CN1476960A - Belt grinding tool - Google Patents
Belt grinding tool Download PDFInfo
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- CN1476960A CN1476960A CNA031460682A CN03146068A CN1476960A CN 1476960 A CN1476960 A CN 1476960A CN A031460682 A CNA031460682 A CN A031460682A CN 03146068 A CN03146068 A CN 03146068A CN 1476960 A CN1476960 A CN 1476960A
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- shell
- belt
- valve body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/18—Accessories
- B24B21/22—Accessories for producing a reciprocation of the grinding belt normal to its direction of movement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
- B24B21/12—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving a contact wheel or roller pressing the belt against the work
- B24B21/14—Contact wheels; Contact rollers; Belt supporting rolls
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Portable Power Tools In General (AREA)
Abstract
The present invention is to provide a belt-type grinding tool which can proceed with rotation direction of a grinding belt, and drive/stop the grinding belt. The present invention relates to a belt-type grinding tool which installs an endless grinding belt between a driven pulley installed at a front end of tension stick of a housing in a stretchable manner, and a drive pulley installed on an air drive motor in a housing. Said grinding belt is rotationally driven by said air motor, characterized in that a valve which exhausts gas toward said air motor is installed on the housing of said belt-type grinding tool, the air motor is stopped or is rotated by moving forward or moving back said valve, a right rotation or left rotation of said valve can rotate or stop the air motor, so a to make said air motor rotate in a clockwise direction or a counterclockwise direction.
Description
Technical field
The present invention relates to following belt-type grinding tool, it has the circulation grinding band of tightening setting by a pair of driven pulley and driving wheel, in particular, the present invention relates to following belt-type grinding tool, it can be only by operating a valve, switch simply direction of rotation, the grinding band of grinding band driving, stop, no matter be the right-handed person, or the operating personnel of left-handed person, all can carry out the grinding operation easily.
Background technology
Below with reference to Fig. 9 the composition of known belt-type grinding tool of past is described, in the drawings, label 101 expression levers, label 102 expressions and this lever form the engine (compressed air engine) of one, label 103 expression driven rollers (driving wheel), the inner arm that spring is set of label 104 expressions, the pull-rod (pull bar) that label 105 expressions are exerted pressure by spring, label 106 expressions are installed on the supporting arm of the driven voller (driven pulley) 107 on this rod, the grinding band of being located between driven roller and the driven voller is opened in label 108 expression expressions, label 109 expression watt shape locks, label 110 expressions are with cover.In addition, in the belt-type grinding tool that forms by scheme as described above, hold lever, drive engine 102, make 108 rotations of grinding band, simultaneously, make to be with to contact, grinding is carried out on the surface that is ground thing with the not shown surface that is ground thing by the right hand.
Summary of the invention
But in belt-type grinding tool as described above, because usually corresponding to right-handed person's operating personnel, the position of setting lever and grinding band concerns, so use the occasion of this grinding tool the operating personnel of left-handed person, its behaviour in service is in factitious state.That is, because the operating personnel of left-handed person hold lever by the left hand as habitual hand, carry out the grinding operation, so when operation, the band position is positioned at the more left side of left hand, grinding operation extremely difficulty is carried out.In addition, if the lever of belt-type grinding tool is fallen turnback (at the state of this figure, lever is in close front, the grinding band is in the state of the top of arrival figure), hold lever by left hand, carry out operation, then setting angle, the position owing to grinding band and lever concerns, posture when the grinding band is positioned at the grinding position is factitious, can't operation.In addition, in the belt-type grinding tool in the past, because the direction of rotation of grinding band is certain, so can't select along the direction of rotation of operating personnel's preference, ease of use is poor.Cut off at the grinding band, abrasion and change the occasion of grinding band, this belt-type grinding tool has must be by hand, the bias force of antagonistic spring is pressed into pull-rod, band is changed operation can't carry out the problem that waits.
So, the object of the present invention is to provide a kind of belt-type grinding tool, solve the above-mentioned problem that existing belt-type grinding tool had, this belt-type grinding tool of the present invention is only by operating a valve, just can freely select the direction of rotation of grinding band, and, all can stop the rotation of compressed air engine no matter where, and adopt when changing the grinding band locking mechanism that can pull bar is fixing.In addition, the object of the present invention is to provide a kind of belt-type grinding tool, it can be changed along the position of the offset bracket that will have regulating wheel up and down easily corresponding to the user mode of band.
