DE8600583U1 - Ring trough vibratory finishing machine - Google Patents

Description

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/5 Ring trough vibratory finishing machine

The invention relates to a ring-trough vibratory grinding machine according to the preamble of claim 1.

It is common practice in ring trough vibratory grinding machines to control the ramp using a hydraulic cylinder. In the submerged position it rests on the bottom of the container, while in its position above the container contents it hits a stop. Such a design is complex to construct and leads to higher manufacturing costs. Furthermore, there is greater wear because the ramp is braced against a stop. Premature bearing damage can also occur in the area of the ramp bearing.

It is also known to provide a handle on the horizontal axis of the ramp on the outside of the container, which locks into the respective end positions of the ramp. In addition to greater wear, this design also involves considerable construction effort.

Finally, ramps are known which, in their raised position, rest on the container contents and follow their expansion movements. If the container contents are to be discharged, the drive must be set to reverse so that the container contents force the ramp into its position resting on the container floor. This design requires increased drive technology.

VNR: 107212 ANR: 1044915 18 948 Dr. R./S/G 6.1.1986

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The object of the invention is to design a ring trough vibration grinding machine of the type in question in a way that is more cost-effective in terms of production technology and use.

This task is solved by the fact that the ramp is held in its position above the container contents due to weight relief.

As a result of this design, a generic ring trough vibratory grinding machine is specified, which is characterized in particular by a design that is simple to manufacture and easy to use. It is not necessary to fix the ramp separately in its position above the container contents or to hold it against a stop. The latter is achieved by weight relief. This leads to a much lighter and more cost-effective construction. In addition, the construction height is lower and thus the free passage under the horizontal axis is larger. There is also less wear, because the ramp does not have to be braced against a stop and swings freely on the opposite side, thus knocking out the bearings etc. If the ramp is to be brought into its discharge position, it only has to be pivoted so far that the area opposite the horizontal axis dips into the container contents, which then pivots the ramp further and brings it into the position on the container floor.

It is particularly advantageous to relieve the weight by means of a counterweight projecting from the horizontal axis on the outside of the ring trough wall.

VNR: 107212

ANR: 10449&Iacgr;5 18 948 Dr. R./S/G

6.1.1986

This makes the construction particularly simple. Instead of a counterweight, it would also be possible to use a spring, for example.

It is advantageous from an operational point of view that the counterweight is directed vertically downwards in the position of the ramp above the container contents. It is particularly advantageous if the counterweight in this position is at a swivel angle of approximately 20° from the vertical. This ensures greater safety against the ramp sinking too early.

Making the counterweight pear-shaped offers advantages in terms of handling. This also largely prevents the risk of injury.

Another advantageous feature is that the side j

edges of the ramp follow the curvature of the ring trough with a curved bottom, i.e. concave on the inside and convex on the outside. This means that the ramp in its position above the container contents is in a clamping position to the inner wall of the container, in which the ramp is held by the counterweight. The ramp cannot exceed this position unless larger machining tolerances are selected.

The fact that the sieve of the separating sieve section is inserted into grooves in the separating sieve section side walls against the discharge direction of the container contents also contributes to the solution of the inventive task.

VNR: 107212 ANR: J 044915 18 948 Dr. R./S/G 6.1.1986

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pushed plate. In contrast to known designs, the screen no longer has to be inserted and wedged from above. Corresponding blocks and wedges can therefore be omitted. The grooves ensure that the pushed-in plate is secured in position. So that it remains securely in its pushed-in position, it is fixed by means of screws that are braced against the narrow edge of the plate and screwed through the side wall of a separating screen section. A wide variety of vibrations cannot move the plate from its inserted position. In order to form one groove, it is advantageous that the inner wall of the separating screen section is fitted with a lining plate, the lower edge of which forms the groove for inserting the screen plate.

In order to achieve the desired simple and convenient design, the inner wall of the separating screen section is formed by a cross member that is attached at one end in a tangential position to the inner dome of the ring trough and at the other end in an overlap with the outer wall of the ring trough. This measure has advantages in terms of shape, particularly with regard to the manufacture of the lining. For the purpose of simple attachment, the cross member forms an upper angle leg that is attached to the head surface of the dome and that of the outer wall of the ring trough. Attachment is preferably carried out by screwing. In order to maintain the groove on this cross member, it has an oppositely directed angle leg on its lower longitudinal edge, which forms the lower groove wall. The lower edge of the lining plate is opposite this.

Finally, a favourable feature is that the ramp has a return channel in front of the screening section that overflows from the container contents.

VNR: 107212 ANR: 1044915^ -8 948 Dr. R./S/G 6.1.1986

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The backflow prevention wall has a ramp that extends at an obtuse angle from the ramp in the area of its narrow side facing the movement of the container contents. This facilitates the retraction of the ramp into the container contents because the backflow prevention wall increases the area of contact for retracting the ramp.

