CN102639401A

CN102639401A - Chamber shrink wrapping machine

Info

Publication number: CN102639401A
Application number: CN201080046548XA
Authority: CN
Inventors: 迪耶戈·巴尔巴罗
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-14
Filing date: 2010-08-11
Publication date: 2012-08-15
Also published as: US20120137639A1; WO2011017755A1; AU2010282220A1

Abstract

A chamber shrink wrapping machine having a longitudinal body defining a lower portion of a chamber, a hood with an integral L-sealer transversely hinged to the body to define an upper portion of the chamber when lowered, an air heater to supply heated air to the chamber, a roller conveyor mounted to the body to initially support a product to be wrapped in the chamber longitudinally and transversely closely adjacent the L-sealer during sealing and cutting of heat-shrinkable film around the product when the hood is lowered, wherein the body defines longitudinal and transverse horizontal air ducts in the lower portion of the chamber to direct heated air toward the L-sealer and around the product.

Description

The chamber shrink packaging machine

Technical field

The present invention relates to chamber (chamber) shrink packaging machine.

Background technology

Semi-automatic artificial feeding chamber shrink packaging machine can be accomplished sealing of heat shrink films and shrink in single job.This type of machine has the chamber that is formed by machine fuselage and the hood that engages with hinge that has complete L formula envelope cutter (L-sealer).The operator will wait for that packaged products puts on the product tray longitudinally the heat shrink films to the centre parcel.Then, the product that manually will be wrapped in the film is put into chamber, and said product receives static the support on the outlet conveyer that closes on L formula envelope cutter.Then, servomechanism is fallen hood automatically, and activation L formula envelope cutter seals and cuts the film of product wrapping, and the air of heating can be transported to and make the film shrink wrapped in the chamber to product then.Behind preset ST, the automatic lifting of hood, the product of outlet conveyer after with shrink wrapping is transported to outside the chamber, begins the packaging process of a new round again.

Traditional P VC film has been applied to shrink packaging machine, and polyolefin film has begun to obtain to utilize recently.Polyolefin film needs higher temperature to carry out shrink wrapping to product effectively, makes it efficiently utilize the importance of heat thereby promoted the optimization shrink packaging machine.Shrink packaging machine efficiently produces, distributes and keeps the ability of heat is to influence energy use and the important performance characteristic of time process-cycle.

One of shortcoming of tradition chamber shrink packaging machine is must seal between the cutter edge strip with the L formula in product edge leave L shaped slit, can flow into and be centered around around the product to guarantee to add hot air.Generally, does not wait from 20 millimeters to 80 millimeters in this slit, look product to be packaged volume (size) and the height and decide.This slit can increase the hot air flow amount that adds, and has increased the use amount of film simultaneously, thereby has increased ST and reduced energy efficiency.

Another shortcoming is, if the careless machine of operator, so hood fall automatically with the lifting meeting scatter and disappear a part this should dispersed heat.For providing enough dynamics accurately with cavity seal and prevent the manipulator cover that undue heat scatters and disappears, in closing the process of chamber, can bring security risk to the operator, promptly hand may be stuck between fuselage and the hood.Someone has proposed to use the electronic broken circuit switch, and through behind the Preset Time, when hood ran into obstacle, this cut-out switch can make hood stop to fall.This Electronic safety switch complex structure and costing an arm and a leg, and be considered to also not have mechanical fail safe measure reliable.

What we needed is a kind of chamber shrink packaging machine that can solve an above-mentioned difficult problem.

Summary of the invention

The invention provides a kind of chamber shrink packaging machine, comprise: the vertical fuselage that defines the chamber bottom; Hood, said hood have the L formula envelope cutter that forms integral body and laterally engage with hinge with fuselage with hood, when hood is fallen, and formation chamber top; The airheater that adds hot air is provided to chamber; Be installed in the roller conveyer on the fuselage; Under initial condition, this roller conveyer is used to prop up product to be packaged in the chamber, when hood is fallen; Outside sealing of L formula envelope cutter and cutting products in the process of heat shrink films; Said product is closely adjacent at vertical and horizontal and L formula envelope cutter, and its middle machine body has defined the horizontal ventilation flue of chamber bottom vertical and horizontal, guides into around L formula envelope cutter and the product in order to will add hot air.

