CA1156045A - Annular trough-shaped, vibrating abrasion treatment apparatus - Google Patents
Annular trough-shaped, vibrating abrasion treatment apparatusInfo
- Publication number
- CA1156045A CA1156045A CA000364731A CA364731A CA1156045A CA 1156045 A CA1156045 A CA 1156045A CA 000364731 A CA000364731 A CA 000364731A CA 364731 A CA364731 A CA 364731A CA 1156045 A CA1156045 A CA 1156045A
- Authority
- CA
- Canada
- Prior art keywords
- container
- section
- channel
- lateral walls
- trough
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- 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
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/06—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving oscillating or vibrating containers
- B24B31/073—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving oscillating or vibrating containers involving a bowl being ring- or spiral-shaped
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Crushing And Grinding (AREA)
- Combined Means For Separation Of Solids (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Physical Water Treatments (AREA)
- Basic Packing Technique (AREA)
Abstract
ABSTRACT
Apparatus for surface-abrasion treatment of workpieces includes an annular, trough-shaped, vibrating scouring container, resiliently mounted upon a machine-frame, Vibration generating means include a shaft arranged vertical-ly in the machine frame and co-axial to the container, Eccentric weights are carried by the shaft which is rotated to produce vibrations which are transmit-ted to the container. The container defines a trough having opposed upwardly directed lateral walls and being adapted to convey the contents of the contain-er in a spiral path along the trough as a result of oscillating movement pro-duced by the vibrations. The trough having a bottom which is in a plane lying at an acute angle (20°) to the horizontal so that the trough has a lowermost part that lies diametrically opposite the uppermost part and is separated therefrom by uniformly inclined ascending and descending trough sections in each of which the workpieces are subjected to surface abrasion treatment during operation of the apparatus.
Apparatus for surface-abrasion treatment of workpieces includes an annular, trough-shaped, vibrating scouring container, resiliently mounted upon a machine-frame, Vibration generating means include a shaft arranged vertical-ly in the machine frame and co-axial to the container, Eccentric weights are carried by the shaft which is rotated to produce vibrations which are transmit-ted to the container. The container defines a trough having opposed upwardly directed lateral walls and being adapted to convey the contents of the contain-er in a spiral path along the trough as a result of oscillating movement pro-duced by the vibrations. The trough having a bottom which is in a plane lying at an acute angle (20°) to the horizontal so that the trough has a lowermost part that lies diametrically opposite the uppermost part and is separated therefrom by uniformly inclined ascending and descending trough sections in each of which the workpieces are subjected to surface abrasion treatment during operation of the apparatus.
Description
0 ~ ~
The inven-tion relabes to an almular, trough-shaped, vibrating scouring or surface abrasion treat~ent apparatus.
Vibrating scouring containers are known (German OS 19 57 547) in which the oontainer bottan is in the form of a spiral or helix. The sunnit of the con-tainer is connected to the lowe~nos-t part thereof by a falling stage or step.
Workpieces to be processed are conveyed upwardly to the summit of the container, whence they Eall to the lowennost part thereof~ A d;rop of this kind, however, may cause dc~nage, especially if -the workpieces are fragile. This falling step al~o limlts the output from the machine.
In other designs (French Patent 72 11 211), the contamer and the vibration generator are adapted to ~e tilted to accelerate emptying through an aperture arranged after the falling stage. me unit ccmnot operate :in this tilted position however since, because the vibration generator is cilso tilted, there would be no spiral circulation of the workpie oe s. Furthermore, the falling stage produ oes the problems mentioned above.
In still other containers (Swiss Patent 492 518), upward conveying is carried out in a plurality of individual arcuate sections. A linear horizontal section is located between each two arcuate sections. After the last arcuate section, a crest is formed, after which the bottom of the channel again follows a descending path and opens into the lowermost part of the container. Since the workpieces are conveyed upwardly, if possible to a very much higher level, the path of descent because of its steepness, is equivalent to a falling step. Thus -the workpieces slide down ancl no surface processing takes place.
In contrast to ~he ~oregoing, it is the purpose of the invention -to de-sl~n an annular, trough-shaped, vibrating scouring container which is simple to produoq and ~ore convenient-to use, in such a nanner that -the grindin~ or abrasion operation takes place also in the descending channel-sec-tion.
The invention provides in an annular trough-shaped vibrating abrasive container mounted upon springs of a machine frame, comprising upwardly directed lateral walls and an arcuate sec-tion ascending in a downstream direction in which the conten-ts o~ the container are conveyed, on which -the contents, as a result of oscillating movement produced by centrifugal weights rotating about a vertical axis, are able to move along a spiral path from a por-tion constituting a lowermost beginning of the container to an uppermost apex of the con-tainer and from there over a gradient section to the lowermost beginning of the container, ~he improve-ment wherein the arcuate section and the gradient section define an operative bottom of the container, the bottom of the container defines a track-line which runs in one plane oriented at an acute angle of inclination relative to the horizontal, and the lowermost beginning of the container lies diametrically opposite the upper-most apex of the container.
