CN201045079Y

CN201045079Y - Packing unit for continuous production of sealing package for spilling food product

Info

Publication number: CN201045079Y
Application number: CNU2006201671080U
Authority: CN
Inventors: F·桑蒂; A·索兹
Original assignee: Tetra Laval Holdings and Finance SA
Current assignee: Tetra Laval Holdings and Finance SA
Priority date: 2006-07-21
Filing date: 2006-11-23
Publication date: 2008-04-09
Anticipated expiration: 2016-11-23
Also published as: HK1093285A2; ITTO20060109U1

Abstract

The utility model describes a packing unit of a germ-free sealed package element capable of pouring out food products, wherein the germ-free sealed package is continuously produced from a heating case chip packaging material tube which is filled with food products, the unit comprises at least a pair of clamps which interact with the tube circularly to separate the shaped packages and on the sealed tubes on a plurality of lateral sections of the tube and a cutting device which is used for separating the formed package elements via the traversing cutting operations along each lateral sections from the tube, the cutting devices are provided with a cutting mechanism which is mounted to the clamp and slides in the cutting direction transverse to the tube, each cutting mechanism is provided with each first cutting edge and is capable of being mounted in each first construction, wherein the sliding of the cutting mechanism in the cutting direction leads each first cutting edge to interact with the tube to proceed cutting operation, each cutting mechanism is provided with each second cutting edge on the relative end of the first cutting edge, and each cutting mechanism is capable of being mounted in the second construction optionally, and the sliding of the cutting mechanism in the cutting direction leads each second cutting edge to interact with the tube to proceed the cutting operation.

Description

Be used for producing continuously the packaging unit of the sealed package of pourable food products product

Technical field

The utility model relates to the packaging unit that is used for producing continuously from packaging material tube the sealed package of pourable food products product.

Background technology

As known, many pourable food products products, for example fruit juice, pasteurised milk or UHT (uht) milk, grape wine, catsup etc. are sold with the package of being made by the sterilization wrap material.

The representative type example of this type of package is the package that is used for liquid or pourable food products product that is configured as parallelepiped, is known as Tetra Brik Aseptic (registered trade mark (RTM)), and it is made by folding and sealing layer press strip packing.

Packing have multiple-structure, and multiple-structure comprises the basic unit that is used for rigidity and intensity substantially, and basic unit is limited by the fibrous material layer of for example paper or mineral filled polypropylene material; The multilayer heat-sealing plastic material, for example polyethylene film that also comprise the both sides that cover basic unit.

Be used for the long term storage product, for example under the situation of the aseptic packages of UHT milk, packing also comprise the layer of choke and resistance luminescent material, aluminium foil or ethylene-vinyl alcohol copolymer (EVOH) film for example, the heat-sealing plastic material that another layer formed the final contact food product of package inner face is gone up and be coated with again to its layer that is added to the heat-sealing plastic material.

As known, this type of package is produced on device of full automatic packaging, and the packing of being supplied with by the width of cloth on device of full automatic packaging form continuous pipe.More specifically, the width of cloth of packing launches and supplies with by the desinfection chamber on the wrapping machine from reel, the width of cloth at the desinfection chamber inner packaging material is sterilized, the disinfectant by application examples such as hydrogen peroxide for example, hydrogen peroxide evaporates by heating subsequently, and/or by packing being placed under the radiation of suitable wavelength and intensity; And the width of cloth of sterilization maintains in the osed top gnotobasis, and is folded into cylinder and is sealed longitudinally and form continuous pipe in a known way.

In fact the pipe of packing that has formed the extension of desinfection chamber is supplied with in vertical direction, and the pipe of packing is filled with sterilizes or the food product of aseptic process, and supplies with to form single package by water-tight equipment.More specific, in water-tight equipment, pipe in a plurality of equally spaced cross-section sealings to form mutually by the transverse sealing band, i.e. the sealing band bonded assembly pillow bag that extends perpendicular to the direct of travel of pipe.And will rest the head on bag separately by the relevant transverse sealing bar of cutting, and will rest the head on bag then and be sent to folding station, and rest the head on to wrap at folding station and mechanically be folded to form the package of respectively finishing that is configured as parallelepiped.

As the wrapping machine described at European patent EP-B-0887265 for example is known, and this wrapping machine comprises two chain forwarders that define each circular path and respectively be equipped with a plurality of sealing clamps.Two paths have each branch, branch faces and pipe parallel and supply packing between them substantially mutually, make the corresponding clamp on the clamp on the forwarder and forwarder cooperate, with at a plurality of cross-section pinch tube and sealing and cutting bags in succession along the branch in described each path at other.

