EP1163154A1

EP1163154A1 - Turn-table for bottle-processing machine

Info

Publication number: EP1163154A1
Application number: EP00916988A
Authority: EP
Inventors: Rudolf Zodrow; Gregor Zodrow
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-22
Filing date: 2000-03-21
Publication date: 2001-12-19
Anticipated expiration: 2020-03-21
Also published as: EP1163154B1; ATE241507T1; WO2000056608A1

Abstract

The invention relates to a turn-table for bottles in a bottle-processing machine in which bottles are axially held between the turn-table and a clamping head. The turn-table consists of a rigid support (1) to the top of which a profiled disk (1) made of a flexible plastic is fixed. The keep the slip between the turn-table and a clamped bottle to a minimum the invention provides for the plastic disk (1) to have elements on its locating surface which ensure a form-fit with the fluting of the bottle base. These elements are formed by radial ridges (6a, 7a, 8a) whose width and mutual distance from each other is between 1 and 2 mm and whose height is between 0.4 and 0.6 times the total height of between 2.5 and 5 mm of the plastic disk (1) which has a Shore hardness of 94 to 99.

Description

Turntable for bottles in a bottle treatment machine

The invention relates to a turntable for bottles which have a corrugation in the edge region of their base, in a treatment machine in which the bottles can be clamped axially between the turntable coupled to a rotary drive and a clamping head, consisting of a dimensionally stable support and a disk fastened thereon compliant plastic, the contact surface has elements for a positive connection with the corrugation of the bottle bottom.

When treating bottles in bottle treatment machines, it is usually important that the bottles are rotated by the turntable as possible without slippage with respect to the turntable, because otherwise the treatment, in particular labeling, cannot be placed exactly on the circumference. In the case of bottles to be provided with a front and back label, a slip can lead to a different distance on both sides between the vertical edges of the front and back label.

Various proposals have been made in the past to solve this known problem. According to a known proposal for a turntable of the type mentioned at the outset (DE 35 14 239 Cl; DE 41 08 699 C2), the one which forms the contact surface and is fastened to the rigid support is formed in the outer layer resilient plastic disc embedded sharp-edged grains. This is intended on the one hand to achieve a high wear resistance of the turntable and on the other hand to achieve a positive connection between the turntable and the corrugation of the bottle base.

In a state of the art (DT-OS 1 761 059), which is considerably older than the aforementioned generic state of the art, an elastic plastic disc is embedded in a cup-shaped support, in the contact surface of which, with the exception of a central region, there are radially extending grooves '' from the middle Area run close to the outer edge and become increasingly wider. With the webs made of deformable elastic material it is achieved that even with low pressure on the bottle head, the bottle bottom rests securely on the contact surface of the bottle plate, but that nevertheless the water of the water film which favors slippage and adheres to the bottle bottom is radially pressed out and drained off. With this prior art, a large-scale adaptation of the contact area to the bottle bottom is achieved with the possibility of water drainage. Measures of a positive connection between the contact surface of the turntable and the corrugation of the bottle bottom are not provided.

The invention has for its object to provide a turntable of the type mentioned, in which the slip between the turntable and bottle is minimized.

This object is achieved in that the elements for the positive connection of radial webs are formed, the width and mutual distance 1 to 2 mm and the height 0.4 to 0.6 times the total height of 2.5 to 5 mm of the plastic disc with a Shore hardness from 85 to 99, in particular 94 to 98. According to the invention, “web” is understood not only as a rib, but also as a series of closely spaced knobs.

Comparative studies with the turntable according to the invention and the prior art turntables have shown that, contrary to conventional Drehtell ^s', no slippage occurs. The special profiling and dimensioning of the contact surface of the plastic disk, on the one hand, results in a good positive fit between the bottle base and the contact surface of the rotary plate and, on the other hand, good water drainage from the contact surface. It has been found that these advantages are not achieved at the expense of a long service life, because the form fit does not require an excessively high contact pressure. In addition, the radial webs exert a centering effect on the bottle to be clamped.

According to one embodiment of the invention, the webs are arranged in at least one closed circular ring or in distributed segments of a circular ring. They are preferably divided into at least two circular ring areas.

With this measure, a universal turntable can be created which, due to the different circular ring areas, allows the width of the webs and thus also their number to be corrugated Bottom of the bottle is matched to the diameter of different bottles.

Practically all common bottle formats are covered with a good positive fit between the bottle base and the turntable if the inner ring area extends up to a radius of 40 to 50 mm, in particular 45 mm, and the adjoining ring area up to a radius of 60 to 75 mm, in particular extend 67.5 mm.

