CN101734383A

CN101734383A - Packaging unit for producing sealed packages of a food product

Info

Publication number: CN101734383A
Application number: CN200910127468.6A
Authority: CN
Inventors: D·安扎尔迪; A·尼科利
Original assignee: Tetra Laval Holdings and Finance SA
Current assignee: Tetra Laval Holdings and Finance SA
Priority date: 2008-11-24
Filing date: 2009-03-06
Publication date: 2010-06-16
Anticipated expiration: 2029-03-06
Also published as: JP2010120699A; EP2189375B1; JP5525176B2; ATE532710T1; CN101734383B; EP2189375A1; ES2377235T3

Abstract

A packaging unit for producing sealed packages of a food product pourable into a tube, comprising a duct for pouring food product into tube, a flange housed within tube and having holes through which food product flows, and connecting means for constraining duct to flange and comprising two coupling elements fixed to and detachable from duct and flange in a first and in a second configuration, and locking element movable with respect to coupling elements in the first configuration along a path between a first position in which coupling elements are kept in first configuration, and a second position in which coupling elements can reach the second configuration; unit has constraining means interposed between coupling elements and locking element at a third position; locking element is movable with respect to coupling elements crosswise to path at third position between a fourth position in which first constraining means prevent locking element from moving along path, and a fifth position in which locking element can move along path.

Description

Be used to produce the seal-packed packaging facilities of food

Technical field

The present invention relates to be used to produce dumpable seal-packed packaging facilities of going into the food in the packaging material tube.

Background technology

Numerous food product, such as, fruit juice, the milk through pasteurize or UHT (uht), wine, tomato sauce etc. are sold in the packing that the sterilization packaging material is made.

A representative instance of this class packing is the parallelepiped-shapepackage package that is used for liquid or pourable food that is known as aseptic aseptic bag (Tetra BrikAseptic) (registered trade mark (RTM)), and this packing is made by folding and sealing layer pressure zone packing.

This packing have multiple-structure, and this multiple-structure consists essentially of: be used for the basic unit of rigidity and intensity, it can be limited by fibrous material layer (for example, paper) or mineral filled polypropylene material layer; And a plurality of heat seal plastic layers that cover the both sides of basic unit, for example polyethylene foil.

Be used for the product of long term storage (such as, under the situation of aseptic packaging UHT milk), packing also comprise gas and photoresistance barrier material layer, for example, aluminium foil or ethyl vinyl alcohol (EVOH) film, it is added on the heat seal plastic layer, and another heat seal plastic layer of inner face that is formed the final contact food of this packing again covers.

As everyone knows, this being packaged on the fully-automatic packaging equipment produced, and on this fully-automatic packaging equipment, utilizes feeding sheet materials (web-fed) packing to form continuous pipe; In this packaging facilities, this sheet of packing meterial is carried out sterilization, for example,, for example remove this chemical bactericide from package material surface subsequently by heating and evaporation by applying chemical bactericide (such as, superoxol).

The sterilization sheet material is maintained in the osed top gnotobasis and is folded into cylindrical and longitudinally seals to form and manages.

This pipe is parallel to its axis to be supplied with at vertical direction, loads continuously with food sterilization or the process aseptic process, and carries out heat seal to form the form pillow packs box that is connected to pipe by the transverse sealing bar in the cross section of equidistant apart.

Such packaging facilities is known: it comprise be used for that food is transported to the conduit in the pipe downwards and be contained in pipe coaxially interior and be provided with the flange of a plurality of through holes.

Or rather, the heat seal in each cross section upwards aspirates a certain amount of food, and these food pass the hole by flange limit.In this way, flange is controlled by the heat seal in each cross section upwards flowing of the food of suction.

Flange and conduit are connected to each other via lockout mechanism.

In this industry, need to avoid owing to upwards the flow vibration that caused and stress of food makes flange unclamp from conduit to cause the amount that is loaded into the food in the packing uncontrollable.

In this industry, also need to avoid this vibration and stress to break lockout mechanism and cause some parts of these lockout mechanisms may fall in the pipe and remain to risk in the sealed package.

