CN103241400B

CN103241400B - Shrink wrapping system

Info

Publication number: CN103241400B
Application number: CN201310058630.XA
Authority: CN
Inventors: 韩炅勋; 魏政褙
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2012-02-01
Filing date: 2013-02-01
Publication date: 2016-09-14
Anticipated expiration: 2033-02-01
Also published as: EP2623422A1; CN103241400A; KR20130089035A; EP2623422B1; US20130192176A1; PL2623422T3

Abstract

The invention discloses a kind of shrink wrapping system, the packaging unit of described shrink wrapping system shortens the time needed for packaging process.In order to realize this purpose, described packaging unit includes: four eyelid retractors, is arranged at the both sides transmitting carrier；Two lifters, are supported by described four eyelid retractors, thus can move up and down；Four telescopic arms, are combined with said two lifter, thus can along transmit carrier the direction of motion move and can elongated laterally and retract.

Description

Shrink wrapping system

Technical field

The exemplary embodiment of the disclosure relates to a kind of shrink wrapping system, wherein, utilizes shrink film to pack The household electrical appliance of such as refrigerator and washing machine.

Background technology

It is said that in general, it is a kind of by utilizing shrink film to cover product, then by product for shrink-wraping Supply hot-air makes the method packing product that shrink film is shunk.Recently, this shrink wrapping method is Using Low Density Polyethylene (LDPE) film, described low density polyethylene films has harmful substance hardly, And reusable edible.Therefore, LDEP film has been marked as environmentally friendly packing method, this packaging Method instead of the traditional method utilizing carton to pack product.

Such shrink wrapping method can be divided into following methods according to packaging direction: laterally utilizes Shrink film covers the method for product；Utilize shrink film to the method covering product in a downward direction.

Generally, use the packaging unit of downward covering method to include: an eyelid retractor, be arranged on transmission and produce At the side of the direction of motion transmitting carrier of product；One lifter, is combined with eyelid retractor, with upwards With move downward；Two cantilevers, are combined with lifter, with transmit carrier the direction of motion on forward And rearward movement；Four arms, are combined with two cantilevers, with vertical with the direction of motion transmitting carrier Direction on be moved forward and backward；Four grip fingers, are separately positioned on the end of four arms, with folder Hold shrink film.

Therefore, only move downward when lifter so that product is retracted film and covers and move upward Time, the product being retracted film covering can be transferred into hot air shrinkage unit by transmitting carrier.Additionally, Owing to one end of the most each cantilever is fixed to lifter, thus when when with high speed operation lifter with height When speed is downwardly and upwardly moved, cantilever may vibrate and may limit the motion up and down of lifter, Thus reduce the efficiency of shrink film method.

Summary of the invention

Therefore, the one side of the disclosure is to provide a kind of shrink wrapping system, described shrink wrapping system Shorten and utilize shrink film cover product and pass through with the method utilizing shrink film to cover product in a downward direction Transmit carrier by be retracted film cover Product transport to hot air shrinkage unit process needed for time Between.

Other aspect the most of this disclosure is described to a certain extent, the disclosure Other aspect will become obvious to a certain extent from describe, or can obtain from the enforcement of the disclosure Know.

According to the one side of the disclosure, a kind of shrink wrapping system includes: transmit carrier, transmits product； Feed unit, the shape feeding shrink film continuously of the sack to be wound on roller；Open unit, receive From the shrink film of described feed unit feeding, and sprawl described shrink film；Packaging unit, by clamping Utilize shrink film to cover product while shrink film along in downward direction moving of product；Shrink unit, Using hot air shrinkage to cover the shrink film of product, wherein, described packaging unit includes: four eyelid retractors, It is arranged in the both sides of described transmission carrier；Two lifters, are supported by described four eyelid retractors, and quilt It is arranged to move up and down；Four telescopic arms, be combined with said two lifter thus can be in left-right direction Slide, and be configured to extend along forward direction and can retract in a rearwardly direction；Four grip fingers, point It is not arranged at the front end of described four telescopic arms.

Said two lifter can be moved upwardly or downwardly together.

Described four telescopic arms can extend together or retract.

When described open unit sprawl described shrink film time, described telescopic arm can extend along forward direction, from And described grip finger can clamp described shrink film.

Then clamp described shrink film at described lifter at described grip finger utilizes described shrink film to cover product After having moved downward in the case of product, described telescopic arm can be retracted in a rearwardly direction.

