CN1018068B - Film dispenser - Google Patents

Abstract

A film dispenser comprises a holder for a roll of packaging material. The holder is carried by a support which includes a handle. A brake roller is carried by the support and engages the peripheral surface of the roll. Biasing springs bias the roll and brake roller together whereby a braking force is established on the roll restricting rotation thereof and facilitating stretching of the packaging material when it is withdrawn from the roll and around the brake rollers.

Description

Film dispenser

The present invention system is about packing, particularly about being fit to the article packing equipment with plastic package material or synthetic plastics Strapping Material.

So-called " oriented film "-typically refer to synthetic plastics material, the linear polyethylene of intrinsic such as having " adhesion " characteristic, oriented film has been used for the packing of multiple pattern article: pallet stacking article for example comprise beverage packaging unit such as piece material, glass container, beer and as the large-scale or Heavy Product of analogues such as big news paper roll, craft paper.

Oriented film is bundled into one with article, so that loading and unloading and transportation.Develop a collection of usefulness " stretching-big envelope " and packed the packaging machine of such group of products.

In many cases, may require many products identical or inequality when delivery or sale, be with pallet or be not with pallet ground packaging together, for example, may need several the goods packings of selling are integral in fields such as goods distribution, parts supplies.

So far, be with many goods packings that may be packaged into case, box respectively separately together in this class is used with celluloid strip, band, rope, metal or plastic tape or its similar whipping.This packing method is not only time-consuming but also require great effort, thereby quite expensive.

Background technology:

The machine that has now proposed several forms is suitable for coming connection with wrapping of piece with oriented film.Australian Patent No511,642 disclose and a kind of packing film stock layer have been surrounded automatic packaging machine on the goods.In this wrapping machine, there are turntable clamping kinds of goods in place and with respect to the rotation of the supporting drum of oriented film.One drg acts on this reel, and producing tension force on the film stock, when it was added on the cargo of rotation, this stock stretched.This designed machine is used for sizable cargo, thereby cost is quite high.

Australian Patent No519,456 disclose a kind of technology of using the similar type wrapping machine, and Australian Patent No505,121 disclose another kind of form with a plurality of cargos packing all-in-one-piece equipment.Similarly, US Patent 4,050,221,4,271,657, and 4,432,185 stretch wrapping machines that all disclose other form, be used for that a plurality of packings are bundled into one or with the packaged of Wo 2008091717.

Use these machines and when oriented film held cargo, cargo must be transported to by the machine, load onto machine, clamp in some way or supporting.US Patent No 4,102,513 disclose one adorns the plastic tensile film with roller and holds portable manual distributing box on the row article.

This distributing box has a roll device that the oriented film roller is installed.There are two handles to be connected on the roll device so that make the usefulness of support in use.Bearing set comprises that one is fixed on the bolster on the base plate and has and a pair ofly is installed in that axle is gone up so that overhang bracket in relative rotation.Above-mentioned supporting embeds the two ends of plastic tensile film roll, plays the friction braking element of brake action when at least one is supported with work, is limited in the rotation of the oriented film reel on the bolster.

A handle links to each other with the end bearing mechanism of rotation to increase or to reduce the pulling force to reel, changes memberane stress therefrom when packing.Yet this distributing box needs two manual manipulations, and in use needs to be controlled by the operator braking degree of film roll.

The patent No0 of EUROPEAN PATENT OFFICE in November 26 nineteen eighty-two, 081,328 disclose the film dispenser of another kind of form, wherein film is walked around a pair of roller, roller is installed to such an extent that can rotate with respect to film roll, the tension force that acts on the film causes that one in two rollers of being pressed presses to the film roll surface, and the engagement system of two rollers is that one of them roller is rotated hurry up than another roller, so as between two rollers the longitudinal stretching film.For ease of moving around the pallet stacking, distributing box is equipped with the base plate of belt wheel.When this distributing box when being portable, it need roll around the pallet stacking on the floor, and for the ease of this motion, the upper end is provided with handle.And then the stretching of film is controlled by the difference of two roller circumferential velocitys.In case memberane stress reduces, keep the power that one of two rollers are pressed to the film roll surface also to reduce, allow reel to move thus unfetteredly, reduced the stretching between two rollers.

Therefore, need provide the equipment of an improved connection with wrapping of piece, it can avoid the problem in some above-mentioned packings at least.A kind of plastic sheeting that is suitable for using is provided, and preferably to make the packaging facilities of packing also be desired to linear low-density polyethylene film.

One of target of the present invention provides a kind of portable film dispenser, and it can be with a manual manipulation, and the user can carry out stretch package to one or one group of article.

It is quite simple that another target of the present invention provides a kind of structure, less movable parts arranged and use to be easy to film dispenser.