Summary of the invention

The object of the present invention is to provide a kind of dumpable seal-packed packaging facilities of going into the food in the packaging material tube that is used to produce, its be designed to simple and direct, mode satisfies at least one requirement in the above-mentioned requirements cheaply.

According to the present invention, provide a kind of dumpable seal-packed packaging facilities of going into the food in the packaging material tube that is used to produce according to claim 1.

Description of drawings

Referring to accompanying drawing, will preferred unrestricted embodiment of the present invention be described in illustrational mode, in the accompanying drawings:

Fig. 1 shows the transparent view that is used to produce the packaging facilities of dumpable packing of going into the food in the packaging material tube according to of the present invention, for the sake of clarity, has removed some parts;

Fig. 2 to Fig. 5 shows and is used for by using the attaching parts group to come the transparent view of corresponding steps of the operation of the filling conduit of connection diagram 1 equipment and flange;

Fig. 6 and Fig. 7 show the view of more high range of the attaching parts group of the Fig. 2 to Fig. 5 that is in first operating position and second operating position respectively;

Fig. 8 is the cross section along the line VIII-VIII of Fig. 7;

Fig. 9 illustrates the Fig. 2 that is in the 3rd operating position and the attaching parts group of Fig. 7;

Figure 10 illustrates the cross section of the line X-X in Fig. 9;

Figure 11 illustrates the attaching parts group of the Fig. 2 to Figure 10 that is in the 4th operating position;

Figure 12 is the cross section of the line XII-XII in Figure 11.

Figure 13 illustrates the attaching parts group of the Fig. 2 to Figure 12 that is in the 5th operating position;

Figure 14 is the cross section of the line XIV-XIV in Figure 13;

Figure 15 shows the attaching parts group of the Fig. 2 to Figure 14 that is in the 6th operating position; And

Figure 16 is the backplan of the attaching parts group of Fig. 2 to Figure 15, for the sake of clarity, has removed some parts.

The specific embodiment

Reference numeral 1 expression among Fig. 1 is used for producing the seal-packed whole packaging facilities of food continuously from sheet of packing meterial 3, and sheet of packing meterial 3 launches and supplies with along forming the path from spool.

Equipment 1 is preferred produces the dumpable food sealed package (shown in Figure 1) of (such as through the milk of pasteurize or UHT, fruit juice, wine etc.).

Equipment 1 also can be produced when Production and Packaging dumpable and at the sealed package of the food of package encapsulation after coagulation.An example of this food is the part in the cheese, and it melts when Production and Packaging and solidifies after packing is sealed.

These packing have multiple-structure, and this multiple-structure consists essentially of: be used for the basic unit of rigidity and intensity, it can be limited by the fibrous material layer (for example, paper) or the mineral-filled polypropylene material bed of material; And a plurality of heat seal plastic layers that cover the both sides of basic unit, for example polyethylene foil.

More specifically, sheet material 3 is by the roller of guiding elements (not shown)-for example or similar component-along forming that the path is supplied with and successively through being used for the first station (not shown) to the sheet applications sealing band; Be used to form the second station (not shown) of packaging material tube 10; And be used for carrying out thermosealed the 3rd station (not shown) along 10 pairs of longitudinal sealings of pipe.Especially, pipe 10 has axis A.

Equipment 1 also comprises: filling device 12, and it is used for pouring in the packaging material tube 10 dipping down continuously through sterilization or through the food of aseptic process; And, pawl formula forming assembly (not shown), it is used for clamping, seal and cut pipe 10 to form a series of packing along isolated cross section equidistantly.

More specifically, filling device 12 comprises conduit 20, flange 25 and is used for connecting duct 20 and the bindiny mechanism 35 of flange 25.

Conduit 20 has trunk portion 21 and end 24, and trunk portion 21 is contained in the pipe 10 and along axis A extends, and end 24 is projected into the outside of pipe 10 and defines food inlet opening 23 from trunk portion 21.