More specifically, bag is mounted to a cutter cuts to slide of clamp on the cut direction transverse to pipe, with the pipe mutual action and along the cross-sectional cut pipe of pipe.

Wrapping machine also is known as and only comprises two pairs of clamps, the two pairs of clamps alternately at the Guan Shangzuo of packing in order to clamp and sealing, for example pipe of heat sealing packaging material along a plurality of equally spaced cross-sectional planes.

In case finish sealing, for example be assembled to that cutter on of every pair of clamp is activated and with the pipe mutual action of packing, with along the pipe of the line of centers cutting packing of leak free cross-sectional plane and thereby separate the pillow bag from the bottom of the pipe of packing.Because the bottom is laterally sealed, relevant clamp can be opened when reaching end point position to avoid the interference with the top portion of pipe.Simultaneously the clamp of other that operate in identical mode is to moving down from the top dead-centre position, to repeat above clamping/formation, sealing and cutting operation.

In two class wrapping machine, cutter comprises cutting edge, and cutting edge and pipe mutual action are to carry out cutting operation.

Cutting operation is by being undertaken by known actuation device mobile cutter between dead position and control position, in the dead position cutter is contained in relevant clamp and relevant cutting edge separate from pipe, stretch out forward from relevant clamp at the control position cutter, and relevant cutting edge and pipe cooperation.

In industry, the demand of experiencing is the total cost that increases the work life of cutter and reduce cutting operation.

The utility model content

The purpose of this utility model provides the packaging unit that is designed to meet above requirement.

According to the utility model, a kind of packaging unit that is used for producing continuously from the pipe of heat-sealing sheet packing the aseptic sealed packages part of pourable food products product is provided, and described pipe is filled with described food product and described unit comprises: at least one pair of circularly with described pipe mutual action with clamp at a plurality of cross-section sealed tubes of pipe; Operate the cutter sweep that separate established described package from described pipe by transverse cuts with being used for along each described cross-sectional plane; Described cutter sweep comprises that at least one is assembled to a cutter to slide at the cut direction X transverse to described pipe in the described clamp; Each described cutter comprises each first cutting edge and can be installed in each first structure that wherein the slip of cutter on described cut direction causes described each first cutting edge and described pipe mutual action to carry out described cutting operation; Wherein, each described cutter is included in each second cutting edge of the opposite end of described first cutting edge; And each described cutter can selectively be installed in second structure, and the slip of wherein said cutter on described cut direction X causes described each second cutting edge and described pipe mutual action to carry out described cutting operation.

Compare the feasible work life that has reduced total cutting cost and increased cutter greatly in unit of the present invention with known single-blade cutter.

Description of drawings

Preferred, non-restrictive example of the present utility model will be described with reference to the drawings by example, wherein:

Fig. 1 shows the schematic side elevation according to packaging unit of the present utility model;

Fig. 2 shows the downside middle section of the details of Fig. 1;

Fig. 3 shows along the cross section of III-III line among Fig. 2;

Fig. 4 shows the top side view of the more high range of the details among Fig. 1, Fig. 2 and Fig. 3;

Fig. 5 shows along the cross section of the more high range of V-V line among Fig. 4.

The specific embodiment

Numeral 1 expression among Fig. 1 is used for producing continuously from the vertical tube 3 of packing the integral body of packaging unit of the sealed package 2 of pourable food products product, and pourable food products is pasteurised milk or UHT milk, fruit juice, grape wine etc. for example.

1 upstream forms the width of cloth of folding by the end wise in known manner and sealing heat-sealing sheet material of pipe 3 in the unit, and fills with food product that sterilized or aseptic process from the top and to be used for packing.

Unit 1 comprises the framework 4 that is limited by two sidewalls 5 (only showing) and two parallel

transverse walls

6,7, and

transverse wall

6,7 is rigidly fixed between the sidewall 5, to limit chamber 8 with sidewall; Comprise that also two are assembled on the framework 4 and have the first clamp 12-respectively and are called for short " clamp 12 "-and second clamp or to the formation chain 10,11 of side bitting clamp 13 hereinafter, clamp 12 with side bitting clamp 13 is cooperated with each other with pipe 3 mutual actions of the packing of supplying with along vertical-path A by chamber 8.

Chain 10 and 11 defines each circular path P, Q, clamp 12 and side bitting clamp 13 supplied with along circular path P, Q.Path P, Q extend around the

wall

6 and 7 of framework 4 respectively, and comprise each straight substantially working portion P1, the Q1 that is parallel to each other, the path A of working portion P1, Q1 adjacent tube 3 and on the opposite side of path A, extending symmetrically substantially, make each equally spaced transverse belt 17 corresponding clamp 12 and between 13 pairs of the side bitting clamps by firm grip.