This configuration provides a container or trough of the type in ~uestion with increased serviceability. There is no longer a falling stage between the summit and the lowermost part and this permits gentle processing of the workpieces. The long, continuously inclined configuration of the remainder of the con-tainer bot-tom is such that circulation and processing takes place as the container con-tent i~ loosened up. ~t was found that thlq ~hoxtens surface-proce#sing -times.
The shape o~ the annular, trough-shaped container in plan view may var~ ~or example i-t may be circular, oval, egg-~haped or square. q'he con~ain-1 1 560~5 er b~ttcm al~ays consists of an ascending section and a descending section of approximately the same length. ~ndling is also improved. The track-line of the bottom lies in one pkane and this is at an acute angle to the horizontal. How-ever, the axis of the vibration generator is still verticall thus producing satisfactory spiral circulation. The container-bottom has no protuberances, and this also facilitates production. Optimal processing results are obtained when the slope of the plane is about 20 .
Additional advantages and details of the inventivn may be ga-thered from the follc~ing description of four em~odiiments -thereof in conjunction with the ~rawings attached hereto, wherein:
Figure 1 is a side elevation of a vibrating scouring container having a circular form in plan, mounted upon the sub-frame of a machine;
Figure 2 is a plan view of the vibrating scouring container with the disch æ ging and separating devi oe in the discharge position;
Figure 3 is a diagrammatical representation of a development of the vibrating scouring container, with the discharging and separating device in opera-tion;
Figure 4 is a view corresponding to that in E'igure 2, but with the dis-charging and separating devi oe irloperative;
Figure 5 shcws a development corresponding to Figure 4;
Figure 6 is a plan view of the vibrating soouring contairler according to a s~cond el~bodiment, having a tangential discharge-slide;
Figure 7 shcws a clevelopmient of -the vibrating scouring container of FicJure G, wi~h -the discharge-slide arranged tangentially;
Figure a is a view of a vibrating scouring container, mounted upon thq sub-fram~ o~ a machine according to ~nother embodi~ienti Figure ~ is a plan ~iew of the vibra-ting sc~uring conta-lner o~
l 15~0~5 ~-igure 8 with thc flap in the discharge position;
FiguIe 10 ill~Jstrates, in diagrammatical form, a detail of the de-vclopnlent ot` the vibra~ing scouring container of Figures 8 and 9, in the upper-most area, with the flap se-t to the discharge posit:lon;
Figure 11 is a cross-section of the container of Figure 10, through the container channel immediately in front of the flap;
Figure 12 is a view of a vibrating scouring container according to a further embodiment;
Figure 13 is a plan view of this vibrating scouring container of Pigure 12;
Figures 14 and 15 show the same design as in Figure 8, but with an annular bead projecting into the channel-area.
The vibrating scouring or surface abrasion machine comprises a sub-frame 1, of circular outline in plan vie~l, with a drive-motor 2 secured to its periphery. Centrifugal eccentric weight masses 4J5, in the form of segmental discs, are driven in rotation through a belt 3.
Machine sub-frame 1 has an upper surface 6 inclined at an acute an-gle to the horizontal and carrying support pads 7 in equal angular distribution.
B Compression springs 8, of approximately equal length, are mounted between the pads 7 and similar support pads 10 on the container ~E~Ug~}9, and carry the container.
Container 9 is of circular outline in plan view. The line S of the container-bottom 11 lies in a plane arranged at an acu-te angle alpha amounting to ~bo-lt 20~. This plane :is there-for~ also a-t an acute angle to the axi.s of the shaet carrying the centri-fLIgal weights 4,5.
Th~ container d~f-ines a channel of U-shaped cross-section, The h~ight of the lateral walls 12 of -tho channel ill its lowermost area ~xtends 13L5~0~$
above the level of tlle track line S in the upperlllost area. This is shown by the horizontal line L in ~igure 1.
As a result of this design, the container oottom has a section 11' that ascends from the container bottom part B to the container summit part B', and a section 11" that runs from the summit part ~ to -the bottom part B. ~ince the track line S is in one plane, the ascencling and descending angles are equal.
The eccentric-weights ~,5 cause the container contents to circulate spirally and to ascend from the bottom part B ko the summit part B' in the direction of the arrow y. ~lowever, the descending section of the container also acts as a processing section in this circulation.
A discharge aperture 13 is provided in the lowermost area.
B In the vicinity of the bottom part B the container troug~ 9 is equipped, in the area of the descending section 11", with a discharge-spout 13 arranged as a secant. Associated with this spout is a discharging and sepa-rating device 14 in the form of a horizontal ring segment, concentric with the centre M of the container displaceable arcuately in the direction of summit B'.
The segment comprises a separating screen 15 havin~ a ramp 16 directed towards the summit part B'. The other end of the screen forms a vertical end-wall 17 between the irmer and outer walls of the container trough.