If, according to a preferred embodiment of the invention, the webs do not extend in the radical direction over the entire radius of the disk, the disk should have an at least essentially full-area support surface inside the webs and a full-area water channel that is open to the rim of the plate outside of the webs , have annular support surface. With this design of the top of the disc it is achieved that the webs provided for the positive locking are protected as much as possible when the bottle to be treated is pushed onto the turntable and when it is pushed down, because the two support surfaces act like a bridge pillar for the bottle. Depending on the format of the bottles, the dimensioning should be such that the edge of the bottle reaches the central support surface when the center of gravity of the bottle is still in the area of the outer support surface.

Since the bottle generally has a smaller diameter than the turntable, there are no webs for the positive connection in the outer area of the turntable. In order to be able to drain water radially outwards, According to an embodiment of the invention, it is provided that every second web widens in the outer ring area in the radial direction up to the plate rim and forms a radial water channel open to the rim with the correspondingly widened neighboring section.

Further refinements of the invention have proven to be particularly favorable for the positive locking and the service life of the turntable, according to which the bottle base is resiliently supported by the disk in certain areas. According to a first embodiment, the disc is supported at least partially on a flexible cushion in the area of the webs. The cushion can consist of foam, that is to say it can be compressed, but it can also consist of a rubber-elastic, non-compressible material or even of a gel-like or liquid or gaseous medium. In the latter case, it can be encapsulated in a lower-side chamber of the pane. In these configurations, the disc, which is relatively thin and flexible in the support area, can largely adapt to the bottom of the bottle to be supported. The area supported on a flexible cushion can extend over the entire circumference or only over individual areas distributed over the circumference. These designs ensure optimum form-locking, above all because of the adaptability of the pane to the shape of the flax floor in the case of flat floors with rounded, coarse support studs. Therefore, the task of the invention can be solved with you regardless of the webs.

If the washer is supported with varying degrees of flexibility in areas distributed over the circumference, then This can be achieved according to a first alternative in that the carrier is raised in areas with low flexibility, that is to say the elastic plastic disc is thinner, or according to a second alternative in that the carrier has recesses in regions with greater flexibility which are made with flexible material , in particular compressible material.

There is a variant of the first alternative. This consists in the fact that flat elements made of a material with less flexibility are embedded in the back of the pane in areas with less flexibility in the case of a flat contact surface of the carrier. The elements can be cast or clamped.

This differently hard support of the disks in the different areas ensures that the pressing force in the hard-supported areas is greater than in the other areas, which has a favorable effect on the positive locking. The locally higher pressing force does not require a higher axial clamping force because, with the same pressing force, their proportions are only distributed to different degrees between the hard and less hard supported areas. As a side effect, both the one and the other alternative achieve a better transmission of the torque between the carrier and the disk. In the first alternative, the carrier engages with its raised areas in the pane, while in the second alternative the pane can engage in the recesses of the carrier with projections. To compensate for height tolerances, it is possible to leave out in the carrier an annular region which extends over a large radial width and which is filled with resilient, compressible material.

Finally, a clamping insert can be formed in the carrier and driver pins formed on the underside of the carrier.

The most common way of manufacturing the turntable is by injection molding. Depending on the design of the rotary device, various techniques are suitable for this. If the carrier of the turntable is raised in areas with less flexibility, the flexible plastic for the disc should be sprayed onto the dimensionally stable carrier. If, however, a turntable is to be produced, the support of which has a flat bearing surface and flat elements are embedded in the disk, it is more favorable if the plastic for the dimensionally stable support is sprayed onto the disk with the embedded flat elements on the support. In both cases, the pane cannot bulge during spraying in the areas, in particular between the webs, where the pane material is very thin due to the raised areas of the carrier or the flat elements. Further refinements of the invention, which can be implemented individually, in partial combination or cumulatively in the turntable according to the invention, result from the following description of various exemplary embodiments. In detail show:

Figure la a turntable in supervision, Figure lb the turntable according to Figure la in section along line II,

2a shows a turntable in another embodiment in supervision,

2b shows the turntable according to FIG. La in section along line II-II,

3a shows a turntable in a further embodiment in supervision,

3b shows the turntable according to FIG. 3a in section along line III-III,

FIG. 4a a turntable in a further embodiment in supervision,

4b shows the turntable according to FIG. 4a in a section along line IV-IV,

5a the turntable in a further embodiment in supervision,

5b shows the turntable according to FIG. 5a in section along line V-V,

FIG. 6 shows a turntable in supervision with a dimensioning of the webs that deviates from that of FIGS.

