A kind of A type frame slewing equipment with distributed-power transmission mechanism
Technical field
The present invention relates to a kind of A type frame slewing equipment of glass production line, belong to glass production manufacturing equipment, particularly a kind of A type frame slewing equipment greatly improving the operating accuracy of production efficiency and production line.
Background technology
Plasma display is the display of new generation after CRT, LCD, and it is come out the sixties in 20th century, starts to start batch production mid-term in the nineties in 20th century.Because this device has series of advantages, as wide in visual angle, slim, image is undistorted, fast response time, life-span are long, have good luminous efficiency and brightness, have memory function, should make large scale etc.Therefore it be generally acknowledge at present realize high definition digital television and the most promising device of giant-screen wall hung television.Along with the raising of colour plasma display resolution ratio and the increase of screen size, also more and more higher to the requirement of Colour PDP display base plate glass.Therefore also more and more higher to the requirement of the production technology of PDP base plate glass, and the requirement also corresponding raising to the packaging end of base plate glass.Along with the continuous expansion of glass substrate, be extended to 2470mm × 2310mm by original 1m is square, the storage and transportation apparatus A type frame of glass is also increasing, and the slewing equipment size working transitional function of taking over from the past and setting a new course for the future between production line is also increasing accordingly.
The slewing equipment being usually used in bearing glass at present mainly contains two kinds of versions.One is that panoramic table upper and lower is connected by turntable bearing, the outer astragal tooth of turntable bearing.Motor reducer output shaft is provided with gear, by gears meshing, provides the power that turntable rotates.This version turntable bearing is less, and when turntable length and width size is larger, need corresponding larger sized turntable bearing, cost of manufacture is higher, and weight is large, and it is more difficult to install.In addition when the A type frame of fully loaded glass is put on turntable, there is impact to turntable, affect the life-span of turntable bearing and the rotating accuracy of turntable.Another kind is provided with thrust bearing in the middle part of panoramic table, and outer the enclosing in bottom is provided with cam guide, and top is provided with the orbital plane of curved track guidance tape as cam guide.Top is also provided with along circular arc base plate chain in addition, and motor reducer output shaft is provided with sprocket wheel, the power providing turntable to rotate by Chain conveyer.In the middle of this version, thrust bearing bears tilting moment comparatively greatly, and structure is comparatively complicated.Same in addition when the A type frame of fully loaded glass is put on turntable, there is impact to turntable, affect cam guide, the life-span of thrust bearing and the rotating accuracy of turntable.
Said gear, gear ring type A type frame slewing equipment positioning precision are high, and transmission is comparatively steady, but physical dimension is comparatively large, therefore needs to coordinate larger section bearing; The cost of gear, gear ring is higher and use servo motor transmission, involves great expense, complex structure, the unfavorable factors such as maintenance difficult.
Above-mentioned chain, sprocket type A type frame slewing equipment positioning precision are general, and transmission stability is general, need to coordinate servo motor transmission and larger end face bearing.Panoramic table requires that machining accuracy is higher, causes the cost of complete machine higher, and the unfavorable factor such as installation and debugging are comparatively difficult, complex structure.
To cog, gear ring type A type frame panoramic table and chain, sprocket type A type frame panoramic table the limitation of self that produces of version, in large scale turntable, seemed more obvious, not too adapted to large-sized slewing equipment.
Summary of the invention
The present invention is that the production that the existing A type frame slewing equipment of solution cannot adapt to sized rectangular glass substrate causes the low technical problem reduced with production line control accuracy of production efficiency, devise a kind of A type frame slewing equipment with distributed-power transmission mechanism, the supporting gravity of original slewing equipment is arranged on the centre of gyration to have transferred to and be distributed on below slewing equipment, and adopt distributed-power transmission mechanism, the convenient panoramic table that controls rotates, and by sensor and pneumatic locating dowel accurate limiting.