When described lifter moves upward in the case of described telescopic arm is retracted in a rearwardly direction, described Transmission carrier is movable, so that the product being retracted film covering is sent to described contraction unit, and will not The next product being retracted film covering is sent to described packaging unit.

Each rail plate that may each comprise in described lifter, described rail plate is arranged in left-right direction, Each sliding shoe that includes in described telescopic arm, described sliding shoe is combined with described rail plate to slide.

Each in described lifter may also include little gear and drive motor, described drive motor institute State little gear, each spur gear that may also include in described telescopic arm, described spur gear and described little gear Engagement is to receive driving force.

Described telescopic arm each comprises the steps that the first arm-piece, is combined with described lifter；Sliding part, Be combined with described first arm-piece, thus can move along the longitudinal direction relative to described first arm-piece；Second arm Part, is combined with described sliding part, thus can move along the longitudinal direction relative to described sliding part.

According to another aspect of the present disclosure, a kind of shrink wrapping system includes: transmit carrier, transmits and produces Product；Feed unit, the shape feeding shrink film continuously of the sack to be wound on roller；Open unit, Receive the shrink film from described feed unit feeding and sprawl described shrink film；Packaging unit, including two Lifter and four telescopic arms, said two lifter is arranged to move up and down, described four telescopic arms Be combined with described lifter, with can slide in left-right direction and be arranged to can along forward direction elongation and can edge Backward directions are retracted；Shrink unit, use hot air shrinkage to cover the shrink film of product.

When described open unit sprawl described shrink film time, described packaging unit can be fixing feelings at product Move downward while clamping described shrink film under condition, thus utilize described shrink film to cover described product.

When described product is retracted film covering, described packaging unit moves upward, meanwhile, by described receipts The product that contracting film covers can be transported to described shrink film, and the next product not being retracted film covering can It is transported to described packaging unit.

According to another aspect of the present disclosure, a kind of packaging unit includes: four eyelid retractors, is arranged in transmission At the both sides transmitting carrier of product；Two lifters, are supported by described four eyelid retractors and are arranged to Can move up and down；Four telescopic arms, are combined with said two lifter, thus can slide in left-right direction, And it is configured to and in a rearwardly direction regracting extending along forward direction；Four grip fingers, are respectively provided with At the front end of described four telescopic arms.

According to another aspect of the present disclosure, it is provided that the shrink wrapping system of a kind of time shortening packaging process, Described shrink wrapping system includes: packaging unit, by while clamping shrink film along the direction of product Move and utilize shrink film to cover product；Shrink unit, use hot air shrinkage to cover the contraction of product Film；Wherein, when product is retracted film covering, described packaging unit moves upward, and, is retracted meanwhile The product that film covers is sent to described contraction unit, and another product not being retracted film covering is passed Deliver to described packaging unit.

Accompanying drawing explanation

By the description carried out embodiment below in conjunction with the accompanying drawings, these and/or other aspect of the disclosure is incited somebody to action Can become substantially with it is more readily appreciated that in the accompanying drawings:

Fig. 1 is the schematic representation of the shrink wrapping system of the exemplary embodiment according to the disclosure；

Fig. 2 shows the feed unit of Fig. 1, opens the front view of unit and packaging unit；

Fig. 3 is the perspective view of the packaging unit of Fig. 1；

Fig. 4 shows the decomposition of the attachment structure between lifter and the telescopic arm of the packaging unit of Fig. 1 Perspective view；

Fig. 5 shows the lifter of the packaging unit of Fig. 1 and the assembled perspective view of telescopic arm；

Fig. 6 shows the decomposition diagram of the structure of the telescopic arm of the packaging unit of Fig. 1；

Fig. 7 shows the assembled perspective view of the structure of the telescopic arm of the packaging unit of Fig. 1；

Fig. 8 to Figure 12 shows the packaging unit by Fig. 1 of the exemplary embodiment according to the disclosure Utilize the exemplary diagram of the process of shrink film covering product.

Detailed description of the invention

Now exemplary embodiment of this disclosure is described in detail, the disclosure shown in the drawings The example of exemplary embodiment, wherein, identical label indicates same parts all the time.

Fig. 1 is the schematic representation of the shrink wrapping system of the exemplary embodiment according to the disclosure, Fig. 2 Showing the feed unit of Fig. 1, open the front view of unit and packaging unit, Fig. 3 is the bag of Fig. 1 The perspective view of dress unit.

