A kind of sander of automatic heat radiation
Technical field
The present invention relates to the sander of a kind of automatic heat radiation.
Background technology
Sander is a kind of manual power tool that body surface carries out grinding process, and it makes mill rotation continuously and healthily by various driving mechanisms, thus body surface of polishing.Just because of mill rotation continuously and healthily, bigger heat can be produced after itself and body surface friction, make mill hot, hot mill works long hours can produce impact to the life-span of mill on the one hand, the body surface polished is caused damage by the too high meeting of its friction temperature on the other hand, causes unnecessary loss.
Summary of the invention
The present invention is directed to deficiency of the prior art, it is provided that the sander of a kind of automatic heat radiation, mill is dispelled the heat by automatically, extends mill service life, and protection is polished object from too high the caused damage of mill temperature.
nullFor solving above-mentioned technical problem,The present invention is addressed by following technical proposals: the sander of a kind of automatic heat radiation,Including mill and the rotating shaft that is connected with described mill,Intake tunnel is offered in described rotating shaft,Described rotating shaft outer wall is circumferentially provided with several fixed blocks,Each described fixed block downside all slidably connects block,A spring it is provided with between described block and described rotating shaft outer wall,Storage cavity is offered in described fixed block,Described storage cavity is connected with described intake tunnel,Described fixed block downside offers water outlet groove,Described water outlet groove is connected with described storage cavity,Slidably connect, in described water outlet groove, the slide block matched with it,Several lower aquaporins are offered in described slide block,The upper side of described slide block is led in described lower aquaporin one end,The other end leads to the right flank of described slide block,When described rotating shaft is static,Described slide block is pushed in described water outlet groove and seals described water outlet groove by described block,The water inlet of described intake tunnel is provided with funnel,Described funnel side is provided with a support bar,A described support bar upper side is provided with rubber bar,Described rotating shaft side is additionally provided with the water inlet pipe of conveying cooling water,The outlet part of described water inlet pipe is positioned at above described funnel,The effluent switch of described water inlet pipe is positioned on movement locus when described rubber bar circles,After described rubber bar promotes described effluent switch,Cooling water is flowed in described funnel by the outlet part of described water inlet pipe,Ladder cavity is offered in described outlet part,Described ladder cavity inwall is provided with some levers,It is provided with cross bar in described outlet part,Described cross bar downside is provided with No. two springs,Described No. two springs are connected to spherical envelope,Described spherical envelope lateral wall is provided with the connecting rod coordinated with described lever,Described spherical envelope downside is provided with pull bar.
During use, along with the rotation of rotating shaft, block is subject to centrifugal forces affect side slip outward, in slipping, slide block is along the inwall down sliding gradually of water outlet groove, making lower aquaporin leave the inwall of water outlet groove, cooling water flows out to outside fixed block from lower aquaporin, and the distance of the distance of block side slip outward depends on the rotating speed of rotating shaft, rotating speed is more fast, skidding distance is more remote, thus the lower aquaporin leaving water outlet groove is more many, water yield is also more big.
In technique scheme, it is preferred that be additionally provided with baffle plate on described rotating shaft outer wall, described baffle plate is positioned at the lower section of described block, and described baffle plate end is connected to water-suction rope.By arranging baffle plate, the cooling water flowed out from lower aquaporin is made to be directly impinging on baffle plate, and broken up by baffle plate, make cooling water can be directly diffused into each position of mill upper side, dispel the heat more uniform, meanwhile, on part cooling water Liu Dao water-suction rope, dispel the heat in each position being diffused into mill upper side along with the swing of water-suction rope.
In technique scheme, it is preferred that be additionally provided with No. two support bars on described rotating shaft outer wall, described No. two support bar upper sides are provided with a bracer, and described block is slidably connected on a described bracer.By arranging No. two support bars and a bracer so that block is more tight with fixed block laminating, and its sealing effectiveness is also better.
The invention has the beneficial effects as follows: mill is dispelled the heat by the present invention in use automatically, extending mill service life, protection is polished object from too high the caused damage of mill temperature.
Accompanying drawing explanation
Fig. 1 is schematic cross-section of the present invention.
Fig. 2 is schematic cross-section during rotating shaft of the present invention rotation.
Fig. 3 is D place enlarged diagram in Fig. 1.
Fig. 4 is outlet part schematic cross-section of the present invention.