The present invention is the technical scheme realizing goal of the invention employing, a kind of A type frame slewing equipment with distributed-power transmission mechanism, comprise the Master Control Unit of storing control program, base, by the panoramic table of the spacing heart in the base of centralized positioning assembly, and the A type frame of panoramic table upper table surface is arranged on by location structure assembly, it is characterized in that: in the structure of described slewing equipment, also comprise the distributed-power transmission mechanism be arranged on below panoramic table, be arranged on the precise positioning mechanism between panoramic table and base, distributed-power transmission mechanism forms supporting construction below panoramic table, panoramic table is by the distributed-power transmission mechanism be connected with the control output end of the Master Control Unit rotary freedom that to have with centralized positioning assembly be center of rotation, and it is spacing by precise positioning mechanism.
A type frame slewing equipment has two main technique actions.First being revolution action, is secondly positioning process action.Realize revolution and two, location precision be all very high and structure is simple, cheap, maintenance and debugging easily scheme be a very very difficult thing.Prior art middle gear, gear ring type A type frame slewing equipment and maintenance and debugging very difficult, need to employ special commissioning staff to debug, and the gold of employing of commissioning staff is quite high, significantly increases the input cost of glass; And the cost of large-sized gear, gear ring is high and use servo motor transmission, involve great expense, complex structure.And the positioning precision of chain, sprocket type A type frame slewing equipment is general, transmission stability is poor, needs to coordinate servo motor transmission and larger end face bearing.And for the automatic production line of glass, the requirement on machining accuracy working the slewing equipment of transitional function of taking over from the past and setting a new course for the future is very high, this is the maximum shortcoming of chain drive, its driving error is greatly known by mechanical field technical staff, therefore be not suitable for the automatic production line of glass, more cannot realize turning round accurately action and location action accurately.
Key of the present invention adopts distributed-power transmission plan, first avoid allowing the centre of gyration of slewing equipment bear whole weight, to ensure its rotation precision, avoid excessive wear, distributed-power transmission mechanism assume responsibility for again the supporting construction of panoramic table simultaneously, the balanced weight that slewing equipment carries is distributed on road wheel, and positive transport wheel is from speed reducer with motor, controlled to start or stop by Master Control Unit, be convenient to control, also can conveniently carry out changing or adjusting for the larger road wheel of wearing and tearing simultaneously; Secondly, by the detection module that puts in place, precise positioning mechanism detects that panoramic table rotate in place, Master Control Unit controls motor reducer makes positive transport wheel stop walking, realizes just location, now, the aligning locating slot of locating dowel, but not necessarily aim at the center of locating slot accurately, but drive locating dowel to rotate by the driving mechanism piston rod of locating dowel, locating dowel is slided along location trough rim, locating dowel is positioned at the center of V-type groove accurately the most at last, realizes accurately locating.
Another key of the present invention is: adopt the automatic wear compensation type centre of gyration, when road wheel and guide pass wearing and tearing, because gyroaxis is fixedly connected with the inner ring of bearing, bearing outer ring and swivel sleeve are interference fits, when the load of gyroaxis carrying is greater than certain value, the outer ring of bearing and swivel sleeve have and are slidably matched, realize the self-adjusting that axial rub is impaired, simultaneously for avoiding bearing not because axial load load is excessive and damaging, also be provided with automatic wear compensation position-limit mechanism, bearing gland is under the effect of Compress Spring, can simultaneously by bearing gland downwards with guide-localization post for benchmark carries out fine setting downwards again to adapt to the change in size after wearing and tearing, now, bearing gland carries axial load, avoid damaging bearing.
The device of the application of the invention also coordinates industrial robot or other slice loading and unloading devices former sheet glass or production line can be dropped into end and put into the first unit of production line to reach or coordinate industrial robot or other handlers to be captured by the end of the base plate glass processed from production line.Be loaded in the glass A type frame of slewing equipment.Can ensure that by using this device piece putting machine device people or upper sheet devices or lower sheet devices complete precision and the reliability of upper and lower blade technolgy action.And by with fork truck, the A type frame filling glass is become a reality from the idea of slewing equipment upper slice and bottom sheet.Greatly improve the operating accuracy of production efficiency and production line.