If the contents of the container, consisting of processing elements 1~ and workpieces 19, are passed around the container trough more ~han once during processingl thq screen lS :is retractqd to the position shown in Pi~ures ~ and S. This results in the con~ainer conten~s being conveyed upwardly in the arqa of ascending bottom sec~ion 11', and upon reaching the summit part B', passing down the processing section 11" which (lescends continuously to the lowermost part B, thc contcnts at the same ~imq being vibrated. Figure S shows 1 15~04~
that the cont.lirler conterl~s pass ullder the sepclrating screen~ Figure 5 also SilOws that depth ot' the spiral oE contailler-contents is at maxi~al thickness in thc bottom l)art B.
Whcn the workpieces 19 are to be discharged after surface-processing, tlle separating screen 15 is shiEted to the position shown in Figures 2 and 3.
This may be achieved mallually or by means of a moto:r. ]n this connection, the end 16 of separating screen 15 facing conveying-direction _ engages channel-bottom 11 just downstream oE the uppermost part B' ~ see Pigure 3. In this setting, the end-w111 17 of thc separating screen 15 forms an extension of the lateral wall 13' of the discharge-spout 13. 'I'he COTItentS of the container therefore are delivered onto the separating screen 15. Processing elements 18 pass through the screen while the workpieces 19 are retained on ~he screen and discharged.
In the embodiment illustrated in Figures 6 and 7, the discharge-spout 20 is arranged tangentially, extending above the descending sec~ion 11" of the container bottom. Spout 20 carries a sliding discharge device 21 in the form of a separating screen 22. In the discharging position, shown in Pigure 6 the end 23, which is in the form of a ramp facing the conveying-direction y, seats upon the channel-bottom 11 shortly after uppermost part B'. 'I`he screen 22 is also equipped with a vertical wall 24 which, in the discharging position, is an extension of the shorter lateral wall 20' of the discharge-spout 20. When the dischargc~s1itle ~1 is opcrative, separation takes place between the work-pieces 19 and the proc~ssing elements 18.
le thc container-colltonts arc to circulate continuous]y, the dis-charge-slide i5 withdrawn, a$ indiGa-ted in Pigures 6 and 7 in dotted lines.
According to anotller variant, not shown, the separating screen is inser-ted froln above into the container, instead of` being displaceable horizon-1 1560~
tally with r~spect to the cent~e of thc container.
Lt will bc se~n that th~ upper cccen~ric weigh~ 4 is located in theinterior of the contailler 9, while the lower centri.fugal weight 5 is located in the upper part of thc machine sub-frame 1.
In the e~lbodiment of Figur~ 8, the cross-sectionally U-shaped con-tainer channel is such that the height of the channel, in the lowermost part B of the transversely arched container-bottom 11, is approximately twice that in uppermost part B' of the container. In this co~mection, the height of the channel in uppermost part B' corresponds approximately to the width of the channel, cf. Figure 8.
The lateral walls 12', 12" extending upwards from the container-bottom 11, are such that they extend, in the lowermost area, approximately as far as the upper edge of the lateral walls provided in the uppermost area of the container. Thus the upper edge of the container is arranged in a horizon-tal plane. Moreover, the lateral walls 12', 12" of container 9 are parallel with each other and vertical.
Since track-line S runs at an angle to the hori~ontal H and in one plane, this container also has a bottom-section 11' ascending from Lowermost container part B to uppermost container part B', and a descending section 11"
descending from uppermost part B' to lowermost part B. The angles of ascent and descent are equal.
Immediately after uppermost part B', i.e. in the descending bottom section 11", the container channel has a straight section 32 of a somewhat expanded crcs3YsecYtion. I.ocated in this straight section 32 is a ~lap 33, the qnd section 34 of which faces the direction in which the çontainer conten-ts are conveyed and matches the section 32 in accordance with thq curvature of -the bottom of the container channel. Ln this connection, the ed~e of the encl section 34 is arranged as a seç-1 ~ 560d~
cant to the circular shape of the container, cf. Figure 9. Arched surface 35, extending fr~n the end-section 34, merges into a plane 36 imnediately before the horizontal axis of flap 33. 'rhe axis of the flap, adjacent the plane 36, is in the form of a film~hinge-zone 37, the Elap being secured, on the other side of the zone 37, to a transverse web 38 in the channel of ~he contair~r. Both the transverse web 38 and film-hinge-zorle 37 are arranged as secants to the circular outline of the container.
In the discharge setting (Figure 10) the bottan surface of flap 33 is inclined. ~rhe transverse arching of the flap continues in upwardly directed lateral walls 39 which, when the flap is in the discharge position, terminate on a level with the upper edge of the container 9. In the vicinity of the end-section 34, lateral walls 39 are extended in the form of webs 39' projecting be-yond the container 9 and connected together by a yoke 39" with which a flap-actuating device (not shown) may engage.
