EP3348515A1 - Discharge head for an ejection device of a sealing machine for sealing a container - Google Patents

Abstract

The invention relates to an ejection head (1) for an ejection device (10) of a closing machine for closing a container, comprising a carrier element (2) with a carrier axis (3) and a sliding end (4), and a sliding element (5) for sliding the carrier element (2) along a sliding profile (6) of the closing machine, the sliding element (5) being arranged on the sliding end (4) and acting on the carrier element (2) via the sliding element (5) acting essentially in the direction of the carrier axis (3) ) is transferable. So that the sliding element (5) and the sliding profile (6) are subject to reduced wear, the sliding element (5) is designed as a rotatable rolling element (5), so that the support element (2) in the operating state via the rotatable rolling elements (5) along the Sliding profile (6) can be unrolled.

Description

The invention relates to an ejection head for an ejection device of a closing machine, an ejection device for a closing machine and a closing machine for closing a container according to the preamble of the independent claim of the respective category.

To explain a known ejection head is hereinafter referred to the Fig. 1 and Fig. 2 With reference to which the prior art will be described in more detail. To distinguish the prior art from the present invention, the reference numerals referring to features of known examples are provided with a single decimal, while features of embodiments according to the invention are provided with reference numerals that do not carry apostrophes.

Fig. 1 shows the structure of a known ejection head 1 'and Fig. 2 the known ejection head 1 'from Fig. 1 operational.

According to Fig.1 the ejection head 1 'comprises a carrier element 2' with a carrier axis 3 'and a sliding end 4', and a sliding element 5 'for sliding the carrier element 2' along a sliding profile of the closing machine. The sliding element 5 'is arranged on the sliding end 4' and can transmit a force acting essentially in the direction of the carrier axis 3 'on the carrier element 2'. In the known ejection head 1 ', the sliding element 5' has a rounded surface.

In operation, the ejection head 1 'is connected to an ejection bar. The ejector head 1 'and the ejection bar form part of an ejection device. About the support member, the force can be transmitted to the ejection bar.

Fig. 2 shows the known ejection head 1 'in operation. In this case, the ejector head 1 'slides with the sliding element 5' along a sliding profile 6 'of the closing machine. In order to achieve the two functions of container holding and Behälterabustossens, the sliding profile 6 'has two sections of elevated level. In this case corresponds to a portion of increased level of the sliding profile 6 'of the function of the Behälteriederhaltens, in which the container to be closed for the closing operation held by the ejection device and centered for the lid closure, and the other portion with increased level of the sliding profile 6' of the function the Behälteraustossens, wherein the sealed container is ejected by means of the ejection device from the sealing machine. During container re-holding and Behälterabustossens the ejection head 1 'is moved along the slide 6' and can also rotate about its support axis 3 '. The rounded surface of the slider 5 'performs a sliding movement along the slide 6'. In this case, the rounded surface is lubricated by an oil jet (not shown) so that a lubricating film builds up between the rounded surface and the sliding profile 6 '.

A major disadvantage of the known ejection head is that the movement carried out by him along the slide is basically a sliding movement. This sliding movement leads to increased wear of the sliding profile and the sliding element. In addition, there is the danger that the lubricating film between the sliding profile and the sliding element tears off. Both result in an increased load of the closing machine by vibrations, which has a negative effect on the smoothness and energy consumption of the closing machine. In particular, the increased wear has the consequence that the sliding profile and / or the sliding element must be replaced frequently. In addition, the risk of tearing off the lubricating film requires a complex lubrication.

Based on this prior art, it is therefore an object of the invention to propose an ejection head for an ejection device of a closing machine, an ejection device for a closing machine and a corresponding closing machine for closing a container, which are associated with a reduced wear, a reduced energy consumption, an improved and have simplified lubricity and have an increased smoothness.

The object of the invention solving this object are characterized by the features of the independent claim of each category.

The dependent claims relate to particularly advantageous embodiments of the invention.

The invention thus relates to an ejection head for an ejection device of a closing machine for closing a container, comprising a carrier element with a carrier axis and a sliding end, and a sliding element for sliding the carrier element along a sliding profile of the closing machine, wherein the sliding element is arranged on the sliding and on the Sliding a substantially acting in the direction of the carrier axis force on the carrier element is transferable.

