割物上侧进行切割作业时，锯片后齿向锯片前后方抛射出大量尘屑，且锯片前齿都会在被切割物的下侧同时抛射出大量尘屑。在已知的无尘电圆锯和电圆锯集尘设备中，还没有一个简单而有效的机构或方法，能直接被切割物上侧与下侧同时出现的尘屑归集到被切割物上侧与下侧中的其中一侧,被其中一侧的集尘装置收集。
目前市面上出现的一些类似上述集尘罩功能的防尘罩，但此类防尘罩对锯片后齿抛射出的尘屑只能起到一定的抑制作用，不能将这部分尘屑归集到被切割物下侧的集尘装置中。此外，市面上还出现了一些类似上述集尘罩功能的吸尘罩，该吸尘罩也只不过是集尘装置延伸出来的第二个带罩的吸尘口，吸尘罩通过一条软管绕过被切割物后与集尘设备连接，因为软管会挡住被切割物的切割路径，这种带软管的吸尘罩在切割较大物件时极为不便。
另外，在电圆锯使用率很高的木料加工厂，人们通常设置两个带罩的吸尘口来分别收集被切割物上面与下面产生的尘屑，被切割物上侧的尘屑由悬挂在被切割物上方的吸尘罩收集，需与被切割物保持一定距离，这种距离会导致集尘效果不理想。但对于一些移动性很强的小型电圆锯来说，配置这样复杂庞大的集尘装置就尤为不现实。
由于上述种种原因，电圆锯无尘化作业的全面推广普及受到了极大的限制，再加上电圆锯在人们的生产过程中大量使用，由此产生的尘屑与粉尘多到难以统计，对操作者的身体健康造成严重伤害，对作业场地与周边空气造成极大污染。
发明内容
本发明的目的在于克服现有无尘电锯的上述不足，提供一种电圆锯用集尘罩。
为了实现上述目的，本发明的技术方案为：一种电圆锯用集尘罩，其包括一个内部呈空腔结构的集尘罩本体，其中：该集尘罩本体的空腔底面开设有供锯片穿入的条形口，空腔的其他面均为封闭结构；所述集尘罩本体的空腔形成一条仅通过所述条形口与外部相通的气流通道，该气流通道的进气口和出气口均形成于条形口的后端处，其中，进气口形成于条形口后端的近锯齿处，出气口形成于条形口后端的远锯齿处；该气流通道的走向是：由条形口的后端的近锯齿处开始，沿锯片外缘呈弧形至条形口的前端，再向上后方转折、沿空腔上壁流向空腔后部，再向下转折，到条形口的后端的远锯片处止。
在集尘罩本体的空腔前端处内部形成有衔接所述条形口的前端处与集尘罩本体的空腔上壁的弧形导向壁，在集尘罩本体的空腔后端处内部形成有衔接集尘罩本体的空腔上壁与条形口的后端处的后导向壁。
在集尘罩本体的空腔内部设有一弧形隔板，弧形隔板的后端延伸至条形口的后端处，并将条形口后端分为近锯齿处和远锯齿处，近锯齿处形成进气口，远锯齿处形成出气口，弧形隔板的前端延伸至空腔前部并与弧形导向壁之间具有一定间距形成通气口。
所述集尘罩本体的空腔底面的条形口的两侧内壁的中部分别向 内突出形成限位凸条，两个限位凸条之间的距离与锯片的厚度相当，略大于锯片厚度。
所述集尘罩本体外部前表面或前表面下侧向前下方倾斜形成导向斜面。
所述集尘罩本体的后下角处开设有供片形连接杆穿入的安装间槽，在该安装间槽的两壁之间设有一销轴；在该安装间槽中还设有一个底部与锯台或电锯外壳固定连接的片形连接杆，片形连接杆上开设有一条供销轴垂直穿过的纵向通槽。
所述集尘罩本体的左侧或右侧中部靠前的位置设有一可旋转支杆,可旋转支杆的长度大于集尘罩本体的高度，其旋转轴心位于该集尘罩本体中部靠上边缘处，所述集尘罩本体左侧或右侧的表面设有一个或两个与可旋转支杆厚度相当的限位凸点。