Referring to figs. 1 through Fig. 3, according to the exemplary embodiment of the disclosure, shrink wrapping system 1 comprises the steps that Transmit carrier 20, transmit product 10；Alignment unit 21, makes product 10 align；Feed unit 30, Feeding shrink film 60；Open unit 40, sprawl by the shrink film 60 of feed unit 30 feeding；Packing list Unit 100, in clamping by moving downward while opening the shrink film 60 that unit 40 is sprawled, to utilize Shrink film covers product 10；Shrink unit 50, use hot-air to make to be received by packaging unit 100 The shrink film 60 of the product 10 that contracting film 60 covers is shunk.

According to embodiment, transmit carrier 20 and can transmit product 10, so that product 10 can in turn warp Cross alignment unit 21, packaging unit 100 and shrink unit 50.

Product 10 can be illustratively the household electrical appliance of such as refrigerator or washing machine.Additionally, can be according to product The appropriately sized amendment of product 10 is according to the representative of the shrink wrapping system 1 of the exemplary embodiment of the disclosure Property component devices (such as, packaging unit 100, shrink unit 50 etc.) design specification, the most no matter The size of product 10 the most all can apply shrink wrapping system 1.

According to the exemplary embodiment of the disclosure, in top edge, lower limb and the lateral edges difference of product 10 In the case of being buffered the covering of material (not shown), product 10 can enter shrink wrapping system 1.

When product 10 enters alignment unit 21, alignment unit 21 can make product 10 at middle section Alignment, but, the disclosure is not limited to this.That is, alignment unit 21 can make product 10 transmit transport Align at the region of device 20 rather than middle section.Product 10 through alignment unit 21 can arrive bag Dress unit 100, packaging unit 100 utilize shrink film 60 while covering product 10, product 10 Can stop in packaging unit 100 at short notice.

Feed unit 30 may be arranged at the side of packaging unit 100, and shrink film 60 can be wound onto roller On then be fed to open unit 40 by feed unit 30.Feed unit 30 comprises the steps that film feeding Roller (not shown), makes shrink film 60 move；Film feeding motor (not shown), drive membrane feed rolls is (not Illustrate), the shrink film 60 moved by film feed rolls (not shown) can pass through at least one buffer 33 are fed to open in unit 40.

The shrink film 60 of the exemplary embodiment according to the disclosure can have a shape of sack, thus an end The part in portion is open, and another part of shrink film 60 closing, thus to wrap up in attached form (for example, referring to Figure 10 and Figure 11) covers product, and can shrink film 60 cover product 10 it It is cut off by sickle (not shown) or by the method for part pre-cutting afterwards.Additionally, shrink Film 60 can be wound onto on roller with the state flatly folded.According to embodiment, shrink film 60 is permissible For other shapes or otherwise winding, therefore, the disclosure is not limited to above.Passing through Fig. 2 In the part shown by optional double dot dash line in show the schematic cross-sectional shape of shrink film 60.This Outward, shrink film 60 can be Low Density Polyethylene (LDPE) film, and described LDPE film has hardly Harmful substance and can recycling.

Open unit 40 and can include horizontal pane 41 and multiple blade 42 and 43 of opening, wherein, multiple Open blade 42 and 43 hinge to be attached in horizontal pane 41, from but rotatable, and use hot-air Shrink film 60 is made to be attached to open blade 42 and 43.It is attached to multiple open blade 42 in shrink film 60 After 43, multiple blades 42 and 43 of opening can rotate to opposite side to open shrink film 60.So, Open unit 40 to may be provided on packaging unit 100, and by eyelid retractor 200a, 200b, 200c and 200d (with reference to Fig. 3) supports.

Packaging unit 100 can move downward while clamping the shrink film 60 that the unit 40 that is opened is opened, Thus utilize shrink film 60 to be covered by product 10.The packaging unit of the exemplary embodiment according to the disclosure 100 comprise the steps that four eyelid retractors 200a, 200b, 200c and 200d, are arranged in transmission carrier 20 Both sides at；Two lifter 300a and 300b, are propped up by eyelid retractor 200a, 200b, 200c and 200d Support, and be configured to move up and down；Four telescopic arms 400a, 400b, 400c and 400d, Be combined with two lifter 300a and 300b, and highlight towards transmitting carrier 20.