Referring to Fig. 2 to Fig. 5, flange 25 extends symmetrically around axis A, is contained in the trunk portion 21 of managing in 10 and centering on conduit 20 coaxially coaxially.

Especially, flange 25 comprises two

axial end portions

26,27 and places trunk portion 28 between the

end

26,27 vertically about axis A.

End 26 is positioned at trunk portion 28 tops and is cylindrical.

End 27 is positioned at trunk portion 28 belows and defines a pair of groove 29, and this extends along the respective horizontal axis that is orthogonal to axis A about axis A toward each other and mainly to groove 29.

Each groove 29 consists essentially of main body cylinder shape partial sum inlet end, and the inlet end is crooked and intersects with trunk portion.

In addition, each groove 29 opens wide on the opposite side of itself and axis A.

26 to the end 27 from the end, and trunk portion 28 comprises top section 30 and the cylindrical bottom portion section 31 that is shaped as truncated cone.

Top section 30 is towards end sections 26 convergents and comprise around axis A and the isolated a plurality of through holes 22 in equal angles ground.

The diameter of bottom stage 31 is greater than the diameter of

end

26,28.

The heat seal of managing 10 cross sections upwards and pass a certain amount of food of hole 22 suctions of flange 25.In this way, hole 22 control these amount of food of upwards being aspirated flows.

Bindiny mechanism 35 is releasable and advantageously comprises:

-two

connection element

40a, 40b, it can be about trunk portion 21 motion between first structure and second structure of conduit 20, in first structure,

connection element

40a, 40b are connected on trunk portion 21 and the flange 25 (Fig. 5) securely, and in second structure,

connection element

40a, 40b can separate with trunk portion 21 and flange 25 (Fig. 3);

-locking member 50, its can about be arranged at first the

structure connection element

40a, 40b along path P (Fig. 6, Fig. 7, Fig. 9, Figure 11, Figure 13 and Figure 14) at position P ₁(Fig. 6) with position P ₂Motion (Figure 15), at position P1, this locking member 50 makes

connection element

40a, 40b remain in first structure, at position P ₂,

connection element

40a, 40b can be freely towards described second tectonic movements; And

-the first constraint device, it is used at position P ₃Locking member 50 is tied to

connection element

40a, 40b last (Fig. 7 and Fig. 8), position P ₃Be arranged in position P along path P ₁With P ₂Between; Locking member 50 is at position P ₃Can be about

connection element

40a, 40b and path P across and at a plurality of first blocking positions and position Q ₂(Fig. 8) motion, at first blocking position, first the constraint device prevent locking member 50 along path P towards position P ₂Motion is at position Q ₂, locking member 50 can be along path P freely towards position P ₂Motion.

Especially, locking member 50 is at position P ₃The place moves along the line Y that intersects with path P with respect to

connection element

40a, 40b.

First blocking position corresponding to locking member 50 at position P ₃Remove position Q along what line Y can arrive ₂Outside all positions.

In addition, equipment 1 is included in position P ₄Dispose the second constraint device between

connection element

40a, 40b and locking member 50, position P ₄Place position P along path P ₃With P ₂Between.

Locking member 50 also can be at position P ₄The place is parallel to line Y at a plurality of second blocking positions and position Q with respect to

connection element

40a, 40b ₄Between the motion, at second blocking position, second the constraint device prevent locking member 50 along path P towards position P ₂Motion is at position Q ₄, locking member 50 can be along path P freely towards position P ₂Motion (Figure 12).

Second blocking position corresponding to locking member 50 at position P ₃The place removes position Q along what line Y can arrive ₄Outside all positions.

Especially, position Q ₂, Q ₄Spaced apart along the line that is parallel to line Y.More specifically,

connection element

40a, 40b define

corresponding projection

48,49, and locking member 50 defines a portion (seat) 58,59.

The first constraint device comprises projection 49 and seat portion 59, and the second constraint device comprises projection 48 and seat portion 58.

When locking member 50 is in position Q along line Y ₂With position P along path P ₃The time, projection 49 is contained in the portion 59 (Fig. 7 and Fig. 8) with a gap.

