CN1880173A

CN1880173A - Device and method for use in producing packages

Info

Publication number: CN1880173A
Application number: CNA2005100939326A
Authority: CN
Inventors: J·德克斯博格
Original assignee: Tetra Laval Holdings and Finance SA
Current assignee: Tetra Laval Holdings and Finance SA
Priority date: 2005-06-15
Filing date: 2005-08-19
Publication date: 2006-12-20
Anticipated expiration: 2025-08-19
Also published as: RU2008101545A; BRPI0611587A2; WO2006135298A1; BRPI0611587B1; TR200708434T1; CN100548810C; RU2388666C2

Abstract

A device (14) for holding a tube portion (62) during sealing for obtaining an upper transverse seal (64) of the tube, the portion being arranged between the upper and a lower transverse seal (66) of the tube, is provided. It is arranged to control a cross section of a first part (62a) of the portion, by directly contacting it, to have a first extension (72) in a first direction (x) essentially perpendicular to a longitudinal tube direction (67). It is characterized in being arranged to control a cross section of a second part (62b) of the portion, by directly contacting it, to have a second extension (74) in the first direction, the first part being arranged between the lower transverse seal and the second part, the second part being arranged between the upper transverse seal and the first part, and the first extension being larger than the second extension.

Description

The apparatus and method that are used for Production and Packaging

Technical field

The present invention relates to be used for be used for obtaining pipe on a kind of apparatus and method of the section of clamping packaging material tube during the sealing of across seal, this section is located between the last across seal and following across seal of pipe, wherein, this device is arranged to by controlling the cross section of the first of this section with first's direct contact of this section, so that have the first pipe elongation on the first direction longitudinally of pipe being basically perpendicular to.

Background technology

In the packing technique field, for a long time, all be to utilize to pack and transport product for example milk, fruit juice and other beverage.In these packings is to be made by the laminate wrapping material of the close external coating of liquid of sandwich layer that comprises refill layer for example or cardboard and thermoplastic material greatly, wherein, the close coating of the liquid of thermoplastic material be positioned at least sandwich layer formation on the inboard side of packing.Sometimes, this material also comprises for example gas barrier layer of aluminium lamination form.

Usually, make web shaped become pipe, can produce this packing container by the longitudinal overlap edge that seals coiled material.Make pipe load product continuously, then transverse sealing and form shape of cushion.Sealing is carried out along seal area narrow, horizontal, that be spaced apart from each other.In at present known mode, the transverse sealing of pipe is managed longitudinally on the direction and is carried out in a known way in same plane consistently being substantially perpendicular to.Therefore, by the cutting in these seal areas, can be with the enclosure portion of the content thing of pipe from managing separation.This technology by coiled material formation pipe is that itself is well-known, so do not do concrete introduction.

In the known machine that is used for producing similar above-mentioned packing, by pipe being arranged on the transverse sealing of realizing pipe between two relative anchor clamps.Anchor clamps have included seal bar, and pipe is extruded into flat between these seal bar, so that the thermoplastic material of heating in seal area realized sealing.Comprise the product of correct volume in order to ensure the packing of final shape of cushion, each anchor clamps also comprise plate or so-called volume sheet spare (volume flap).When sealing, locate these volume sheet spares with predetermined phase mutual edge distance.In this position, sheet spare is exerted pressure and to its extruding, it is had and predetermined mutual equidistant thickness on the direction perpendicular to the longitudinal axis of pipe to pipe.

In this known method of the across seal that obtains pipe, packing can bear very big stress.Therefore, the undesirable distortion that this can cause tube wall for example forms impression, especially in the zone between the volume sheet spare of the vertical axis extension of pipe.If this distortion appears in the interior zone of seal area, final sealing can be subjected to negative effect.For example, not to have obtained smooth the sealing that constitute by two-layer packing, but obtained to have the sealing of turning of double folding that it means four layers of packing.In some cases, this can be during sealing the formation passage, and then cause the leakage of packing.

Summary of the invention

An object of the present invention is to provide a kind of apparatus and method that are used for the clamping packaging material tube during the transverse sealing packing that is used for obtaining packaging material tube, these apparatus and method have been eliminated any limitation of prior art at least in part.Basic design of the present invention is that the shape of stabilising packaging can avoid gained to seal the undesirable distortion of appearance to reduce the stress of the packing in the seal area, to make during transverse sealing.This can be by realizing in packing is out of shape with the position of control packing distortion.