The present invention adopts following proposal, and this scheme is advanced a valve, and then makes its rotation, and thus, changeable air stream makes grinding band forward, and reverse rotation in addition, only by valve is retreated, just can cut off air stream simply, stops the rotation of grinding band.Thus, in this belt-type grinding tool, even make grinding tool itself towards corresponding to left-handed person, the right-handed person under the opposite up and down situation, still can freely select the direction of rotation of grinding band, ease of use is very good.So, even for the operating personnel of left-handed person, still can the use feeling identical with right-handed person's operating personnel, carry out operation.In addition, in the time must changing the grinding band, only be pressed into the state of pull bar, just the fixed-site of pull bar can be carried out the replacing operation of grinding band simply by locking.
To achieve these goals, the technology used in the present invention solution relates to a kind of belt grinding tool, wherein, between follow-up pulley and drive pulley, open the grinding band that is provided with circulation, this follow-up pulley is located in the mode that can advance and retreat and is installed on the front end of the pull bar on the shell, and this drive pulley is arranged on the compressed air engine of the inside that is installed in shell, can drive above-mentioned grinding band by above-mentioned compressed air engine rotation, it is characterized in that on the shell of above-mentioned belt-type grinding tool, be provided with and advance by making above-mentioned valve, or retreat to the valve of above-mentioned compressed air engine for exhaust, make the compressed air engine rotation, or stop, and valve is advanced, at this state, to this valve towards the right side, or the left rotary manipulation, can make above-mentioned compressed air engine forward, reverse rotation.
In addition, the present invention relates to following belt-type grinding tool, it is characterized in that above-mentioned valve is formed by valve body and valve collar, this valve body is formed with the air feed path of air and the exhaust channel of air, this valve collar with non-rotatable and slidably mode be installed on the above-mentioned valve body, at the inner peripheral surface of above-mentioned valve collar, be formed with the groove of ring-type, the air feed path that this groove will be formed at above-mentioned valve body side is communicated with the air source; Sealing ring, sealing ring cut off the air source in the both sides of the groove of ring-type; Projection, this projection is embedded in along the inside of the gathering sill of the axial formation of above-mentioned valve body according to mode slidably, gathering sill along valve body, valve collar is advanced, thus, by the groove of above-mentioned ring-type, above-mentioned air feed path is communicated with the air source, at this state, towards right-hand, or left is rotated operation to valve collar, thus, by above-mentioned projection, valve body is also followed this valve collar and is rotated, with the air feed path that is formed on the above-mentioned valve body, with being communicated with for steam vent of the compressed air engine of the inside that is installed on shell, can make the running of compressed air engine forward, or antiport.
In addition, the present invention relates to following belt-type grinding tool, it is characterized in that a end at above-mentioned valve collar, has the retainer that forms by elastomer, at the end of relative shell inner peripheral surface, be formed with towards interior side-prominent inclined plane, on this inclined plane, be provided with the portion that passes through that above-mentioned retainer can pass through, when only the retainer in above-mentioned valve collar was positioned at the position faced by portion, above-mentioned valve collar can advance, in addition, no matter where above-mentioned valve collar is, and above-mentioned retainer all can be crossed above-mentioned inclined plane and valve collar is retreated.
Also have, the present invention relates to belt-type grinding tool, it is characterized in that ring component being installed, in this ring component, be formed with above-mentioned by portion and above-mentioned inclined plane at the end of above-mentioned shell inner peripheral surface.
Have, the present invention relates to following belt-type grinding tool, it is characterized in that above-mentioned pull bar comprises locking mechanism, this locking mechanism can lock pull bar being pressed into the state of pull bar.
In addition, the present invention relates to following belt-type grinding tool, it is characterized in that near driving wheel one side of above-mentioned shell, have the offset bracket of take-up pulley can be according to change in location removably mode be installed on the shell.
If as top specifically described, adopt the present invention, because can be only by a valve is operated, carry out the grinding band rotation, stop, and can freely select the direction of rotation of grinding band, so can be for the operator of right-handed person, left-handed person, all identical sensation is carried out the grinding operation.In addition, owing to can select the direction of dispersing of grinding powder, pretend industry efficient and improve by switching the direction of rotation of grinding band.In addition, when band is changed, owing to adopt the locking mechanism of steady brace simply, so the replacing operation of grinding band is easy.In addition, have the offset bracket of take-up pulley owing to install removably, so even can realize for curved surface, the good effect of grinding etc. easily still.
