CN1703312A

CN1703312A - Device for sealing a cover element into a casing part of a packaging body made of composite material

Info

Publication number: CN1703312A
Application number: CNA038254638A
Authority: CN
Inventors: 迪尔克·奥尔
Original assignee: SIG Technology AG
Current assignee: SIG Combibloc Services AG
Priority date: 2002-11-29
Filing date: 2003-09-27
Publication date: 2005-11-30
Also published as: TW200415007A; DE10328411B4; DE10328411A1

Abstract

The invention relates to a device for sealing a cover element into a casing part of a packaging body made of composite material. The aim of the invention is to provide a device of the aforementioned type with which the sealing process should ensure in as few steps as possible, and to enable the device to be easily adapted to different cross-sectional shapes of the casing part. To these ends: an inductor ring (3) is provided; the inductor ring (3) encircles the casing part and is adapted to the course of the periphery of the casing part; the inductor ring (3) has at least two segments (4, 5, 6, 7) that form a ring; the segments (4, 5, 6, 7) can be displaced in the plane of the cover element whereby enabling the cross-sectional area enclosed by the segments (4, 5, 6, 7) to be altered; at least one first joint (10) between two segments (4, 7) is provided so that it is electrically non-conductive, and; the other joints (11) are provided so that, regardless of the relative position of the segments (4, 5, 6, 7) to one another, an electrical contact exists between adjacent segments (4, 5, 6, 7).

Description

Cover piece is sealed to the device in the package assembly of the packaging body of making by composite material

Technical field

The present invention relates to the device in a kind of package assembly that a cover piece is sealed to a packaging body of making by composite material.

Background technology

By the known a kind of device that is used to the packaging body of the composite material system of making of DE 40 14 774 A1, wherein, packaging body has a package assembly and two cover pieces that are inserted on the end face.Composite material comprises the paper of a plastic coatings and the layer an of aluminium lamination or other conductive material system.

This packaging body is made by this way with said apparatus, promptly at first by making the opposed seamed edge of the sheet material of composite material be interconnected to form package assembly by means of a sealing seam.When making package assembly, select shape of cross section arbitrarily.Can be rectangle or circular cross section under the simplest situation, but also can consider other shape of cross section.

Cover piece is inserted in the end of package assembly, and package assembly is supported by a mandrel, and the cross-sectional plane of mandrel is corresponding to the cross-sectional plane of package assembly.Cover piece has had the frame that a wall with package assembly extends abreast.After inserting cover piece, the end regions of package assembly is bent around frame.

Cause on the end, forming a sealing seam by means of the end regions of hot air heating package assembly and by then pushing the zone that has bent in addition, make cover piece be sealed in the end of package assembly.

The shortcoming of this device is to need a plurality of steps in order to form the sealing seam on the end after bending.At first must just can push then by means of the end regions of hot air heating package assembly.Therefore be the device of a relative complex.By adopting hot air heating to produce because the overheated danger that damages composite material in addition.In addition, only after transforming, could process varying cross-section shape bothersomely,, and need to change whole press device because not only need to change mandrel for package assembly.

Summary of the invention

From prior art, the objective of the invention is, device in a kind of package assembly that a cover piece is sealed to a packaging body of being made by composite material is proposed, wherein, seal process should carry out in the least possible step, and this device can be adaptive with the varying cross-section shape of package assembly simply.

By the present invention, this purpose solves by this way, promptly be provided with an inductance loop, this inductance loop surrounds package assembly and adaptive with the curve of the circumference of package assembly, this inductance loop comprises at least two segmentations, these segmentations constitute a ring, these segmentations can be moved in the plane of cover piece, make the cross-sectional plane that surrounds by these segmentations to change, first joint between two segmentations constitutes electrical isolation, make not electrically contact between adjacent segmentation, not producing on first joint that other joint constitutes and the relative position of each segmentation irrespectively produces and electrically contacts between adjacent segmentation.

By the present invention, by being applied in the inductance loop of a high-frequency electric field, the layer in aluminium lamination or other conductive material system in the composite material in sealing seam zone induces eddy current, and this causes heating.Mobility in the time of each segmentation makes and can make inductance loop be converted to an off position from an open position by moving each segmentation.In the time of on being converted to off position, can during heating push cover piece and package assembly.

For the location independent ground that makes high-frequency electric field and inductance loop penetrates inductance loop fully, be necessary to make the joint between the subregion that the high-frequency electrical place is connected on to constitute non-conductive.Other joint between other segmentation must constitute conduction.