Eyelid retractor 200a, 200b, 200c and 200d can be formed with the shape by the post of ground supports, But, the disclosure is not limited to this.That is, eyelid retractor 200a, 200b, 200c and 200d can be to remove Other shapes outside the shape of post are formed.Additionally, lifter 300a and 300b can be set to along propping up Support device 200a, 200b, 200c and 200d can move up and down.Can be come real by multiple structure The motion up and down of existing lifter 300a and 300b, such as, can pass through pouring weight and chain (attached Not shown in figure) realize.

Such as, together with when two lifter 300a with 300b can cover product 10 utilizing shrink film 60 Move downward, it is possible to be retracted after film 60 covers at product 10 and moved upwardly together.But, Above-mentioned is only exemplary, and therefore, the disclosure is not limited to this.

Each lifter in lifter 300a and 300b can be with four telescopic arms 400a, 400b, 400c Combine with two telescopic arms in 400d, and telescopic arm 400a, 400b, 400c and 400d can be with two Lifter 300a and 300b is combined into and can forwardly and rearwardly transport in the direction of motion transmitting carrier 20 Dynamic.That is, each telescopic arm 400a, 400b, 400c and 400d can tie with lifter 300a and 300b Close, thus be slidably in left direction and right direction.

Telescopic arm 400a, 400b, 400c and 400d can be set to along longitudinally (i.e., forward or backward) Elongation or retraction, can clamp grip finger 500a, 500b, 500c and 500d of shrink film 60 (such as Fig. 4 Shown in) can be separately positioned at the front end of telescopic arm 400a, 400b, 400c and 400d.

, four telescopic arms 400a, 400b, 400c and 400d can be at telescopic arm 400a, 400b, 400c Extend together with when 400d clamps shrink film 60, then utilize shrink film 60 to cover product 10, and can After having utilized shrink film 60 to cover product 10 at telescopic arm 400a, 400b, 400c and 400d Retract together.But, above-mentioned is only exemplary, and therefore, the disclosure is not limited to this.

The exemplary embodiment according to the disclosure the packaging unit 100 with above-mentioned structure (such as, With reference to Fig. 4) in, lifter 300a and 300b moves up and down, telescopic arm 400a, 400b, 400c and 400d is along sliding with right direction to the left and along forward direction elongation and retracting in a rearwardly direction.Cause This, be separately positioned on the grip finger 500a at the front end of telescopic arm 400a, 400b, 400c and 400d, 500b, 500c and 500d can have three degree of freedom.

Additionally, when telescopic arm 400a, 400b, 400c and 400d retract, telescopic arm 400a, 400b, The contraction in length of 400c and 400d, therefore, can telescopic arm 400a, 400b, 400c and 400d to The vibration of telescopic arm 400a, 400b, 400c and 400d is reduced when going up and move downward.

Hereinafter, will be described in detail with reference to the accompanying drawings lifter 300a and 300b and telescopic arm 400a, 400b, Attachment structure between 400c and 400d and the elongation of telescopic arm 400a, 400b, 400c and 400d and Retraction structure.

Fig. 4 shows the decomposition diagram of the attachment structure between the lifter in Fig. 1 and telescopic arm, Fig. 5 shows the lifter of the packaging unit of Fig. 1 and the assembled perspective view of telescopic arm, and Fig. 6 is to illustrate The decomposition diagram of the structure of the telescopic arm of the packaging unit of Fig. 1, Fig. 7 shows the packaging of Fig. 1 The assembled perspective view of the structure of the telescopic arm of unit.

Due to the exemplary embodiment according to the disclosure packaging unit 100 two lifter 300a and Attachment structure between 300b and four telescopic arms 400a, 400b, 400c and 400d is identical, so will Only describe the attachment structure between lifter 300b and telescopic arm 400c and 400d, and will be omitted other The retouching of attachment structure (that is, the attachment structure between lifter 300a and telescopic arm 400a and 400b) State.

As shown in Figures 4 and 5, rail plate 310 and 311 can be along transmitting being disposed longitudinally on of carrier 20 On lifter 300b, with support telescopic arm 400c and 400d and the cunning of guiding telescopic arm 400c and 400d Dynamic, telescopic arm 400c and 400d can include the sliding shoe 410 that is combined with rail plate 310 and 311 and 411。

Longitudinally disposed spur gear 420 and 421 along rail plate 310 and 311 can be fixed to sliding shoe 410 and 411.Engage the little gear 320 to transmit driving force with spur gear 420 and 421, drive little tooth The spur gear pincers 340 and 341 driving motor 330 and support spur gear 420 and 421 of wheel 320 May be provided on lifter 300b.