It also is a target of the present invention that a kind of film dispenser that can control the film stretching degree that is wrapped on the article on demand is provided.

The invention summary:

According to one aspect of the present invention, the device of a distribution package medium is provided, it comprises holding device, with clamping package media reel and it can be rotated, the brake equipment of package media reel and the bearing set of holding device, this medium is added on the article, can make it skidding from the reel again, above-mentioned brake equipment comprise at least one with the contacted roller means of package media mandrel surface and give above-mentioned reel afterburning and at least with a coarctate biasing augmenter of roller.

The form an of the best is that holding device comprises and two suitable end journals of the two relative hollow end of plastic medium reel.This holding device then comprises an axle in other form, and it can relatively be fixed on the bearing set, and the plastic material reel can rotate with respect to it in the case, perhaps by hinged so that rotate with respect to bearing set.

Best circumstance provides one and provides the equipment of stretchable synthetic plastics material package media from reel, comprises and supports that this reel enables holding device in relative rotation; With the bearing set that this holding device links, making this equipment therefrom can be manually, wall-mounted or other kind configuration; And brake equipment comprises the braking roller that is loaded on the bearing set, has at least a reel and braking roller biased and press to another, rotatablely moves so that make braking roller contact mandrel surface and limit it thus.

Best, bearing set comprises one at least and is connected on this holding device or all-in-one-piece handle with it, in another embodiment, bearing set then comprise be suitable for being fixed on the wall, on the bench, on the table or other lip-deep base plate.

The braking roller preferably is mounted to and contacts with the plastic material mandrel surface and exert pressure between roller and reel with bias spring, gives roll braking-force to limit its rotation.Like this, when plastic material during, the rotation of braking roller restriction reel,, change the then degree of its tensioning of scalable and stretching of spring tension so just cause the material tensioning and elongate from the reel skidding.In a certain form, spring system is connected on the cam lever that is installed on the bearing set, and it is movable, increasing or to reduce spring tension, is added on pressure on the plastics reel thereby change by the braking roller.

Device in addition is suitable for being used for changing additional bias force and keeping this power constant substantially and irrelevant with the diameter of reel.

In a kind of form of the present invention, away from reel and brake equipment place, this equipment is provided with eyelet or leading sheave, and plastic material forms twisted wire or the analogue that is similar to rope from reel by hole limit or leading sheave.And in other form, plastic material makes quite thin material form the belt that is suitable for colligation, fastens article by folding or tie down system.

In most preferred embodiment of the present invention, this equipment has shutoff device, when skidding plastic material in reel, it can be cut off.One of form is that this shutoff device comprises a blade that is installed on the bearing set.Other mode is that cut-out equipment comprises a cutting knife, it can move with respect to reel coaxially, and contact with plastic material at contiguous brake equipment place, in a further embodiment, cutter has a blade, serrated blade is preferably extended and is left certain distance along being parallel to mandrel surface substantially, when plastic material can touch it during skidding on reel.

When using equipment of the present invention, an end that is installed in the plastic tensile packing on the rotatable reel on the holding device spreads on the packed article and keep its stationkeeping when equipment separates with packed article, this motion causes the stretching of plastic material, is wrapped on the article simultaneously.When the tension force in the film reaches when giving fixed minimum value, there are enough application forces to be used for oriented film, overcome brake equipment simultaneously for brake action with film skidding reel.

A kind of linear polyethylene film is complied with the several times that its purposes can be stretched to its original length.Because the intrinsic elasticity of some kind film, the film that has stretched has the trend of recovering its free size or state, has pressure to act on by on the goods of this blister-pack or the article and goods is firmly fixed together thus.

According to additional aspects of the present invention, a kind of film dispenser has been proposed, comprise: housing, housing handle apparatus, the pair of guide rails that the core pipe two ends of supporting to be equipped with bobbins of packaging material are arranged in the housing, reel can rotate with respect to housing, acts on additional bias force device of making its deflection housing the place ahead on the core pipe and one and is installed in the housing rotationally and the contacted braking roller of bobbins of packaging material.

If desired, distributing box can also be designed to wall-mounted, as to have above-mentioned identical characteristics oriented film distributing box.

For the ease of understanding the present invention, only some embodiment is described in conjunction with the accompanying drawings below with way of example.

Description of drawings:

Fig. 1 is the side perspective illustration of first embodiment of the present invention;

Fig. 2 has represented the axle form an of the best;

Fig. 3 is the top view of second embodiment;

Fig. 4 is the top view cutaway view of other embodiment;

Fig. 5 is the transparent view of the other embodiment of explanation the present invention;

Fig. 6 is that top view cuts open in the office of distributing box shown in Fig. 5;

Fig. 7 is the cutaway view along Fig. 6 center line 7-7;

Fig. 8 represents to brake an improvement structure of roller.