Below in conjunction with accompanying drawing, the present invention is further detailed.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is A direction view in Fig. 1.
Fig. 3 is centralized positioning modular construction schematic diagram in the present invention.
Fig. 4 is the positive transport wheel structural representation with motor reducer in the present invention.
Fig. 5 is the structural representation of precise positioning mechanism release in the present invention.
The structural representation of Tu6Shi Tu5Zhong precise positioning mechanism locking.
Fig. 7 is the top view of V-type locating slot in Fig. 5.
1 represents A type frame, 2 represent panoramic table, 3 represent base, 4 represent centralized positioning assembly, 4-1 represents swivel sleeve, 4-2 represents bearing, 4-3 represents gyroaxis, 4-4 represents bearing spacer, 4-5 represents nut, 4-6 represents bearing gland, 4-7 represents bearing inner race, 4-8 represents bearing outer ring, 4-9 represents guide and limit pin, 5 represent distributed-power transmission mechanism, 5-1 represents positive transport wheel, 5-2 represents secondary row travelling wheel, 5-3 represents motor reducer, 5-4 represents shaft coupling, 6 represent precise positioning mechanism, 6-1 represents locating dowel, 6-2 represents locating slot, 6-3 represents axle, 6-4 represents turning cylinder, 6-5 represents cylinder block, 6-6 represents piston rod, 6-7 represents the first drive link, 6-8 represents needle bearing, 6-9 represents the second drive link, 7-1 is upper spring seat, 7-2 is spring, 7-3 is lower spring cup, 7-4 is thrust bearing.
Detailed description of the invention
A kind of A type frame slewing equipment with distributed-power transmission mechanism, comprise the Master Control Unit of storing control program, base 3, by the spacing panoramic table 2 at base 3 center of centralized positioning assembly 4, and the A type frame 1 of panoramic table 2 upper table surface is arranged on by location structure assembly, the distributed-power transmission mechanism 5 be arranged on below panoramic table 2 is also comprised in the structure of described slewing equipment, be arranged on the precise positioning mechanism 6 between panoramic table 2 and base 3, distributed-power transmission mechanism 5 forms supporting construction below panoramic table 2, panoramic table 2 is by the distributed-power transmission mechanism 5 be connected with the control output end of the Master Control Unit rotary freedom that to have with centralized positioning assembly 4 be center of rotation, and it is spacing by precise positioning mechanism 6.
Described centralized positioning assembly 4 is automatic wear compensation type centres of gyration, structure comprises location swivel sleeve 4-1 on the base 3, be positioned at gyroaxis 4-3 on panoramic table 2 and bearing 4-2, described gyroaxis 4-3 is spacing in swivel sleeve 4-1 by bearing 4-2, gyroaxis 4-3 forms being rotatably assorted of horizontal direction by bearing 4-2 and swivel sleeve 4-1, and the inner ring 4-7 of bearing is fixedly connected with gyroaxis 4-3, outer ring 4-8 and swivel sleeve 4-1 is formed vertically to being slidably matched by the specified axial load that panoramic table 2 carries.
Also comprise in the structure of described centralized positioning assembly 4 and being connected with gyroaxis 4-3 by the spacing bearing gland 4-6 in swivel sleeve 4-1 port of guide-localization post 4-9, the spacing card neck of buffer-type be positioned at above bearing gland 4-6, the spacing card neck of buffer-type and bearing gland 4-6 form automatic wear compensation position-limit mechanism; Described bearing 4-2 is axially arranged with two groups along swivel sleeve 4-1, arranges bearing spacer 4-4 between two groups of bearing 4-2.