Two spur gears 420 and 421 can engage with the upper and lower of a little gear 320, with from one Individual little gear 320 receives driving force.Therefore, when little gear 320 rotates with a direction, telescopic arm 400c Can be near moving each other with 400d, when little gear 320 rotates with other direction, telescopic arm 400c Can remotely from one another move with 400d.

By above-mentioned structure, telescopic arm 400c and 400d can be supported by lifter 300b, and can be along left Slide to right direction.

It follows that stretching of telescopic arm 400a, 400b, 400c and 400d will be described with reference to Fig. 6 and Fig. 7 Length and retraction structure.Owing to elongation and the retraction structure of telescopic arm 400a, 400b, 400c and 400d are Identical, so elongation and the retraction structure of telescopic arm 400c will only be described, and will omit other elongations and The description of retraction structure (that is, the elongation of telescopic arm 400a, 400b and 400d and retraction structure).

Telescopic arm 400c comprises the steps that the first arm-piece 430, is fixed to sliding shoe 410 (with reference to Fig. 4)；Sliding Moving part 440, is combined with the first arm-piece 430, with can be along lengthwise movement；Second arm-piece 450, with sliding part 440 combine, with can be along lengthwise movement.

Supporting guide 443 and 444 can be longitudinally arranged in the both side surface of sliding part 440, with support The grip block 434 and 454 that guide rail 443 and 444 combines slidably may be provided at the first arm-piece 430 He In second arm-piece 450.Therefore, the second arm-piece 450 can be slidingly supported by sliding part 440, slides Part 440 can be slidingly supported by the first arm-piece 430.

Transmit the first little gear 431 of driving force to sliding part 440 and drive the first little gear 431 First drives motor 432 to may be provided in the first arm-piece 430.

Engage with reception straight from the second of the driving force of the first little gear 431 transmission with the first little gear 431 Gear 441 and driving force is sent to the two pinion 442 of the second arm-piece 450 may be provided at sliding part On 440.When sliding part 440 is along lengthwise movement, two pinion 442 be fixed to the first arm-piece 430 The first spur gear 433 engage and rotate.

Engage with reception straight from the 3rd of the driving force of two pinion 442 transmission the with two pinion 442 Gear 451 may be provided in the second arm-piece 450.As it has been described above, the first spur gear 433 and the 3rd straight-tooth Wheel 451 all can engage with two pinion 442.

By above-mentioned structure, the second arm-piece 450 relative to the first arm-piece 430 along lengthwise movement, therefore, Telescopic arm 400c along forward direction elongation or can retract in a rearwardly direction.

Fig. 8 to Figure 12 shows the packaging unit by Fig. 1 and utilizes shrink film to cover the process of product Diagram.Hereinafter, by with reference to Fig. 8 to Figure 12 describe according to the exemplary embodiment of the disclosure by bag Dress unit utilizes shrink film to cover the process of product.

Fig. 8 shows the telescopic arm of packaging unit 100 before utilizing shrink film 60 to cover product 10 The state that 400a, 400b, 400c and 400d extend the most forward.As shown in Figure 8, when opening unit 40 when sprawling shrink film 60, and telescopic arm 400a, 400b, 400c and 400d maximally extend and stretch with clamping Contracting film 60.

In this state, shrink when the grip finger of telescopic arm 400a, 400b, 400c and 400d clamps During film 60, telescopic arm 400a, 400b, 400c and 400d are in a rearwardly direction from maximum elongation position somewhat Retracting in ground, film 60 therefore can be made to be sprawled tightly, as shown in Figure 9.

Hereinafter, when lifter 300a and 300b is at the folder of telescopic arm 400a, 400b, 400c and 400d When moving downward under the state of chela clamping shrink film 60, as shown in Figure 10, such as, product 10 can quilt Shrink film 60 covers.

When product 10 be retracted film 60 cover time, telescopic arm 400a, 400b, 400c and 400d Retract in a rearwardly direction, as shown in figure 11.Therefore, as shown in figure 12, lifter 300a and 300b Move upward when telescopic arm 400a, 400b, 400c and 400d retract, meanwhile, transmit fortune Defeated device 20 moves, and therefore, the product 10 being retracted film 60 covering can be transferred into contraction unit 50 (ginseng According to Fig. 1), be not retracted film 60 cover next product 10 can be transferred into packaging unit 100 it Under region.