Clamp 12 and be the single-piece parts of each chain 10,11 and the chain link that replaces that defines each chain 10,11 to side bitting clamp 13, and clamp 12 and to side bitting clamp 13 with the pivotally attached mode by bar 14 to interconnecting.

Support, driving and the guide device of chain 10,11 is for example known from EP-A-0887263, and therefore is not described in detail.In brief, the clamp 12 and motion of side bitting clamp 13 limited by the

cam

15,16 that is assembled on the

wall

6,7.

Each clamp 12 and side bitting clamp 13 is included in perpendicular to path A and is parallel to the main body 20 (Fig. 2 and Fig. 3) that prolongs on the direction of

wall

6,7 of framework 4; And each main body 20 has respectively holds amplifier section 21,22 (Fig. 2), stretches out first and second pins 23,24 from each of each

end amplifier section

21,22, and pin 23,24 has major dimension and the isolated axle that is parallel to main body 20.Bar 14 is connected to clamp 12 with hinge and to the pin 23,24 of side bitting clamp 13, with a clamp/pin 23 of side bitting clamp is connected to contiguous clamp/to the pin 24 of side bitting clamp.Clamp 12 and to side bitting clamp 13 also have be installed in the

amplifier section

21,22 with coaxial each of pin 23,24 to guide

roller

25,26, and roller is to 25,26 rotations (Fig. 1) on

cam

15,16.

Each clamp 12 comprises inductive heating element 29 (Fig. 3), and inductive heating element 29 is assembled to main body 20 transverse to pipe 3 path A and comprises two straight surfaces 30 of working before parallel.

As substituting of heater element 29, each has pressure strip 31 to side bitting clamp 13 (as shown in Figure 3); And the heater element 29 of each clamp 12 with accordingly the bar 31 of side bitting clamp 13 is cooperated with each other with the relevant transverse belt 17 and the heated sealant packing of pinch tube 3 securely.In use on the front surface 32 of corresponding clamp 12, bar 31 has the pad 33 of the elastomeric material of two relative flexibilities, and pad 33 is opposite to the work surface 30 and the packing cooperation of heater element 29.Each pressure strip 31 to side bitting clamp 13 passes through two elastic tip connecting devices 34 (Fig. 2), the elastic tip connecting device of the type of for example describing in EP-A-0887269 is assembled to relative subject 20, elastic tip connecting device 34 has limited surrender degree perpendicular to the directions X by the plane that limited of axle of pin 23,24, and in use defines the direction of each clamp-side bitting clamp is cut the direction of exerting pressure on pipe 3 and packing.

Each has cutter 35 to side bitting clamp 13, and it manages 3 to separate from forming the established bag that chain 10,11 sent and finally be converted into each package 2 from managing 3 in the cutting of transverse sealing band 17 places.

In following description only with reference to one to side bitting clamp 13 because all be identical to side bitting clamp 13 significantly with each cutter 35.

With reference to figs. 2 to Fig. 5, cutter 35 is assembled to side bitting clamp 13 sliding transverse to pipe 3 cut direction X, cutter 35 be flat and be rectangular shape and prolong in direction the main dimension of side bitting clamp 13, and cutter 35 comprise first before cutting edge 36.

Cutter 35 is positioned in first structure (Fig. 3), and wherein cutter 35 causes first cutting edge 36 at transverse sealing band 17 places cutting pipe 3 in the slip of directions X.

More specifically, cutter 35 is contained in the central groove 40 of pressure strip 31 and is connected to known cam actuated equipment 43 on the function with sliding type, and cam actuated equipment 43 has been controlled the motion of cutter 35 at directions X.

Very in brief, actuation device 43 comprises a plurality of cams 50 (only showing in Fig. 3) that are assembled to framework 4; With a plurality of with cutter 35 one-tenth single-piece cams follow part 41 (among Fig. 3 only show) side bitting clamp 13 is comprised on the chain 11 for each forming, and cam follow part 41 and each cam 50 and with each return spring 60 (in Fig. 3, only showing) mutual action, with mobile cutter 35 between dead position and cutting position, be contained in the pressure strip 31 at dead position first cutting edge 36, stretch out to manage from pressure strip 31 in transverse belt 17 cuttings at cutting position first cutting edge 36.