Description of drawings
Fig. 1 is the vertical view of the belt-type grinding tool of present embodiment;
Fig. 2 is the side view of above-mentioned instrument;
Fig. 3 is the vertical view cutaway drawing of above-mentioned instrument;
Fig. 4 (a) is the more key diagram of (lock-out state) during tape swapping of locking mechanism;
The key diagram of (state that unlocks) when Fig. 4 (b) is the tensioning of locking mechanism band;
Key diagram when Fig. 4 (c) cuts off for the locking mechanism band;
Fig. 5 is the amplification view of compressed air engine part;
Fig. 6 (a)～Fig. 6 (b) is the cutaway view of the action of explanation valve collar and valve body;
Fig. 7 (a) is the vertical view of valve body, Fig. 7 (b), and Fig. 7 (c) is a cutaway view, Fig. 7 (d) is a side view;
Fig. 8 (a)～Fig. 8 (c) is the action specification figure of valve, the expanded view of the state of its air feed for expression section of cylindrical shell and valve body, exhaust;
Fig. 9 is belt-type grinding tool in the past.
The specific embodiment
Embodiment
Below by accompanying drawing, embodiments of the invention are described.
Belt-type grinding tool of the present invention (below be called " grinding tool ") is by the strainer T that keeps the grinding band, open the grinding band B that is located at drive pulley and follow-up pulley, inside is provided with the lever G that the grinding band application is added the compressed air engine A of rotatory force, to compressed air engine A air feed, and carry out the formations such as valve V of the exhaust of compressed air engine A, it constitutes like this, promptly, by the valve V that is installed on the lever G is operated, make compressed air engine A along being rotated in the forward, reverse rotation, along this side direction of operating personnel, or the rotation of the place ahead direction selection grinding band, can carry out grinding to the surface that is ground thing.Divide each part below, its composition is described.
(strainer)
At Fig. 2, among Fig. 3, label 1 expression pull bar at its front end, is equipped with pulley holding member 3, and this pulley holding member 3 rotatably keeps driven pulley 2.This pulley maintaining part 3 is according to can be by axle 4, and the mode of (arrow) direction swing is installed on the front end of pull bar 1 about among Fig. 3, in addition, be used to adjust angle of oscillation screw 5, adjust screw 6 and spring 7 is arranged between pull bar 1 and this pulley maintaining part 3.By this scheme, in Fig. 3, the bias force of antagonistic spring 7 is screwed into and adjusts screw 6, or unscrews this screw 6, thus, is fulcrum with axle 4, adjusts the angle of pulley holding member 3, like this, grinding band B can be positioned the center of pull bar 1.At this moment, by screw 5 according to adjusted angle, fixed block holding member 3.
The end with follow-up pulley 2 opposite sides in the pull bar 1 slidably is inserted into the inside of the slotted hole 8a that is opened in the shell 8, and at the front end of slotted hole 8a, cartridge unit 9 is fixed on the shell 8 by screw 10.In addition, adopt following proposal, wherein, on cartridge unit 9, be formed with notch part 11 (among Fig. 3 about) according to mode with the axis parallel of pull bar 1, be installed on the inside that pin 12 on the pull bar 1 is inserted into this notch part 11, by this pin 12, stoping pull bar 1 is that the center rotates with the axle center.
At Fig. 3, among Fig. 4 (a)～Fig. 4 (c), one end of the pull bar 1 in being inserted into the slotted hole 8a of shell 8 (right side among the figure), be formed with smaller diameter portion 13a, at this smaller diameter portion 13a and than the stage portion between the large-diameter portion 13b, be formed with circumferential groove 14, in addition, in the end of pull bar 1, be formed with a plurality of projections 15.In addition, right-hand end in the figure of pull bar 1 is provided with spring reception part 16, between this spring reception part 16 and shell 8, is provided with extension spring 17.In addition, on shell 8,, the button 18 of L font is set, passes this button 18, pull bar 1 is set as shown in Fig. 4 (a).This button 18 inferior offset by spring 19 and in figure when the user mode of tensioning grinding band B, as shown in Fig. 4 (b), is in the smaller diameter portion 13a state of contact with pull bar 1.
Pass through such scheme, in the occasion of changing grinding band B, if the bias force of opposing extension spring 17, be pressed into pull bar 1, then when being formed at above-mentioned smaller diameter portion 13a and being positioned at the position of button 18 than the circumferential groove 14 of the stage portion between the large-diameter portion 13b, button 18 is under the effect of the bias force of spring 19, fall into the inside (with reference to Fig. 4 (a)) of circumferential groove 14, with the motion locking of pull bar 1,, change grinding band B at this state.In addition, in operation, the occasion that grinding band B cuts off, under the effect of the bias force of extension spring 17, state from Fig. 4 (b), pull bar 1 left in figure flies out, but colludes on button 18 (with reference to Fig. 4 (c)) owing to be arranged at a plurality of projections 15 of the end of pull bar 1, prevents flying out of pull bar 1.In addition, if open the state of establishing (state of Fig. 4 (b)), the bias force of antagonistic spring 19 in order to turn back to the grinding band B that to have changed, be pressed into button 18, then button 18 is thrown off with above-mentioned circumferential groove 14, and pull bar left in figure slides, and returns to the state of Fig. 4 (b).