Adjacent the flap 33 and the transverse web 38, is a discharge section 40 arranged as a secant in relation to the circular configuration of the container, the section term m ating in a discharge spout 13. Located in the discharge section 40, o~ a level with transverse web 38, is a separating screen 15. Eoth the screen and the section 40 run at an obtuse angle to the straight section 32 that accom~
mcdates the flap 33.
If the contents of the container are to pass r.epeatedly therethrough in processing the workpie oe s, the flap 33 is pivoted to the position shcwn in dotted line~ in Figure 1~. F4r di~h~rge, the flap 33 is m~ved in the dcwnward~ direc-tlon~ whereupon the arched end~ction 3~ seats on ~h~ bo-ttom-sur~ace of the chann~ hus the con~ents o~-the contalner axriving from the uppcrmost part B' o~ contaln~r ~oktQm 11 run up on~o-~h3 fla~ 33, where they advance spirally ov~r a certain dis-tance, cmd are then pa.ssed to the ~epara-tirlg sareen 15. The prw ess-0 ~ ~
ing elements pass throu(Jh the screen~ whereas the workpieces are retained and cl:ischaryed.
As illustrated by the axraws in Fic3ure 8, the height of the spiral inthe lc~ermost E~lrt B is about twice that m the uppermost part B'. Thus, during processing, the circulating contents attain, in uppenmost part s', a higher velocity with si ~ltaneous loosening-up. In other words, the pitch of the spiral increases in the uppermost part B'. The continuous change in the eross-section of the spiral varies the pressure and veloeity acting on the container-contents, and this increases the sE~ed of processing.
In the container 41 accorcling -to Figures 12 and 13, the width of the channel in the lawe s-t part B is greater than in uppe st part B'l the ratio in this case being about 2:1. In Figure 12, the cross-sectional shape of the charge or spiral in these areas is indicatecl in dotted lines.
In this design there is a ccntinuous deerease in width frcm lewermDst part B to uppe st part B'. This shape is achieved by the outer walls 42, 43 of the channel being in the form of circles over almost their entire peripheral length with centres M and M' off-set in relation to eaeh other.
A straight seetion 32 following the uppe st part B serves to aceom-modate a flap 33 and is followed by a discharge-section 40', also arranged as a seeant in relation to the eircular shape of the eontainer 41.
In this design, -the lateral walls 42, 43 of the ehannel are arranged entirely vertieally.
In the design illustrated in Figure~ 14 and 151 which largely resemhles that shown in Fi~ure 8, ~imilar parts bear -the same referenee nuneral~. In con-krast to ~he d~slgn illustrated :in ~i~ure 8, -the internal s,urface o~ the outer wal] 12' of the channel earrie~ an annular bead 44 projeeting in the vieinit~ oE
the upper edge into the interior Qf-the channel, in an approxlm~te-_ g 1~560~
ly horizontal plane. Thc bea(l is o~ tr:iangular cross-section and is formed by a thickcning container lining 45 which is made of rubber or o a suitable synthctic material.
-- :10 -
The inven-tion relabes to an almular, trough-shaped, vibrating scouring or surface abrasion treat~ent apparatus.
Vibrating scouring containers are known (German OS 19 57 547) in which the oontainer bottan is in the form of a spiral or helix. The sunnit of the con-tainer is connected to the lowe~nos-t part thereof by a falling stage or step.
Workpieces to be processed are conveyed upwardly to the summit of the container, whence they Eall to the lowennost part thereof~ A d;rop of this kind, however, may cause dc~nage, especially if -the workpieces are fragile. This falling step al~o limlts the output from the machine.
In other designs (French Patent 72 11 211), the contamer and the vibration generator are adapted to ~e tilted to accelerate emptying through an aperture arranged after the falling stage. me unit ccmnot operate :in this tilted position however since, because the vibration generator is cilso tilted, there would be no spiral circulation of the workpie oe s. Furthermore, the falling stage produ oes the problems mentioned above.
In still other containers (Swiss Patent 492 518), upward conveying is carried out in a plurality of individual arcuate sections. A linear horizontal section is located between each two arcuate sections. After the last arcuate section, a crest is formed, after which the bottom of the channel again follows a descending path and opens into the lowermost part of the container. Since the workpieces are conveyed upwardly, if possible to a very much higher level, the path of descent because of its steepness, is equivalent to a falling step. Thus -the workpieces slide down ancl no surface processing takes place.
In contrast to ~he ~oregoing, it is the purpose of the invention -to de-sl~n an annular, trough-shaped, vibrating scouring container which is simple to produoq and ~ore convenient-to use, in such a nanner that -the grindin~ or abrasion operation takes place also in the descending channel-sec-tion.