FIG. 7 is a top view of a turntable that differs from the turntable of FIG. 6 only in the webs, 8a shows a disk for a turntable in supervision,

8b shows the disk according to FIG. 8a in section along line VIII-VIII of FIG. 8a,

FIG. 9a a flat element for the disk according to FIG. 8a in supervision,

9b shows the element according to FIG. 9a in a section along line IX-IX of FIG. 9a,

FIG. 10 shows a turntable in a further embodiment in axial section,

Figure 11 shows the turntable according to Figure 10 in half, compared to Figure 10 enlarged axial section

and

Figure 12 shows the turntable according to Figures 10 and 11 in half enlarged axial section with a bottle supported thereon.

The turntable according to Figures la, lb is the simplest embodiment of the various embodiments. In this embodiment, the turntable consists of an elastic disk 1 made of plastic with a Shore hardness of 85 to 99, in particular 94 to 98, and a support 2 made of dimensionally stable plastic. A clamping insert 3 is formed in the center of the carrier 2. Driver pins 4 are formed on the underside of the carrier 2. The top of the Carrier 2 is flat. The plastic disc 1 is glued or preferably molded.

The disk 1 is profiled on its side forming the contact surface for the bottles. In the radial direction, ring areas 6, 7, 8 and an outer support surface 9 adjoin a full-surface central support surface 5 with three webs. The ring regions 6, 7, 8 are separated from one another by concentric web-free regions 10, 11, 12.

The webs 6a, 7a, 8a in the individual ring regions 6, 7, 8 run radially and are arranged at a distance from one another with the formation of radial channels 6b, 7b, 8b. They have a width and a mutual spacing of 1 to 2 mm and a height which is 0.4 to 0.6 times the total height of 2.5 to 5 mm of the pane 1. While the width of the webs 6a, 7a of the smallest and middle ring area 6, 7 is approximately the same, the width of the webs 8a in the outer ring area 8 is considerably larger. The number of webs 6a, 7a, 8a in the individual ring areas 6, 7, 8 is different. It is matched to the corrugation of the bottle bottom of the bottle to be treated.

The three ring areas 6, 7, 8 cover the effective contact area of all bottle formats to be treated. The outer support surface 9 thus protrudes regularly and is therefore not used to transfer the torque to the bottle. This outer support surface 9 forms, together with the central support surface 5, a bridge-like support for the bottle when it is pushed onto the turntable and when it is pushed down from the turntable. In order to be able to drain the water radially outward from the area between the turntable and the bottle base, every second web 8a widens in the radial direction and adjacent webs 9 form water-draining channels 9b between their widened regions 9a in the outer support surface.

The basic structure of the turntable according to the exemplary embodiment in FIG. 6, with its webs designed as ribs, corresponds to that in FIGS. 1 a, 1 b. It differs only in the dimensioning of the webs, especially by their extension in the radial direction. The special feature here is that the webs of the inner ring area up to a radius of 40 to 50 mm, in particular 45 mm, and the webs of the radially adjoining ring area up to a radius of 60 to 75 mm, in particular 67.5 mm, extend.

The exemplary embodiment in FIG. 7 differs from FIG. 6 only in that the webs of the inner, middle and outer ring region are not formed by ribs, but by knobs arranged in rows.

The following exemplary embodiments 2a to 5b correspond to the exemplary embodiment in FIGS. 1a, 1b in the profile of the contact surface of the disk 1, so that only the differences will be discussed in the following.

In the exemplary embodiment in FIGS. 2a, 2b, the carrier 2 has on its upper side facing the pane 1 Raised areas 13 distributed around the circumferential direction, which extend in the radial direction over the three ring areas 6, 7, 8 equipped with webs 6a, 7a, 8a. These raised areas 13 reduce the total thickness of the pane 1 from, for example, 5 mm to 3 mm. This is noticeable in the contact area in a lower flexibility of the disc 1 compared to the other areas. For the form fit, this means that the form fit is particularly large in the areas with less flexibility and thus greater contact pressure. This locally improved form-fit leads to an improvement in the freedom from slippage without the need for a higher axial clamping force. The raised areas 13 protruding into the disk 1 have the further advantage of a positive connection between the disk 1 and the carrier 2, which has an advantageous effect on the transmissible torque.