The ventilation flue can be enclosed in around the roller conveyer, makes to add hot air and can flow around it.The ventilation flue can be made up of the elongated groove of level.

The present invention also provides a kind of chamber shrink packaging machine, comprises: the vertical fuselage that defines the chamber bottom; Hood, said hood have the L formula envelope cutter that forms integral body and laterally engage with hinge with fuselage with hood, when hood is fallen, and formation chamber top; The airheater that adds hot air is provided to chamber; Be installed in the roller conveyer on the fuselage, under initial condition, this roller conveyer is used to prop up product to be packaged in the chamber; When hood was fallen, in the process of heat shrink films, said product was closely adjacent with L formula envelope cutter at vertical and horizontal outside cutter sealing of L formula envelope and cutting products; Wherein the roller conveyer has a plurality of parallel rollers; But said roller lateral drift and rotation are sealed cutter with product vertical and horizontal ground away from the L formula then and are transported to the chamber center, make to add hot air and be centered around around the product; The film of shrink wrapped outside product; Wherein when hood lifted, a plurality of rollers are not deflection and rotation laterally, and the product end wise that at last shrink pack is installed transfers out chamber.

A plurality of rollers can also be supported between the parallel siding track of two row lateral drift in rotation, and wherein a siding track is fixed in fuselage, and another siding track article one siding track relatively vertically moves, thereby makes said a plurality of roller collective transverse deflection.

One end of each roller can rotate and through the spring lateral drift be installed in fixedly on the siding track, the other end can rotate and be installed in longitudinal sliding on the oval-shaped base in the removable siding track.

The present invention also provides a kind of chamber shrink packaging machine, comprises: the vertical fuselage that defines the chamber bottom; Hood, said hood have the L formula envelope cutter that forms integral body and laterally engage with hinge with fuselage with hood, when hood is fallen, and formation chamber top; The airheater that adds hot air is provided to chamber; Be installed in the roller conveyer on the fuselage; Under initial condition, this roller conveyer is used to prop up product to be packaged in the chamber, when hood is fallen; In the process of heat shrink films, said product is closely adjacent with L formula envelope cutter at vertical and horizontal outside cutter sealing of L formula envelope and cutting products; And hood driving device (hood actuator), the purpose of wherein acquiring the hood driving device is that it can support the weight of hood when hood is fallen, and hood is clamped to be in the close position then.

The hood driving device can comprise in order to support the pole of hood; This pole be used to prevent pole move and be equipped with crossing of spring the lever of fulcrum center-point be coupled, thereby support the weight of hood, like this; When hood was fallen, this lever can be left behind pole to clamp hood in make position.The lever of having crossed the fulcrum center-point can be contained on the tension spring that is fixed on the fuselage.

Can drive this hood driving device and fall hood, this hood driving device comprises free-wheel clutch, and said free-wheel clutch can be realized idle running (idly) lifting of hood.

Chamber shrink packaging machine of the present invention can further include the transmission gear that is fixed on the motor, be fixed on the free-wheel clutch free gear and with the fixing transmission gear and the engagement device of free gear rotational fixation, be transferred to hood with propulsive effort with the motor generation.This engagement device can be a gear, and said gear can contact fixed gear wheel and free gear.Through configuration, this engaging gear can be realized engagement through hood is moved to make position from initial upright position.

Can drive the hood driving device through the deceleration motor.This motor can be installed on the pedestal that spring is housed and on pivot and rotate, and the effect that motor can resist spring when being in closure state with convenient hood is moved, so that clamp hood in make position.

Chamber shrink packaging machine of the present invention can further include the controller and the controller that is used for control air temperature booster and roller conveyer that is used to control the hood driving device.