本发明同时提供一种电圆锯的集尘吸尘方法，主要是解决锯片后齿通过被切割物的切缝时，出现的向上前方或上后方的抛尘现象。该方法是通过在被切割物上侧设置一集尘罩，利用锯片工作时在该集尘罩内部形成的流体特性，以被切割物的锯缝作为通道，将锯片后齿向前上方或上后方抛射出的尘屑归集到被切割物下侧；该集尘罩具有一个内部呈空腔结构的集尘罩本体，该集尘罩本体的空腔底面开设有供锯片穿入的条形口，空腔的其他面均为封闭结构；所述集尘罩本体的空腔形成一条仅通过所述条形口与外部相通的气流通道，该气流通道的进气口和出气口均形成于条形口的后端处，其中，进气口形成于条形口后端的近锯齿处，出气口形成于条形口后端的远锯齿处；该气流通道的走向是：由条形口的后端的近锯齿处处开始，沿锯片外缘呈弧形至条形口的前端，再向上后方转折、沿空腔上壁流向空腔后部，再向下转折，到条形口的后端的远锯片处止；该方法中，锯片后齿向前上方抛射的尘屑先随锯齿旋转产生的气流 由锯片后齿近锯齿处进入集尘罩本体空腔的气流通道中，再被气流通道中的气流挟带到锯片后齿远锯齿处，与锯片后齿向上后方抛射的尘屑一同经过被切割物的锯缝流至被切割物的下侧，再与原本产生在被切割物下侧的尘屑一起排出。
本发明根据圆形锯片的作业特点和流体特性，通过一个形态与结构都极其简单的集尘罩，将被切割物上面的尘屑通过锯缝归集到被切割物的下面，从而大大简化了无尘电圆锯的吸尘机构，显著提高了无尘电圆锯的集尘效果。对于无尘电圆锯(或切割机)的小型化、轻便化，以及切割行业的无尘化推广普及都具有重要意义。
附图说明
图1是本发明一种实施例集尘罩本体的平面结构图；
图2是本发明集尘罩本体的仰视图；
图3是本发明集尘罩本体的打开的内部平面示意图；
图4是本发明集尘罩使用时的示意图；
图5、图6是本发明中另一种实施例集尘罩本体的平面结构图；
图7是本发明集尘罩本体在另一种使用状态时的示意图；
图8是本发明另一种实施例集尘罩本体的示意图。
图1、图4、图8中的箭头表示气流方向。
具体实施方式
下面结合附图和实施例对本发明作进一步说明。
如图1至图3所示，本发明所述的是一种电圆锯用集尘罩，其包括一个内部呈空腔结构的集尘罩本体1，该集尘罩本体1的底面开设有供锯片穿入的条形口11，所述集尘罩本体1的空腔12内部形成一条有仅通过所述条形口11与外部相通的气流通道，该气流通道的进气口和出气口均形成于条形口11的后端处，其中，进气口形成于条形口后端的近锯齿处111，出气口形成于条形口后端的远锯齿处 112；空腔12内气流通道所形成的气流方向是：气流由条形口11的后端的近锯齿处111处进入集尘罩本体1，再沿锯片外缘呈弧形流向条形口11的前端，在条形口11前端处被切割物表面以及集尘罩本体1内空腔12前壁的阻碍、导向作用下，再向上后方转折、沿集尘罩本体1的空腔12内上表面流向空腔12后部，在空腔12后壁的阻碍、导向作用下，再向下转折，由条形口11后端的远锯齿处112流出集尘罩本体1。上述条形口11后端处的进气口和出气口是由内部气流方向自然形成，因为锯片在高速运转时产生的气流沿近锯齿处111处进入集尘罩本体1的空腔12中，在空腔12的其他表面均封闭、条形口11前端处有被切割物阻挡、以及条形口11后端处存在锯缝的情况下，气流必然从远锯齿处112处流出。
进一步而言，上述集尘罩本体中，在集尘罩本体1的前端处内部形成有衔接所述条形口11的前端处与集尘罩本体1的上壁的弧形导向壁13，在集尘罩本体1的后端处内部形成有衔接集尘罩本体1的上壁与条形口的后端处的后导向壁14。
或者，如图5、图6所示，在另一种实施例中，在集尘罩本体1内部的空腔12中设有一弧形隔板15，弧形隔板15的弯度与锯片2的圆弧弯度相当；弧形隔板15的后端延伸至条形口11的后端处，并将条形口11后端分为近锯齿处111和远锯齿处112，近锯齿处111形成进气口，远锯齿处112形成出气口，弧形隔板15的前端延伸至集尘罩本体1的前部并与弧形导向壁13之间具有一定间距形成通气口。当锯片后齿向锯片2前上方抛射尘屑时，没有弧形隔板的情况下，也能得到其等效果结果。通过增加弧形隔板15可使气流通道更加清晰,并可以增强该集尘罩的结构强度。