A different flexibility in the circumferential direction of the disc 1 can alternatively also be achieved in that instead of the raised areas 13 recesses are provided in the carrier 2, which are filled with a compressible material, for example cell volcano with a density of 35 to 55 g / cpm are. In this case, there is greater flexibility of the disk 1 in these areas compared to the other areas of the disk. In this case too, a form fit between the disk 1 and the carrier 2 can be achieved in that the disk 1 projects into the recesses of the carrier 2 with projections on the underside. In a further modification, an annular recess could also be provided, which is filled with the compressible material. This measure then serves to compensate for the height.

In the embodiment of FIGS. 3a, 3b, different measures are implemented compared to the embodiment of FIGS. 1a, 1b for better connection of pane 1 and carrier 2. On the one hand, the disc 1 surrounds the carrier 2 with a collar la. On the other hand, the disc 1 engages in an annular recess 14 in the carrier 2 with protruding webs 1b, 1c. And finally, the disc is supported in the area of the webs on a flexible cushion seated in the recess 14. The disc 1, which is somewhat thinner in this area, and the flexible cushion serve to compensate for the bottle base and / or to adapt to the shape of the bottle base. Such a configuration is easily made by spraying.

In the very similar embodiment of FIGS. 10 to 12, the recess forming a chamber is closed gas-tight if necessary by a cover 14a. The recess 14 can therefore accommodate not only a flexible cushion of foam or rubber-elastic material, but also a gel or a liquid or even a gaseous medium, which enables the disc 1 to be adapted particularly well to the shape of the bottle base, as shown in FIG. 12 . Such an adjustment is particularly advantageous for bottles that have a few large rounded support studs at the edge of the bottle base. The exemplary embodiment of Figures 4a, 4b differs from that of Figures la, lb in that the disc 1 is not glued to the carrier 2, but has button-like projections 15, 16 distributed over the surface on the underside, with which they protrude into corresponding recesses of the carrier 2 is buttoned. Since the disc 1 is made of elastic material, this configuration enables the disc 1 to be replaced when the carrier 2 is still functional.

The exemplary embodiment of FIGS. 5a, 5b corresponds to the exemplary embodiment of FIGS. 2a, 2b except for the division of the inner support surface 5 *, the webs 6 * and the outer support surface 9 *. In this case, only a ring area 6 * is realized with the webs 6a * provided for the positive connection. Also, not every second web merges into a web that widens in the radial direction up to the plate rim, but here the partial surfaces of the outer support surface 9 * are completely separated from the ring region 6 *. This exemplary embodiment is essentially only about a bottle format, so that a ring area 6a * with webs is sufficient. However, as with the other exemplary embodiments, when the bottle is pushed onto the turntable and when pushed down, the inner support surface 5 * and the outer support surface 9 * act like bridge pillars on the bottle, so that the ring surface 6 * is protected. Because of the much more compact shape of the support surfaces 5 *, 9 *, which extends to the full area, in comparison to the finer structure of the webs 6a * in the ring area 6 *, which is matched to the fluting of the bottles, these areas can handle the load when the bottle is pushed on and pushed down much better as the webs 6a * of the ring area 6 *. The geometrical relationships are like this chosen that when pushing the bottles onto the turntable, the inner support surface 5 * grips under the bottle at a time when the bottle is still essentially carried by the outer support surface 9 *.

The main difference between the exemplary embodiment of FIGS. 2a, 2b and that of FIGS. 8a, 8b, 9a, 9b lies in the manner in which the areas with less flexibility are designed. In the exemplary embodiment in FIGS. 8a to 9b, a carrier with a flat contact surface, not shown in the drawing, is assumed. This means that the disc also has a flat back. Instead of the raised areas 13 of the exemplary embodiment in FIGS. 2a, 2b of the carrier 2, in the exemplary embodiment in FIGS. 8a to 9b, flat elements 14a, 14b, 14c are embedded on the underside in the pane 1, which form, as it were, wings of an insert body 14. The insert body 14 can be cast in or clamped in or encapsulated by the disk material. In any case, the insert body 14 is positively connected to the disc 1. It has a fixed attachment for a fixed connection to the carrier and the drive.

Claims

EXPECTATIONS

1.Turning plate for bottles which have a corrugation in the edge region of their base, in a treatment machine in which the bottles can be clamped axially between the rotating plate coupled to a rotary drive and a clamping head, consist of a dimensionally stable support (2) and a disk fastened thereon (1) made of resilient plastic, the contact surface of which has elements (6a, 7a, 8a) for a positive fit with the corrugation of the bottle base, characterized in that the elements for the positive fit have webs extending radially

(6a, 7a, 8a), their width and mutual distance 1 to 2 mm and their height 0.4 to 0.6 times the total height of 2.5 to 5 mm of the disc (1) made of plastic with a Shore hardness from 85 to 99, in particular 94 to 98.