Be provided with slide block according to further expansion of the present invention, these slide blocks can be applied in a power of pointing to package assembly by piston.Each segmentation can be fixed on the slide block then, has simplified the replacing of each segmentation when this shape of cross section at package assembly changes.If be provided with four segmentations that can move along mutual vertically disposed line, can push symmetrically so.

Another preferred embodiment in, be provided with four symmetrically arranged pistons that are subjected to pressure, these pistons can impose on the power that one of slide block points to package assembly equably.If these pistons are subjected to pressure by a public pipeline, can be adjusted at constant compression force on the curve that seals seam so especially simply.

Advantageously, slide block is towards a direction pretension that deviates from the package assembly sensing, so when piston no longer was subjected to pressure, each segmentation was left from the package assembly motion automatically.

Preferably use throw of lever for the power transmission from the piston to the slide block, this at first can make apparatus structure mode compactness.If per two throw of levers are hinged on the slide block, guarantee the transmission of failure-free power so.If each piston head is hinged on two different slide blocks by the second end and this two throw of levers of two throw of levers, thereby guarantees that so all slide blocks guarantee all subregions, applied power equably.

In further formation of the present invention, a distance is arranged between the segmentation adjacent with joint on first joint and the location independent ground of each segmentation.Therefore guarantee the failure-free insulation.What may produce in the motion process of each segmentation drivenly especially can not destroy insulation.

If each segmentation is made of a large amount of stacked thin layers mutually according to one preferred embodiment, can on other joint, obtain a large amount of contact surfaces so, if these contact surfaces constitute the contact pin of outside sensing, guarantee special excellent contact so with lowest possible resistance.This resistance also with each segmentation location independent respect to one another.

Description of drawings

Explain the present invention in detail by means of an embodiment below, this embodiment is the preferred embodiment a kind of of apparatus of the present invention.Wherein:

The side cross-sectional view of this device of Fig. 1;

This device of Fig. 2 is along the horizontal sectional view of Fig. 1 hatching II-II;

This device of Fig. 3 is along the horizontal sectional view of Fig. 1 hatching III-III;

Fig. 4 inductance loop is at the birds-eye view of open position;

Fig. 5 inductance loop is at the birds-eye view of off position;

The part of the inductance loop that Fig. 6 opens is along the section drawing of Fig. 4 hatching VI-VI;

The part of the inductance loop that Fig. 7 opens is along the section drawing of Fig. 4 hatching VII-VII;

The part of the inductance loop that Fig. 8 closes is along the section drawing of Fig. 5 hatching VIII-VIII;

The part of the inductance loop that Fig. 9 closes is along the section drawing of Fig. 5 hatching IX-IX.

The specific embodiment

As illustrated in fig. 1 and 2, this device has the base 1 of a circular cross section.At the upside mount pin 2 of base 1, be used for this device is fixed on a suspension gear.Inductance loop 3 is installed in bottom at base 1, and inductance loop is formed (Fig. 2 and 4) by four

segmentations

4,5,6,7.

Segmentation

4,5,6,7 can be surrounded the cross-sectional plane of a unshowned package assembly.The curve of the curve of the seamed edge of the inside sensing of each

segmentation

4,5,6,7 and the circumference of package assembly is adaptive.Wherein, cover piece is inserted in the end face of package assembly like this, makes the frame of cover piece be in the height of inductance loop 3.Therefore inductance loop 3 is positioned at the plane of cover piece.

Each

segmentation

4,5,6,7 is installed in the base 1 movably, makes the cross-sectional plane that is surrounded by them to change.Each

segmentation

4,5,6,7 can be converted to an off position (Fig. 5) from an open position (Fig. 4), and wherein, the cross-sectional plane that surrounds at off position is littler.

First joint 10 that constitutes electrical isolation is arranged between segmentation 4 and 7.Other joint 11 between other segmentation constitutes conduction on the contrary.Being provided with 8, one high-frequency electric fields of contact member in the

adjacency segmentation

4 and 7 of first joint 10 can be connected on these contact members.For high-frequency electric field can penetrate whole inductance loop 3, first joint 10 need be constituted non-conductive, and other joint 11 constitutes conduction.

In addition, each

segmentation

4,5,6,7 has fixed tabs 9, by these fixed tabs each

segmentation

4,5,6,7 via pins 12 is fixed on the slide block 13.Slide block 13 has hole 14 and is installed in the bottom of base 1 movably.Wherein, four slide blocks 13 can move along one first line 15 and one second line 16, and first line 15 and second line 16 constitute about 90 ° angle and be positioned at the plane of cover piece.