According to the invention, the sliding element is designed as a rotatable rolling element, so that the carrier element can be unrolled in the operating state via the rotatable rolling elements along the sliding profile.

That is, in the context of this invention, the sliding element performs a rolling movement on the sliding profile. In order to carry out the rolling movement, the sliding element can rotate freely relative to the carrier element. This is essentially about two different axes. On the one hand to the carrier axis. On the other hand, also about an axis which is perpendicular to the direction of movement and varies during the movement of the sliding element on the sliding profile. This, in contrast to the prior art, where the sliding member is rigidly connected to the carrier element and performs a pure sliding movement on the sliding profile.

A significant advantage of the inventive ejection head is that due to the rolling movement of the sliding element on the sliding profile of the wear of the sliding element and sliding profile is reduced. As a result, the service life of the ejection head and the sliding profile or the change intervals of the ejection head and the sliding profile can be extended. In addition, an increased running smoothness is achieved by the rolling movement of the sliding element on the sliding profile, which leads to a reduction of the energy consumption of the closing machine and to a reduced loading of the closing machine due to vibrations. Also, the lubricity of the ejection head is improved by the inventive ejection head and simplifies lubrication.

In an embodiment which is very important for practice, the ejection head additionally comprises a bearing element, via which the rotatable rolling element is mounted on the carrier element. Due to the bearing element the lubrication of the rolling element is simplified, the rolling movement of the rolling element is improved, the wear of rolling elements and sliding profile is reduced and the heat development on the rolling element and sliding profile is reduced. In addition, the positioning of the rolling element on the ejection head is improved by the bearing element.

It has proven to be advantageous when the bearing element is detachably connected to the carrier element. As a result, the bearing element can be replaced separately, whereby costs can be reduced at the closing machine.

Further, it is advantageous if the bearing element and / or the rotatable rolling body has a hardened surface, in particular a hard coating. In this way, the wear of the bearing element and / or the rotatable rolling element can be reduced, which has an increased service life of the bearing element and / or the rotatable rolling element result.

It is also advantageous if the bearing element and / or the rotatable rolling elements are made of metal and / or plastic and / or a ceramic material and / or a composite material. This also allows the wear of the bearing element and / or the rotatable rolling element can be reduced, resulting in an increased service life of the bearing element and / or the rotatable rolling element result.

In a further embodiment which is very important for practice, the ejection head additionally comprises a holding element, via which the rotatable rolling element is held in the bearing element. Due to the retaining element an improved securing of the rolling element is achieved at the ejection head. In addition, improved lubricity of the rolling element is achieved.

In practice, it has also proven to be advantageous if the rotatable rolling element is designed as a sphere or an ellipsoid.

As a result, an optimal linear and axial rolling movement of the ejection head is ensured on the slide.

Furthermore, it is advantageous if the ejection head additionally comprises a spring element, via which the rotatable rolling element can be pressed against the sliding profile in the operating state. By means of the spring element, a continuous contact between the rolling element and the sliding profile is ensured. In addition, the contact force can be adjusted via the spring element, with which the rolling element bears against the sliding profile. Also, unevenness of the rolling body and / or the sliding profile can be compensated via the spring element, which has an increased smoothness of the closing machine result.

In practice, it has also proven to be advantageous if the spring element is designed as a spiral spring. This allows a simplified construction of the ejection head.

The present invention further relates to an ejection device for a closing machine for closing a container, comprising an ejection rod and an ejection head according to the invention.

The present invention also relates to a closing machine for closing a container, comprising an ejection device and a slide profile, wherein the ejection device comprises an ejection rod and an ejection head, and the ejection head has a sliding element, which is designed as a rotatable rolling element, and above which the ejection head in Operating state along the sliding profile can be unrolled.

In an embodiment which is very important in practice, the sliding profile has a groove suitable for receiving and / or guiding the rotatable rolling body. As a result, the Hertzian pressure between rolling elements and sliding profile can be reduced. In addition, the rolling movement and guidance of the rolling element can be improved on the sliding profile.

It is also advantageous if the sliding profile has a hardened surface, in particular a hard coating. As a result, the wear of the sliding profile can be reduced or the service life of the sliding profile can be increased.