In Fig. 2, in shell 8, between grinding band B and pull bar 1, be formed with the space, offset bracket 21 is installed, it rotatably supports take-up pulley 20, and this take-up pulley 20 is used for the curved surface of machined object (not shown) is carried out grinding.Take-up pulley 20 sides of this offset bracket 21 are the shape of コ font, the plate 21a of the two sides of this コ font, 21b extends according to the mode of the inside of the gathering sill 22 that can be inserted into shell 8, can be installed on the shell 8 (in Fig. 2, this offset bracket 21 is in the below from figure, towards the top, embed the state in the shell 8).This offset bracket 21 can be extracted out the below from Fig. 2, pull down from shell 8, make take-up pulley 20 be the top side, once more from the top of shell 8, towards the below this offset bracket 21 is inserted (in this occasion, the operating personnel of left-handed person use this grinding tool according to the mode that will transfer turnback).In addition, at the biside plate 21a of offset bracket 21, on the 21b, be provided with towards interior side- prominent projection 23,23, in shell 8 sides, be formed with chimeric recess (not shown), thus, insert this offset bracket 21, make above-mentioned projection 23 chimeric, thus with the recess of shell 8 sides, offset bracket 21 can be positioned on the shell 8, and can prevent offset bracket 21 and shell 8 disengagements.Such coming off can be prevented the projection 23 of usefulness, chimeric recess is arranged at offset bracket 21, or in the shell 8 any one, or when design, it is freely set.
(compressed air engine)
This compressed air engine is by forming with identical the forming of grinding tool in past, if air supply, the rotor that then has in-engine blade rotates, and thus, can pass through driving wheel, makes the rotation of grinding band.
In Fig. 5, this compressed air engine A is made of following part, and this part comprises cylindrical shell 24, and this cylindrical shell 24 is installed on the inside of shell 8, internal diameter off-centre; Rotor 25, this rotor 25 rotatably is arranged at the inside of this cylindrical shell 24, has blade 25a; Plate 24c, 24d, this plate 24c, 24d be from the both sides of cylindrical shell 24, grip roll 25, and the axle 26 at the two ends of this rotor 25 is by being arranged at plate 24c, bearing 27 supportings on the 24d.In addition, driving wheel 28 is fixed in axle 27 the end of a side (bottom side in the figure) of rotor 25 by nut 29, and the grinding band B of circulation is installed on this driving wheel 28, is arranged on the driven pulley 2 of front end of above-mentioned pull bar 1 and the pull bar 20 (with reference to Fig. 1).
On cylindrical shell 24, be formed with supply, discharge the hole 24a of air, 24b (in the valve system of Miao Shuing, specifically describing in the back) in addition, between the periphery and shell 8 of cylindrical shell 24, is formed for discharging the stream 30 of air.In addition, on the wall of the shell 8 of opposition side, be formed with 2 hole 8a, 8b (Fig. 8 that will describe with reference to the back), this hole 8a, 8b are used for the air supply to compressed air engine A, or discharge air; Steam vent 31,31, this steam vent 31,31 is communicated with above-mentioned stream 30, according to these two hole 8a, the mode that 8a faces is provided with the valve body 33 of the valve V that will describe the back.In this compressed air engine A,,, make rotor 25 rotations then to this compressed air engine A air supply if valve V is operated.Form following proposal, wherein, the air of inside that supplies to cylindrical shell 24 is after making rotor 25 rotations with blade 25a, by stream 30, from the hole 8a towards a side of steam vent 31 exhausts, to outside exhaust.In addition, in the outside of driving wheel 28 (lower side among Fig. 5), by screw 32A (with reference to Fig. 3), be equipped with and cover 32 in the mode of loading and unloading, this lid 32 can take off so that change operation such as grinding band B.
(valve system)
At Fig. 6 (a), Fig. 6 (b), Fig. 7 (a)～Fig. 7 (d) is among Fig. 8, valve V is used for to above-mentioned compressed air engine A air supply, discharges air, and it is by valve body 33, valve collar 34 constitutes, and this valve collar 34 is can not rotating relatively, and slidably mode is installed on the periphery of valve body 33.Pass through such scheme, if valve collar 34 is advanced on valve body 33, then be in and pass through valve body 33, can be to the state of compressed air engine A air feed, in addition, if make its rotation at the state that valve collar 34 is advanced, then valve body 33 also can be followed above-mentioned valve collar 34 and rotate, can air be supplied with compressed air engine A (concrete scheme will be described later) from valve body 33.