The structure of the spacing card neck of described buffer-type comprises: be positioned at positive stop lug boss on gyroaxis 4-3 and successively through gyroaxis 4-3 and by spacing upper spring seat 7-1, spring 7-2 and the lower spring cup 7-3 of positive stop lug boss, upper spring seat 7-1, spring 7-2 and lower spring cup 7-3 and gyroaxis 4-3 are formed and be slidably matched; Between the spacing card neck of buffer-type and bearing gland 4-6, be provided with thrust bearing 7-4, gyroaxis 4-3 is formed by thrust bearing 7-4 and bearing gland 4-6 and is rotatably assorted.
The structure of described distributed-power transmission mechanism 5 comprises: one group of positive transport wheel 5-1 with motor reducer 5-3 be evenly distributed on centered by centralized positioning assembly 4 below panoramic table 2; Described positive transport wheel 5-1 is connected by shaft coupling 5-4 with the output shaft of motor reducer 5-3.
Also comprise in the structure of described distributed-power transmission mechanism 5: one group of secondary row travelling wheel 5-2 be evenly distributed on centered by centralized positioning assembly 4 below panoramic table 2, positive transport wheel 5-1 and secondary row travelling wheel 5-2 is respectively equipped with two groups, two groups of positive transport wheel 5-1 are symmetrical with the axis centre of panoramic table 2, and two groups of secondary row travelling wheel 5-2 and positive transport wheel 5-1 interval are arranged.
The structure of described precise positioning mechanism 6 comprises: be arranged on the detection module that puts in place between panoramic table 2 and base 3, locating slot 6-2, locating dowel 6-1 with driving mechanism, locating dowel 6-1 is positioned in locating slot 6-2 notched areas by putting in place at the beginning of detection module, and forms automatic adjustment detent mechanism by the rotary freedom of panoramic table 2 and supporting driving mechanism and locating slot 6-2; The described detection module that puts in place is displacement transducer, and locating slot 6-2 is V-type locating slot, and the end of locating dowel 6-1 arranges needle bearing 6-8 and forms needle-type guider.
Described locating slot 6-2 locates on the base 3, and locating dowel 6-1 is positioned on panoramic table 2 or locating slot 6-2 is positioned on panoramic table 2, and locating dowel 6-1 location on the base 3.
The structure of the driving mechanism of described locating dowel 6-1 comprises: locating dowel 6-1 is positioned at the axle 6-3 on panoramic table 2 or base 3, is positioned at cylinder block 6-5, piston rod 6-6 on panoramic table 2 and transmission two connecting rod by turning cylinder 6-4, end and transmission two connecting rod of piston rod 6-6 are fixed, and the transmission two connecting rod other end is fixed on axle 6-3, forms transmission mechanism axle 6-3 being transmitted to turning moment; The structure of above-mentioned transmission two connecting rod comprises the first drive link 6-7 be fixed on axle 6-3, is fixed on the second drive link 6-9 of piston rod 6-6 end, the first drive link 6-7 and the second drive link 6-9 end hinged formation two bar linkage structure; Described first drive link 6-7 is that integral type is fixedly connected with locating dowel 6-1.
Described base 3 upper surface is provided with circular guideway, and distributed-power transmission mechanism 5 is arranged in circular guideway.
The locate mode of described bearing and gyroaxis 4-3 is: gyroaxis 4-3 outer wall is provided with positioning table, it is spacing that gyroaxis 4-3 realizes top through the inner ring 4-7 of bearing by positioning table, bottom gyroaxis 4-3, be provided with screw thread, and realize the location, bottom of bearing by matching nut 4-5.