The invention provides in an annular trough-shaped vibrating abrasive container mounted upon springs of a machine frame, comprising upwardly directed lateral walls and an arcuate sec-tion ascending in a downstream direction in which the conten-ts o~ the container are conveyed, on which -the contents, as a result of oscillating movement produced by centrifugal weights rotating about a vertical axis, are able to move along a spiral path from a por-tion constituting a lowermost beginning of the container to an uppermost apex of the con-tainer and from there over a gradient section to the lowermost beginning of the container, ~he improve-ment wherein the arcuate section and the gradient section define an operative bottom of the container, the bottom of the container defines a track-line which runs in one plane oriented at an acute angle of inclination relative to the horizontal, and the lowermost beginning of the container lies diametrically opposite the upper-most apex of the container.
This configuration provides a container or trough of the type in ~uestion with increased serviceability. There is no longer a falling stage between the summit and the lowermost part and this permits gentle processing of the workpieces. The long, continuously inclined configuration of the remainder of the con-tainer bot-tom is such that circulation and processing takes place as the container con-tent i~ loosened up. ~t was found that thlq ~hoxtens surface-proce#sing -times.
The shape o~ the annular, trough-shaped container in plan view may var~ ~or example i-t may be circular, oval, egg-~haped or square. q'he con~ain-1 1 560~5 er b~ttcm al~ays consists of an ascending section and a descending section of approximately the same length. ~ndling is also improved. The track-line of the bottom lies in one pkane and this is at an acute angle to the horizontal. How-ever, the axis of the vibration generator is still verticall thus producing satisfactory spiral circulation. The container-bottom has no protuberances, and this also facilitates production. Optimal processing results are obtained when the slope of the plane is about 20 .
Additional advantages and details of the inventivn may be ga-thered from the follc~ing description of four em~odiiments -thereof in conjunction with the ~rawings attached hereto, wherein:
Figure 1 is a side elevation of a vibrating scouring container having a circular form in plan, mounted upon the sub-frame of a machine;
Figure 2 is a plan view of the vibrating scouring container with the disch æ ging and separating devi oe in the discharge position;
Figure 3 is a diagrammatical representation of a development of the vibrating scouring container, with the discharging and separating device in opera-tion;
Figure 4 is a view corresponding to that in E'igure 2, but with the dis-charging and separating devi oe irloperative;
Figure 5 shcws a development corresponding to Figure 4;
Figure 6 is a plan view of the vibrating soouring contairler according to a s~cond el~bodiment, having a tangential discharge-slide;
Figure 7 shcws a clevelopmient of -the vibrating scouring container of FicJure G, wi~h -the discharge-slide arranged tangentially;
Figure a is a view of a vibrating scouring container, mounted upon thq sub-fram~ o~ a machine according to ~nother embodi~ienti Figure ~ is a plan ~iew of the vibra-ting sc~uring conta-lner o~
l 15~0~5 ~-igure 8 with thc flap in the discharge position;
FiguIe 10 ill~Jstrates, in diagrammatical form, a detail of the de-vclopnlent ot` the vibra~ing scouring container of Figures 8 and 9, in the upper-most area, with the flap se-t to the discharge posit:lon;
Figure 11 is a cross-section of the container of Figure 10, through the container channel immediately in front of the flap;
Figure 12 is a view of a vibrating scouring container according to a further embodiment;
Figure 13 is a plan view of this vibrating scouring container of Pigure 12;
Figures 14 and 15 show the same design as in Figure 8, but with an annular bead projecting into the channel-area.
The vibrating scouring or surface abrasion machine comprises a sub-frame 1, of circular outline in plan vie~l, with a drive-motor 2 secured to its periphery. Centrifugal eccentric weight masses 4J5, in the form of segmental discs, are driven in rotation through a belt 3.
Machine sub-frame 1 has an upper surface 6 inclined at an acute an-gle to the horizontal and carrying support pads 7 in equal angular distribution.
B Compression springs 8, of approximately equal length, are mounted between the pads 7 and similar support pads 10 on the container ~E~Ug~}9, and carry the container.
Container 9 is of circular outline in plan view. The line S of the container-bottom 11 lies in a plane arranged at an acu-te angle alpha amounting to ~bo-lt 20~. This plane :is there-for~ also a-t an acute angle to the axi.s of the shaet carrying the centri-fLIgal weights 4,5.
Th~ container d~f-ines a channel of U-shaped cross-section, The h~ight of the lateral walls 12 of -tho channel ill its lowermost area ~xtends 13L5~0~$
above the level of tlle track line S in the upperlllost area. This is shown by the horizontal line L in ~igure 1.
As a result of this design, the container oottom has a section 11' that ascends from the container bottom part B to the container summit part B', and a section 11" that runs from the summit part ~ to -the bottom part B. ~ince the track line S is in one plane, the ascencling and descending angles are equal.
The eccentric-weights ~,5 cause the container contents to circulate spirally and to ascend from the bottom part B ko the summit part B' in the direction of the arrow y. ~lowever, the descending section of the container also acts as a processing section in this circulation.
A discharge aperture 13 is provided in the lowermost area.