In addition, on valve body 33, be provided with pin 42, this sells the anglec of rotation of 42 limiting valve main bodys 33, and this pin 42 embeds the inside of the recess 8b that is formed at shell side.Thus, this valve body 33 can move in the inside of above-mentioned recess 8b, until the position intermediate of pin 42 from Fig. 8 (a)～Fig. 8 (c), contacts with the left and right sides wall of recess 8b.In addition, on the 1st air feed path 37,, be provided with air feed with hose transition 52 as shown in Fig. 6 (a), Fig. 6 (b).In addition, on valve body 33, as shown in Fig. 6 (a), Fig. 6 (b), 7, be formed with exhaust channel 43, this exhaust channel 43 be formed at the exhaust channel 53 (with reference to Fig. 6 (a), Fig. 6 (b)) of air feed and be communicated with the periphery of hose transition 52, can pass through exhaust hose 54, air is discharged to the outside.
On the periphery of valve body 33, according to non-rotatable, and slidably mode is provided with valve collar 34.That is, on the periphery of valve body 33, be formed with gathering sill 45 vertically, the projection 46 in interior week that is formed at valve collar 34 is chimeric with the inside of this gathering sill 45, and both are according to can not counterrotating mode constituting.In addition, in the interior week of valve collar 34, be formed with the groove 47 of ring-type, the groove 47 of this ring-type is communicated with the intercommunicating pore 39,40 of above-mentioned valve body 33.The both sides of groove 47 are provided with sealing ring 48, and sealing ring 48 is with the inner peripheral surface sealing of the outer peripheral face and the shell 8 of valve body 33.One of them sealing ring 48 is arranged between intercommunicating pore 39 and the intercommunicating pore 40 when valve collar 43 is retreated, and stops the air feed to compressed air engine A.
In addition, on at least 1 position of valve collar 34, be fixed with the retainer 49 that forms by spring part according to mode along the springing of interior external diameter direction, in addition, in relative shell 8 one sides, be provided with valve locating snap ring 50, this valve locating snap ring 50 has the 50a of the portion that passes through that above-mentioned retainer 49 can pass through, and stops stage portion 50b and the inclined plane 51 that enters.In this example, form according to the mode that the part of valve locating snap ring 50 lacks by the 50a of portion.This valve locating snap ring 50 is as shown in Fig. 6 (a), Fig. 6 (b), is the shape that has towards interior side-prominent inclined plane 51.Thus, only at above-mentioned retainer 49 when being arranged at the 50a of the portion that passes through on the valve locating snap ring 50, valve collar 34 can be from the state of Fig. 6 (a), advance to the state of Fig. 6 (b), in addition, valve collar 34 constitutes in the following manner, this mode is: its opposite shell 8 no matter, in the position of which type of anglec of rotation, all can make retainer 49 distortion, it is retreated.If plan to make valve collar from the another location, advance, then retainer 49 contacts with stage portion 50b, stops advancing of valve collar 34.In this example, form stage portion 50b, but also can be simple end.
If at above-mentioned retainer 49 by being arranged at the state of the 50a of the portion that passes through on the locating snap ring 50, valve collar 34 is advanced, one of them sealing ring 48 that then is arranged at the interior week of valve collar 34 is positioned at the place ahead by hole 40, the groove 47 of above-mentioned ring-type makes the 1st air feed path the 37, the 2nd air feed path 38 be communicated with (with reference to Fig. 6 (b)) according to locating across the intercommunicating pore 39 of valve body 33 sides and the mode between the intercommunicating pore 40.If at this state, make valve collar 34 rotations, then can realize following situation, promptly, valve body 33 rotation contacts with the wall of recess 8b on being formed at shell 8 until above-mentioned pin 42, be formed on the valve body 33 the 2nd air feed path 38 be formed at shell 8 on air feed, hole 8a that exhaust is used in one be communicated with, the hole 8a that another air feed, exhaust are used is communicated with exhaust channel 43 on being formed at valve body 33, rotation compressed air engine A (with reference to Fig. 8 (a)～Fig. 8 (c)).When this compressed air engine A rotates, the exhaust of this compressed air engine A is by being formed at the stream 30 (with reference to Fig. 5) between cylindrical shell 24 and the shell 8 and being formed at the hole 31 that the exhaust on the shell 8 is used, and be formed at exhaust channel 43 on the valve body 33, by exhaust hose 54, towards outside drain.In addition, if in the rotary course of compressed air engine A, valve collar 34 is retreated, then strains take place in retainer 49, cross the inclined plane 51 of valve locating snap ring 50 and move.Thus, a sealing ring 48 that is arranged at the interior week of valve collar 34 can cut off the connected state of the 1st air feed path the 37, the 2nd air feed path 38 between intercommunicating pore 39 and intercommunicating pore 40, stops the rotation of compressed air engine.