Therefore, although in shrink wrapping system, the most fully move upward at lifter and transmit afterwards Carrier moves with conveying products, but in the shrink wrapping system of the exemplary embodiment according to the disclosure In 1, can while lifter 300a and 300b moves upward conveying products, it is therefore possible to shorten bag The time in dress cycle.

From the description above it is evident that in the shrink wrapping system of the exemplary embodiment according to the disclosure In, the product being retracted film covering can be transferred into hot air shrinkage unit, simultaneously by transmitting carrier Packaging unit has moved downward and has utilized shrink film to move upward after being covered by product at packaging unit, It is therefore possible to shorten the time needed for product packaging process.

Additionally, due to can wrap according to the packaging unit of the shrink wrapping system of the exemplary embodiment of the disclosure Include two lifters supported by four eyelid retractors and each lifter in two lifters is combined Two telescopic arms that length can shorten, so can reduce two arms when lifter moves up and down Vibration.

Although having shown that and describe some embodiments of the disclosure, it will be understood by those skilled in the art that Without departing from the principle of the disclosure and the situation of spirit being limited its scope by claim and equivalent thereof Under, these embodiments can be modified.

Claims

1. shrink-wrap a system, including:

Transmit carrier, transmit product；

Feed unit, the continuously shrink film of the shape of the sack that feeding is wound on roller；

Open unit, receive the shrink film from feed unit feeding, and sprawl shrink film；

Packaging unit, by utilizing contraction along in downward direction moving of product while clamping shrink film Film covers product；

Shrink unit, use hot air shrinkage to cover the shrink film of product,

Wherein, packaging unit includes:

Four eyelid retractors, are arranged at the both sides transmitting carrier；

Two lifters, are supported by described four eyelid retractors, and are configured to up and down Motion；

Four telescopic arms, with said two lifter be combined into can along to the left with right direction slide, and It is configured to along forward direction elongation and can retract in a rearwardly direction；

Four grip fingers, are separately positioned at the front end of described four telescopic arms,

Wherein, when shrink film is covered on product by packaging unit, lifter is on telescopic arm edge rearward Moving upward in the case of retracting, meanwhile, the product being retracted film covering is transported to shrink unit, And the next product not being retracted film covering is transported to packaging unit.

Shrink wrapping system the most according to claim 1, wherein, said two lifter together to Go up or move downward.

Shrink wrapping system the most according to claim 1, wherein, described four telescopic arms are stretched together Length or retraction.

Shrink wrapping system the most according to claim 1, wherein, sprawls shrink film when opening unit Time, telescopic arm extends along forward direction, thus grip finger clamping shrink film.

Shrink wrapping system the most according to claim 4, wherein, clamps at grip finger at lifter After then shrink film utilizes shrink film to move downward in the case of covering product, telescopic arm is along backward Retract in direction.

Shrink wrapping system the most according to claim 1, wherein:

Each lifter all includes along the rail plate arranged with right direction to the left；

Each telescopic arm all includes the sliding shoe being combined to carry out sliding with rail plate.

Shrink wrapping system the most according to claim 6, wherein:

Each lifter also includes the driving motor of little gear and driving pinion；

Each telescopic arm also includes engaging with little gear to receive the spur gear of driving force.

Shrink wrapping system the most according to claim 1, wherein, each telescopic arm all includes:

First arm-piece, is combined with lifter；

Sliding part, is combined into can move in the forward and backward directions relative to the first arm-piece with the first arm-piece；

Second arm-piece, is combined into can move in the forward and backward directions relative to sliding part with sliding part.

9. shrink-wrap a system, including:

Transmit carrier, transmit product；

Open unit, receive the shrink film from feed unit feeding and sprawl shrink film；

Packaging unit, including two lifters and four telescopic arms, said two lifter is configured to Enough up and down move, described four telescopic arms and said two lifter be combined into can along to Left and right direction is slided, and is configured to along forward direction elongation and can retract in a rearwardly direction；

Shrink unit, use hot air shrinkage to cover the shrink film of product,

Shrink wrapping system the most according to claim 9, wherein, sprawls contraction when opening unit During film, packaging unit moves downward while clamping shrink film in the case of product is static, thus sharp Product is covered by shrink film.