2. Turntable according to claim 1, d a d u r c h g e k e n n z e i c h n t that

Webs (6a, 7a, 8a) have a considerably shorter length than the radius of the disk (1), the disk (1) inside the webs (6a, 7a, 8a) having an at least substantially full-area support surface (5) and outside the The webs (6a, 7a, 8a) have an annular support surface (9) that is full-surface except for radial water channels (9b) that are open to the plate rim.

3. Turntable according to claim 1 or 2, d a d u r c h g e k e n n z e i c h n e t that the

Crosspieces (6a, 7a, 8a) are arranged in at least one closed circular ring or in distributed segments of at least one circular ring.

4. turntable according to any one of claims 1-3, d a d u r c h g e k e n n z e i c h n e t that the

Crosspieces (6a, 7a, 8a) are divided into at least two ring areas (6,7,8).

5. turntable according to claim 4, d a d u r c h g e k e n n z e i c h n t that

Crosspieces (6a, 7a, 8a,) in one ring area (6) have a different width and density than in the other ring area (7,8).

6. Turntable according to claim 4, characterized in that the inner ring region (6) up to a radius of 40 to 50 mm, in particular 45 mm, and the adjoining ring region (7) up to a radius of 60 to 75 mm, in particular 67 , 5 mm, extend.

7. Turntable according to claim 4 or 6, characterized in that every second web (8a) in the outer ring region (8) widens in the radial direction up to the plate edge and with the correspondingly widened neighboring section (9a) the radial, open to the edge water channel (9b ) in the outer support surface (9).

8.Turnplate for bottles in a treatment machine in which the bottles can be clamped axially between the turntable coupled to a rotary drive and a clamping head, consisting of a dimensionally stable support (2) and a disc (1) made of resilient plastic and fastened thereon, the contact surface for a positive connection is established with the roll of the bottle bottom, in particular according to one of claims 1 to 7, characterized in that the disc (1) is at least partially supported on a flexible cushion in the area of its contact surface.

9. turntable according to claim 8, d a d u r c h g e k e n n z e i c h n e t that the

Upholstery made of foam.

10. turntable according to claim 8, d a d u r c h g e k e n n z e i c h n t that

Upholstery made of a rubber-elastic material.

11. turntable according to claim 8, d a d u r c h g e k e n n z e i c h n t that

Upholstery consists of a gel-like or gaseous medium which is encapsulated in a lower-side chamber (14) of the disc (1).

12. Turntable according to one of claims 1 to 7, d a d u r c h g e k e n n z e i c h n e t that the

Washer (1) is supported on areas (13) distributed over the circumference with different flexibility.

13. turntable according to claim 12, characterized in that the support (2) is raised in the areas (13) with less flexibility.

14. Turntable according to claim 13, d a d u r c h g e k e n e z e i c h n e t that flat elements (14a, 14b, 14c) made of a material with less resilience in the back of the disc (1) are embedded in a flat surface of the support in areas with less flexibility.

15. turntable according to claim 12, d a d u r c h g e k e n n z e'i c h n e t that in

Areas with greater flexibility of the carrier (2) have recesses which are filled with flexible, in particular compressible material.

16. Turntable according to one of claims 1 to 15, d a d u r c h g e k e n n z e i c h n e t that a clamping insert (3) is formed in the carrier (2) and driving pins are formed on the underside of the carrier (2).

17. turntable according to one of claims 1 to 16, d a d u r c h g e k e n n z e i c h n e t that the

Disc (1) with projections (la, lb, lc) arranged on the underside engages in corresponding upper-side recesses in the carrier (2).

18. Turntable according to one of claims 1 to 7, d a d u r c h g e k e n n z e i c h n e t that the

Disc (1) has button-like projections (15, 16) distributed on the underside over the surface, with which it can be buttoned into corresponding recesses on the top of the carrier (2).

19. A method for producing a turntable for bottles, which consists of a support made of rigid plastic and a disk attached to it from resilient plastic with a profiled contact surface, using the spraying technique, characterized in that the carrier with locally distributed, flat raised areas Disc is sprayed on.

20. A method for producing a turntable for bottles, which consists of a support made of rigid plastic and a disk attached to it made of resilient plastic with a profiled contact surface, using the spraying technique, characterized in that embedded on the disk with the underside at locally distributed locations flat hard bodies the carrier is sprayed on.