Description of drawings

Below will be only with reference to appended drawing, the present invention is further explained, wherein with illustrational mode:

Fig. 1 is the transparent view of an embodiment of chamber shrink packaging machine of the present invention;

Fig. 2 is the section drawing of chamber shrink packaging machine of the present invention;

Fig. 3 is the transparent view of the chamber of chamber shrink packaging machine of the present invention;

But Fig. 4 is the birds-eye view of the deflection roller conveyer of chamber shrink packaging machine of the present invention;

Fig. 5 is at the roller birds-eye view of deflection and deflected position not;

Fig. 6 is the transparent view of the manual hood driving device of chamber shrink packaging machine of the present invention;

Fig. 7 is mounted in the lateral plan of the manual hood driving device on the chamber shrink packaging machine of the present invention;

Fig. 8 and Fig. 9 are in respectively when opening with closure state when hood, the lateral plan of manual hood driving device in its pairing first kind and second kind of situation;

Figure 10 is the transparent view of the S. A. hood driving device of chamber shrink packaging machine of the present invention;

Figure 11 is the lateral plan that is installed to the S. A. hood driving device on the chamber shrink packaging machine of the present invention;

Figure 12 and Figure 13 open and during closure state when hood is in respectively, the end elevation of S. A. hood driving device in its pairing first kind and second kind of situation; And

Figure 14 is the lateral plan of semiautomatic loading mechanism cover driving device under the clamped situation of hood.

The specific embodiment

Fig. 1 has shown an embodiment of chamber shrink packaging machine 10 of the present invention.Machine (chamber shrink packaging machine) 10 has the vertical fuselage 12 that constitutes chamber 14 bottoms, and the hood 16 that has integral L formula envelope cutter 18, and this hood laterally engages with fuselage 12 usefulness hinges, when falling, constitutes the top of chamber 14.For instance, hood 16 is mounted in the transparent housing on the framework, and wherein L formula envelope cutter is incorporated into adjacent orthogonal frame sides.Adjustable for height horizontal roller conveyer 20 has been installed on chamber 14 lower fuselage 12.End at fuselage 12 has been installed reel stand 22, is used to rotate the heat shrink films (not shown) reel 24 that maintenance is reeled to longitudinal center.Controller 26 and product tray 28 have been installed on the fuselage 12 between chamber 14 and the reel stand 22.

With reference to figure 2, airheater 30 has been installed on the fuselage below the chamber 14 12, said airheater comprise heater element 32 with upwards towards fan 34, be used for heating the shrink film (not shown) outside the product to be packaged to chamber 14 supplied heated air.In order under indeformable prerequisite, to bear the required high temperature of shrinkage polyolefine, the blade of fan 34 adopts resistant to elevated temperatures materials such as steel.Owing to adopt steel to gain in weight, so can on fan 34, punch to reduce its weight and rotor inertia.

The fuselage 12 of machine 10 has defined the horizontal ventilation flue 13 of vertical and horizontal; The ventilation flue is positioned under the orthogonal two side seal slittings on chamber bottom, the fuselage 12; Be looped around around adjacent roller conveyer 20 sidepieces; When L formula envelope cutter 18 touches fuselage 12, heated air flow is centered around around the product (not shown) to be packaged.For example, as shown in Figure 1, chamber 14 is that vertical panel 15a and the 15b by vertical and horizontal forms, and the ventilation flue is constituted and led to the elongated groove of level between panel 15 tops and the roller 42 by the channel part ground among panel 15a and the 15b.

Hood driving device 35 has been installed, in order to the motion of guiding hood 16 on fuselage 12.In example as shown in the figure, hood driving device 35 comprises by the pole 36 of motor 38 through free-wheel clutch 40 drivings, can automatically fall back and forth and lifting hood 16.In an example; Idle running is fallen under himself weight but hood driving device 35 is arranged the lifting in order to allow driving type lifting hood 16 to be activated, if operator's hand when closed chamber 14 is stuck in hood and just can easily hand be detached for 16 times like this.Hood driving device 35, roller conveyer 20 and airheater 30 all are controlled by controller 26, can and highly to controller 26 the different operation program be set according to the different big or small of product.