B In the vicinity of the bottom part B the container troug~ 9 is equipped, in the area of the descending section 11", with a discharge-spout 13 arranged as a secant. Associated with this spout is a discharging and sepa-rating device 14 in the form of a horizontal ring segment, concentric with the centre M of the container displaceable arcuately in the direction of summit B'.
The segment comprises a separating screen 15 havin~ a ramp 16 directed towards the summit part B'. The other end of the screen forms a vertical end-wall 17 between the irmer and outer walls of the container trough.
If the contents of the container, consisting of processing elements 1~ and workpieces 19, are passed around the container trough more ~han once during processingl thq screen lS :is retractqd to the position shown in Pi~ures ~ and S. This results in the con~ainer conten~s being conveyed upwardly in the arqa of ascending bottom sec~ion 11', and upon reaching the summit part B', passing down the processing section 11" which (lescends continuously to the lowermost part B, thc contcnts at the same ~imq being vibrated. Figure S shows 1 15~04~
that the cont.lirler conterl~s pass ullder the sepclrating screen~ Figure 5 also SilOws that depth ot' the spiral oE contailler-contents is at maxi~al thickness in thc bottom l)art B.
Whcn the workpieces 19 are to be discharged after surface-processing, tlle separating screen 15 is shiEted to the position shown in Figures 2 and 3.
This may be achieved mallually or by means of a moto:r. ]n this connection, the end 16 of separating screen 15 facing conveying-direction _ engages channel-bottom 11 just downstream oE the uppermost part B' ~ see Pigure 3. In this setting, the end-w111 17 of thc separating screen 15 forms an extension of the lateral wall 13' of the discharge-spout 13. 'I'he COTItentS of the container therefore are delivered onto the separating screen 15. Processing elements 18 pass through the screen while the workpieces 19 are retained on ~he screen and discharged.
In the embodiment illustrated in Figures 6 and 7, the discharge-spout 20 is arranged tangentially, extending above the descending sec~ion 11" of the container bottom. Spout 20 carries a sliding discharge device 21 in the form of a separating screen 22. In the discharging position, shown in Pigure 6 the end 23, which is in the form of a ramp facing the conveying-direction y, seats upon the channel-bottom 11 shortly after uppermost part B'. 'I`he screen 22 is also equipped with a vertical wall 24 which, in the discharging position, is an extension of the shorter lateral wall 20' of the discharge-spout 20. When the dischargc~s1itle ~1 is opcrative, separation takes place between the work-pieces 19 and the proc~ssing elements 18.
le thc container-colltonts arc to circulate continuous]y, the dis-charge-slide i5 withdrawn, a$ indiGa-ted in Pigures 6 and 7 in dotted lines.
According to anotller variant, not shown, the separating screen is inser-ted froln above into the container, instead of` being displaceable horizon-1 1560~
tally with r~spect to the cent~e of thc container.
Lt will bc se~n that th~ upper cccen~ric weigh~ 4 is located in theinterior of the contailler 9, while the lower centri.fugal weight 5 is located in the upper part of thc machine sub-frame 1.
In the e~lbodiment of Figur~ 8, the cross-sectionally U-shaped con-tainer channel is such that the height of the channel, in the lowermost part B of the transversely arched container-bottom 11, is approximately twice that in uppermost part B' of the container. In this co~mection, the height of the channel in uppermost part B' corresponds approximately to the width of the channel, cf. Figure 8.
The lateral walls 12', 12" extending upwards from the container-bottom 11, are such that they extend, in the lowermost area, approximately as far as the upper edge of the lateral walls provided in the uppermost area of the container. Thus the upper edge of the container is arranged in a horizon-tal plane. Moreover, the lateral walls 12', 12" of container 9 are parallel with each other and vertical.
Since track-line S runs at an angle to the hori~ontal H and in one plane, this container also has a bottom-section 11' ascending from Lowermost container part B to uppermost container part B', and a descending section 11"
descending from uppermost part B' to lowermost part B. The angles of ascent and descent are equal.
Immediately after uppermost part B', i.e. in the descending bottom section 11", the container channel has a straight section 32 of a somewhat expanded crcs3YsecYtion. I.ocated in this straight section 32 is a ~lap 33, the qnd section 34 of which faces the direction in which the çontainer conten-ts are conveyed and matches the section 32 in accordance with thq curvature of -the bottom of the container channel. Ln this connection, the ed~e of the encl section 34 is arranged as a seç-1 ~ 560d~
cant to the circular shape of the container, cf. Figure 9. Arched surface 35, extending fr~n the end-section 34, merges into a plane 36 imnediately before the horizontal axis of flap 33. 'rhe axis of the flap, adjacent the plane 36, is in the form of a film~hinge-zone 37, the Elap being secured, on the other side of the zone 37, to a transverse web 38 in the channel of ~he contair~r. Both the transverse web 38 and film-hinge-zorle 37 are arranged as secants to the circular outline of the container.
