EP0029897A1 - Annular trough shaped vibrating polisher containers - Google Patents

Abstract

The track line (S) of the vibrating scrubbing tank bottom lies in a plane which is inclined at an acute angle to the horizontal (H) and thus also at an acute angle to the vertical axis of the vibration generator, and in such a way that the highest (B1) and lowest (B ) Point approximately diametrically opposite each other, so that a helical circulating processing movement of the container contents also takes place on the sloping container section.

Description

The invention relates to a ring trough-shaped vibration scrubbing container according to the preamble of the main claim.

Vibration scrubbing containers are known (DE-OS 19 57 547) which have a helically extending container bottom. The highest part of the container is connected to the lowest part of the container via a drop step. Accordingly, the workpieces and processing bodies are conveyed up to the end of the container in order to fall from there into the lowest container beginning. However, such a drop step can lead to damage, particularly in the case of sensitive workpieces. The drop level also degrades the performance of the machine.

In other solutions (FR-PS 72 11 211) the container including the vibration generator can be tilted to accelerate the emptying through an opening arranged behind the drop step. This inclined position cannot be that of the working process because, due to the oscillator that is also tilted in the tilted position, there is no longer any spiral-shaped circulation of the container contents. The intended drop level also brings the same disadvantages as above.

In still other containers, it is known (CH-PS 492 518) to convey up in several individual arc sections. A rectilinear horizontal section lies between each two arc sections. Behind the last bo opposite section, a vertex is formed, after which the channel bottom has a sloping course again, in order to flow into the lowest-lying container beginning. In the case of considerable hoisting, that is to a level that is as much higher as possible, the steepness of the descending course is effectively equivalent to the fall level because of its steepness. The contents of the container slide down without a surface treatment process taking place there.

In contrast, the object of the invention is based on the object of making a ring trough-shaped vibrating scrubbing container of the type mentioned more advantageous in terms of use in a production-technically simple manner such that grinding also takes place on the sloping channel section.

This object is achieved by the invention specified in the characterizing part of the main claim. The subclaims highlight advantageous developments.

As a result of such a configuration, a generic vibration scrubbing container of increased utility value is specified. A drop level between the highest vertex to the lowest beginning no longer occurs. This allows gentle processing of the workpieces. The long, continuously decreasing course of the remaining length of the container bottom is selected so that there is also circulation and processing of the workpieces (slide grinding) with simultaneous loosening of the container contents in this section. It has been found that shorter surface processing times can be achieved.

The layout of the ring trough-shaped vibrating scrubbing containers can be designed differently. So it is z. B. possible to choose a circular, oval, egg-shaped or square floor plan. The bottom of the container is then always composed of a rising and an approximately equally long falling bottom section. Handling is also improved. The track line of the ground lies in one plane and this is at an acute angle to the horizontal. However, the axis of the vibration generator is still vertical, so that a perfect free helical circulation takes place. The bottom of the container does not have any unevenness. This also favors the manufacture of the scrubbing container. Optimal machining results are obtained when the inclination angle of the plane is approx. 20 degrees.

• Fig. 1 eine Seitenansicht eines von einem Maschinenuntergestell getragenen Vibrations-Scheuerbehälters gemäß der ersten Ausführungsform mit kreisförmigem Grundriß,
• Fig. 2 eine Draufsicht auf den Vibrations-Scheuerbehälter bei in Austragsstellung befindlicher Austrags- und Trenneinrichtung,
• Fig. 3 in schematischer Darstellung eine Abwicklung des Vibrations- Scheuerbehälters mit in Wirkung gebrachter Austrags- und Trenneinrichtung,
• Fig. 4 eine der Fig. 2 entsprechende Darstellung, jedoch bei außer Wirkung gesteuerter Austrags- und Trenneinrichtung,
• Fig. 5 eine die Fig. 4 betreffende Abwicklung,
• Fig. 6 eine Draufsicht auf den Vibrations-Scheuerbehälter gemäß der zweiten Ausführungsform, bei welcher ein tangentialer Austragsschieber vorgesehen ist,
• Fig. 7 eine Abwicklung dieses Vibrations-Scheuerbehälters bei Anordnung des tangentialen Austragsschiebers,
• Fig. 8 eine Ansicht eines von einem Maschinenuntergestell gestragenen Vibrations-Scheuerbehälters gemäß der weiteren Ausführungsform,
• _Fig. 9 eine Draufsicht auf diesen Vibrations-Scheuerbehälter bei in Austragsstellung befindlicher Klappe,
• _Fig. 10 in schematischer Darstellung einen Ausschnitt der Abwicklung dieses Vibrations-Scheuerbehälters im höchstliegenden Bereich bei in Austragsstellung gebrachter Klappe,
• Fig. 11 einen Querschnitt durch die Behälterrinne dicht vor der Klappe,
• Fig. 12 eine Ansicht des Vibrations-Scheuerbehälters gemäß einer weiteren Ausführungsform,
• Fig. 13 eine Draufsicht auf diesen Vibrations-Scheuerbehälter.
• Fig. 14 und 15 dieselbe Ausführung wie Fig. 8, jedoch mit in den Rinnenraum ragendem Ringwulst.