Each cam is followed part 41 and is included in and is equipped with the cylindrical bar 48 that cam is followed part idler roller 49 on the end, and cam is followed relevant cam 50 cooperations of part idler roller 49 and the actuation device 43 that is fixed to framework 4.Bar 48 also has the diameter groove 51 of the free end portion 52 of the opposite end that is positioned at idler roller 49 that is formed on bar 48, axially stretches out and is contained in loosely in the chamber 53 of pressure strip 31 from main body 20.Groove 51 engages by the edge 39 of the opposite end that is positioned at first cutting edge 36 of cutter 35.

Cutter 35 is fixed to each that cam is followed part 41 rigidly by screw 54, and screw 54 screws in in the bars 48 and the radial hole 55 that groove 51 intersects and engages each interior through hole 56 of cutter 35.Each cam is followed part 41 and is also comprised the stop member that is limited by the packing ring 46 that is assembled to bar 48, and when relevant cutter 35 was in cutting position, stop member was put on the rear surface 47 that leans against main body 20.

Should be emphasized that and to use the actuation device 43 different other types that cutter 35 can be moved on directions X with an operation that illustrate.

Cutter 35 advantageously comprises second cutting edge 61 (Fig. 3 is to Fig. 5) of the opposite end that is positioned at first cutting edge 36, and can selectively be positioned in second structure, wherein the slip at described directions X causes transverse belt 17 mutual actions of second cutting edge 61 and pipe 3 to finish cutting operation.

More specifically, second cutting edge 61 is formed on the edge 39, make that following part 41 by unscrewing screw 54 from cam discharges cutter 35, and, cutter 35 is set at second structure by cutter 35 Rotate 180 degree are orientated as towards pipe 3 first cutting edge 36 is contained in the groove 51 and with second cutting edge 61.

When cutter 35 is in second structure, first cutting edge 36 be contained in the groove 51 and actuation device 43 with and the identical mode of aforesaid way mobile cutter 35 between dead position and control position, be contained in the pressure strip 31 at dead position second cutting edge 61, stretch out to manage 3 from pressure strip 31 in transverse belt 17 cuttings at control position second cutting edge 61.

More specifically, each comprises a plurality of teeth that replace 62 and gap 63 for first cutting edge 36 (only shown in Figure 3) and second cutting edge 61 (at Fig. 3 to shown in Fig. 5).

In the following description, only with reference to a tooth 62 and a gap 63, because the tooth 62 of first cutting edge 36 and second cutting edge 61 all is identical with 63 obvious ground, gap.

Tooth 62 is limited by two flat walls 64, and wall 64 stretches out from cutter 35 symmetrically.

Wall 64 converges in each end parts 66 and is that edge 65, end parts 66 have the equicrural triangle form and be positioned at the outside with respect to cutter 35.More specifically, each end parts 66 comprise two on the opposite side that defines cutter 35 wall 64 and define the part 67 of two sides of described equicrural triangle.

Part 67 is extended symmetrically with respect to the central plane R of tooth 62 and define observed reading 32 between it and spends to the angle [alpha] of 38 degree, as indicated in Figure 5.Angle [alpha] is preferably 35 degree, and test shows that this is the angle of the best that is used to improve the work life of first cutting edge 36 and second cutting edge 61.

Gap 63 is laterally limited by two walls 64 of each contiguous tooth 62, this wall 64 from opposite side converge for the recessed bottom of the bending in gap 63 divide 70 each hold.

More specifically, the wall 64 that defines gap 63 is inclination angle beta relative to each other, and the observed reading of angle beta is 72 to spend to 78 degree, as indicating in Fig. 4.Angle beta is preferably 75 degree, and test shows that this is the angle of the best that is used to improve the work life of first cutting edge 36 and second cutting edge 61.

About forming and the operation of the unit 1 of sealed package is known, and so be not described in detail.

Very in brief, clamp 12 and to side bitting clamp 13 according to pipe 3 mutual actions of the motion cycle ground that is applied by

cam

15,16 with packing.Managing 3 is therein little by little compressed and after compression and packing are folded to form the first step of flat transverse sealing band 17 partly, clamp 12 and side bitting clamp 13 is arrived part P1, the Q1 of each path P, Q, on pipe 3, apply maximum grip pressure along part P1, Q1, and the heater element 29 that starts clamp 12 with heat sealing packaging material and thereby along two potted line leakproofing materials, potted line limits (Fig. 3) by the surface 30 of working of heater element 29.

During above step, cutter 35 remain on first the structure and in the dead position shown in Fig. 3.

Before clamp 12 and offside volume 13 were regained from packing, equipment 43 was activated so that cutter 35 is released pressure strips 31.

First cutting edge 36 of cutter 35 so edge are transverse to the line of cut of material and cut packing between two potted lines.

In case first cutting edge 36 of cutter 35 by material then it be received in the clamp 12 in the corresponding grooves.