Different is, when locking member 50 be in first blocking position of line Y blocking position and along the position P of path P ₃The time projection 49 cooperate with locking member 50 (or cooperate).

When locking member 50 is in position Q along line Y ₄With position P along path P ₄The time, projection 48 is contained in the portion 58 (Figure 11 and Figure 12) with a gap.

Different is, when locking member 50 be in second blocking position of line Y blocking position and along the position P of path P ₄The time, projection 48 is cooperated with locking member 50.

Each

connection element

40a, 40b are configured as the closed annular that extends around respective axis B.

In addition, each

connection element

40a, 40b consist essentially of:

-

cylindrical part

41a, 41b, it extends along the axis that is orthogonal to axis A and relevant axis B;

-with

relevant portion

41a, 41b about the relative part 42a of relevant axis B, 42b; And

C shape part 43a, the 44a of-two relative bendings; 43b, 44b, they are oriented to make its recess towards

appropriate section

41a, 42a; 41b, 42b.

Especially, the corresponding grooves 29 of the end 27 of

part

41a, 41b faying flange 25, and comprise corresponding end-

stop

45a, 45b.

When

connection element

40a, 40b engaged corresponding grooves 29, end-

stop

45a, 45b were abutted against the corresponding surface of end 27.

From

various piece

43a, 43b to

corresponding part

44a, 44b,

cavity

47a, 47b that

various piece

42a, 42b consist essentially of

tooth

46a, 46b and defined by curved profile.

Especially, it is outstanding from

corresponding part

42a, 42b that

tooth

46a, 46b are arranged essentially parallel to relevant axis B.

In addition,

various piece

43a, 43b comprise

groove

39a, 39b (Fig. 2, Fig. 7, Fig. 8, Figure 11, Figure 13 and Figure 15), so that avoid

part

41a, 41b and relevant groove 29 interferences when

connection element

40a, 40b engage relevant groove 29.

The part 44a from connection element 40a on the sidepiece relative with axis B is outstanding for projection 48.

Projection 49 section from part 42b, the 44b of cutting apart connection element 40b on the sidepiece relative with axis B is outstanding.

Preferably,

projection

48,49 is towards the respective side convergent relative with corresponding axis B.

Therefore,

projection

48,49 staggers along path P.

Especially, projection 49 is positioned at the upstream of projection 48 along path P.

Connection element

40a, 40b are vertical (Fig. 5, Fig. 6, Fig. 7, Fig. 9, Figure 11, Figure 13 and Figure 15) in first structure basically

About this first structure, axis B and axis A quadrature, and

part

42a, 42b are positioned at

appropriate section

41a, 41b below.

To

appropriate section

42a, 42b,

part

43a, 43b descend from

part

41a, 41b.

To

relevant portion

41a, 41b,

part

44a, 44b rise from

part

42a, 42b.

Because

connection element

40a, 40b are the vertical facts in first structure basically, being abutted against of

part

43a, 43b and end 27 prevents that

corresponding connection element

40a, 40b and the end 27 of flange 15 from separating.

In addition,

tooth

46a, 46b and

chamber

47a, 47b be towards the trunk portion 21 of conduit 20, and define the seat portion 38 (Figure 16) that the trunk portion 21 by conduit 20 engages securely.

More accurate theory, seat portion 38 is shaped as the circular arc about axis A symmetry, and is limited by tooth 46a and chamber 47a in its first side, is limited by tooth 46a and chamber 47b about the second relative side of axis A with first side at it.

Connection element

40a, 40b are level (Fig. 3) in second structure basically.

About second structure, the axis B A that parallels to the axis, part 41a, 41B place between part 42a, the 42b, and

part

43a, 43b intersect with axis A.

In this way, when

connection element

40a, 40b along with Fig. 2 in the represented side of arrow when moving with respect to end 27 in the opposite direction,

part

43a, 43b not with end 27 interferences, and

Connection Element

40a, 40b can be from the end 27 freely separate.