进一步而言，结合图2所示，所述集尘罩本体1底面的条形口11的两侧内壁的中部分别向内突出形成限位凸条113，两个限位凸 条113之间的距离与锯片2的厚度相当，略大于锯片2厚度，通过两个限位凸条113使得在运行过程中集尘罩本体1不会较大偏移，即使偏移也不会接触到锯片2的锯齿部位，仅仅会摩擦到锯片2的两侧表面，因此可以避免集尘罩被锯片刮伤或打烂的情形，确保作业时的安全。
所述集尘罩本体1的前表面外部呈向前下方倾斜的导向斜面16，即该导向斜面16与锯台5表面呈锐角夹角，其作用是便于被切割物3从集尘罩本体1的前表面与锯台5上表面之间进入集尘罩本体1的下侧。
本实施例中，集尘罩本体1是由左右两块相对称的的罩壳通过螺钉组装而成，其内部的弧形导向壁13、后导向壁14等也是由两个罩壳内侧成型的肋条组合而成。
结合图2、图4所示，所述集尘罩本体1的后下角处开设有供片形连接杆穿入的安装间槽17，在该安装间槽17的两壁之间设有一销轴18。集尘罩本体1安装时，是通过一片形连接杆4来安装的，片形连接杆4的底端固定在锯台或者电锯外壳上，其上开设有一条纵向通槽41，安装时，片形连接杆4穿入集尘罩本体1的安装间槽17中，而安装间槽17中的销轴18则横穿于片形连接杆4的通槽41，由此形成前后左右限位、而上下可相对活动的安装，即集尘罩本体1可沿片形连接杆4的纵向通槽41上下活动，使集尘罩本体1可以被被切割物3抬起并自动贴在被切割物表面，而且不会随被切割物前后移动，同时，因为片形连接杆4在锯片2后方，被切割物3通过锯片2后已被锯开，片形连接杆4也不会阻挡被切割物3。
再结合图7所示，在某些使用场合，操作者需要进行精度较高的锯切作业时，有时需要将集尘罩本体1前端抬起以使锯片露出来，方便操作者将被切割物上的标线与锯片对位，如果要频繁的抬起和 放下显然操作不便。为此，在所述集尘罩本体1的左侧或右侧中部靠前的位置设有一可旋转支杆6,可旋转支杆6的长度大于集尘罩本体1的高度，其旋转轴心位于该集尘罩本体1中部靠上边缘处，所述集尘罩本体1左侧或右侧的表面设有一个或两个与可旋转支杆6厚度相当的限位凸点61。当需要进行精确作业时，可按图7所示的方式利用可旋转支杆6将集尘罩本体1支撑起来，从而方便操作者进行对准操作，对准后，推动被切割物进行锯切时，被切割物会推动可旋转支杆6的底部使之向图中左侧摆动，对集尘罩本体1的支撑作用消失，集尘罩本体1自然下落与被切割物贴合，实现集尘功能；当完成切割后，向图中右方往回拉被切割物时，由于可旋转支杆6的底端与被切割物表面的摩擦力，又会带动可旋转支杆6反向摆动，重新将集尘罩本体1顶起，摆动到与限位凸点61抵触时定位，方便下一次作业。图中位于右边的另一个限位凸点的作用是在大多数不需要使用可旋转支杆6的状态时，将可旋转支杆6直接限位在该限位凸点的上方不掉落即可。显然，限位凸点61也可以用限位凸块、凸条等代替。
本发明集尘罩利用其本身的结构特点和圆形锯片的作业特点，以及流体特性，将被切割物上侧的尘屑通过锯缝归集到被切割物的下侧,再与被切割物下侧出现的尘屑一同进入到被切割物下侧的集尘装置中。其原理在于：当圆形锯片作业时，锯片后齿向锯片的前上方或前后方抛射出大量尘屑，锯片前齿向锯片的后下方抛射出大量尘屑；锯片高速旋转，锯齿就相当于多个小叶片，产生气流。