Furthermore, it has proved to be advantageous if the sliding profile is made of metal and / or plastic and / or a ceramic material and / or a composite material. As a result, the wear of the sliding profile can be reduced or the service life of the sliding profile can be increased.

Preferably, but not necessarily, the closing machine can additionally comprise a sliding profile carrier with which the sliding profile is detachably connected. The sliding profile can thus be exchanged separately at the closing machine, which results in a cost reduction of the closing machine.

Fig. 1

einen bekannten Ausstosskopf aus dem Stand der Technik,

Fig. 2

den bekannten Ausstosskopf aus Fig. 1 im Betrieb an einem Gleitprofil,

Fig.3

ein Ausführungsbeispiel eines erfindungsgemässen Ausstosskopfes,

Fig.4

ein Ausführungsbeispiel einer erfindungsgemässen Ausstossvorrichtung mit einer Ausstossstange und einem Ausstosskopf nach Fig.3,

Fig.5

den erfindungsgemässen Ausstosskopf nach Fig. 3 im Betrieb an einem Gleitprofil und

Fig.6

eine Detailansicht X nach Fig. 5.

In the following the invention will be explained in more detail with reference to the schematic drawings. Show it:

Fig. 1

a known ejection head from the prior art,

Fig. 2

the known ejection head Fig. 1 in operation on a sliding profile,

Figure 3

an embodiment of an inventive ejection head,

Figure 4

an embodiment of an inventive ejection device with an ejection rod and an ejection head according to Figure 3 .

Figure 5

after the ejection head according to the invention Fig. 3 in operation on a sliding profile and

Figure 6

a detailed view X after Fig. 5 ,

As already mentioned, show Fig. 1 and Fig. 2 the prior art and have already been explained in detail at the outset, so that can be dispensed with further discussion here.

Fig. 3 shows a first embodiment of an inventive ejector head, which is hereinafter referred to collectively with the reference numeral 1. The in the Fig. 3 to Fig. 6 used reference numerals do not carry a single quote, since these figures relate to embodiments of the present invention. As already mentioned above, only the reference numbers of the Fig. 1 and 2 an apostrophe, since these refer to the known prior art.

According to Figure 3 the ejection head 1 comprises a carrier element 2 with a carrier axis 3 and a sliding end 4, and a sliding element 5 for sliding the carrier element 2 along a sliding profile of the closing machine. The sliding element 5 is arranged on the sliding end 4 and can transmit a force acting essentially in the direction of the carrier axis 3 to the carrier element 2. The sliding element 5 is designed as a rotating rolling element in the form of a sphere. The ejection head 1 additionally comprises a bearing element 7 and a holding element 8, via which the rotatable rolling element 5 is mounted or held on the carrier element 2.

Fig. 4 shows the ejector 1 from Fig. 3 and an ejection rod 9 to which the ejection head 1 is detachably connected. The ejection head 1 and the ejection rod 9 form part of an ejection device 10 of a closing machine, not shown, for closing containers. Over the ejector head 1, a force can be transmitted to the ejection rod 9 during operation. The ejection device 10 is slidably mounted in a receptacle 11 of the closing machine along its longitudinal axis 12 and rotatably supported about the longitudinal axis 12. The receptacle 11 is in turn rotatably supported via receiving bearings (not shown) in a holding device (not shown) of the closing machine.

At the upper end of the receptacle 11, a first ring gear 14 is provided, which cooperates in operation with a second ring gear (not shown) of the closing machine. About the first ring gear 14, the receptacle 11 and the ejector 10 can be rotated in self-rotation. The movement of the receptacle 11 and the ejection device 10 along the sliding profile 6, however, is generated via the holding device of the closing machine.