Locking member 50 is shaped as elongated closed annular and comprises integratedly:

-straight line portion 51 slides on first profile of the more close relevant axis B of corresponding connection element 40a, the 40b of straight line portion 51 in being arranged at first structure;

-part 52, its relative with part 51 and with second profile relative that is arranged at

corresponding connection element

40a, 40b in first structure with corresponding first profile on slide; And

C shape part 53a, the 53b of-two relative bendings, they are oriented to make its recess towards

appropriate section

51,52.

Part 52 comprises the C shape section 54 of two bendings, and they are oriented to make second profile of its recess towards part 51 and

corresponding connection element

40a, 40b.

In addition, part 52 comprises the linear portion 55 between the section of placing 54, and section 54 defines a

portion

58,59.

Especially,

connection element

40a, 40b are what forge, thereby reduce may occur in

sweep

43a, 43b, 44a, 44b the risk of crackle.

Now be in first structure (Fig. 5) and the locking member 50 and be in position P along path P with

connection element

40a, 40b ₁(Fig. 6) begin to come the operation of description equipment 1.

In this case, bindiny mechanism 35 makes the trunk portion 21 of conduit 20 be connected with flange 25 securely.

In brief, sheet material 3 is supplied with along forming the path, and manages 10 and form and loaded by conduit 20 usefulness food.

Afterwards, pawl formula forming assembly clamp along isolated cross section equidistantly and sealed tube 10 to form a series of packing.

The heat seal in each cross section of pipe 10 is upwards towards a certain amount of food of flange 25 suctions.

This amount of food is passed hole 22 and produce stress and vibration on

connection element

40a, 40b and locking member 50.

This vibration and stress with respect to

connection element

40a, 40b along path P and be parallel to line Y and move locking member 50.

Because these vibrations and stress are this facts of ccasual, this vibration and stress very can not be position Q ₂When the place is parallel to line Y and moves locking member 50 at position P ₃The place along path P towards P ₄Move this locking member 50.

On the contrary, these the vibration and stress may move locking member 50 along line Y in a blocking position place in first blocking position, at the first blocking position place, projection 49 is abutted against C shape part 53a, thus prevent locking member 50 along path P towards position P ₃Motion.

Therefore, locking member 50 remains on position P ₁, and

connection element

40a, 40b remain on first structure (Fig. 5).

Vibration and stress while at position P ₃With position Q ₂Along line Y and along path P towards position P ₂Under the situation of mobile locking member 50, projection 49 is contained in a gap in the seat portion 59 that path P is moved, and locking member 50 remains on position P along path P ₃With P ₄Between.

Vibration and stress continuation with respect to

connection element

40a, 40b along path P at position P ₃With P ₄Between and be parallel to line Y and move locking member 50.

Because these vibrations and stress are this facts of ccasual, these vibrations and stress very can not be position Q ₄When the place is parallel to line Y and moves locking member 50, at position P ₄The place along path P towards position P ₂Move this element.

On the contrary, these vibrations and stress may a blocking position in second blocking position be parallel to line Y and move locking member 50, and at the second blocking position place, projection 48 is abutted against C shape part 53b (Figure 10), thus prevent locking member 50 along path P towards position P ₂Motion.

When equipment 1 stops, the operator can be easily from the trunk portion 21 of conduit 20 and flange 25 bindiny mechanism 35 separately.

In fact, be in first structure (Fig. 5) and the locking member 50 from

connection element

40a, 40b and be in position P ₁(Fig. 6) beginning, the operator at first pushes position P with locking member 50 ₃And along line Y locking member 50 is moved to position Q then ₂

In this stage, the operator is further towards position P ₄Promote locking member 50, make projection 49 be contained in a gap in the seat portion 59 that path P is moved

As locking member 50 close position P ₄The time, the operator moves to position Q along line Y with locking member 50 ₄And along path P towards position P ₂Promote locking member 50.