气流从所述集尘罩空腔条形口后端的近锯齿处111进入空腔气流通道中，并随着锯片的弧形流向条形口11前端，在条形口11前端处，由于有被切割物3上表面和气流通道前壁阻挡，再加上弧形导向壁13的导向作用，使得气流向后上方、沿集尘罩本体1的气流通道12 内上表面流向集尘罩本体1后部，在气流通道12后壁的后导向壁14的导向作用下，再向下转折，由条形口11后端的远锯齿处112经过被锯开的被切割物锯缝中流出集尘罩本体1。锯片后齿产生的尘屑被抛射到集尘罩空腔122内形成的气流通道中，被通道12中的气流挟带到条形口11后端的远锯齿处112，进入锯片仓21，再与锯片前齿在被切割物3的下侧产生的尘屑一同进入到被切割物下侧的集尘装置中。尘屑本身只具有向前运动的惯性动能，但在所述空腔气流通道中较强气流的挟持下，尘屑被气流带到气流通道中出气口即锯片后齿远锯齿处，最后经过被切割的切缝后流至被切割物的下侧的。
本发明中，集尘罩本体1的空腔内壁除底面外，其它壁面根据锯片伸入空腔后的形状向外扩展，每个面根据需要与锯片保持适当空隙；空腔12前壁成圆弧状更有利于气流向上后再向后折回。条形口11所在的底面尽量与被切割物贴合以使空腔呈尽可能的封闭状态，被切割物3在锯片后方形成的锯缝是空腔12内气流的唯一出口。
再如图8所示，本实施例中集尘罩本体的形状有一定变化，其适用于在被切割物上侧作业的电圆锯，如泥工切砖用的切割机等，其构造原理与前述实施例是一致的，因为两者的锯片切割时都会在被切割物的上侧与下侧产生气流并抛射出的大量尘屑。
本发明同时提供一种电圆锯的集尘吸尘方法，主要是解决锯片后齿通过被切割物的切缝时，出现的向上前方或上后方的抛尘现象。该方法是通过在被切割物上侧设置一集尘罩，利用锯片工作时在该集尘罩内部形成的流体特性，以被切割物的锯缝作为通道，将锯片后齿向前上方或上后方抛射出的尘屑归集到被切割物下侧；该集尘罩具有一个内部呈空腔结构的集尘罩本体，该集尘罩本体的空腔底面开设有供锯片穿入的条形口，空腔的其他面均为封闭结构；所述集尘罩本体的空腔形成一条仅通过所述条形口与外部相通的气流通 道，该气流通道的进气口和出气口均形成于条形口的后端处，其中，进气口形成于条形口后端的近锯齿处，出气口形成于条形口后端的远锯齿处；该气流通道的走向是：由条形口的后端的近锯齿处处开始，沿锯片外缘呈弧形至条形口的前端，再向上后方转折、沿空腔上壁流向空腔后部，再向下转折，到条形口的后端的远锯片处止；该方法中，锯片后齿向前上方抛射的尘屑先随锯齿旋转产生的气流由锯片后齿近锯齿处进入集尘罩本体空腔的气流通道中，再被气流通道中的气流挟带到锯片后齿远锯齿处，与锯片后齿向上后方抛射的尘屑一同经过被切割物的锯缝流至被切割物的下侧，再与原本产生在被切割物下侧的尘屑一起排出。被切割物下侧一般为锯片仓和与锯片仓连通的吸尘装置，即尘屑被吸尘装置吸走进入集尘袋。
综上所述，本发明根据圆形锯片的形态特征和流体特性，通过一个形态与结构都极其简单的方式，将被切割物上面的尘屑转移到被切割物的下面，从而大大简化了无尘电圆锯的吸尘机构，显著提高了无尘电圆锯的集尘效果。对于无尘电圆锯(或切割机)的小型化、轻便化，以及切割行业的无尘化推广普及都具有重要意义。
显然，本发明集尘罩以及集尘方法不仅适用于配装常见圆形锯片的电圆锯、切割机等，同样也适用于配装砂轮切割片或者类似的圆形切割介体的电动工具。如常见的切割打磨两用的角磨机，所配装的砂轮切割片，进行切割作业时，其锯片后齿都会出现向上前方或上后方抛尘的现象。所以，通过圆形片状介体对作业对象直接进行切割作业且锯片后齿与前齿同时出现抛尘现象的电动工具都是本发明的适用范围。
以上应用实施例仅为对本发明进行描述，但本发明并不局限于以上揭示的实施例，而应当涵盖各种根据本实施例的本质进行的修改、等效组合。