Detailed description of the invention
nullBelow in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail: referring to Fig. 1-Fig. 4,A kind of sander of automatic heat radiation,Including mill 1 and the rotating shaft 2 that is connected with described mill 1,Intake tunnel 21 is offered in described rotating shaft 2,Described rotating shaft 2 outer wall is circumferentially provided with several fixed blocks 3,Each described fixed block 3 downside all slidably connects block 4,A spring 41 it is provided with between described block 4 and described rotating shaft 2 outer wall,Storage cavity 31 is offered in described fixed block 3,Described storage cavity 31 is connected with described intake tunnel 21,Described fixed block 3 downside offers water outlet groove 32,Described water outlet groove 32 is connected with described storage cavity 31,The slide block 33 matched with it is slidably connected in described water outlet groove 32,Several lower aquaporins 331 are offered in described slide block 33,The upper side of described slide block 33 is led in described lower aquaporin 331 one end,The other end leads to the right flank of described slide block 33,When described rotating shaft 2 is static,Described slide block 33 is pushed in described water outlet groove 32 and seals described water outlet groove 32 by described block 4.
The water inlet of described intake tunnel 21 is provided with funnel 5, described funnel 5 side is provided with a support bar 51, described support bar 51 upper side is provided with rubber bar 52, described rotating shaft 2 side is additionally provided with the water inlet pipe 6 of conveying cooling water, the outlet part 61 of described water inlet pipe 6 is positioned at above described funnel 5, the effluent switch 62 of described water inlet pipe 6 is positioned on movement locus when described rubber bar 52 circles, after described rubber bar 52 promotes described effluent switch 62, cooling water is flowed in described funnel 5 by the outlet part 61 of described water inlet pipe 6.A number support bar is preferably disposed on the leading flank of funnel so that pushing effluent switch open in this process leaving effluent switch at rubber bar, cooling water can be all introduced in funnel.
Ladder cavity 611 is offered in described outlet part 61, described ladder cavity 611 inwall is provided with some levers 612, it is provided with cross bar 613 in described outlet part 61, described cross bar 613 downside is provided with No. two springs 614, described No. two springs 614 are connected to spherical envelope 615, being provided with the connecting rod 616 coordinated with described lever 612 on described spherical envelope 615 lateral wall, described spherical envelope 615 downside is provided with pull bar 617.By changing the position of spherical envelope, change the water yield of outlet part, so that the amount that rotating shaft throws away cooling water is identical with the water yield of outlet part, that is outlet part can adjust its water yield along with the adjustment of spindle speed, avoid because the water yield of outlet part too much causes that the cooling water in cavity body overflows, cause that cooling water is directly from surface current on the upside of mill to mill downside, cannot effectively proceed sanding operation, concrete adjustment operation is by pulling pull bar to adjust the position of spherical envelope, can be moved horizontally by control pull bar and lever is separated with connecting rod, again by pull bar in vertical direction up or move down, adjust spherical envelope position, move again through in horizontal direction, the lever making correspondence stops connecting rod, spherical envelope position is made to immobilize.
Being additionally provided with baffle plate 22 on described rotating shaft 2 outer wall, described baffle plate 22 is positioned at the lower section of described block 4, and described baffle plate 22 end is connected to water-suction rope 23.By arranging baffle plate, the cooling water flowed out from lower aquaporin is made to be directly impinging on baffle plate, and broken up by baffle plate, make cooling water can be directly diffused into each position of mill upper side, dispel the heat more uniform, meanwhile, on part cooling water Liu Dao water-suction rope, dispel the heat in each position being diffused into mill upper side along with the swing of water-suction rope.
Being additionally provided with No. two support bars 24 on described rotating shaft 2 outer wall, described No. two support bar 24 upper sides are provided with a bracer 25, and described block 4 is slidably connected on a described bracer 25.By arranging No. two support bars and a bracer so that block is more tight with fixed block laminating, and its sealing effectiveness is also better.
During use, along with the rotation of rotating shaft, block is subject to centrifugal forces affect side slip outward, in slipping, slide block is along the inwall down sliding gradually of water outlet groove, making lower aquaporin leave the inwall of water outlet groove, cooling water flows out to outside fixed block from lower aquaporin, and the distance of the distance of block side slip outward depends on the rotating speed of rotating shaft, rotating speed is more fast, skidding distance is more remote, thus the lower aquaporin leaving water outlet groove is more many, water yield is also more big.