An embodiment of the invention is shown in Figs. 1 to 5. It shows

Fig. 1 a view of a ring trough vibration grinding machine with ramp pivoted into the discharge position,

Fig. 2 a top view of the ring trough vibrating scrubber container,

Fig. 3 a view of the separating screen sections, seen against the discharge direction, partially broken away,

Fig. 4 a section through the ring trough vibrating scrubber container in the area of the separating screen section with the ramp in the discharge position and

Fig. 5 shows a section corresponding to Fig. 4, but with the ramp positioned above the container contents,

The ring trough vibratory grinding machine has a base frame 1 containing the drive (not shown), which is supported by compression springs

VNR! 107212 ANR: 1044915 18 948 Dr. R./S/G 6.1.1986

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a ring trough vibration scrubbing container 3 is supported. The vibration generator excited by the Antnob, also not shown, is mounted centrally to the ring trough vibration scrubbing container 3.

The bottom 4 of the container channel runs horizontally and merges into the ring trough outer wall 6 via a curve 5. Concentrically to this, the transition zone extends without a curved transition zone:

j Bottom 4 outgoing ring trough inner wall 7, which has a central dome

This container channel is provided with an elastic lining 8.

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A separating screen section 9 extends in a tangential arrangement to the ring trough vibration scrubbing container. Its inner end 10 lies radially to the ring trough vibration scrubbing container 3, while the outer end 11

] over the outer wall 6 of the ring trough. The projecting area of the

separating screening section 9 is supported by a sliding wall F, which runs diagonally downwards towards the center of the container. The screen 12 of the separating screening section 9 is designed as a plate, which is inserted into grooves 13, 14 of the separating screening section side walls 15, against the discharge direction. The groove 13 is located in the outer separating

lining 8 associated with the sieve section side wall 15, see Fig. 3.

The inner wall of the separating screen section, i.e. the inner separating screen section side wall 16, is formed by a cross member 17 which is attached at one end in a tangent position to the inner dome of the ring trough and at the other end in an overlap to the ring trough outer wall G. This has an upper cross member 17 which is attached to the head surface of the dome and that of the ring trough outer wall.

VNR; 107212 ANR: 1044915 18 948.. Dr, R./S/G 6.1.1986

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The sieve plate 12, which is inserted into the grooves 13, 14 in a form-fitting manner, is fixed by means of screws 24 which are clamped against the outer narrow edge 12' of the plate and which are turned through a sieve section side wall 15. Two such screws 24 are arranged, which are at the height of the groove 13.

A ramp 25 is arranged in front of the separating screen section 9, which extends in the curved area of the container channel. The side edges 26, 27 of the ramp 25 are designed according to the curvature of the ring trough. The inner side edge 26 is therefore concave and the outer side edge 27 is convex. The lower edge 28 of the ramp 25 runs parallel to the radially aligned horizontal axis 29 arranged at the level of the screen 12 and, when the ramp is pivoted in, sits on the apex line 30 of a bottom-side dam 31. The latter lies approximately tangentially to the inner wall 7 of the ring trough. The angle of rise and the angle of fall of the dam 31 is approximately 20°.

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Angle leg 18. The inner end of the same is penetrated by a screw 19, which engages a horizontal flange 20 of the dome. Another screw 19 penetrates the other end of the angle leg 18 and penetrates the horizontal flange 21 of the ring trough outer wall 6 and is braced there. The inner wall of the separating screen section, i.e. the inner separating screen section side wall 16, is fitted with a lining plate 22, which with its lower edge 22' forms the groove 14 for inserting the screen plate 12. On its lower longitudinal edge, the cross member 17 is provided with an oppositely directed angle leg j

23, which represents the lower groove wall.

VNR: 107212 ANR: 1044915 18 948 Dr.R ./S/G 6.1.1986

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The horizontal axis 29, which is mounted in the outer wall of the ring trough and the inner wall of the ring trough, carries a pear-shaped counterweight 32 on the outside of the container. The latter is directed approximately vertically downwards in the position of the ramp above the container contents, see Fig. 5. Then the ramp 25 extends approximately horizontally, while the counterweight is approximately at a swivel angle alpha of 20° in front of the vertical V-V. The ramp 25 is therefore held in its position above the container contents 33 due to weight relief, which container contents are known to consist of processing bodies 34 and workpieces 35. The vibrations acting on the ring trough vibration scrubbing container are not able to move the ramp 25 from its weight-relieved position.

The ramp 25 carries a backflow prevention wall 36 at a distance in front of the screening section 9, over which the container contents flow. This is equipped with a ramp slope 37 extending at an obtuse angle from the top of the ramp in the area of its narrow side facing the movement of the container contents.

The ring trough vibratory grinding machine works as follows:

If the container contents 33 are to pass through the ring trough vibration scrubbing container 3 several times during surface treatment, the ramp 25 is brought into the position shown in Fig. 5. This position is maintained by the counterweight 32. The container contents 33 cannot therefore reach the separating screen and pass underneath it.