To Fig. 5, roller conveyer 20 has a plurality of spaced parallel rollers 42 between two

parallel siding tracks

44 and 46 with reference to figure 3, is supported rotatable and lateral drift.Article one, siding track 44 is fixed, and another siding track 46 can vertically move with respect to fixing siding track 44, thereby can make all roller 42 lateral drifts.Removable siding track 46 can vertically move under the servomechanism (not shown) control of controller 26.Roller 42 can come driven in rotation through motor 48, and this motor has motor sprocket 50, and said motor sprocket is connected through the chain (not shown) with roller sprocket wheel 52.Motor 48 also is controlled by controller 26.Rotatable and the lateral drift of one end of each roller 42; Be installed in fixedly on the siding track 44 through being installed in spring 48 on roller sprocket wheel 52 sprocket shafts 54; Rotatable and the longitudinal sliding motion of the other end of each roller 42 is installed on the oval-shaped base 58 in the removable siding track 46.Also can in roller 42, use the erecting device of the rotatable and lateral drift of other equivalences, like hinged cardan joint or universal-joint.Fig. 4 has shown that at this moment its S. A. all is approximately perpendicular to siding

track

44 and 46 at the horizontal not roller 42 of deflected position.Fig. 5 has shown the roller 42 of lateral drift, and at this moment its S. A. and

siding track

44 and 46 roughly are acute angle.

During use; The initial position of roller 42 in chamber 14 is to be in not deflected position; Prop up the product to be packaged (not shown) in order to static state; When hood 16 was fallen, in the process of heat shrink films, said product was closely adjacent with L formula envelope cutter 18 at vertical and horizontal outside 18 sealings of L formula envelope cutter and cutting products.Then, lateral drifts and rotation take place in roller 42 automatically, and product is carried to chamber 14 centers away from L formula envelope cutter 18 with the vertical and horizontal mode, make to add hot air and flow around product, to shrink the outer shrink film of product.At last, when hood 16 lifted, roller 42 recovered laterally not deflected condition and rotation, and the product that shrink pack is installed vertically transfers out chamber 14.

Fig. 6 to Fig. 9 has shown a kind of manual hood driving device 60, when hood 16 is fallen, is used to bear its weight and falls suddenly to prevent unexpected generation of hood.In case hood is fallen, hood driving device 60 also can clamp hood in make position, and like this, chamber 14 just can be realized accurately closed and pressurize.The weight of hood 16 is come balance by spring 68, like this, opens or closes hood and only needs very little dynamics.

As shown in Figure 7, hood driving device 60 is coupled through pole 36 and hood 16.Pole 36 is coupled through crank arm 62 and axle 64 and the lever 66 that spring is housed, and this lever is used to pull the operation (over-centre operation) of fulcrum center-point.About this point, spring 68 acts on lever 66 and rotates when just beginning to move to prevent it.In case spring exceeds the pivotal point of lever 66, the pulling force of spring will impel lever forward, and in the hood driving device 60 shown in the figure, this plays the effect of bearing its weight and subsequently hood being clamped at closure state when hood is fallen.

Fig. 7 and Fig. 8 have shown the hood 16 that is in the open position.Pole 36 is fixed on hood 16 and the hood driving device 60 through adjustable

rod end junction

37a and 37b respectively, can realize hood driving device 60 is finely tuned.As shown in Figure 8, tension spring 68 acts on lever 66 and moves to prevent pole 36, thereby supports the weight of hood 16.When hood is closed, pole 36 will move down and drive lever 66 and rotate in a counter-clockwise direction also extension spring.As shown in Figure 9, in case spring surpasses the pivotal point 67 of lever 66, the pulling force of spring 68 will impel lever 66 further to rotate in a counter-clockwise direction, thereby impel pole 36 hood 16 to be clamped in make position downwards.

Spring 68 is fixed in machine 10 through the packing ring 65 that elongates with screw 69.Screw 69 can be received in any position of machine 10, the point that so just up-down adjustment changes when it no longer bears hood weight and hood is clamped in vertical direction, thus fine setting is provided for the closed procedure of hood.Acquire the pulling force that the purpose of elongating packing ring 65 is adjustable springs 68, to increase gripping power that closed hood is applied or the hood that adapts to Different Weight.

As shown in Figure 8, the purpose of acquiring screw 71 is the angle between scalable lever 62 and 66.In addition,

screw

73 and 75 is designed to be in contact with one another, to prevent the pole excessively extension.

Figure 10 to Figure 14 has represented a kind of S. A. hood driving device 70 that is used to fall hood 16.The drive plate 74 that hood driving device 70 comprises motor 72 and is coupled through free-wheel clutch and motor 70 is with closed hood 16 and its idle running is lifted.First gear 76 of motor 72 drive fixing on this motor, this gear is adjacent with second gear 78, and second gear is driven by free-wheel clutch, with downward pulling hood 16.Engaging gear 80 is housed on the lever that spring is housed 82, and this engaging gear is disposed at first gear 76 and second gear, 78 tops.