In case material is cut, actuation device 43 resets to cutter 35 dead position in the pressure strip 31 in known manner.

Clamp 12 and relevant to side bitting clamp 13 separately and separate and the package 2 that still has a pillow packet form can be delivered to ensuing processing station from the pipe 3 of continuous packing, folding station for example, wherein package presents its final structure.

When 36 wearing and tearing of first cutting edge, cutter 35 is set at second structure, make cutting operation afterwards be undertaken by second cutting edge 61.

More specifically, unscrew screw 54 and discharge cutter 35 to follow part 41 from cam; And cutter 35 Rotate 180 degree to the second structure.

In second constructed, first cutting edge 36 is contained in the groove 51 and when actuation device 43 was released pressure strips 31 with

cutter

35,61 edges, the second cutting surface were transverse to the line of cut of material and cut packing between two potted lines.

Advantage according to unit 1 of the present utility model is understood from aforesaid description.

Especially, compare the unit 1 feasible work life that has reduced total cutting cost and increased cutter 35 greatly with known single-blade cutter.

In fact the cost of cutting operation depends on the cost of cutter 35 and change the used time of cutter 35 when the wearing and tearing of first cutting edge 36.

Cutter 35 can be to be same as or more to switch to second structure faster than the time of dismantling the single-blade cutter that worn-down is known and assembling new known single-blade cutter from first structure.

Cutter 35 also can be more to switch to second structure faster than the time of sharpening the single-blade cutter that worn-down is known from first structure.

Because of cutter 35 has second cutting edge 61, even cutter 35 also can use effectively when first cutting edge 36 fully weares and teares.

The cutter 35 that is characterized as first cutting edge 36 and second cutting edge 61 is therefore more cheap than two known single-blade cutters.

In addition, because angle [alpha] and β have increased the tooth 62 of first cutting edge 36 and second cutting edge 61 and the resistance to abrasion in gap 63 greatly, cutter 35 has extremely long work life.

Apparently, can change as describing at this and graphic unit 1 and do not depart from the protection domain that in the claims that attaching, limits.

Especially, unit 1 can be comprise on only a pair of or the two pairs of pipes 3 that act on packing circularly clamp 12 and to the type of side bitting clamp 13.

At last, cutter 35 can be assembled to as being opposite to the clamp 12 to side bitting clamp 13.

Claims

1. packaging unit (1) that is used for producing continuously the aseptic sealed packages part (2) of pourable food products product from the pipe (3) of heat-sealing sheet packing, described pipe (3) is filled with described food product and described unit (1) comprising:

At least one pair of circularly with described pipe (3) mutual action with the clamp (12,13) of a plurality of cross-section sealed tubes (3) at pipe (3); With

Be used for from described pipe (3) by separate the cutter sweep (35) of established described package (2) along the transverse cuts operation of each described cross-sectional plane; Described cutter sweep (35) comprises that at least one is assembled to (13) in the described clamp (12,13) with at the cutter (35) that slides transverse to the cut direction (X) of described pipe (3);

Each described cutter (35) comprises each first cutting edge (36) and can be installed in each first structure that wherein the slip of cutter (35) on described cut direction (X) causes described each first cutting edge (36) and described pipe (3) mutual action to carry out described cutting operation;

It is characterized in that each described cutter (35) is included in each second cutting edge (61) of the opposite end of described first cutting edge (36); And each described cutter (35) can selectively be installed in second structure, and the slip of wherein said cutter (35) on described cut direction (X) causes described each second cutting edge (61) and described pipe (3) mutual action to carry out described cutting operation.

2. unit according to claim 1 is characterized in that, each described clamp (12,13) is assembled to relevant forwarder (10,11).

3. unit according to claim 1 and 2 is characterized in that, described first and described second cutting edge (36,61) each comprise each a plurality of solid member that replace (62) and hollow member (63).

4. unit according to claim 3 is characterized in that, at least one of described solid member (62) stretched out and the sidewall (64) that converges for edge (65) limits from described cutter (35) by two; Described edge (65) comprises that at least two are mutually tilted 32 to spend to the part (67) of first angles (α) of 38 degree.

5. unit according to claim 4 is characterized in that, described first angle (α) is measured as 35 degree.

6. according to each described unit of claim 3 to 5, it is characterized in that, at least one of described hollow member (63) limited by two described walls (64) of each described solid member (62), and two walls (64) converge from opposite side and are recessed portion (70); The described wall (64) of each described hollow member (63) defines 72 betwixt and spends to second angle (β) of 78 degree.

7. unit according to claim 6 is characterized in that, described second angle (β) is measured as 75 degree.