Further advantages and details emerge from the following description of four exemplary embodiments. Show it:

• 1 is a side view of a vibrating scouring container carried by a machine base according to the first embodiment with a circular plan,
• 2 shows a plan view of the vibrating scrubbing container with the discharge and separating device in the discharge position,
• 3 shows a schematic representation of a development of the vibration scrubbing container with the discharge and separating device brought into effect,
• 4 shows a representation corresponding to FIG. 2, but with the discharge and separating device controlled out of action,
• 5 is a settlement relating to FIG. 4,
• 6 is a plan view of the vibration scrubbing container according to the second embodiment, in which a tangential discharge slide is provided,
• 7 is a development of this vibrating scouring container when the tangential discharge slide is arranged,
• 8 is a view of a vibration scrubbing container carried by a machine base according to the further embodiment,
• _F ig. 9 shows a plan view of this vibrating scrubbing container with the flap in the discharge position,
• _F ig. 10 shows a schematic representation of a section of the development of this vibration scrubbing container in the highest area with the flap brought into the discharge position,
• 11 shows a cross section through the container trough close to the flap,
• 12 is a view of the vibration scrubbing container according to another embodiment,
• Fig. 13 is a plan view of this vibration scrubber.
• 14 and 15 the same embodiment as FIG. 8, but with an annular bead protruding into the channel space.

The vibratory vibratory grinding machine has a machine base frame 1 which is circular in plan with a drive motor 2 fixed on the circumference. The flyweight imbalance masses 4, 5, which are designed as disk segments, are set in motion by means of a belt drive 3.

The machine base 1 has an upper side 6 which is inclined at an acute angle to the horizontal and from which lugs 7 extend in a uniform angular distribution. These serve to support compression springs 8 of approximately the same length, which also carry the vibrating scouring container 9 with the interposition of lugs 10.

The vibrating scrubbing container 9 has an annular plan. The track line S of the container bottom 11 runs in a plane arranged at an acute angle to the horizontal H, namely the angle of inclination alpha is approximately 20 degrees. This plane is also inclined at an acute angle to the axis of the centrifugal weights 4/5.

There is a U-shaped container cross-section. The height of the gutters Sidewall 12 protrudes in the lowest area up to the level of the floor track line S in the highest area. This is indicated by the horizontal line L.

As a result of such a design of the vibrating scrubbing container, it has a bottom section 11 'which rises from the lowest container beginning B to the highest container apex B' and the bottom section 11 '' which descends from the highest apex B 'to the lowest point B since the track line S runs in one plane , the angle of rise and fall are the same.

The contents of the container are conveyed from the lowest beginning B to the highest vertex B 'in the direction of the arrow y by means of the flyweight imbalance masses 4, 5. But the sloping container section also appears as a processing section with this circulation effect.

An emptying opening is provided in the lowest area.

The vibrating scrubbing container 9 is equipped near the lowest-lying container beginning in the region of the sloping bottom section 11 "with a secant-like discharge nozzle 13. This is assigned a discharge and separation device 14 which can be displaced concentrically to the center of the container M in the direction of the highest vertex B ' With regard to the circular ring section, there is a separating screen 15 with the highest apex B 'facing ramp 16. The other end of the separating screen forms a raised end wall 17 which extends flush between the inner and outer walls of the container .

If the container contents, consisting of the processing bodies 18 and the workpieces 19, pass through the container several times during processing, the separating screen 15 is brought into the position according to FIGS. 4 and 5. Then the contents of the container are conveyed upward in the region of the rising floor section 11 '. After reaching of the highest lying top of the container B ', the contents of the container move through the processing section, which drops continuously to the lowest beginning B, while loosening up at the same time. Fig. 5 shows that the contents of the container then pass under the separating sieve. It is also illustrated in FIG. 5 that the container content helix has the greatest thickness in the deepest beginning B.