Figure 11 and Figure 12 have shown that hood 16 is in the open position and pole 36 is in higher upright position.Pole 36 is fixed in hood 16 and hood driving device 70 through adjustable rod end junction 37a and 37b.Spring 68 is in extended state not to support the weight of hood 16.

Shown in figure 12, the axle collar 84 is installed on the pole 36 through compression spring 90, and like this, the power between the engaging gear 80 and first gear 76 and second gear 78 just can not pinned first gear 76 and second gear 78.The purpose of acquiring the adjustable axle collar 91 is the compression of its adjustable springs 90.The purpose of acquiring the adjustable axle collar 93 is the point of engagement of its scalable engaging gear and first gear 76 and second gear 78.

Pole 36 is pulled downwards under the driving of motor 72, but before closed, can stop at a point, and reason is that free-wheel clutch makes the driving disk 74 can be to rotate with motor 72 opposite directions.

Shown in figure 13, when pulling downwards of pole 36 quilts and hood closure, the axle collar 84 contacts with the lever that spring is housed 82; Impel engaging gear 80 to move down and mesh first gear 76 and second gear 78; Both are locked together, thereby direct drive power is transferred to driving disk 74 from motor 72, walk around free-wheel clutch; Cause that driving disk 74 rotates; Pull pole 36 with further downward, thereby drive hood 16 closures accurately, get up with regard to cavity seal like this and will add hot air to be retained in the chamber.

Shown in figure 14; Motor 72 is fixed in metal sheet 81; This metal sheet is installed on the bearing 86 and by 88 supports of spring pivotally; Like this, when engaging gear 80 pins first gears 76 with second gear 78, motor 72 can with the direction opposite with the spring power on pivot, rotate clamp hood 16 with it closed and accurately sealed chamber 14 also reservation add hot air.In case the rotation of motor 72 reaches predetermined amount, will activate limit switch motor 72 is shut down.

Film is through after the contraction of Preset Time, and such as 0.7 second to 1.0 seconds, motor 72 was opened hood 16 with reversing.Moved one section enough distance in case the lever 82 of spring is housed, engaging gear 80 promptly breaks away from from first gear 76 and second gear 78, to discharge driving disk 74 it can be rotated, and through free-wheel clutch, pole 36 is lifted, thereby discharges hood 16.

Should be understood that S. A. hood driving device 70 comprises a plurality of assemblies (extremely shown in Figure 9 like Fig. 6) that relate to hood driving device 60, with the operation of auxiliary drive, can needn't use the king-sized motor of power like this.In this regard, shown in figure 14, what spring 68 played is exactly the effect of auxiliary hood driving device 70.

Should be understood that a plurality of embodiment of the present invention provide a kind of semi-automatic artificial feeding chamber shrink packaging machine, can behind cutter sealing of L formula envelope and cutting shrink film, automatically product be placed on the center of shrink wrapping chamber.The distributing outlet roller conveyer of the embodiment of the invention has reduced the consumption of shrink film, has reduced ST and energy consumption simultaneously.In addition, the hood driving device of the embodiment of the invention provides a kind of easy mechanical solution, and this scheme has strengthened the operator to be lifted automatically and fall the process safe coefficient at hood, and is applicable to and is applied in other field.

Only by way of example embodiment is described, can allow in the scope of following claims, to make amendment.

Claims

1. a chamber shrink packaging machine comprises: the vertical fuselage that defines the chamber bottom; Hood, said hood have the L formula envelope cutter that forms integral body and laterally engage with hinge with fuselage with hood, when hood is fallen, and formation chamber top; The airheater that adds hot air is provided to chamber; Be installed in the roller conveyer on the fuselage; Under initial condition, this roller conveyer is used to prop up product to be packaged in the chamber, when hood is fallen; Outside sealing of L formula envelope cutter and cutting products in the process of heat shrink films; Said product is closely adjacent at vertical and horizontal and L formula envelope cutter, and its middle machine body has defined the horizontal ventilation flue of chamber bottom vertical and horizontal, guides into around L formula envelope cutter and the product in order to will add hot air.