According to form mode cylindrical shell 24 that be provided with, internal diameter off-centre that the valve V that forms faces as shown in Fig. 8 (a)～Fig. 8 (c) by above-mentioned, be included in inside and have the rotor 25 of blade 25a, in addition, be formed with the hole 24b that 2 hole 24a using for exhaust and exhaust are used.On the shell 8 of the periphery that is arranged at cylindrical shell 24, the hole 24a that supplies exhaust to use corresponding to cylindrical shell 24 is formed with above-mentioned hole 8a, on shell 8, by sealing ring 41, be provided with by the aforesaid valve body 33 (with reference to Fig. 5, Fig. 6 (a), Fig. 6 (b)) that constitutes of forming.Thus, valve collar 34 is advanced, at this state, by valve collar 34, make valve body 33 rotations, then can supply air to the inside of cylindrical shell 24 by the hole 8a and the hole 24a that is formed at a side of cylindrical shell 24 of the 2nd an air feed path 38 and a side that is formed at shell 8, by blade 25a, rotor 25 (with reference to Fig. 8 (a)～Fig. 8 (c)).In addition, at this moment, from the part of compressed air engine A air discharged, from the hole 24b that the exhaust of cylindrical shell 24 is used, enter the path 30 that is formed between cylindrical shell 24 and the shell 8, the hole of using by exhaust 31 arrives the exhaust channel 43 that is arranged on the valve body 33, and another part of above-mentioned air is from another hole 24a that exhaust is used, by another hole 8a that uses for exhaust, arrive 43, two strands of air of exhaust channel by exhaust hose 54, discharge to the outside.
Below action that formed by such scheme, grinding tool is described.
In Fig. 3, if make valve collar 34 rotations, corresponding to the 50a of the portion that passes through that is arranged at the valve locating snap ring 50 on the shell 8, the retainer 49 that is arranged on the valve collar 34 is advanced, then be arranged at the place ahead that is positioned at intercommunicating pore 40 in the sealing ring 48 in interior week of valve collar 34, and groove 47 is communicated with the 1st air feed path 37 and the 2nd air feed path 38 across between intercommunicating pore 39 and the intercommunicating pore 40.At this moment, be in air and do not supply with the centre of the compressed air engine A (state of Fig. 8 (b).If at this state, make valve collar 34 rotations, then valve body 33 is also followed 34 rotations of this valve collar, and the pin 42 that is arranged at the front end of valve body 33 moves, until be formed at shell 8 on the wall of recess 8b contact (state of Fig. 8 (a)), at this moment, the 2nd air feed path 38 can be communicated with the hole 8a of a side of using for exhaust on being formed at shell 8, and rotatable compressed air engine A follows the rotation of this compressed air engine A, B is rotatable for the grinding band, carries out the grinding operation.In addition, if at the state that valve collar 34 is advanced, along making valve collar 34 rotations with the opposite direction of advancing, owing to valve body 33 also edge oppositely follows this valve collar 34 to rotate, so can realize following situation, promptly, be arranged at pin 42 rotations on the valve body 33, until contacting (state of Fig. 8 (c)) with the wall of the recess 8b of the opposition side that is formed at shell 8 sides, the 2nd air feed path 38 and is formed on the shell 8, is communicated with the hole 8a of the above-mentioned hole 8a opposition side of using for exhaust, along compressed air engine A being rotated with above-mentioned opposite direction, make air engine A antiport, make grinding band B reverse rotation.
If when finishing the grinding operation, state in former state, outer shroud 34 is retreated, then can realize following situation, that is, and retainer 49 distortion, it crosses the inclined plane 51 of valve locating snap ring 50, be formed at sealing ring 48 that the mode of groove 47 in the interior week of valve collar 34 is provided with according to clamping one is cut off air between intercommunicating pore 39 and intercommunicating pore 40, the rotation of compressed air engine A is stopped.
In addition, when changing grinding band B, stop the rotation of compressed air engine A, 32A operates to mounting screw, takes off to cover 32, in addition, the bias force of opposing extension spring 17, be pressed into pull bar 1, in this occasion, when the circumferential groove 14 on being formed at pull bar 1 arrives the position of button 18, this button 18 is under the effect of the bias force of spring 19, drop into the inside of circumferential groove 14, in other words, can be by the bias force of spring 19, button 18 is extruded (with reference to Fig. 4 (a)) towards foreign side, with the motion locking of pull bar 1,, change grinding band B at this state.