VNR: 107212 ANR: 1044915 18 948 Dr.R./S/G 6.1.1986

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The removal of the workpieces requires the bridging position of the ramp 25 as shown in Fig. 4. If the edge 28 of the ramp 25 is immersed in the container contents 33, the ramp is automatically retracted. The backflow prevention wall 36 increases the contact surface, which leads to the ramp being swung in more quickly. It then rests on the dam 31. The container contents 33 now overflow the ramp 25 and the backflow prevention wall 36. The separation between the processing bodies 34 and the workpieces 35 takes place on the sieve 12. The processing bodies fall through the sieve 12 while the workpieces 35 are removed.

The backflow prevention wall 36 ensures that the movement component that occurs during the spiral movement from the outside to the inside is converted into an upward component, so that the workpieces 35 are safely discharged and do not slip back again. Even spherical workpieces can then be safely placed on the screen.

Instead of the counterweight 32, a tension spring or a leaf spring could also be used, which causes the ramp 25 to remain in its position above the container contents.

All 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.

VNR: 107212 ANR: 1044915 18 948 Dr. R./S/G 6.1.1986

Claims (13)

tilts ·· it ■ et ·■ Carl Kurt Walther GmbH & Co. KG, Bahnstraße 43-51, 5600 Wuppertal CLAIMS 1. Ring trough vibratory grinding machine with a separating screen section arranged above the floor and a ramp extending from the floor to the height of the separating screen section, which ramp can be moved about a horizontal axis from its position immersed in the container contents to a position above the container contents, characterized in that the ramp (25) is held in its position above the container contents (33) due to weight relief. 2. Ring trough vibration grinding machine according to claim 1, characterized in that the weight relief is achieved by a counterweight (32) projecting from the horizontal axis (29) on the outside of the ring trough wall. 3. Ring trough vibration grinding machine according to one or more of the preceding claims, characterized in that the counterweight (32) is directed approximately vertically downwards in the position of the ramp (25) above the container contents (33). VNRi 107212 ANRi &igr; 1
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I » · «« ii '****&Igr;*&iacgr;·&iacgr;· ε /2 I 4. Ring trough vibratory finishing machine according to one or more of the f _t preceding claim, characterized in that the counterweight (32) in the horizontal position of the ramp (25) above the container contents (33) is pivotable approximately at a pivot angle (alpha) of 20° from the vertical (V-V). I 5. Ring trough vibratory grinding machine according to one or more of the ? preceding claims, characterized in that the counter- jj weight (32) is pear-shaped. &igr; 6. Ring trough vibratory finishing machine according to one or more of the I preceding claims, characterized in that the side edges (26, 27) of the ramp (25) run according to the curvature of the annular trough designed with a curved bottom (4), ie inside % concave on one side and convex on the other. , 7. Ring trough vibratory grinding machine with above ground mounted I arranged separating screen section and one from the floor to the height of the Separating screen section extending ramp, which is pivotable about a horizontal axis from its position immersed in the container contents ^into a position above the container contents, characterized by f is characterized in that the screen (12) of the drying screen section (9) is guided by a grooved (13, 14) of the separating screen side walls (15, 16) against the discharge direction (x) of the container contents (33) inserted plate is formed is. I VNRi 107212 ANR; 1044915 18 948 Dr.R,/S/Q 6.1.1986 I· * · ti » » MIl14 i « * t I I I t I * t * ttt · «· fill It /3 8. Ring trough vibration sliding grinding machine according to claim 7/ characterized in that the plate (12) is fixed by means of screws (24) braced against the plate narrow edge (12 ¹ ) and rotated through a separating screen section side wall (15). 9. Ring trough vibration grinding machine according to one or more of the preceding claims, characterized in that the inner wall of the separating sieve section (9) is equipped with a lining plate (22) which forms with its lower edge (22 ¹ ) the groove (14) for inserting the sieve plate (12). 10. Ring trough vibratory grinding machine according to one or more of the preceding claims, characterized in that the inner wall of the separating screen section (9) is formed by a cross member (17) fastened at one end in a tangential position to the inner dome of the ring trough and at the other end in an overlap with the ring trough outer wall (6). 11. Ring trough vibration grinding machine according to one or more of the preceding claims, characterized in that the cross member (17) forms an upper angle leg (18) fastened to the head surface of the dome and that of the ring trough outer wall (6). 12. Ring trough vibration grinding machine according to one or more of the preceding claims, characterized in that the cross member (17) has an oppositely directed angle leg (23) on its lower longitudinal edge, which forms the lower groove wall. VNR: 107212 ANR: 1044915 18 948 Dr.R./S/G 6.1.1986 HI ^-X /4 13. Ring trough vibration grinding machine according to one or more of the preceding claims/ characterized in that the ramp (25) at a distance in front of the sieve section (9) carries a backflow prevention wall (36) running over the container contents (33) with an obtuse-angled ramp (37) extending from the ramp (25) in the region of its narrow side facing the movement of the container contents. VNR: 107212 ANR: 1044915 18 948 Dr.R./S/G 6.1.1986 you are