Fig. 5 shows the ejector 10 with the ejector head 1 after Fig. 3 operational. In this case, the ejection head 1 slides with the rotating rolling element 5 along the sliding profile 6 of the closing machine, which is connected to a sliding profile carrier 15 of the closing machine. In order to achieve the two functions of container holding and Behälterabustossens, the sliding profile 6 'has two sections of elevated level. In this case corresponds to a portion of increased level of the sliding profile 6 'of the function of the Behälteriederhaltens, in which the container to be closed for the closing operation held by the ejection device and centered for the lid closure, and the other portion with increased level of the sliding profile 6' of the function the Behälteraustossens, wherein the sealed container is ejected by means of the ejection device from the sealing machine. During container re-holding and Behälterabustossens the ejection head 1 is moved along the slide 6 and can also rotate about the longitudinal axis 12 of the ejector 10. The rotating rolling element 5 performs a rolling motion on the sliding profile 6. In order to carry out the rolling movement, the rotating rolling element 5 can rotate freely relative to the carrier element 2 and thereby rotate about essentially two different axes. On the one hand to the support axis 3. On the other hand also about an axis which is perpendicular to the direction of movement and according to the Movement direction during the movement of the rotating rolling element 5 on the slide 6 varies. This, in contrast to the prior art, where the sliding member 5 'is rigidly connected to the support member 2' and performs a pure sliding movement on the sliding profile.

Fig. 6 shows a detail view X after Fig. 5 , From this it is apparent that the sliding profile 6 for receiving and / or guiding the rotatable rolling body 5 has a suitable groove or groove 16. Due to the groove or groove 16, the Hertzian pressure between the rotating rolling element 5 and the sliding profile 6 can be reduced. In addition, the rolling movement and guidance of the rotating rolling element 5 on the sliding profile 6 can be improved.

Claims (15)

An ejection head (1) for an ejection device (10) of a closing machine for closing a container, comprising a carrier element (2) with a carrier axis (3) and a sliding end (4), and a sliding element (5) for sliding the carrier element (2) along a sliding profile (6) of the closing machine, the sliding element (5) being arranged on the sliding end (4) and a force acting essentially in the direction of the carrier axis (3) being transferable to the carrier element (2) via the sliding element (5), characterized in that the sliding element (5) is designed as a rotatable rolling body, so that the carrier element (2) can be unrolled in the operating state via the rotatable rolling body (5) along the sliding profile (6). An ejection head according to claim 1, wherein the ejection head (1) additionally comprises a bearing element (7) via which the rotatable rolling element (5) is mounted on the carrier element (2). An ejection head according to claim 2, wherein the bearing element (7) is detachably connected to the carrier element (2). An ejection head according to claim 2 or 3, wherein the bearing element (7) and / or the rotatable rolling body (5) has a hardened surface, in particular a hard coating. Ejecting head according to one of claims 2 to 4, wherein the bearing element (7) and / or the rotatable rolling body (5) made of metal and / or plastic and / or a ceramic material and / or a composite material. An ejection head according to one of claims 2 to 5, wherein the ejection head (1) additionally comprises a holding element (8), via which the rotatable rolling body (5) is held in the bearing element (7). An ejection head according to any one of claims 1 to 6, wherein the rotatable rolling element (5) is a sphere or an ellipsoid. Ejecting head according to one of claims 1 to 7, wherein the ejection head (1) additionally comprises a first spring element, via which the rotatable rolling body (5) can be pressed in the operating state against the sliding profile (6). A dispensing head according to claim 8, wherein the first spring element is formed as a spiral spring. An ejection device for a closing machine for closing a container, comprising an ejection rod (9) and an ejection head (1) according to one of claims 1 to 9. A closing machine for closing a container, comprising an ejection device (10) according to claim 10 and a slide profile (6), said ejection device (10) comprising an ejection rod (9) and an ejection head (1) according to any one of claims 1 to 9, and Exhausting head (1) has a sliding element (5), which is designed as a rotatable rolling body (5) over which the ejection head (1) in the operating state along the slide profile (6) can be unrolled. Closing machine according to claim 11, wherein the sliding profile (6) has a groove (16) suitable for receiving and / or guiding the rotatable rolling element (5). Closing machine according to claim 11 or 12, wherein the sliding profile (6) has a hardened surface, in particular a hard coating. Closing machine according to one of claims 11 to 13, wherein the sliding profile (6) made of metal and / or plastic and / or a ceramic material and / or a composite material. Closing machine according to one of claims 11 to 14, wherein the closing machine additionally comprises a slide profile carrier (15), and the slide profile (6) is detachably connected to the slide profile carrier (15).

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