Be provided with four pistons 17 in base 1 above the inductance loop 3, these pistons are guided in four cylinder bodies 18.These four cylinder bodies 18 are arranged like this, make these pistons 17 to move along four lines, and these four lines are crisscross from the center of base 1 and begin to extend mutual vertically.Cylinder body 18 has a pressure line 19A respectively on the bottom surface at the center of its sensing base 1, these pressure lines lead to pressure line 19B public, that be arranged on the center of base 1 and be directed upwards towards.

As shown in Figure 3, eight throw of levers 20 are set on the top of base 1.These throw of levers 20 have a first end 21 and the second end 22 and can be around oscillating axle 23 swings.Oscillating axle 23 is perpendicular to the plane of cover piece.The end that piston 17 points to its center that deviates from base 1 leans the second end 22 of throw of lever 20.Each piston 17 leans two ends 22 of two different throw of levers 20.The first end 21 of throw of lever 20 is hinged on the slide block 13 through axle 24, and extend in the hole 14 that axle 24 passes in the slide block 13.Per two throw of levers 20 are hinged on the slide block 13 by a public axle 24 with its first end 21, and the second end 22 of these throw of levers can be pressed by two different pistons 17.By this connection or in contrast between two pistons 17 and slide block 13, pressure is delivered in each

segmentation

4,5,6,7 equably, therefore realize a constant press pressure along the sealing seam.

Be provided with spring 25 in addition, the first end 21 that makes throw of lever 20 by these springs is towards the direction pretension that deviates from package assembly.Slide block 12 is therefore towards this direction pretension.

Shown in Fig. 6 to 9, each

segmentation

4,5,6,7 is made up of mutual stacked thin layer 26.First joint 10 constitutes like this, makes no matter inductance loop 3 is in open mode (Fig. 7) still to be in closed condition (Fig. 9), thereby a distance is arranged abutting against on first joint 10 and between the adjacent segmentation 4 and 7.Guarantee by this distance that continue to exist first joint 10 and inductance loop 3 between

segmentation

4 and 7 location independent constitute electrical isolation, the high-frequency electric field that is connected on the contact member 8 can penetrate inductance loop 3 fully.

Constitute contact pin 27 on other joint 11 on thin layer 26, these contact pin are outwards pointed to (Figure 4 and 5) from package assembly in the plane of cover piece.These contact pin 27 have contact surface 28, and these contact surface inductance loops 3 are in open mode (Fig. 6) and still are in closed condition (Fig. 8) and all recline mutually.Therefore continuing existence with each

segmentation

4,5,6,7 location independent respect to one another on other joint 11 electrically contacts.

For a cover piece is sealed in the package assembly of packaging body, at first cover piece is inserted on the forming core shaft with frame.After this around mandrel moulding package assembly and produce longitudinal joint.This prefabricated packaging body flows to by device of the present invention.

Base 1 is to move through the upper end of the package assembly that has cover piece at the inductance loop 3 of its bottom then.When passing had the base 1 of inductance loop 3, piston was not subjected to pressure.Because by the pretension of spring 25, slide block 13 is outwards pushed, and makes inductance loop 3 be in open position shown in Figure 4.After passing, the frame of cover piece is positioned at the height of inductance loop 3.Then, press for piston 17 by pressure line 19A and 19B.Therefore, the second end 22 of throw of lever 20 is outwards pushed.This causes, and the first end 21 of slide block 13 by throw of lever 20 pushed by the direction of external member outward.Therefore, each

segmentation

4,5,6,7 makes the cross-sectional plane that is surrounded by inductance loop 3 reduce along

first line

15 and 16 relative motions of second line.Therefore inductance loop 3 is converted to off position.

During piston is subjected to pressure, on the contact member 8 of

segmentation

4 and 7, connect a high-frequency electric field simultaneously, therefore the aluminium lamination internal induction in composite material goes out eddy current.This causes aluminium lamination heating, thus the composite material heating, because applied pressure forms a sealing seam between the frame of cover piece and package assembly.Therefore heat and undertaken by being pressed in the public processing step.Cut off high-frequency electric field after finishing seal process, piston 17 no longer is subjected to pressure.Because slide block 12 is by spring 25 pretensions, so slide block 12 outwards leaves package assembly by these spring pressurizeds, so inductance loop 3 is converted to open position.As Figure 4 and 5 as can be known, to be shown in an open position still be that off position all constitutes non-conductive or conduction for first joint 10 and other joint 11 inductance loops.Therefore in 3 down periods of inductance loop, inductance loop can be applied in a high-frequency electric field constantly, and therefore composite material is heated, and pushes simultaneously.This can realize the higher quality seal seam.