Claims (8)

  1. 一种电圆锯用集尘罩，其包括一个内部呈空腔结构的集尘罩本体，其特征在于：该集尘罩本体的空腔底面开设有供锯片穿入的条形口，空腔的其他面均为封闭结构；所述集尘罩本体的空腔形成一条仅通过所述条形口与外部相通的气流通道，该气流通道的进气口和出气口均形成于条形口的后端处，其中，进气口形成于条形口后端的近锯齿处，出气口形成于条形口后端的远锯齿处；该气流通道的走向是：由条形口的后端的近锯齿处开始，沿锯片外缘呈弧形至条形口的前端，再向上后方转折、沿空腔上壁流向空腔后部，再向下转折，到条形口的后端的远锯片处止。
  2. 根据权利要求1所述的电圆锯用集尘罩，其特征在于：在集尘罩本体的空腔前端处内部形成有衔接所述条形口的前端处与集尘罩本体的空腔上壁的弧形导向壁，在集尘罩本体的空腔后端处内部形成有衔接集尘罩本体的空腔上壁与条形口的后端处的后导向壁。
  3. 根据权利要求1或2所述的电圆锯用集尘罩，其特征在于：在集尘罩本体的空腔内部设有一弧形隔板，弧形隔板的后端延伸至条形口的后端处，并将条形口后端分为近锯齿处和远锯齿处，近锯齿处形成进气口，远锯齿处形成出气口，弧形隔板的前端延伸至空腔前部并与弧形导向壁之间具有一定间距形成通气口。
  4. 根据权利要求1所述的电圆锯用集尘罩，其特征在于：所述集尘罩本体的空腔底面的条形口的两侧内壁的中部分别向内突出形成限位凸条，两个限位凸条之间的距离与锯片的厚度相当，略大于锯片厚度。
  5. 根据权利要求1所述的电圆锯用集尘罩，其特征在于：所述集尘罩本体外部前表面或前表面下侧向前下方倾斜形成导向斜面。
  6. 根据权利要求1所述的电圆锯用集尘罩，其特征在于：所述 集尘罩本体的后下角处开设有供片形连接杆穿入的安装间槽，在该安装间槽的两壁之间设有一销轴；在该安装间槽中还设有一个底部与锯台或电锯外壳固定连接的片形连接杆，片形连接杆上开设有一条供销轴垂直穿过的纵向通槽。
  7. 根据权利要求1所述的电圆锯用集尘罩，其特征在于：所述集尘罩本体的左侧或右侧中部靠前的位置设有一可旋转支杆,可旋转支杆的长度大于集尘罩本体的高度，其旋转轴心位于该集尘罩本体中部靠上边缘处，所述集尘罩本体左侧或右侧的表面设有一个或两个与可旋转支杆厚度相当的限位凸点。
  8. 一种电圆锯的集尘方法，其特征在于：该方法是通过在被切割物上侧设置一集尘罩，利用锯片工作时在该集尘罩内部形成的流体特性，以被切割物的锯缝作为通道，将锯片后齿向前上方或上后方抛射出的尘屑归集到被切割物下侧；该集尘罩具有一个内部呈空腔结构的集尘罩本体，该集尘罩本体的空腔底面开设有供锯片穿入的条形口，空腔的其他面均为封闭结构；所述集尘罩本体的空腔形成一条仅通过所述条形口与外部相通的气流通道，该气流通道的进气口和出气口均形成于条形口的后端处，其中，进气口形成于条形口后端的近锯齿处，出气口形成于条形口后端的远锯齿处；该气流通道的走向是：由条形口的后端的近锯齿处处开始，沿锯片外缘呈弧形至条形口的前端，再向上后方转折、沿空腔上壁流向空腔后部，再向下转折，到条形口的后端的远锯片处止；该方法中，锯片后齿向前上方抛射的尘屑先随锯齿旋转产生的气流由锯片后齿近锯齿处进入集尘罩本体空腔的气流通道中，再被气流通道中的气流挟带到锯片后齿远锯齿处，与锯片后齿向上后方抛射的尘屑一同经过被切割物的锯缝流至被切割物的下侧，再与原本产生在被切割物下侧的尘屑一起排出。
PCT/CN2017/074946 2016-02-29 2017-02-27 电圆锯用集尘罩及集尘方法 WO2017148340A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2018546010A JP2019507689A (ja) 2016-02-29 2017-02-27 電気丸鋸用集塵カバー及び集塵方法
US16/080,660 US20190070702A1 (en) 2016-02-29 2017-02-27 Dust collecting cover and dust collecting method for electric circular saw