In this way, projection 48 is contained in a gap in the seat portion 58 that path P is moved and can easily shifts locking member 50 onto position P ₂

When locking member 50 is in position P ₂The time,

connection element

40a, 40b can arrive second structure (Fig. 3) and can be easily from the trunk portion 21 of conduit 20 and flange 25 separately.

Equally, the operator can easily make the trunk portion 21 of conduit 20 be connected with flange 25 by using bindiny mechanism 35.

In fact, be in second structure (Fig. 2) and separate from

connection element

40a, 40b with the trunk portion 21 and the flange 25 of conduit 20, the operator at first makes

part

41a, 41b be bonded in the corresponding grooves 29, be abutted against around the surface (Fig. 3) of the end 27 of corresponding recesses 29 up to end-

stop

45a, 45b, arrive first structure (Fig. 4) about

relevant portion

41a, 41b

rotation connection element

40a, 40b up to connection element 40a, 40 then.

In this stage, locking member 50 is in position P ₂(Fig. 4).

Then, the operator is towards position P ₄ Mobile locking member 50 is parallel to line Y and moves locking member 50 up to position Q ₄, and with locking member 50 from position P ₄Move to position P ₃

At last, the operator at first is parallel to line Y and moves locking member 50 up to position Q ₂And then up to position P ₁(Fig. 5).

In this stage, but

connection element

40a, 40b are locked and operating equipment 1 securely by locking member 50 in first structure.

By above description, will become obvious according to the advantage of equipment 1 of the present invention.

Especially, only be in position Q simultaneously along line Y at locking member 50 ₂With position P along path P ₃Situation under, and only be in the position Q that is parallel to line Y simultaneously at locking member 50 ₄With position P along path P ₄Situation under, locking member 50 just can be along path P from position P ₁Move to position P ₂

Owing to upwards flowing of food produces and act on the combination that vibration in the bindiny mechanism 35 and stress can not cause this motion of locking member 50 very much, so bindiny mechanism 35 can not unexpectedly separate with the trunk portion 21 and the flange 25 of conduit 20 very much.

Similarly, this vibration and stress can not be broken locking member 50 or

connection element

40a, 40b very much, and some parts that has therefore reduced them to a great extent may drop in the pipe 10 and remain on packs interior risk.

Especially, because

connection element

40a, 40b are shaped as the fact of corresponding closed ring, prevented that the potential crack among these connection elements 40a, the 40b from causing their fragment to fall in the pipe 10.

At last, when equipment 1 stops, can by the user along path P easily with locking member 50 from position P ₁Move to position P ₂With from position P ₂Move to position P ₁, therefore, can be by operator easily

mobile connection element

40a, 40b between first structure is constructed with second.

Obviously, under the situation of the category that does not depart from appended claims and limited, can make a change equipment 1.

Especially,

connection element

40a, 40b can comprise a plurality of

corresponding projections

48,49.

Claims

1. one kind is used for producing dumpable seal-packed packaging facilities (1) of going into the food of packaging material tube (10), comprises;

-be used for described food is poured into the conduit (20) of described pipe (10);

-can be received in the flange (25) in the described pipe (10);

-be used for described conduit (20) is connected to the releasable bindiny mechanism (35) of described flange (25);

It is characterized in that described bindiny mechanism (35) comprises again:

-can be about two connection elements (40a, 40b) of described conduit (20) motion between first structure and second structure; Described connection element (40a, 40b) is connected to described conduit (20) and described flange (25) securely in described first structure, and can separate with described conduit (20) and described flange (25) in described second structure;

-can about be arranged at described first the structure described connection element (40a, 40b) and along the path (P) at primary importance (P ₁) and the second place (P ₂) between the motion locking member (50), at described primary importance (P ₁), described connection element (40a, 40b) remains on described first structure by described locking member (50), and at the described second place (P ₂), described connection element (40a, 40b) can be freely towards described second tectonic movement; And

-be used at least at the 3rd position (P ₃) locate with described locking member (50) be constrained to described connection element (40a, 40b) first the constraint device (49,59), described the 3rd position (P ₃) be arranged at described primary importance and the second place (P along described path (P) ₁, P ₂) between;

Described locking member (50) can be at described the 3rd position (P ₃) locate to intersect at described path (P) described path (P) and about described connection element (40a, 40b) at least the four position and the 5th position (Q ₂) between the motion, in described the 4th position, described first the constraint device (49; 59) prevent described locking member (50) along described path (P) towards the described second place (P ₂) motion, at described the 5th position (Q ₂), described locking member (50) can be freely along described path (P) towards the described second place (P ₂) motion.