In addition, be in the operation occasion that grinding band B cuts off, under the effect of the bias force of extension spring 17, the left of pull bar 1 in figure flies out, still, owing to the projection 15 of the end that is arranged at pull bar 1 and an end in contact of button 18, so can prevent the situation that pull bar 1 flies out from shell 8.
Have again, use the occasion of air type grinding tool at common state (grinding band B rotates in the counterclockwise direction) the operating personnel of left-handed person, the offset bracket 21 that is installed on the bottom side of shell 8 is transformed into the top side, according to 180 degree grinding tool is turned round, valve collar 34 is advanced, and along oppositely making valve collar 34 rotations.Can by valve collar 34,, make valve body 33 forward and reverse rotations according to job status, switch the direction of rotation of grinding band B along the direction of dispersing of grinding powder.In addition, the occasion finishing or stopping operation as aforementioned, only makes valve collar 34 retreat, and just can stop the rotation of compressed air engine A.In the occasion that above-mentioned offset bracket 21 is installed, can carry out curve surface grinding, can overlook grinding by pulling down offset bracket.
In the above, embodiments of the invention are described, still, if the path that is formed at the air on valve collar, valve body, the shell then can form various passage shape for realizing the path of above-mentioned function.In addition, the mechanism of fixed bias carriage also can adopt the various forms of screw rod etc.In addition, the foregoing description only is exemplary, is not breaking away from spirit of the present invention, or under the situation of main feature, the present invention can implement according to other various forms, should not explain with limiting.
Claims (6)
1. belt-type grinding tool, wherein, between follow-up pulley and drive pulley, open the grinding band that is provided with circulation, this follow-up pulley is located in the mode that can advance and retreat and is installed on the front end of the pull bar on the shell, this drive pulley is arranged on the compressed air engine of the inside that is installed in shell, can drive above-mentioned grinding band by above-mentioned compressed air engine rotation, it is characterized in that on the shell of above-mentioned belt-type grinding tool, being provided with can be to the valve of above-mentioned compressed air engine for exhaust, can advance by making above-mentioned valve, or retreat, make the compressed air engine rotation, or stop, and valve is advanced, at this state, to this valve towards the right side, or left rotary manipulation, can make above-mentioned compressed air engine forward, reverse rotation.
2. belt-type grinding tool according to claim 1, it is characterized in that above-mentioned valve is formed by valve body and valve collar, this valve body is formed with the air feed path of air and the exhaust channel of air, this valve collar with non-rotatable and slidably mode be installed on the above-mentioned valve body, inner peripheral surface at above-mentioned valve collar, be formed with the groove of ring-type, the air feed path that this groove will be formed at above-mentioned valve body side is communicated with the air source; Sealing ring, sealing ring cut off the air source in the both sides of the groove of ring-type; Projection, this projection is embedded in along the inside of the gathering sill of the axial formation of above-mentioned valve body according to mode slidably, gathering sill along valve body, valve collar is advanced, thus, by the groove of above-mentioned ring-type, above-mentioned air feed path is communicated with the air source, at this state, towards right-hand, or left is rotated operation to valve collar, thus, by above-mentioned projection, valve body is also followed this valve collar and is rotated, with the air feed path that is formed on the above-mentioned valve body, with being communicated with for steam vent of the compressed air engine of the inside that is installed on shell, can make the running of compressed air engine forward, or antiport.
3. belt-type grinding tool according to claim 2, it is characterized in that a end at above-mentioned valve collar, has the retainer that forms by elastomer, at the end of relative shell inner peripheral surface, be formed with towards interior side-prominent inclined plane, on this inclined plane, be provided with the portion that passes through that above-mentioned retainer can pass through, when only the retainer in above-mentioned valve collar is positioned at the position faced by portion, above-mentioned valve collar can advance, in addition, no matter where above-mentioned valve collar is, and above-mentioned retainer all can be crossed above-mentioned inclined plane and valve collar is retreated.
4. belt-type grinding tool according to claim 3 is characterized in that at the end of above-mentioned shell inner peripheral surface ring component being installed, and is formed with above-mentioned by portion and above-mentioned inclined plane in this ring component.
5. according to any one the described belt-type grinding tool in the claim 1～4, it is characterized in that above-mentioned pull bar comprises locking mechanism, this locking mechanism can lock pull bar being pressed into the state of pull bar.