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201610109946.0A CN105729591A (zh) 2016-02-29 2016-02-29 电圆锯用集尘罩及集尘方法
CN201610109946.0 2016-02-29
CN201620149259.7U CN205394134U (zh) 2016-02-29 2016-02-29 电圆锯用集尘罩
CN201620149259.7 2016-02-29

Publications (1)

Publication Number Publication Date
WO2017148340A1 true WO2017148340A1 (zh) 2017-09-08

Family

ID=59742514

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/074946 WO2017148340A1 (zh) 2016-02-29 2017-02-27 电圆锯用集尘罩及集尘方法

Country Status (3)

Country Link
US (1) US20190070702A1 (zh)
JP (1) JP2019507689A (zh)
WO (1) WO2017148340A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112021003778T5 (de) * 2020-07-15 2023-08-31 Koki Holdings Co., Ltd. Arbeitsmaschine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1546260A1 (ru) * 1987-12-29 1990-02-28 Ленинградская лесотехническая академия им.С.М.Кирова Ограждение - пылестружкоприемник к деревообрабатывающим станкам
CN2715938Y (zh) * 2004-08-14 2005-08-10 金克勤 手持式电动开槽机
US20110079125A1 (en) * 2009-10-01 2011-04-07 Hsin-Cheng Kuo Circular Saw
JP2011079182A (ja) * 2009-10-06 2011-04-21 Jia Hsin Cheng Enterprise Co Ltd ロータリー鋸盤
CN104002343A (zh) * 2014-06-12 2014-08-27 安徽江淮专用汽车有限公司 圆锯机吸尘防护装置
CN105729591A (zh) * 2016-02-29 2016-07-06 张成峰 电圆锯用集尘罩及集尘方法
CN205394134U (zh) * 2016-02-29 2016-07-27 张成峰 电圆锯用集尘罩

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267974A (en) * 1964-07-16 1966-08-23 Black & Decker Mfg Co Saw dust blower for portable power-driven saw
JPS5247380U (zh) * 1975-10-01 1977-04-04
US4063478A (en) * 1976-10-20 1977-12-20 Diebold Incorporated Saw enclosure construction
JPS5638723U (zh) * 1979-08-31 1981-04-11
JPS5662101A (en) * 1979-10-26 1981-05-27 Yamada Ind Dust collector for electric saw
US4362196A (en) * 1980-09-24 1982-12-07 Hirsh Company Power tool table with safety shut-off
JPS60105U (ja) * 1983-06-17 1985-01-05 日立工機株式会社 丸鋸盤の切削屑排出装置
JPS606402A (ja) * 1983-06-24 1985-01-14 芝浦メカトロニクス株式会社 丸鋸装置
JPS60127902U (ja) * 1984-02-08 1985-08-28 清水建設株式会社 鋸
JPS61172703A (ja) * 1985-01-28 1986-08-04 日立工機株式会社 携帯用電動工具の集じん機構
JPH0368722U (zh) * 1989-11-02 1991-07-08
JPH0645290Y2 (ja) * 1990-10-02 1994-11-24 増田精機株式会社 丸鋸切断装置
US5537748A (en) * 1991-07-09 1996-07-23 Ryobi Limited Cover structure for electric circular saw
US5231906A (en) * 1992-09-30 1993-08-03 Julien Kogej Table saw guard
JPH07227714A (ja) * 1994-02-17 1995-08-29 Kitagawa Denki:Kk 丸鋸切断機
JP3010648U (ja) * 1994-10-28 1995-05-02 株式会社ダイア 金属製棒材切断装置
JP3214295B2 (ja) * 1995-05-12 2001-10-02 日立工機株式会社 携帯用集じん丸のこ
JPH106131A (ja) * 1996-06-25 1998-01-13 Aimetsukusu Kk 集塵装置及び走行切断機
US5857507A (en) * 1996-09-20 1999-01-12 Black & Decker Inc. Table saw
US6796208B1 (en) * 1999-02-19 2004-09-28 Matthew Roy Jorgensen Sawdust collection hood for table saw
US9586335B2 (en) * 2010-01-27 2017-03-07 Sd3, Llc Blade guard with dust collection
JP2008001033A (ja) * 2006-06-23 2008-01-10 Hitachi Koki Co Ltd 切粉排出機構を有する携帯用丸鋸
TWM317912U (en) * 2006-11-13 2007-09-01 Jia Hsin Cheng Entpr Co Ltd Circular saw with dust-collecting cover
JP4936224B2 (ja) * 2007-09-07 2012-05-23 日立工機株式会社 携帯用切断機
US8869786B2 (en) * 2008-07-03 2014-10-28 Mitch Faiweather Chop saw with dust collection system
DE102008043215A1 (de) * 2008-10-28 2010-04-29 Robert Bosch Gmbh Werkzeugmaschinenschutzvorrichtung
US8220372B2 (en) * 2009-04-28 2012-07-17 Credo Technology Corporation Combination table-miter saw safety system
CN203510344U (zh) * 2013-09-25 2014-04-02 冯震 自带吸尘装置的木工台锯
WO2015102906A1 (en) * 2013-12-30 2015-07-09 Robert Bosch Gmbh Airflow managemnet system for a power tool
JP6596249B2 (ja) * 2015-07-21 2019-10-23 株式会社マキタ 加工機
US10751816B2 (en) * 2016-02-17 2020-08-25 Germans Boada, S.A. Protective cooling cover for cutter discs
JP6890965B2 (ja) * 2016-12-15 2021-06-18 株式会社マキタ 携帯用切断機