The explanation of most preferred embodiment:

Fig. 1 shows a kind of oriented film distributing box that can one-hand control.The device of present embodiment comprises that axle 8(with reference to Fig. 2, will be described afterwards), it is articulated in and is beneficial on the axle journal of framework 10 rotate.The shape of axle makes it can pass the hollow of oriented film reel 11.

The end away from reel 11 and axle 8 at framework 10 has one handle or handle 12.Distributing box has braking roller 13, and the rubber roller of coarse texture is preferably arranged, and roller is contained on the arm 6, and the spindle nose 16 that can slide in groove 7 is arranged.Give roller 13 additional bias forces so that it can keep a basic unmodified braking force on reel 11 by spring 14.When this equipment of use, this braking force is enough to make the film on the reel 11 to obtain the stretching of enough degree.One end of each additional bias spring 14 is connected in the hole 15 of a side of framework 10, and the other end then is connected on the spindle nose 16 of braking roller 13.As another kind of mode, also available compression spring device guarantees to brake roller and acts on bias force required on the oriented film reel.More desirably be in various embodiment of the present invention, to have to be suitable for to make spring controlled control apparatus, for example use one group of hole 15.

With reference to figure 2, it represents the axle 8 of a telescoping structure, holds an interior element 18 in staving 17, and it has a diameter to equal the head of staving 17 diameters.In the staving 17, the other end at head 19 has a compression spring (not shown) to make it to enter in the socket that matches with it on the framework 10 in order to plug 20 is produced subsidiary load, a pallet or banking pin 21 are arranged in the groove 22 of staving 17, run out of staving 17 in order to element 18 in stoping.During use,, pull the plug out of the socket 20 in the socket on framework 10, just can very simply axle 8 be moved on framework 10 as long as relatively move staving 17 and interior element 18.Another kind method is, engage receptacle and plug portion in handle 12 is comprising, removable lower handle and near axle 8.

Fig. 3 is the top view of another embodiment of the present invention, in this embodiment, an axle, it can be to be similar to axle shown in Figure 2, also can be to be fixed on the framework 23, passes the hollow core of the reel 11 of oriented film 24.Framework 23 has handle or handle 25, and distributing box has the braking roller 26 that additional bias force is provided.Braking roller 26 is by steel wire rack 35 supportings, and this steel wire rack then is fixed on the framework 23 by a pair of eyelet 28, and the torsion spring 27 of making one with framework 35 is used for braking roller 26 is applied bias force.

With reference to Fig. 4, another embodiment shown in it is a kind of manual distributor 31 of being provided plastic sheeting by the reel on ground paper or other material fuse 30 32.30 in fuse be bearing in respectively with framework side element 36 and 37 all-in-one-piece plug ferrule 33 and 34 on, framework side element 36 has all-in-one-piece handle 38 with it, handle extends generally along the coaxial direction of sleeve pipe 33 and 34.Free end at handle 38 has a bag of amplifying 39, in the socket 41 that buckle is made on side element 37 and be fixed together with framework component.

Roller 42, the roller of neoprene or its analogue preferably is contained in and makes it on the spring 43 and 44 to contact with the surface of film roll 32.Spring 43 and 44 is separately fixed on the tension regulating element 46 and 47 that is positioned within framework side element 36 and 37.Each regulating element has cam follower 48,49, can embed a groove seat of the many groove seats 51 on the sidewall that is arranged in the groove 52 on each framework side element 36 and 37.

On framework side element 36 cutting blade 53 is arranged, it is fixing and protecting blade 53, backplate to allow film to touch blade 53 by backplate 54, can also prevent that the user accidentally and misconnection contact knife sheet simultaneously.

Be some purposes, the film of plastic material can be made for different shapes such as band, cable or line, for this purpose, is provided with on the distributing box 31 by wire rack 57 or eyelet 56 that its analogue supported, so that eyelet is away from roller 42.When plastic sheeting when the eyelet 56, the contraction of eyelet together with the tension force that is added on film with and intrinsic " adhesion " characteristic, make film be strained to the fine rule shape of very big intensity.

Referring to Fig. 5,6,7 and 8, the distributing box of this embodiment also comprises by the molded housing that forms 62 of synthetic plastics, and it has one around axis 66 hinged front portion 63 and rear portion 64.As shown in Figure 5, clip 67 with two partial fixings of housing at its control position.

The housing both sides are provided with a pair of guide rail 68 that can hold film roll core or core pipe 69, make it can allow membraneous material reel 11 to move and can move along guide rail 68.