6. according to any one the described belt-type grinding tool in the claim 1～5, it is characterized in that in driving wheel one side near above-mentioned shell, have the offset bracket of take-up pulley can be according to change in location removably mode be installed on the shell.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP220567/2002 | 2002-07-30 | ||
| JP220567/02 | 2002-07-30 | ||
| JP2002220567A JP3711095B2 (en) | 2002-07-30 | 2002-07-30 | Belt grinding tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1476960A true CN1476960A (en) | 2004-02-25 |
| CN1291814C CN1291814C (en) | 2006-12-27 |
Family
ID=31884297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031460682A Expired - Lifetime CN1291814C (en) | 2002-07-30 | 2003-07-15 | Belt grinding tool |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP3711095B2 (en) |
| KR (1) | KR100494187B1 (en) |
| CN (1) | CN1291814C (en) |
| HK (1) | HK1059910A1 (en) |
| TW (1) | TWI236950B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100503165C (en) * | 2005-01-21 | 2009-06-24 | 日东工器株式会社 | Belt-style grinding tool |
| CN107825255A (en) * | 2017-09-30 | 2018-03-23 | 和县科嘉阀门铸造有限公司 | A kind of valve interior wall sanding apparatus |
| CN108778622A (en) * | 2016-03-11 | 2018-11-09 | 日东工器株式会社 | Belt-type grinding tool |
| CN112004639A (en) * | 2018-04-27 | 2020-11-27 | 日东工器株式会社 | Belt type grinding tool |
| CN113146369A (en) * | 2020-05-29 | 2021-07-23 | 山东哈德斯特轨道交通科技有限公司 | Steel rail grinding device |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4847363B2 (en) * | 2007-02-09 | 2011-12-28 | 日東工器株式会社 | Endless belt grinding tool |
| JP4912976B2 (en) * | 2007-07-31 | 2012-04-11 | 日東工器株式会社 | Pneumatic tool |
| JP5148297B2 (en) * | 2008-01-10 | 2013-02-20 | 株式会社マキタ | Marnoco |
| US9266211B2 (en) * | 2012-05-25 | 2016-02-23 | Shiroki Corporation | Method and apparatus for smoothing welded member |
| JP6200660B2 (en) | 2013-02-28 | 2017-09-20 | 日東工器株式会社 | Belt grinding tool |
| JP6568997B2 (en) | 2016-03-11 | 2019-08-28 | 日東工器株式会社 | Belt grinding tool |
| CN110785266B (en) * | 2017-06-23 | 2022-10-04 | 日东工器株式会社 | Pneumatic tool |
| TWI688450B (en) * | 2019-04-30 | 2020-03-21 | 大里興業有限公司 | Handheld belt grinding machine |
| CN112775794B (en) * | 2019-11-11 | 2023-07-25 | 株式会社牧田 | Belt sander |
| WO2021258132A1 (en) * | 2020-06-23 | 2021-12-30 | White International Pty Ltd | Apparatus for finishing a workpiece |
-
2002
- 2002-07-30 JP JP2002220567A patent/JP3711095B2/en not_active Expired - Lifetime
-
2003
- 2003-06-10 KR KR10-2003-0036969A patent/KR100494187B1/en active IP Right Grant
- 2003-07-09 TW TW092118699A patent/TWI236950B/en not_active IP Right Cessation
- 2003-07-15 CN CNB031460682A patent/CN1291814C/en not_active Expired - Lifetime
-
2004
- 2004-04-19 HK HK04102728A patent/HK1059910A1/en not_active IP Right Cessation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100503165C (en) * | 2005-01-21 | 2009-06-24 | 日东工器株式会社 | Belt-style grinding tool |
| CN108778622A (en) * | 2016-03-11 | 2018-11-09 | 日东工器株式会社 | Belt-type grinding tool |
| CN107825255A (en) * | 2017-09-30 | 2018-03-23 | 和县科嘉阀门铸造有限公司 | A kind of valve interior wall sanding apparatus |
| CN112004639A (en) * | 2018-04-27 | 2020-11-27 | 日东工器株式会社 | Belt type grinding tool |
| CN113146369A (en) * | 2020-05-29 | 2021-07-23 | 山东哈德斯特轨道交通科技有限公司 | Steel rail grinding device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3711095B2 (en) | 2005-10-26 |
| KR20040011349A (en) | 2004-02-05 |
| KR100494187B1 (en) | 2005-06-10 |
| CN1291814C (en) | 2006-12-27 |
| JP2004058216A (en) | 2004-02-26 |
| TWI236950B (en) | 2005-08-01 |
| TW200402347A (en) | 2004-02-16 |
| HK1059910A1 (en) | 2004-07-23 |
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