In the discharge setting (Figure 10) the bottan surface of flap 33 is inclined. ~rhe transverse arching of the flap continues in upwardly directed lateral walls 39 which, when the flap is in the discharge position, terminate on a level with the upper edge of the container 9. In the vicinity of the end-section 34, lateral walls 39 are extended in the form of webs 39' projecting be-yond the container 9 and connected together by a yoke 39" with which a flap-actuating device (not shown) may engage.
Adjacent the flap 33 and the transverse web 38, is a discharge section 40 arranged as a secant in relation to the circular configuration of the container, the section term m ating in a discharge spout 13. Located in the discharge section 40, o~ a level with transverse web 38, is a separating screen 15. Eoth the screen and the section 40 run at an obtuse angle to the straight section 32 that accom~
mcdates the flap 33.
If the contents of the container are to pass r.epeatedly therethrough in processing the workpie oe s, the flap 33 is pivoted to the position shcwn in dotted line~ in Figure 1~. F4r di~h~rge, the flap 33 is m~ved in the dcwnward~ direc-tlon~ whereupon the arched end~ction 3~ seats on ~h~ bo-ttom-sur~ace of the chann~ hus the con~ents o~-the contalner axriving from the uppcrmost part B' o~ contaln~r ~oktQm 11 run up on~o-~h3 fla~ 33, where they advance spirally ov~r a certain dis-tance, cmd are then pa.ssed to the ~epara-tirlg sareen 15. The prw ess-0 ~ ~
ing elements pass throu(Jh the screen~ whereas the workpieces are retained and cl:ischaryed.
As illustrated by the axraws in Fic3ure 8, the height of the spiral inthe lc~ermost E~lrt B is about twice that m the uppermost part B'. Thus, during processing, the circulating contents attain, in uppenmost part s', a higher velocity with si ~ltaneous loosening-up. In other words, the pitch of the spiral increases in the uppermost part B'. The continuous change in the eross-section of the spiral varies the pressure and veloeity acting on the container-contents, and this increases the sE~ed of processing.
In the container 41 accorcling -to Figures 12 and 13, the width of the channel in the lawe s-t part B is greater than in uppe st part B'l the ratio in this case being about 2:1. In Figure 12, the cross-sectional shape of the charge or spiral in these areas is indicatecl in dotted lines.
In this design there is a ccntinuous deerease in width frcm lewermDst part B to uppe st part B'. This shape is achieved by the outer walls 42, 43 of the channel being in the form of circles over almost their entire peripheral length with centres M and M' off-set in relation to eaeh other.
A straight seetion 32 following the uppe st part B serves to aceom-modate a flap 33 and is followed by a discharge-section 40', also arranged as a seeant in relation to the eircular shape of the eontainer 41.
In this design, -the lateral walls 42, 43 of the ehannel are arranged entirely vertieally.
In the design illustrated in Figure~ 14 and 151 which largely resemhles that shown in Fi~ure 8, ~imilar parts bear -the same referenee nuneral~. In con-krast to ~he d~slgn illustrated :in ~i~ure 8, -the internal s,urface o~ the outer wal] 12' of the channel earrie~ an annular bead 44 projeeting in the vieinit~ oE
the upper edge into the interior Qf-the channel, in an approxlm~te-_ g 1~560~
ly horizontal plane. Thc bea(l is o~ tr:iangular cross-section and is formed by a thickcning container lining 45 which is made of rubber or o a suitable synthctic material.
-- :10 -
Claims (10)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In an annular trough-shaped vibrating abrasive container mounted upon springs of a machine frame, comprising upwardly directed lateral walls and an arcuate section ascending in a downstream direction in which the contents of the container are conveyed, on which the contents, as a result of oscillating movement produced by centrifugal weights rotating about a vertical axis, are able to move along a spiral path from a portion constituting a lowermost beginning of the container to an uppermost apex of the container and from there over a gradient section to the lowermost beginning of the container, the improvement wherein the arcuate section and the gradient section define an operative bottom of the container, the bottom of the container defines a track-line which runs in one plane oriented at an acute angle of inclination relative to the horizontal, and the lowermost beginning of the container lies diametrically opposite the uppermost apex of the container.
2. The vibrating abrasive container according to claim 1, wherein said angle of inclination is substantially 20 degrees, and said lateral walls define an upper edge and adjacent the lowermost beginning of said container said lateral walls project upwardly and extend approximately to the level of the upper edge of said lateral walls adjacent the uppermost apex of the container.
3. The vibrating abrasive container according to claim 1, wherein the lateral walls and said bottom define a channel, the height of the channel in the vicinity of the uppermost apex corresponds approximately to the width of the channel thereat, and the width of the channel in a vicinity of the lowermost beginning is greater than the width of the channel in the vicinity of the uppermost apex.
4. The vibrating abrasive container according to claim 3, wherein the width of said channel continuously reduces up to said vicinity of the uppermost apex of the container in the direction of conveyance of the contents in the channel, said lateral walls constitute an inner wall and an outer wall of said channel, said inner and outer walls of the channel are circular in cross-section over substantially their entire circumferences and have origins respectively off-set relative to each other.