Especially learn from Fig. 2, can be simply adaptive with the cross-sectional plane of the change of package assembly by this way by device of the present invention.Only need to remove pin 12 for this reason and each

segmentation

4,5,6,7 is replaced with and the adaptive new segmentation of shape of cross section that changes.The part that this device keeps but can remain unchanged.

Claims

1. the device in the package assembly that a cover piece is sealed to a packaging body of making by composite material, it is characterized in that: be provided with an inductance loop (3), this inductance loop (3) surrounds package assembly and adaptive with the curve of the circumference of package assembly, this inductance loop (3) comprises at least two segmentations (4,5,6,7), these segmentations constitute a ring, these segmentations (4,5,6,7) can in the plane of cover piece, move, make by these segmentations (4,5,6,7) cross-sectional plane of Bao Weiing can change, one is positioned at two segmentations (4,7) first joint (10) between constitutes electrical isolation, make and go up in adjacent sectional (4 at first joint (10), 7) do not produce between and electrically contact, other joint (11) constitutes and each segmentation (4,5,6,7) relative position is irrespectively in adjacent sectional (4,5,6,7) produce between and electrically contact.

2. device according to claim 1 is characterized in that: described inductance loop (3) comprises four segmentations (4,5,6,7).

3. device according to claim 2 is characterized in that: two segmentations (5,7) can be moved facing to package assembly along one first line (15), and two segmentations (4,6) can be moved facing to package assembly along one second line (16) in addition.

4. device according to claim 3 is characterized in that: described first line (15) and second line (16) constitute about 90 ° angle mutually.

5. according to the described device of one of claim 1 to 4, it is characterized in that: this device has some slide blocks (13), and each segmentation (4,5,6,7) is fixed on the slide block (13).

6. according to the described device of one of claim 1 to 5, it is characterized in that: this device has some pistons (17), and these pistons are along deviating from the line guiding that package assembly points to basically.

7. according to claim 6 or 7 described devices, it is characterized in that: be provided with four pistons (17).

8. device according to claim 7 is characterized in that: described piston (17) applies the power of pointing to the package assembly direction can for slide block (13).

9. according to the described device of one of claim 6 to 8, it is characterized in that: described piston (17) can be subjected to pressure.

10. device according to claim 9 is characterized in that: described piston (17) can be subjected to pressure by a public pressure line (19B).

11. according to the described device of one of claim 5 to 10, it is characterized in that: slide block (13) is towards a direction pretension that deviates from package assembly.

12. according to the described device of one of claim 5 to 11, it is characterized in that: slide block (13) is by means of a spring (25) pretension.

13. according to the described device of one of claim 5 to 12, it is characterized in that: this device has some throw of levers (20) that have a first end (21) and a second end (22), first end (21) is hinged on the slide block (13), and throw of lever (20) can be around oscillating axle (23) swing that is located between the described end (20,21).

14. device according to claim 13 is characterized in that: two throw of levers (20) are hinged on the slide block (13) with its first end (21).

15. device according to claim 14 is characterized in that: the first end (21) of throw of lever (20) is hinged on the slide block (13) by means of a public axle (24).

16. according to the described device of one of claim 13 to 15, it is characterized in that: piston (17) leans the second end (22) of throw of lever (20).

17. device according to claim 16 is characterized in that: the second end (22) and this two throw of levers (20) that a piston (17) leans two throw of levers (20) are hinged on two slide blocks (13).

18. according to the described device of one of claim 13 to 17, it is characterized in that: the second end (22) of throw of lever (20) can apply one by piston (17) and deviate from the power that package assembly points to basically.

19., it is characterized in that: have a contact member (8) respectively with the segmentation (4,7) of the adjacent setting of first joint (10) according to the described device of one of claim 1 to 18.

20., it is characterized in that:, locate between the adjacent segmentation (4,7) distance is arranged at first joint (10) with the location independent of each segmentation (4,5,6,7) according to the described device of one of claim 1 to 19.

21. according to the described device of one of claim 1 to 20, it is characterized in that: each segmentation (4,5,6,7) comprises a large amount of stacked thin layers (26) mutually.

22. device according to claim 21 is characterized in that: described thin layer (26) has contact surface (28) in the zone of other joint (11).

23. device according to claim 22 is characterized in that: the contact surface (28) of the thin layer (26) of a segmentation (6,7) adjacent with other joint (11) abuts on the contact surface (28) of thin layer (26) of another segmentation (6,7) adjacent with described other joint (11).

24. according to claim 22 or 23 described devices, it is characterized in that: described contact surface (28) constitutes the contact pin (27) of outside sensing on thin layer (26).