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1546260A1 (ru) * 1987-12-29 1990-02-28 Ленинградская лесотехническая академия им.С.М.Кирова Ограждение - пылестружкоприемник к деревообрабатывающим станкам
CN2715938Y (zh) * 2004-08-14 2005-08-10 金克勤 手持式电动开槽机
US20110079125A1 (en) * 2009-10-01 2011-04-07 Hsin-Cheng Kuo Circular Saw
JP2011079182A (ja) * 2009-10-06 2011-04-21 Jia Hsin Cheng Enterprise Co Ltd ロータリー鋸盤
CN104002343A (zh) * 2014-06-12 2014-08-27 安徽江淮专用汽车有限公司 圆锯机吸尘防护装置
CN105729591A (zh) * 2016-02-29 2016-07-06 张成峰 电圆锯用集尘罩及集尘方法
CN205394134U (zh) * 2016-02-29 2016-07-27 张成峰 电圆锯用集尘罩

Also Published As

Publication number Publication date
US20190070702A1 (en) 2019-03-07
JP2019507689A (ja) 2019-03-22

Similar Documents

Publication Publication Date Title
US10695937B2 (en) Dust-free multifunctional cutting machine and electric cutter
TWI317685B (en) Dust collection cover attachable to cutter
EP3099455B1 (en) Airflow managemnet system for a power tool
EP2163363A2 (en) Blade guard for power tool having an evacuation system
GB2393419A (en) Sawdust collection device
JPH05192813A (ja) パワーテーブル工具
GB2495205A (en) Saw assembly with pivot hinge dust port
WO2017148340A1 (zh) 电圆锯用集尘罩及集尘方法
US10137548B2 (en) Foot attachment for pneumatic rotary tools
CN211278738U (zh) 一种建筑工程用带有防护罩的圆盘锯
JP5713822B2 (ja) 卓上丸鋸
CN207088052U (zh) 一种无尘拉杆斜断锯
JP3136457U (ja) 集塵機能を搭載し、垂直精度が高く、仕上材を傷付け難く、ホールド性に優れた丸ノコを提供する。
TWM632354U (zh) 斜鋸及電動工具
US20110079125A1 (en) Circular Saw
CN115570630A (zh) 一种自吸尘无尘斜断锯
CN209986336U (zh) 圆锯
CN105729591A (zh) 电圆锯用集尘罩及集尘方法
CN206047238U (zh) 斜切锯用集尘装置
JPH037129Y2 (zh)
CN221112398U (zh) 一种吸尘式刨墙机
CN218138653U (zh) 一种用于自吸尘无尘斜断锯的一体式后防护罩
JPH06335904A (ja) 電動丸鋸の集塵機構
CN211322161U (zh) 一种新型园林锯
TWM559795U (zh) 一種無塵多功能切割機

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2018546010

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17759191

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17759191

Country of ref document: EP

Kind code of ref document: A1