If the workpieces 19 are to be discharged after the surface treatment has taken place, the separating screen 15 is to be moved into the position illustrated in FIGS. 2 and 3. This can be done by motor or by hand. The end 16 of the separating screen 15 facing the conveying direction y abuts the channel bottom 11 just behind the highest end B ', see FIG. 3. In this position, the end wall 17 of the separating screen 15 extends in extension to the discharge side wall 13'. . The container contents therefore reach the separating screen 15. The processing bodies 18 fall through while the workpieces 19 are being discharged.

In the embodiment shown in FIGS. 6 and 7, a tangentially oriented discharge nozzle 20 is provided. This extends above the sloping container bottom 11 ". The discharge nozzle 20 guides a discharge slide 21 which is designed as a separating sieve 22. In the discharge position its end 23, which is designed as a ramp and faces the conveying direction y, is placed on the channel bottom shortly behind the highest end B ' 11. The separating screen 22 is also provided with a raised wall 24 which, in the discharge position, extends in the extension of the shorter side wall 20 'of the discharge spout 20. When the discharge slide 21 is brought into effect, there is a separation between workpieces 19 and processing bodies 18.

If a repeated circulation of the container contents is desired, the discharge slide, as indicated by dash-dotted lines in FIGS. 6 and 7, must be pulled out.

Another variant, not shown, is that instead of a separating sieve which can be moved concentrically to the center of the container, this separating sieve from is inserted into the vibrating scrubbing container at the top.

It can be seen that the upper centrifugal weight 4 extends in the interior of the annular vibrating scouring container 9 and the lower centrifugal weight 5 extends in the upper region of the machine base 1.

In the embodiment according to FIG. 8, the cross-sectionally U-shaped vibrating scouring container trough is such that the trough height in the deepest region B of the transversely curved container bottom 11 is approximately twice as large as that in the highest container region B '. The gutter height in the highest region B 'corresponds approximately to the gutter width, see FIG. 8.

The side walls 12 ', 12 "emanating from the container bottom 11 are dimensioned such that they extend in the deepest area to approximately the height of the upper edge of the side walls provided in the highest container area. This means that the upper container edge is arranged on a horizontal plane. In addition, the channel side walls 12 ', 12 "of the vibration scrubbing container 9 are aligned parallel to one another and perpendicularly.

As a result of the track line S inclined to the horizontal H and in one plane, this vibrating scrubbing container also has a bottom section 11 'which rises from the lowest container beginning B to the highest container area B' and the bottom section 11 '' which slopes from the highest area B 'to the lowest area B Angles of rise and fall are the same.

Close behind the highest area B ', that is to say in the sloping bottom section 11 ", the scrubbing container trough merges into a straight section 32. The cross section of the latter is somewhat enlarged. In this straight section 32 there is a flap 33, the direction of conveyance of the contents of the container facing end section 34 corresponds to the curvature of the floor of the vibrating scouring container channel in the line 32. The edge of the end section 34 is aligned secant to the circular shape of the vibrating scouring box 9, compare che. 9. The curvature surface 35 starting from the end section 34 merges into a plane 36 shortly before the horizontal axis of the flap 33. The flap axis adjacent to the plane 36 is formed by a film hinge zone 37, and the flap 33 is fixed beyond the film hinge zone 37 on a crosspiece 38 of the vibrating scrubbing container channel. Both this crosspiece 38 and the film hinge zone 37 run secant to the circular shape of the vibration scrubbing container 9.

In the discharge position, the bottom surface of the flap 33 is directed inclined. The transverse curvature of the flap continues in upwardly directed side walls 39, which end at the level of the upper edge of the vibrating scrubbing container 9 when the flap is in the discharge position. In the region of the end section 34, the side walls 39 continue into the webs 39 ′ projecting into the vibrating scrubbing container 9, which are connected to one another by a yoke 39 ″.

The flap 33 or the crosspiece 38 is followed by a discharge section 40 which is arranged in a secant shape to the circular shape of the vibration scrubbing container. The latter continues in a discharge spout 13. In the discharge section 40 there is a separating screen 15 located at the level of the crosspiece 38. This or the discharge section 40 is at an obtuse angle to the straight section 32 receiving the flap 33.

If the container contents for processing the workpieces are to pass through the vibrating scrubbing container 9 several times, the flap 33 is to be pivoted into the dot-dash position shown in FIG. 10. For the purpose of discharge, the flap 33 is moved in the downward direction, the curved end portion 34 of which positively engages the bottom surface of the scrubbing container channel. The container content coming from the highest region B 'of the container bottom 11 thus runs onto the flap 33, can continue to move helically there over a certain length and is then passed onto the separating screen 15. The machining bodies fall through while the workpieces are being discharged.