2. machine according to claim 1, wherein the ventilation flue is centered around around the roller conveyer, makes to add hot air and flow around it.

3. machine according to claim 1 and 2, wherein the ventilation flue is made up of the elongated groove of level.

4. a chamber shrink packaging machine comprises: the vertical fuselage that defines the chamber bottom; Hood, said hood have the L formula envelope cutter that forms integral body and laterally engage with hinge with fuselage with hood, when hood is fallen, and formation chamber top; The airheater that adds hot air is provided to chamber; Be installed in the roller conveyer on the fuselage, under initial condition, this roller conveyer is used to prop up product to be packaged in the chamber; When hood was fallen, in the process of heat shrink films, said product was closely adjacent with L formula envelope cutter at vertical and horizontal outside cutter sealing of L formula envelope and cutting products; Wherein the roller conveyer has a plurality of parallel rollers; But said roller lateral drift and rotation are sealed cutter with product vertical and horizontal ground from the L formula then and are transported to the chamber center, make to add hot air and be centered around around the product; The film of shrink wrapped outside product; Wherein when hood lifted, a plurality of rollers are not deflection and rotation laterally, and the product end wise that at last shrink pack is installed transfers out chamber.

5. machine according to claim 4; The rotation between the parallel siding track of two row of wherein a plurality of rollers is also supported lateral drift; Wherein a siding track is fixed in fuselage, and another siding track article one siding track relatively vertically moves, thereby makes said a plurality of roller collective transverse deflection.

6. machine according to claim 5, wherein an end of each roller can rotate and through the spring lateral drift be installed in fixedly on the siding track, the other end can rotate and be installed in longitudinal sliding on the oval-shaped base in the removable siding track.

7. a chamber shrink packaging machine comprises: the vertical fuselage that defines the chamber bottom; Hood, said hood have the L formula envelope cutter that forms integral body and laterally engage with hinge with fuselage with hood, when hood is fallen, and formation chamber top; The airheater that adds hot air is provided to chamber; Be installed in the roller conveyer on the fuselage; Under initial condition, this roller conveyer is used to prop up product to be packaged in the chamber, when hood is fallen; In the process of heat shrink films, said product is closely adjacent with L formula envelope cutter at vertical and horizontal outside cutter sealing of L formula envelope and cutting products; And the hood driving device, the purpose of wherein acquiring the hood driving device is that it can support the weight of hood when hood is fallen, be clamped in make position with hood then.

8. machine according to claim 7; Wherein the hood driving device comprises in order to support the pole of hood; This pole be used to prevent pole move and be equipped with crossing of spring the lever of fulcrum center-point be coupled, thereby support the weight of hood, like this; When hood was fallen, this lever can be left behind pole to clamp hood in make position.

9. machine according to claim 8, the lever of wherein having crossed the fulcrum center-point is loaded by the tension spring that is fixed on the fuselage.

10. according to any described machine in the claim 7 to 9, wherein this hood driving device is used to fall hood through overdriving, and this hood driving device comprises free-wheel clutch, can realize the idle running lifting of hood.

11. machine according to claim 10; Further comprise the transmission gear that is fixed on the motor, be fixed on the free-wheel clutch free gear and with the fixing transmission gear and the engagement device of free gear rotational fixation, the propulsive effort that produces with the transmission motor makes hood decline.

12. machine according to claim 11, wherein meshing device is gear, and said gear can contact fixed gear wheel and free gear.

13. machine according to claim 12, wherein engaging gear can be realized engagement through hood is moved to make position from initial upright position through configuration.

14. according to any described machine in the claim 10 to 13, wherein the hood driving device drives through the deceleration motor.

15. according to the machine of claim 14, wherein this motor can be installed on the pedestal that spring is housed and can on pivot, rotate, motor can move with the direction of spring reverse movement when being in closure state with convenient hood, so that clamp hood in make position.

16., further comprise the controller that is used to control the hood driving device according to any described machine in the claim 10 to 15.

17., further comprise the controller that is used for control air temperature booster and roller conveyer according to any described machine in the aforementioned claim.