There is the handle 71 of the one made at housing rear portion 64, housing anterior 63 then is equipped with a braking roller 72, braking roller 72 comprises that is installed in a bearing pin 73 of anterior 63,74, one of bearing sleeves that are loaded on the two ends of bearing pin 73 are rotatably installed in the PVC roller 76 that is similar to rigidity on the frame bearing sleeve tube 74.

A pair of bias spring 78 be contained in the coaxial axle journal 79 of bearing pin 66 on.One end 81 of bias spring 78 is by the bar in the housing rear portion 64 82 supporting, and 83 of the other ends are pressed on the core pipe 69 that guide rail 68 supported.78 pairs of core pipes 69 of bias spring apply the biasing subsidiary load, make reel 11 press to braking roller 72.During use, from the membraneous material of reel 11 from reel 11 and braking coffin meet 72 engage in the roll gap that is generated by and the oriented film material is wrapped on packaged single-piece or the article in groups.Be stretched in the time of making film bag article by the braking force that applies of braking roller 72, its level of stretch depends on the rotation degree of flexibility of additional bias force and braking roller 72, because oriented film is by the roll gap of two rollers, material is strained all the time securely on reel 11 and can be had when packing to keep a unmodified tension force.

With reference to Fig. 8, biasing roller 72 has a built in type coupling mechanism, changes the rotation degree of flexibility of braking roller 72 in order to regulate in the use.Structure described in Fig. 8 comprises the adaptive a pair of flange 86 and 87 that engages in both ends with braking roller 72.Flange 86 with 87 by spring 88 and screw rod 89 tension that is being connected handle 91.Rely on the screw thread motion of handle 91 and screw rod 89, the axial location of scalable screw rod 89 changes the tension force in the spring 88, has changed flange 86 and 87 therefrom and has acted on the pressure at braking roller two ends, rotates flexibility ratio thereby change it.

Claims (13)

1, a kind of distributing box from medium reel dispensing package medium, comprise: framework, be rotatably installed on this framework, be used for braking roller with a surface engagement of this medium reel, with with the device that this roller and reel is biased in together, it is characterized in that: this framework has handle apparatus, pair of guide rails rotatably mounted this package media reel, one dispense aperture is arranged in this framework, provide this package media by this opening, this opening is arranged to make this package media to pass roll gap between this reel and braking roller, and cooperate with this braking roller and this roller of pile warp is issued, and this bias unit is braked the roller bias voltage with this reel to this, thereby make this braking roller to contact with the surface of package media reel with the proportional power of biasing force, this braking roller hinders the rotation of this package media reel.

2, distributing box as claimed in claim 1 is characterized in that: this package media reel is contained on the mandrel, this mandrel this framework guide rail of rotatably packing into.

3, distributing box as claimed in claim 1, it is characterized in that: this braking roller comprises that a cylindrical roller is contained in the bearing that is formed by the opening in this framework, this bias unit comprises one or more springs, and this action of the spring is on this package media reel and make the circumferential surface effect and one and the power that is in proportion of spring force of this braking roller and this reel.

4, distributing box as claimed in claim 3 is characterized in that: two bias springs match with the protrusion end that a rigidity is rolled core, and this reel is braked the roller bias voltage to this.

5, distributing box as claimed in claim 4, it is characterized in that: this bias spring comprises a pair of spring members that is loaded on the framework, this each spring members has pair of end portions, and one end of the other end and core pipe joins the one end by this supporting framework, so that this reel is braked the roller bias voltage to this.

6, distributing box as claimed in claim 1 is characterized in that: this braking roller comprises the unitor of making one, is used to limit the rotation of this braking roller.

7, distributing box as claimed in claim 6 is characterized in that: this unitor is adjustable.

8, as the distributing box of claim 6 or 7, it is characterized in that: this unitor comprises the end flange of an end frictional connection of at least one and this braking roller, and adorns the spring of this flange to this end bias voltage of this braking roller.

9, distributing box as claimed in claim 8 is characterized in that: the flange of a pair of spring bias voltage cooperates with this braking roller opposite end.

10, distributing box as claimed in claim 2, it is characterized in that: this guide rail in this framework comprises the relative groove of the relative both sides that are positioned at this framework, this groove extends to the rear end of this framework from this end of this framework, this groove is used to accept the two ends of this mandrel, thus rotatably mounted this package media reel.

11, distributing box as claimed in claim 1 is characterized in that: this framework is by two hinged forming of part, and can be in an open position the i.e. position that can pass through of this package media reel, and move between the off position.

12, distributing box as claimed in claim 1 is characterized in that: this bias unit is adjustable.

13, distributing box as claimed in claim 1 is characterized in that: this package media is extendible synthetic plastics film.

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