As illustrated in FIG. 8, the height of the helix in the lowest area B is approximately twice as large as in the highest area B '. During processing, therefore, the container contents in the highest region B 'reach a higher speed while loosening the container contents. In other words, this means that the pitch of the helix increases in the highest region B '. The constant change in the cross section of the helix leads to a change in the pressure and speed of the container contents, which results in an increased processing performance.

In the variants of the vibrating scrubbing container 41 shown in FIGS. 12 and 13, the channel width in the deepest area B is larger than in the highest area B ', and in this case there is a ratio of approximately 2: 1. The cross-sectional shape of the helix is illustrated in these areas with broken lines in FIG. 12.

In this embodiment there is a continuous reduction in width from the lowest region B to the highest region B '. This shape is achieved in that the gutter inner and outer walls 42, 43 run circularly over almost their entire circumferential length and have offset center points M and M '.

A straight section 32 ′ is also provided behind the highest-lying container area B, which serves to receive a flap 33. Downstream of this is the discharge section 40 ', which also extends in a secant shape to the circular shape of the vibrating scrubbing container 41.

The gutter side walls 42, 43 are aligned exclusively vertically to one another in this embodiment.

In the embodiment shown in FIGS. 14 and 15, which largely corresponds to the design illustrated in FIG. 8, the same parts have the same reference numerals. In a departure from the design shown in FIG. 8, the inner surface of the outer channel wall 12 'near the upper edge has a protruding portion into the interior of the channel, approximately in the horizontal plane extending, in cross-section triangular annular bead 44. In the exemplary embodiment, this is formed by a material thickening of the container lining 45 made of rubber or suitable plastic.

All the new features mentioned in the description and shown in the drawing are essential to the invention, even if they are not expressly claimed in the claims.

Claims (9)

1. Ring trough-shaped vibrating scouring container carried by the springs of a machine frame with upward-facing side walls and an arc section which rises in the conveying direction of the container contents, on which the container contents can be moved on a helical path from the lowest container beginning to the highest container vertex on the helical path due to the centrifugal weights generated around a vertical axis and from there via a slope to the lowest container beginning, characterized in that the track line (S) of the container bottom runs in a plane inclined at an acute angle to the horizontal (H) and that the lowest container beginning (B) and the highest container apex are diametrically opposed to each other. 2. Vibrating scouring container according to claim 1, characterized in that the angle of inclination is approximately 20 ° and the lowest container beginning (B) is surmounted by side walls which extend approximately to the height of the upper edge of the side walls provided in the highest container region (B '). 3. Vibration scrubbing container according to claim 1, characterized in that the channel height in the highest area (B ') corresponds approximately to the channel width and the channel width in the lowest area (B) is greater than in the highest area (B'). 4. Vibration scrubbing container according to claim 3, characterized by a continuous reduction in width up to the highest container area (B ') such that the inner and outer walls (42, 43) are circular over almost their entire circumferential length and offset center points (M, M own). 5. Vibration scrubbing container according to claim 1, characterized in that the channel side walls are aligned parallel to each other and perpendicular. 6. Vibration scrubbing container according to claim 1, characterized by a circular section interrupting straight section (32 or 32 ') in the sloping section (1111), in which a flap (33 or 33') for bringing a discharge section (40 or . 40 ') is provided, which runs at an obtuse angle to the straight section (32 or 32') and secant to the circular ring shape. 7. Vibration scrubbing container according to claim 1, characterized in that the container (9) of mutually approximately equally long springs (8) is carried, which sit on an inclined angle to the horizontal top (6) of the machine base (1). 8. Vibrating scrubbing container according to claims 1 and 6, characterized in that an approximately from the highest container apex (B ') outgoing discharge and separation device (14) as concentric to the container center (M) in the direction of the highest apex (B') relocatable Circular ring section is formed, the end region of which with an end wall (17) in the discharge position (FIG. 2) lies next to a discharge snout (13) arranged in the manner of a secant and whose end (16) facing the conveying direction (y) is just behind the highest apex (B ') hits the gutter floor (11). 9. Vibration scrubbing container according to claim 1, characterized in that the inner surface of the channel outer wall (12 ') near the upper edge has a projecting into the channel space, approximately in the horizontal plane, cross-sectionally triangular annular bead (44).

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