A type frame slewing equipment has two main technique actions.First being revolution action, is secondly positioning process action.Realize revolution and two, location precision be all very high and structure is simple, cheap, maintenance and debugging easily scheme be a very very difficult thing.A type frame slewing equipment in the present invention is primarily of A type frame 1, panoramic table 2, base 3, centralized positioning assembly 4, distributed-power transmission mechanism 5 and precise positioning mechanism 6, distributed-power transmission mechanism 5 is divided into again the secondary row travelling wheel 5-2 of positive transport wheel 5-1 with motor reducer 5-3 and not speed reducer with motor, adopts distributed-power transmission plan positive transport wheel 5-1 to be arranged in 180 ° of directions below panoramic table 2; Secondary row travelling wheel 5-2 is arranged in 180 ° of directions below panoramic table 2, and the phase difference of each secondary row travelling wheel 5-2 and positive transport wheel 5-1 is 90 °, and secondary row travelling wheel 5-2 contacts with the circular guideway on base 3 with positive transport wheel 5-1.They, centered by rotation of rotary table parts 4, move in a circle along guide pass.Rotating accuracy positions control by the precise positioning mechanism 6 between panoramic table 2 and base, and therefore the present invention has point-device gyration positioning precision.Foozle ≯ 0.02 of its numerical control machining center.
The installing hole of the cylinder on panoramic table 2 is machined by machining center one-time positioning, and therefore its precision is very high, error ≯ 0.03; On base 3 the installing hole of locating slot also machined by machining center one-time positioning, its machining accuracy is also very high, error ≯ 0.03.Such panoramic table 2 is connected as a whole with base 3 by locating dowel, have very high positional precision, its coaxiality error ≯ 0.05, and angle error is about 1/25 °, ensure that revolution positioning precision.
Panoramic table is counterclockwise or in clockwise turning course, when the detection module that puts in place is triggered, motor reducer reduces speed now; When stop put in place detection module be triggered time, motor reducer stop.Now cylinder positioning element is in V-type locating notch locating area, and error can by the position control of adjustment sensor within 2 millimeters.Locating dowel on keeper is rolled to the center of V-type locating slot under cylinder action along the inclined-plane of V-type locating slot, thus realizes accurately location.When being arranged on the excess of stroke sensor in slewing equipment and being triggered, now keeper is far beyond the notched areas of V-type locating slot, at this moment device powers down, no longer positions action, is not damaged with proterctive equipment.
The present invention uses classification calibration precision positioning technology, because panoramic table force of sliding friction is in orbit far smaller than the location pulling force of detent mechanism, and the distance of sliding is generally less than 2 millimeters, and locate executive item, namely locating dowel is the in-built needle bearing of periphery, during location, locating dowel is rolled on the inclined-plane of V-type locating slot, effectively reduces positioning resistance.During debugging, sensor Primary Location error can be controlled in 1 millimeter usually at the scene, and therefore the present invention is by position sensor coarse regulation position location, more accurately locates with V-type keeper, realizes classification calibration precision positioning technology.
When the guide pass on positive transport wheel and secondary row travelling wheel and base 1 produces wearing and tearing, the gap that the wearing and tearing of automatic wear compensation type centre of gyration meeting auto-compensation produce.Referring to Fig. 3, can the center positioning mechanism of panoramic table be used as, and can realize road wheel due to and guide pass between wearing and tearing carry out in real time effective compensation automatically, maximum compensation rate 1.5 ~ 5 millimeters, concrete compensation rate can set as required.When supporting road wheel and guide pass wearing and tearing, under the effect of the load on table top, gyroaxis carries out fine motion adjustment downwards along load direction, and drives in swivel sleeve two bearings to move down.The outer shroud fit tolerance of swivel sleeve and bearing is the matched in clearance of G level tolerance range, can ensure to move down along load direction in the outer ring of a fixed load effect lower bearing.The inner and outer ring of upper and lower two cover bearings is all equipped with inner ring spacer and outer ring spacer; so two bearings move down together under the effect of inside and outside circle spacer; and then bearing gland under the action of the spring can simultaneously by bearing gland downwards with guide-localization post for benchmark carries out fine setting downwards again to adapt to the change in size after wearing and tearing; and then effectively protect bearing and do not damage because load axial load is excessive; there is provided again simultaneously and turn round positioning precision accurately, thus ensure that the performance of panoramic table complete machine reaches instructions for use.
The present invention is lower than the cost of like product by about 50%, positioning precision and rotating accuracy all higher than above-mentioned two kinds of panoramic tables, have compact conformation simple, easy to maintenance, debug the advantages such as easy.