2. equipment according to claim 1 is characterized in that, described equipment comprises at least the six position (P that is used for along described path (P) ₄) locate with described locking member (50) be constrained to described connection element (40a, 40b) second the constraint device (48; 58);

Described locking member (50) also can be at described the 6th position (P ₄) intersect at described path (P) and about described connection element (40a, 40b) at least the seven position and the 8 positions (Q ₄) between the motion, in described the 7th position, described second the constraint device (48,58) prevent described locking member (50) along described path (P) towards the described second place (P ₂) motion, at described 8 positions (Q ₄), described locking member (50) can be freely along described path (P) towards the described second place (P ₂) motion.

3. equipment according to claim 1 and 2, it is characterized in that, the described first constraint device (49,59) comprises first portion (59) of being limited by described locking member (50) and is limited and be positioned at described the 3rd position (P by one (40b) in the described connection element (40a, 40b) ₃) first projection (49) located; Described first projection (49) is at described the 5th position (Q of described locking member (50) ₂) locate to be contained in a gap in described first portion (59), and contact described locking member (50) to prevent that described locking member (50) is towards the described second place (P in described the 4th position of described locking member (50) ₂) motion.

4. according to claim 2 equipment according to claim 3 when being subordinated to claim 2 maybe, it is characterized in that described locking member (50) can be at described the 3rd position and the 6th position (P ₃, P ₄) locate to be parallel to straight line (Y) motion that intersects with described path (P); And described the 5th position (Q ₂) and described 8 positions (Q ₄) spaced apart along described straight line (Y).

5. according to each described equipment in the claim 2 to 4, it is characterized in that, the described second constraint device comprises second portion (58) of being limited by described locking member (50) and is limited and be positioned at described the 6th position (P by another (40a) in the described connection element (40a, 40b) ₄) second projection (48) located; And described second projection (48) is at the described 8 positions (Q of described locking member (50) ₄) locate to be contained in a gap in described second portion (58), and contact described locking member (50) to prevent that described locking member (50) is towards the described second place (P in described the 7th position of described locking member (50) ₂) motion.

6. according to each described equipment in the aforementioned claim, it is characterized in that described connection element (40a, 40b) is configured as corresponding closed annular.

7. according to each described equipment in the aforementioned claim, it is characterized in that described connection element (40a, 40b) defines can be by the 3rd portion of arc (38) of described pipe (10) joint in described first structure.

8. equipment according to claim 7 is characterized in that, described connection element (40a, 40b) comprises corresponding first (42a, 42b) and the second portion (41a, 41b) relative with corresponding described first (42a, 42b).

9. equipment according to claim 8, it is characterized in that described first (42a, 42b) comprises that (40a 40b) is in described first when structure towards each other and define the corresponding tooth (46a of described the 3rd portion (38) when described connection element, 46b) and the chamber (47a, 47b).

10. according to Claim 8 or 9 described equipment, it is characterized in that described second portion (41a, 41b) can be engaged in the corresponding grooves (29) that is limited by described flange (25).

11. each described equipment in 10 is characterized in that according to Claim 8, each connection element (40a, 40b) comprises and places corresponding first and second portion (42a, 42b; 41a, 41b) between third part (44a, 44b); When described connection element (40a, 40b) is in described first when structure, described third part (44a, 44b) rises towards corresponding second portion (41a, 41b) from corresponding first (42a, 42b).

12. packaging facilities according to claim 11 is characterized in that, each connection element (40a, 40b) comprises relative with corresponding described third part (44a, 44b) and is provided with the 4th part (43a, 43b) of other groove (39a, 39b).