In hereinafter the content of the discussions and the specific embodiment, the apparatus and method that are used to realize above-mentioned purpose have been defined.

A kind of device, its be used for be used for obtaining pipe on the section of clamping packaging material tube during the sealing of across seal, this section is located between the last across seal and following across seal of pipe, according to the present invention, this device is arranged to by controlling the cross section of the first of this section with first's direct contact of this section, so that have the first pipe elongation on the first direction longitudinally of pipe being basically perpendicular to.This device is characterised in that, it also is arranged to by controlling the cross section of the second portion of this section with the second portion direct contact of this section, so that on first direction, have the second pipe elongation, first is located between the second portion of the following across seal of pipe and this section, second portion is located between the first of the last across seal of pipe and this section, and the first pipe elongation is greater than the second pipe elongation.An advantage of the present invention is, can revise the existing apparatus that is used for clamping packaging material tube during the transverse sealing of pipe, so that embody the method for grip tube of the present invention.For example, can re-construct the volume sheet spare in the above-mentioned known machine, so that in the zones of different of another packing, pipe is applied different effects.

Be arranged to for described section to form a final packaging that limits by last across seal and following across seal.

Cross section by controlling first and second parts on one's own initiative can produce the distortion of having a mind to of packing can not influencing of packing so that obtain above-mentioned first and second elongations in the gained leak free zone.Therefore, can be reduced in the interior stress of seal area of packing significantly, and then can obtain suitable last across seal.On the contrary, if do not produce distortion wittingly in the zone in the seal area outside, uncontrollable distortion can occur on the contrary in seal area, this can cause having sealing of double folding turning.

According to an embodiment, last across seal and following across seal are parallel to each other basically and be substantially perpendicular to first direction.This embodiment can be used to be similar to the production of some mat shapes packings of above-mentioned introduction, can be relatively simply and make these packings cheaply.

According to an embodiment, device comprises two relative volume spares (volume element).They separate one section volume distance and can move relative to each other to have release position and tightening state, and wherein, pipe can be with respect to the motion of volume spare in release position, and in tightening state, the first of the section of pipe is arranged to and can be clamped between the volume spare.In addition, volume spare is arranged in the tightening state with predetermined volume distance and contacts with the outside face of the first of this section of pipe, with the cross section of the first that controls this section.

This volume spare can move relative to each other, and then also can move with respect to pipe.This volume spare can move relative to each other in any suitable manner, for example can be by rotating or motion of translation.According to the type of motion, the volume distance is adjustable.The volume distance is meant the distance between two fixing corresponding point on the corresponding volume spare.

Except volume spare, device of the present invention can be configured to also comprise two relative deformable members.They separate one section deformation distance and can move to have release position and tightening state with respect to pipe, and wherein in release position, pipe can move with respect to deformable member, and in tightening state, the second portion of the section of pipe is arranged to and can be clamped between the deformable member.In addition, deformable member is arranged in the tightening state with the outside face of predetermined deformation distance with the second portion of the section of pipe and contacts, with the cross section of the second portion of controlling this section.

This deformable member can move with respect to pipe, at some embodiment, also can move relative to each other.Similar with volume spare, this deformable member can move with respect to pipe in any suitable manner, for example can be by rotating or motion of translation.In addition, as mentioned above, deformation distance is adjustable.Deformation distance is meant the distance between two fixing corresponding point on corresponding deformation spare.Adopt an advantage of adjustable deformation distance and/or volume distance to be, can more easily device be arranged to contact with managing in tightening state, this is because littler than in release position of deformation distance in the tightening state and/or volume distance.

Can come relatively to be provided with volume spare and deformable member in any suitable manner.Yet according to an embodiment, each deformable member is arranged on in the volume spare cooresponding one.This embodiment has comprised all types of suitable settings, and for example deformable member is integrally formed with, is fixedly connected to, pivotally is connected to or just touches on the volume spare.For example, in the situation that deformable member and volume spare are integrally formed, volume distance and deformation distance can correspondingly change each other.

Structural deformation part in many ways.According to a possible embodiment, each deformable member is arranged to from the outstanding projection of corresponding one the pipe contact surface of volume spare.As indication in the title, the pipe contact surface is being arranged in the tightening state and the contacted surface of pipe of corresponding volume spare.This embodiment means, in some positions, the deformation distance that causes because of deformable member is always less than the volume distance.

Device of the present invention can be configured such that perpendicular to the anamorphic stretching of the deformable member on the direction of the first direction semi-perimeter less than pipe.In other words, deformable member is in the elongation that is parallel on elongation on the across seal direction is being parallel to across seal in flat condition less than pipe the direction.In such an embodiment, can allow deformable member to act on restricted section of pipe goes up to realize required purpose effectively.

According to an embodiment, deformable member forms and makes in tightening state, and the predetermined deformation distance can change along the direction perpendicular to first direction.The cross section that this means deformable member can change along the direction that is parallel to across seal and following across seal.

Last two sections features of being introduced, the promptly limited anamorphic stretching and the deformation distance of variation all help the formation in cross section of the second portion of this section, and wherein this section has second pipe that changes along the direction that is parallel to across seal and following across seal and extends.This is favourable for produce the pipe distortion wittingly in the zone in the seal area outside.

According to one of this device possible embodiment, deformable member is configured such that predetermined intermediate deformation distance is less than predetermined end deformation distance.As name referring, intermediate deformation is apart from the deformation distance between two fixing corresponding intermediate points that refer on the corresponding deformation spare.Correspondingly, the end deformation distance refers to the deformation distance between the fixing corresponding end points of two on the corresponding deformation spare, because each deformable member all has two end points, so can cause two end deformation distance that may equate.An example with deformable member structure of above-mentioned feature is half pincushion shape, and it is very favorable for the present invention.

For clarity sake, should be pointed out that volume spare, deformable member and whole device are in the tightening state during transverse sealing, the sealing before and then be in the release position afterwards.

A kind of method, its be used in order to obtain pipe on the section of clamping packaging material tube during the sealing of across seal, this section is located between the last across seal and following across seal of pipe, according to the present invention, this method comprises by controlling the cross section of the first of this section with first's direct contact of this section, so that have the first pipe elongation on the first direction longitudinally of pipe being basically perpendicular to.The method is characterized in that it also comprises by controlling the cross section of the second portion of this section with the second portion direct contact of this section, so that have the second pipe elongation on first direction.First is located between the second portion of the following across seal of pipe and this section, and second portion is located between the first of the last across seal of pipe and this section, and the first pipe elongation is greater than the second pipe elongation.

The feature of discussing about this device certainly forwards on the method according to this invention.In addition, what should emphasize is that above-mentioned feature can be combined among the same embodiment.

Description of drawings

Below with reference to the schematic figures of the example that has shown the preferred embodiment that the present invention is present, introduce the present invention in more detail.

Fig. 1 a is the transparent view according to the part of device of the present invention.

Fig. 1 b is the transparent view according to another part of device of the present invention.

Fig. 2 a is the front elevation by the packing of producing according to device of the present invention.

Fig. 2 b is the lateral plan of the described packing of Fig. 2 a.

Fig. 2 c is when being held on tightening state by device, along the schematic sectional view of the packing of the line I-I among Fig. 2 a.

Fig. 2 d is when being held on tightening state by device, along the schematic sectional view of the packing of the line II-II among Fig. 2 a.

Fig. 3 a is the lateral plan according to device of the present invention that is in tightening state, wherein is provided with the packing shown in Fig. 2 a and Fig. 2 b.

Fig. 3 b is the lateral plan according to device of the present invention, and wherein this device is not provided with the packing and the state that mediates.

Fig. 3 c has shown the birds-eye view that is in the deformable member in its tightening state.

Fig. 4 is the schematic side elevation that is used for the equipment of transverse sealing.

Fig. 5 is the transparent view of the part of equipment among Fig. 4, has for clarity sake schematically shown packing.

Fig. 6 is the diagram of circuit that has shown the method that is used for transverse sealing.

The specific embodiment

Fig. 1 a has shown heated jig 10, and Fig. 1 b has shown relative anchor clamps 12, and they have formed together according to device 14 of the present invention.Device 14 packings 16 that can be used to produce shown in Fig. 2 a and 2b.Device 14 has different states: the release position shown in Fig. 1 a and Fig. 1 b, the tightening state shown in Fig. 3 a, and the intermediateness that has shown an one example in Fig. 3 b.Release position corresponding to the wherein packaging material tube that hereinafter will more specifically introduce with respect to the unit state of device when mobile.Unit state when similarly, tightening state is held between

anchor clamps

10 and 12 corresponding to a section of pipe wherein.Intermediateness is the general designation that is used for all unit states between release position and tightening state.

Anchor clamps

10 and 12 correspondingly comprise volume spare 18 and 20 separately, and they are the form than the large rectangle plate that is provided with less rectangular plate.Less rectangular plate is set is for bale capacity being carried out the special-purpose purpose of accurate adjustment, this paper will no longer further introduce.In addition, each anchor clamps comprises

deformable member

22 and 24 separately respectively, and they are fixedly connected on the

pipe contact surface

26 and 28 of corresponding volume spare 18 and 20, and is set to from this

contact surface

26 and 28 outstanding projectioies.Can be clear that from figure each deformable member has half pincushion shape, wherein, the respective tube contact surface of plane and volume spare is adjacent, and curved surface is arranged to and can be contacted with packaging material tube.Deformable member is a rigid element, and it can not be out of shape in the normal running of device.

Volume spare separately one section with volume spare on the identical volume distance of shortest distance between two respective point.As hereinafter introducing in more detail, the volume distance is adjustable, and is different between the different conditions of device 14.In tightening state, volume spare is arranged so that their pipe contact surface is parallel to each other and faces with each other.This means that in tightening state the volume distance between any two respective point on the pipe contact surface is identical.Similarly, the deformable member deformation distance that separately shortest distance between two respective point equates on one section curved surface with deformable member.In addition, deformation distance is adjustable, and is different between the different conditions of device 14.In tightening state, shown in Fig. 3 c, deformable member is arranged so that their curved surface faces with each other, and their plane is parallel.This means that in tightening state deformation distance will change being parallel on pipe contact surface and the direction longitudinally perpendicular to pipe along the anamorphic stretching 27 of deformable member 22 and 24.In this specific embodiment, deformable member forms half pincushion, this means in tightening state, and the deformation distance at place is that intermediate deformation distance 29 will be end deformation distance 31 less than the deformation distance in the deformable member edge in the middle of deformable member.

Fig. 4 has schematically shown the equipment 38 of the transverse sealing that is used for packaging material tube 40, and it comprises nine said apparatus 14.For clarity sake, only show a device 14 among the figure.Packing have the character of introducing type at first, promptly are coated with the refill layer of thermoplastic material.Equipment 38 comprises along respectively by two conveyer chains 42 and 44 of driver train 46,48 and 50, the 52 path constant motions that limited.Heated jig 10 is provided with equably along chain 42 continuously, and relative anchor clamps 12 correspondingly are provided with along chain 44.Shown the continuous setting of two such heated jigs among Fig. 5.The pipe 40 that schematically shows with dotted line is configured to receive in the zone between chain 42 and 44, and comes feeding with chain speed.In this zone, each heated jig 10 be arranged to can with relative anchor clamps 12 in corresponding one engage carrying out the transverse sealing of pipe, and in the sealing zone, pipe is cut apart.This joint can be realized with the

engaging gear

54 and 56 in the relative anchor clamps 12 by being included in heated jig 10 respectively.Heated jig also comprises heating pole 58, its be arranged to can with seal receptacle (sealing dolly) 60 mutual actions in being included in relative anchor clamps, to realize transverse sealing.In addition, heated jig comprises and is arranged to move in the fluting in the heating pole 58 59 so that cut the cutting mechanism (not shown) of pipe after sealing.

Fig. 6 has shown the transverse sealing method of equipment 38 operation institute foundations.For this operation is described, make one of them process whole operation circulation of device 14.This circulation begins (see figure 4) from α point, and this method starts from from then on to put from the anchor clamps of described device and moves to β point (steps A).During moving, anchor clamps and device are in the release position.In this stage, anchor clamps neither contact with pipe, and do not contact each other at on-cycle.When through the β point,

anchor clamps

10 and 12 will be shown in Fig. 3 b by

engaging gear

54 and 56 be engaged with each other (step B).Therefore, device just changes to intermediateness from release position.Anchor clamps contact with each other and contact with pipe, and move with pipe.

When anchor clamps engage, volume spare crustal inclination away from each other shown in Fig. 3 b.Along with continuing motion, degree of dip will reduce, and when because volume spare obtains tightening state (step C) and deformable member acquisition tightening state (step D) when making device enter tightening state, degree of dip will be substantially zero, as mentioned above and as shown in Fig. 3 a.By volume spare and deformable member are set like this, but a section of clamping (step e) pipe is to be used for follow-up transverse sealing (step F) as described below and cutting (step G).

As shown in Fig. 2 a, 2b and 5, section 62 (62a+62b) of device clamping have formed a packing 16.Packing 16 has last across seal 64 and following across seal 66, and these seal parallel to each other and perpendicular to the length axes 67 of managing 40.As shown in Fig. 3 a, volume spare is arranged to and can be extended 72 to control its cross section and to make it produce first pipe on the 62a of first of the section of acting on 62 on first direction x.This shows in Fig. 2 c, and it has shown when packing is held on tightening state by device the schematic sectional view along the line I-I among Fig. 2 a.In addition, deformable member is arranged to and can be extended 74 to control its cross section and to make it produce second pipe on the second portion 62b of the section of acting on 62 on first direction x.This shows in Fig. 2 d, and it has shown when packing is held on tightening state by device the schematic sectional view along the line II-II among Fig. 2 a.Can find out easily that from figure volume spare and deformable member can act on the pipeline section 62 that is filled with desired product.Product can act on the tube wall again, causes two cross sections that differ from one another.Cross section shown in Fig. 2 c has the ellipse of " flat ", and the cross section shown in Fig. 2 d has the shape of splayed (dog bone).By this effect, drawing in the collar region 76 and 78 of Fig. 2 a, tube wall is out of shape wittingly by impression spare (not shown).This distortion can make packing stable during transverse sealing, is stressless basically in the zone of carrying out transverse sealing so that be packaged in.Therefore can obtain smooth sealing.

In order to carry out transverse sealing, extruded tube also places it between heating pole and the seal receptacle straightly, with the thermoplastic material in the heated sealant area.Heating pole and seal receptacle be combined finishes two transverse sealings, promptly a packing on seal lower sealing with another part packing.After finishing seal operation, cutting member cuts these two pipes between sealing, to separate and to discharge packing.

After the cutting, along with the continuation campaign of anchor clamps, device 14 state again from fastening state variation to intermediateness, wherein deformable member has obtained intermediateness (step H), volume spare has obtained intermediateness (step I).Afterwards, anchor clamps (step J) separated from one another are to obtain the release position of device once more.Then, loop ends and anchor clamps are got back to the α point.

Therefore, to the β point, device 14 is in its release position from the α point, and to the α point, device at first is in its middle state, then is in its tightening state from the β point, and then is in its middle state.

Above described be to carry out at one of nine of equipment 38 devices.Yet this is for the sake of clarity, and what should see is that all nine devices are running in a similar fashion all.

In the above-described embodiments, realize transverse sealing by heating pole.Yet, can adopt any suitable technology that is used for transverse sealing, for example ultrasonic sealing and high-frequency heating sealing.

Summary before transverse sealing, is filled with desired product naturally as mentioned in the pipe.For example, this can be filled with liquid product such as beverage in leak free pipe.

Although non-apparent in Fig. 6, yet some steps of this method such as step C and D and step H and I can carry out simultaneously.

In addition, should be pointed out that accompanying drawing and not drawn on scale.

The foregoing description only can be considered example.Under the prerequisite that does not depart from design of the present invention, those skilled in the art can recognize, can in many ways described embodiment be made up and change.

As example, volume spare needn't be plate, but can have any suitable shape, as rib shape.Similarly, deformable member needn't form half pincushion, but can have any suitable shape, for example shape of part ellipsoid.

Anchor clamps needn't be located on the conveyer chain as described above, but for example can be located on the revolving wheel.

The present invention can be applicable to the packing of number of different types, and the packing of shape of cushion is exemplary.

At last,

deformable member

22 and 24 needn't be connected on volume spare 18 and 20, and can be for separating.In such an embodiment, volume spare and deformable member can be exerted pressure to the first and the second portion of section respectively individually.

Claims

One kind be used for be used for obtaining pipe on the device (14) of the section (62) of the described packaging material tube of clamping (40) during the sealing of across seal (64), between the last across seal and following across seal (66) that described section is located at described pipe, wherein, described device is arranged to by controlling the cross section of described section first (62a) with described section first (62a) direct contact, so that on the first direction (x) of vertical (67) that are basically perpendicular to pipe, have the first pipe elongation (72), it is characterized in that, described device also is arranged to by controlling the cross section of described section second portion (62b) with described section second portion (62b) direct contact, so that on described first direction, have the second pipe elongation (74), described first is located between the second portion of the following across seal of described pipe and described section, described second portion is located between the first of the last across seal of described pipe and described section, and the described first pipe elongation is greater than the described second pipe elongation.
2. device according to claim 1 (14) is characterized in that, described across seal (64) and the following across seal (66) gone up is parallel to each other basically and be substantially perpendicular to described first direction (x).
3. according to each described device (14) in the claim 1 to 2, it is characterized in that, described device comprises two relative volume spares (18,20), they separate one section volume distance and can move relative to each other to have release position and tightening state, wherein in described release position, described pipe (40) can be with respect to described volume spare motion, in described tightening state, the first (62a) of the section of described pipe (62) is arranged to be clamped between the described volume spare, wherein, described volume spare is arranged in the described tightening state and contacts to control the cross section of described section first with the outside face of the first of the section of described pipe with predetermined volume distance.
4. device according to claim 3 (14), it is characterized in that, described device also comprises two relative deformable members (22,24), they separate one section deformation distance and can move to have release position and tightening state with respect to described pipe (40), wherein in described release position, described pipe (40) can be with respect to described deformable member motion, in described tightening state, the second portion (62b) of the section of described pipe (62) is arranged to be clamped between the described deformable member, wherein, described deformable member is arranged in the described tightening state and contacts to control the cross section of described section second portion with the outside face of predetermined deformation distance with the second portion of the section of described pipe.
5. device according to claim 4 (14) is characterized in that, each described deformable member (22,24) is arranged on in the described volume spare (18,20) corresponding one.
6. according to each described device (14) in the claim 4 to 5, it is characterized in that each described deformable member (22,24) is set to go up outstanding projection from one of the corresponding pipe contact surface (26,28) of described volume spare (18,20).
7. according to each described device (14) in the claim 4 to 6, it is characterized in that described deformable member (22,24) is perpendicular to the semi-perimeter of the anamorphic stretching on the direction of described first direction (x) (27) less than described pipe (40).
8. according to each described device (14) in the claim 4 to 7, it is characterized in that in described tightening state, described predetermined deformation distance changes along the direction perpendicular to described first direction (x).
9. according to each described device (14) in the claim 4 to 8, it is characterized in that predetermined intermediate deformation distance (29) is less than predetermined end deformation distance (31).
One kind be used for be used for obtaining pipe on the method for the section of the described packaging material tube of clamping (step e) during the sealing of across seal, between the last across seal and following across seal that described section is located at described pipe, described method comprises by controlling the cross section of the first of (step C) described section with first's direct contact of described section, so that have the first pipe elongation on the first direction longitudinally of described pipe being basically perpendicular to, it is characterized in that described method also comprises

By controlling the cross section of the second portion of (step D) described section with described section second portion direct contact, so that on described first direction, have the second pipe elongation, described first is located between the second portion of the following across seal of described pipe and described section, described second portion is located between the first of the last across seal of described pipe and described section, and the described first pipe elongation is greater than the described second pipe elongation.
11. method according to claim 10 is characterized in that, described across seal and the following across seal gone up is parallel to each other basically and be substantially perpendicular to described first direction.
12. according to each described method in the claim 10 to 1, it is characterized in that, described method also comprises moves relative to each other to obtain release position (step I+ step J) and tightening state (step B+ step C) two relative volume spares that separate one section volume distance, wherein in described release position, described pipe can be with respect to described volume spare motion, in described tightening state, the first of the section of described pipe is arranged to be clamped between the described volume spare, and described method also comprises described volume spare is arranged in the described tightening state with predetermined volume distance and contacts to control the cross section of described section first with the outside face of the first of the section of described pipe.
13. method according to claim 12, it is characterized in that, described method also comprises moves relative to each other to obtain release position (step H+ step J) and tightening state (step B+ step D) two relative deformable members that separate one section deformation distance, wherein in described release position, described pipe can be with respect to described deformable member motion, in tightening state, the second portion of the section of described pipe is arranged to be clamped between the described deformable member, and described method also comprises described deformable member is arranged in the described tightening state with the outside face of predetermined deformation distance with the second portion of the section of described pipe and contacts to control the cross section of described section second portion.
14. method according to claim 13 is characterized in that, each described deformable member is arranged on one of corresponding the locating in the described volume spare, wherein, makes the motion of one of described volume spare and corresponding deformation spare comprise a common motion.