5. The vibrating abrasive container according to claim 1, wherein the lateral walls define a channel therebetween, said lateral walls are parallel to each other and vertical.
6. The vibrating abrasive container according to claim 1, wherein said arcuate section and said gradient section have a substantially circular annular shape, said gradient section constitutes a descending section in the direction of the contents defining a straight section thereof interrupting said circular annular shape, a discharge section extends at an obtuse angle relative to said straight section and as a secant relative to said circular annular shape, a flap means is mounted in said straight section for actuating said discharge section.
7. The vibrating abrasive container according to claim 1, wherein said machine frame includes a sub-frame having an upper surface, said container is carried by said springs, said springs are substantially equal to one another in length, said springs are seated upon said upper surface of said sub-frame, said upper surface extends at an acute angle relative to the horizontal.
8. The vibrating abrasive container according to claim 1, wherein said container has a circular cross-sectional shape defining an origin, a discharge spout is arranged as a secant relative to said circular cross-sectional shape of said container and communicates with the gradient section adjacent the lowermost beginning of the container, a discharging and separating unit between said lateral walls extends in the downstream direction away from the uppermost apex of the container, said discharging and separating unit has the shape of a circular section and is displaceable concentrically around said origin of said container in an upstream direction towards a vicinity of said uppermost apex in said discharge position of said unit and in the downstream direction away from said vicinity of the uppermost apex in a non-discharge position of said discharging and separating unit, respectively, said discharging and separating unit has an end portion formed with an end wall, said end portion in said discharge position of said unit is positioned adjacent said discharge spout, said unit has an end facing the upstream direction, said end engages the bottom of said gradient section slightly downstream of the vicinity of said uppermost apex in the discharge position.
9. The vibrating abrasive container according to claim 8, wherein said discharging and separating unit is horizontal, said end wall extends between said lateral walls.
10. The vibrating abrasive container according to claim 1, wherein the lateral walls constitute an inner wall and an outer wall defining a channel therebetween, said outer wall has an interior surface comprising, in a vicinity of an upper edge thereof, a cross-sectionally triangular annular bead projecting into the interior of said channel and extending in a substantially horizontal plane.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792946538 DE2946538C2 (en) | 1979-11-17 | 1979-11-17 | Ring-trough-shaped vibratory scrubbing container |
| DEP2946538.1-14 | 1979-11-17 | ||
| DEP3024982.2 | 1980-07-02 | ||
| DE19803024982 DE3024982A1 (en) | 1980-07-02 | 1980-07-02 | Vibrating scouring or grinding container - has annular container bottom inclined to axis of vertical oscillation generator to give helical motion to contents |
| EP80106216A EP0029897B1 (en) | 1979-11-17 | 1980-10-13 | Annular trough shaped vibrating polisher containers |
| EP80106216.7 | 1980-10-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1156045A true CA1156045A (en) | 1983-11-01 |
Family
ID=27188299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000364731A Expired CA1156045A (en) | 1979-11-17 | 1980-11-14 | Annular trough-shaped, vibrating abrasion treatment apparatus |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | ATE2878T1 (en) |
| CA (1) | CA1156045A (en) |
| FR (1) | FR2469246A1 (en) |
| GB (1) | GB2063118B (en) |
| SE (1) | SE435463B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1240111A (en) * | 1968-01-08 | 1971-07-21 | Lucas Industries Ltd | Ignition distributors |
| CH492518A (en) * | 1968-05-27 | 1970-06-30 | Huber Ernst | Machine for deburring, polishing, mixing and grinding |
| US3771266A (en) * | 1970-07-08 | 1973-11-13 | H Kobayashi | Vibratory finishing apparatus with a helical and tubular container |
| FR2178388A5 (en) * | 1972-03-30 | 1973-11-09 | Roto Finish Sarl | |
| GB1444893A (en) * | 1974-05-24 | 1976-08-04 | Walther Carl Kurt Kg | Vibratory abrading devices |
| FR2419802A1 (en) * | 1978-03-13 | 1979-10-12 | Parker Ste Continentale | VIBRATING FINISHING MACHINE |
-
1980
- 1980-10-13 AT AT80106216T patent/ATE2878T1/en active
- 1980-10-30 FR FR8023240A patent/FR2469246A1/en active Granted
- 1980-11-11 SE SE8007908A patent/SE435463B/en not_active IP Right Cessation
- 1980-11-12 GB GB8036299A patent/GB2063118B/en not_active Expired
- 1980-11-14 CA CA000364731A patent/CA1156045A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2063118A (en) | 1981-06-03 |
| SE435463B (en) | 1984-10-01 |
| SE8007908L (en) | 1981-05-18 |
| FR2469246A1 (en) | 1981-05-22 |
| ATE2878T1 (en) | 1983-04-15 |
| GB2063118B (en) | 1982-12-08 |
| FR2469246B1 (en) | 1984-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |