CN108996306B

CN108996306B - A kind of device for plastics packed cutting preservative film

Info

Publication number: CN108996306B
Application number: CN201811099781.9A
Authority: CN
Inventors: 蔡群; 吴军华; 唐立帆
Original assignee: Individual
Current assignee: Changchun Honghai Industrial Co ltd
Priority date: 2018-09-20
Filing date: 2018-09-20
Publication date: 2019-03-29
Anticipated expiration: 2038-09-20
Also published as: CN109911686A; CN109911685A; CN108996306A; CN109911686B; CN109911685B

Abstract

The invention belongs to cutting technique fields, more particularly to a kind of device for plastics packed cutting preservative film, it includes bottom plate, elastic baffle, executing agency, pushing block, U-shaped cuts platform, second slide bar etc., wherein the first elastic drum and the second elastic drum by extrusion fit by preservative film from the outlet square hole for reaching square shell in square shell, convenient for users to taking out preservative film from cutter device, avoids traditional Casing with means for cutting the preservation film and need frequently to open the trouble that Casing with means for cutting the preservation film lid takes preservative film.For cutter device of the invention after the completion of cutting, the first elastic drum and the second elastic drum can automatically move reset to be again pressed against preservative film, so that next time is reused, considerably increase the convenience of operation.In addition, cutter device of the invention can avoid to a certain extent the preservative film in cutter device from being contaminated by dust, extends the clean time of preservative film in cutter device, ensure that the safety of next packaged food.

Description

A kind of device for plastics packed cutting preservative film

Technical field

The invention belongs to cutting technique field more particularly to a kind of devices for plastics packed cutting preservative film.

Background technique

Preservative film is a kind of plastic packing product, and preservative film is mainly used to food, ornaments, daily necessity, gift box etc. It is packed；Especially in field of food, the use of preservative film is very frequent.It is frequently found in life, works as preservative film After packaging food, to cut preservative film without conveniently cutting tool, to solve the trouble that preservative film is cut, on the market There is relatively good preservative film cutting device --- cutting box.Popular cutting box is during use on the market, it is always necessary to The lid of cutting box is opened, is come to could pull out preservative film from fresh-keeping membrane cylinder, it is then included with cutting box again Cutting tool preservative film is cut；So, the cutting box of prevalence just has a trouble on the market, that is, fresh-keeping Film needs to open the lid of cutting box every time when pulling out packing article.Lid is frequently opened for this needs For cutting box, the frequent packaging that it is used for supermarket just has certain trouble, in order to avoid that will be always in use The lid of cutting box, so a kind of fresh-keeping film cutting for not needing frequently to open Casing with means for cutting the preservation film lid will be designed Box.In addition, having a kind of preservative film cutting device for not needing to open lid, after the completion of preservative film cutting, the guarantor that has been cut Fresh film outer end is often exposed in outside air, after being placed in outside air for a long time, the exposed guarantor outside cutter device Fresh film is easily absorbing many dusts, this brings certain pollution to food packaging instead；And cutter device of the invention exists The pollution for reducing dust in outside air in certain aspect, enables the more environmentally-friendly use of preservative film.

The present invention design a kind of device for plastics packed cutting preservative film solve the problems, such as it is as above.

Summary of the invention

To solve drawbacks described above in the prior art, the present invention discloses a kind of dress for plastics packed cutting preservative film It sets, it adopts the following technical solutions to realize.

In the description of the present invention, it should be noted that the indicating positions such as term "inner", "lower", "upper" or position are closed System be orientation based on the figure perhaps positional relationship or the invention product using when the orientation or position usually put Set relationship, it is only for convenient for the description present invention and simplify description, rather than the device or element of indication or suggestion meaning must There must be specific orientation, be constructed or operated with specific orientation, therefore be not considered as limiting the invention.In addition, art Language " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.

A kind of device for plastics packed cutting preservative film, it is characterised in that: it include bottom plate, square shell, cover board, Elastic baffle, pushes sliding slot, executing agency, pushing block, the first support plate, the second support plate, bar shaped guide rail, outlet at cutting sliding slot Square hole, the first guide rail, the second guide rail, U-shaped push plate, first push item, second to push item, L-type plate, the first elastic drum, second Elastic drum, fixed strip, the U-shaped platform, the first one-way clutch ring, the second one-way clutch ring, support rod, the first slide bar, second sliding cut Bar, the first arc elastic piece, the second arc elastic piece, T-type plate, guide block, third spring, first through hole, the second through-hole, indsole Square shell is installed on plate；Cover board is mounted on square shell far from one end of bottom plate；The side shell surface middle position of square shell is provided with Export square hole；Two elastic baffles are mounted in outlet square hole in a manner of symmetrically, and two elastic baffles it is relative to each other one End is in contact；It is provided with the cutting sliding slot of perforation on cover board and pushes sliding slot；Executing agency installs on the cover board；Bottom plate is far from square Symmetrically there are two the first support plates for installation on the upper surface of one end of the outlet square hole of shell；Two support rods are in a manner of symmetrically It is mounted in two the first support plates, and two support rods are located between two the first support plates；Bottom plate goes out close to square shell Symmetrically there are two the second support plates for installation on the upper surface of one end of mouth square hole；Two bar shaped guide rails are separately mounted to two Two support plates are far from one end of bottom plate.

The structure installed on two the second support plates side surface relative to each other is all the same, for wherein any one The side surface of two support plates: the first guide rail and the second guide rail are mounted on the side surface of the second support plate, and the first guide rail is located at The upper end of second guide rail；First guide rail is made of the first guide rail segmental arc and two the first guide rail straight sections, and the first guide rail arc The both ends of section are connected with two the first guide rail straight sections respectively；Second guide rail is by the second guide rail segmental arc a, the second guide rail segmental arc B, the second guide rail straight section a and the second guide rail straight section b is constituted；The arc of the radian of second guide rail segmental arc a and the second guide rail segmental arc b Spend it is identical, and the second guide rail segmental arc a and the second guide rail segmental arc b by up and down symmetrically in a manner of be distributed；Second guide rail segmental arc a On the second guide rail segmental arc b；The both ends of second guide rail segmental arc a are connected with the both ends of the second guide rail segmental arc b respectively It connects；One end junction of second guide rail segmental arc a and the second guide rail segmental arc b are connected with the second guide rail straight section a, other end connection Place is connected with the second guide rail straight section b；Pacify on second guide rail segmental arc a and the guide rail inner top surface of the second connection guide rail straight section b Equipped with the second arc elastic piece, and the one end of the second arc elastic piece far from the second guide rail straight section b is with the second guide rail segmental arc a's Guide rail inner top surface is connected, and the other end is not connected with the guide rail inner top surface of the second guide rail straight section b；Second guide rail segmental arc b with The first arc elastic piece is installed on the guide rail inner bottom surface of second connection guide rail straight section a, and the first arc elastic piece is separate One end of second guide rail straight section a is connected with the guide rail inner bottom surface of the second guide rail segmental arc b, the other end not with the second guide rail straight section The guide rail inner bottom surface of a is connected.

The both ends of first slide bar are separately mounted in two the first guide rails by way of being slidably matched；The two of second slide bar End is separately mounted in two the second guide rails by way of being slidably matched；It is symmetrically opened on first slide bar logical there are two first Hole；Two the first one-way clutch rings are mounted on the periphery of the first slide bar in a manner of symmetrically, and two the first one-way clutch Ring is located between two first through hole；The both ends of first elastic drum are separately mounted to the periphery of two the first one-way clutch rings On；Second through-hole there are two symmetrically being opened on second slide bar；Two the second one-way clutch rings are mounted on second in a manner of symmetrically On the periphery of slide bar, and two the second one-way clutch rings are located between two the second through-holes；The both ends of second elastic drum point It is not mounted on the periphery of two the second one-way clutch rings；First elastic drum is matched with the second elastic drum；Second is sliding Bar is matched with the first arc elastic piece and the second arc elastic piece respectively.

U-shaped push plate is made of stripe board and two side plates；One end of pushing block is mounted on the interposition of the stripe board of U-shaped push plate It sets on upper surface, the other end passes through the promotion sliding slot of cover board；Pushing block, which slides on, to be pushed in sliding slot；One end of T-type plate is mounted on U-shaped On the middle position side surface of the stripe board of push plate；T-type plate is located between two side plates of U-shaped push plate；There are two limits for T-type plate tool Position end, and two stripe boards of the positive stop end far from U-shaped push plate；Two positive stop ends of T-type plate are matched with executing agency；It is U-shaped to push away Two side plates of plate are mounted on a guide block, and two guide blocks are symmetrical；Two guide blocks are installed by way of being slidably matched In two bar shaped guide rails；One end of two third springs is separately mounted on two guide blocks, and the other end is separately mounted to two On the medial surface of bar shaped guide rail；Two third springs are located in two bar shaped guide rails；One end of two side plates of U-shaped push plate Place is mounted on one first promotion item；First in the same side pushes item, the first slide bar and the second slide bar, and first pushes item Across the corresponding first through hole of the first slide bar；First promotion item the second through-hole corresponding with the second slide bar matches；Two L-type plates One end be separately mounted to two side plates of U-shaped push plate and pushed far from corresponding first on one end of item, the other end is separately installed with Second pushes item；Second in the same side pushes item, the first slide bar and the second slide bar, and second pushes item to pass through the second slide bar phase The second through-hole answered；First in the same side pushes item and the second promotion item: first one end for pushing item to pass through the first slide bar Pushing item to pass through with second, one end of second slide bar is opposite, and the first promotion item passes through one end of the first slide bar and the second promotion item is worn One end of the second slide bar is crossed there are spacing and names the spacing for space D, hole of the space D less than the second through-hole in the second slide bar It is long.

It is U-shaped to cut platform and be separately mounted to be mounted in two the second support plates by two fixed strips；Fixed strip is located at corresponding Between second guide rail segmental arc a of the second guide rail and the second guide rail segmental arc b；Above-mentioned executing agency matches with U-shaped platform of cutting.

Fixed strip, the first promotion item and second in the same side push item: fixed strip is matched with space D.

Above-mentioned executing agency include ladder type sliding rail, cutting sliding block, U-shaped board, fixed plate, square type guide tube, pressing plate, cutting plate, First spring, ladder type sliding block, shifting block, is dialled end, stripe board, card slot, blade, sliding channel, inclined-plane, second spring at limited block, Wherein cut the sliding channel that perforation is provided in sliding block；It symmetrically opens there are two card slot the two sides of cutting sliding block；It is logical to cut sliding block The mode being slidably matched is crossed to be mounted in cutting sliding slot；Cutting plate is mounted on the sliding of cutting sliding block by way of being slidably matched In through slot, and the both ends of cutting plate are pierced by cutting sliding block；One end of cutting plate is equipped with blade, and the other end is equipped with pressing plate； Pressing plate is located on cover board；First spring is nested on cutting plate, and on one end installation pressing plate of the first spring, other end installation On cutting sliding block；It cuts and shifting block is installed on the side of sliding block；Ladder type sliding rail is mounted on the lower surface of cover board, and ladder type is sliding Rail is close to cutting sliding slot；Ladder type sliding block is mounted in ladder type sliding rail by way of being slidably matched；It is sliding that ladder type sliding block is pierced by ladder type One end of rail is equipped with U-shaped board；U-shaped board is made of stripe board and two by end is dialled；Shifting block is matched with two by end is dialled；Two Square type guide tube passes through fixed plate and is mounted in the stripe board of U-shaped board, and two square type guide tubes are dialled end far from U-shaped board；Two A limited block is separately mounted in two square type guide tubes by way of being slidably matched；It installs respectively one end of two second springs On two limited blocks, the other end is separately mounted on the bottom cylinder face of two square type guide tubes；Two second springs are located at two In a square type guide tube；Each limited block has inclined-plane far from one end of corresponding second spring.

Above-mentioned limited block has bevelled one end and matches with the positive stop end of T-type plate；When second spring is uncompressed, two It is S1 that limited block, which has the distance between bevelled one end,；The distance between two positive stop ends of T-type plate are S2；S1 is greater than S2.

Insert is matched with U-shaped platform of cutting.

Above-mentioned first elastic drum and the second elastic drum are matched with two elastic baffles.

The center of circle locating for the radian of the first guide rail segmental arc in above-mentioned first guide rail and the second guide rail in the second guide rail The center of circle locating for the radian of segmental arc a is concentric.

As the further improvement of this technology, above-mentioned elastic baffle is made of plastics.

As the further improvement of this technology, lubricating oil is coated on the inner wall of above-mentioned first guide rail and the second guide rail. It thus can smoothly be slided in the first guide rail convenient for the first slide bar, the second slide bar smoothly slides in the second guide rail.

As the further improvement of this technology, above-mentioned first arc elastic piece and the second arc elastic piece are spring steel plate system At.

As the further improvement of this technology, above-mentioned first elastic drum and the second elastic drum are made of rubber.

As the further improvement of this technology, above-mentioned third spring is extension spring；When third spring is not stretched, the Two slide bars are located in the second guide rail straight section a of the second guide rail, and the first slide bar is located in the corresponding first guide rail straight section of the first guide rail； The first elastic drum and the second elastic drum generate extrusion fit at this time, and limited block has limit of the bevelled one end not with T-type plate Position end generates extrusion fit.

As the further improvement of this technology, above-mentioned first spring is compressed spring；When the first spring is uncompressed, cut Plate cutter is cut to be located on the first guide rail.Such design is, is centered around in the first guide rail and slides in the first elastic drum When, the first elastic drum will not generate interference with blade.

As the further improvement of this technology, above-mentioned second spring is compressed spring；When second spring is uncompressed, limit Position block has bevelled one end and is pierced by corresponding square type guide tube.

As the further improvement of this technology, it further includes Wrap barrel and preservative film, wherein has on Wrap barrel and twines Around preservative film；The both ends of Wrap barrel are mounted on two support rods by way of rotatable engagement；Preservative film and the first bullet Property roller and the second elastic drum match；Preservative film is matched with blade；Preservative film is matched with U-shaped platform of cutting.

First elastic drum is matched with the second elastic drum；Second slide bar respectively with the first arc elastic piece and the second arc The effect that shape elastic piece matches: first, in the second guide rail straight section a that the second slide bar is located at the second guide rail, the first slide bar position In the corresponding first guide rail straight section of the first guide rail；The first elastic drum and the second elastic drum generate extrusion fit at this time；By The arc in the center of circle locating for the radian of the first guide rail segmental arc in the first guide rail and the second guide rail segmental arc a in the second guide rail The locating center of circle of degree is concentric, then sliding in the first slide bar along the first guide rail segmental arc in the first guide rail, the second slide bar edge The second guide rail segmental arc a sliding in the second guide rail when, need to continue dimension between the first elastic drum and the second elastic drum Hold extrusion fit.Second, in the second guide rail straight section b that the second slide bar is located at the second guide rail, the first slide bar, which is located at first, is led In the corresponding first guide rail straight section of rail；The first elastic drum and the second elastic drum still generate extrusion fit at this time.Third, When second slide bar slides into the second guide rail straight section b of the second guide rail from the second guide rail segmental arc a transition of the second guide rail, second is sliding Bar squeezes the second arc elastic piece, and the second arc elastic piece is driven plain substantially；This is also to require the second arc elastic piece why One end the reason of not being connected with the guide rail inner top surface of the second guide rail straight section b；The of the second guide rail is entered in the second slide bar When two guide rail straight section b, the second arc elastic piece is restored to nature under reset.4th, when the second slide bar is from the second guide rail The second guide rail straight section b it is mobile to the second guide rail direction straight section a when, the second slide bar can touch the second arc elastic piece, at this time Second slide bar squeezes the second arc elastic piece, and the second arc elastic piece is extruded bending, and in the guidance of the second arc elastic piece Under, the second slide bar will not slide into the second guide rail segmental arc a, but slide into the second guide rail segmental arc b；Second slide bar edge The second guide rail segmental arc b slided to the second guide rail straight section a, the second elastic drum and the first elastic drum are detached to squeeze and match at this time It closes, and there are spacing between the second elastic drum and the first elastic drum.5th, it is led in the second slide bar from the second of the second guide rail When rail segmental arc b transition slides into the second guide rail straight section a of the second guide rail, the second slide bar the first arc elastic piece of extruding, first Arc elastic piece is driven plain substantially；This be also why require one end of the first arc elastic piece not with the second guide rail straight section a The reason of guide rail inner bottom surface is connected；When the second slide bar enters the second guide rail straight section a of the second guide rail, the second arc elastic Piece is restored to nature under reset.6th, when the second guide rail straight section a of the second slide bar from the second guide rail is straight to the second guide rail When the section direction b is mobile, the second slide bar can touch the first arc elastic piece, and the second slide bar squeezes the first arc elastic piece at this time, First arc elastic piece is extruded bending, and under the guidance of the first arc elastic piece, the second slide bar will not slide into second and lead In rail segmental arc b, but slide into the second guide rail segmental arc a；Second slide bar is along the second guide rail segmental arc a to the second guide rail During straight section b is slided, the second elastic drum and the first elastic drum maintain extrusion fit.

When first slide bar and the second slide bar slide in the first guide rail and the second guide rail respectively, the motive force of the first slide bar by First pushes item to provide, and the motive force of the second slide bar pushes item to provide by second.First pushes article corresponding with the second slide bar the Two through-holes match, and first, which pushes item to pass through one end of the first slide bar and second, pushes item between the presence of one end of the second slide bar Away from and to name the spacing be space D, the space D design long less than the hole of the second through-hole in the second slide bar is: first, U-shaped When push plate is pushed to the outlet square hole direction of square shell, U-shaped push plate drives first to push item mobile, and U-shaped push plate is dynamic through L-type strip Second pushes item mobile；So in the case where first pushes item and second pushes the promotion of item, the first slide bar is slided along the first guide rail, Second slide bar slides into the second guide rail straight section b from the second guide rail straight section a after the second guide rail segmental arc a；Due to the first guide rail In in the first guide rail segmental arc and the second guide rail the second guide rail segmental arc a arc guidance, in the first slide bar along the first guide rail When segmental arc slides, the first slide bar can be moved up and down along the first promotion item；It is sliding along the second guide rail segmental arc a in the second slide bar When dynamic, after the second slide bar can be moved upwards up to extreme position along the second promotion item, moved still further below then along the second promotion item It is dynamic；In the second slide bar during moving up, the second slide bar can slide into the first promotion by space D from the second promotion item On item；With the guidance of the second guide rail segmental arc a, the second slide bar can push article from first and slide into the again by space D Two push on item.The space D design long less than the hole of the second through-hole in the second slide bar is exactly to guarantee: in the second slide bar the When sliding between one promotion item and the second promotion item, the second slide bar will not be detached from from space D.Second, in U-shaped push plate to separate When the outlet square hole direction reset movement of square shell, U-shaped push plate drives first to push item mobile, and U-shaped push plate is through L-type strip dynamic the Two push item mobile；So in the case where first pushes item and second pushes the pulling of item, the first slide bar slides multiple along the first guide rail Position, the second slide bar slide into the second guide rail section a after the second guide rail segmental arc b from the second guide rail straight section b；Due to the first guide rail In in the first guide rail segmental arc and the second guide rail the second guide rail segmental arc b arc guidance, in the first slide bar along the first guide rail When segmental arc sliding resets, the first slide bar can be moved up and down along the first promotion item；In the second slide bar along the second guide rail arc When section b sliding resets, after the second slide bar can be moved down into extreme position along the second promotion item, item is pushed then along second It moves up again.

The design that fixed strip is matched with space D is: driving first to slide respectively in the first promotion item and the second promotion item During bar and the second slide bar are mobile, space D allows fixed strip to pass through, and guarantees that first pushes item and second to push item can be smoothly Ground drives the first slide bar and the second slide bar mobile.In addition, being located just in space D in fixed strip and the second slide bar is located at and second leads When rail segmental arc a, the second slide bar has been slided on the first promotion item at this time, and the second elastic drum on the second slide bar will not U-shaped platform of cutting is caused to interfere, guarantees that the second slide bar can be slided smoothly in the second guide rail.It is located just in space D in fixed strip And second slide bar when being located at the second guide rail segmental arc b, the second slide bar is located at second and pushes on item at this time, and the on the second slide bar Two elastic drums will not cause to interfere to U-shaped platform of cutting, and guarantee that the second slide bar can be slided smoothly in the second guide rail.

Preservative film is matched with the first elastic drum and the second elastic drum；In the first elastic drum and the second elastic drum When generating extrusion fit, preservative film is compressed between the first elastic drum and the second elastic drum, this ensures that the When one elastic drum and the second elastic drum are slided from the second guide rail straight section a to the second guide rail direction straight section b, preservative film always by Be extruded between the first elastic drum and the second elastic drum without departing from.When the first elastic drum and the second elastic drum from When second guide rail straight section b is slided to the second guide rail direction straight section a, it can be detached between the first elastic drum and the second elastic drum crowded Press-fit, and then preservative film will not be compressed between the first elastic drum and the second elastic drum.

The effect that first elastic drum and the second elastic drum are matched with two elastic baffles is: in the first elasticity rolling When cylinder and the second elastic drum are moved to the extreme position of the second guide rail straight section b, the first elastic drum and the second elastic drum position At the outlet square hole of square shell, and the first elastic drum and the second elastic drum open two elastic baffles, and such first The preservative film being extruded between elastic drum and the second elasticity can stretch out the outlet square hole of square shell, be held convenient for user with hand From one end that the outlet square hole of square shell stretches out.At this point, preservative film makes when being set in user and pulling out preservative film from the shell of direction It obtains the first elastic drum to rotate counterclockwise, preservative film rotates clockwise the second elastic drum.When the first elastic drum and When two elastic drums no longer act on two elastic baffles, under the elastic reset of elastic baffle, two elastic baffles are reset to Reset condition.Two elastic baffles are mounted in outlet square hole in a manner of symmetrically, and two elastic baffles it is relative to each other one Hold the design being in contact to be: when two elastic baffles are not opened, the mutual cooperation of two elastic baffles can will go out Mouth square hole seals up, and extraneous dust is avoided to enter from outlet square hole.

The groove width of cutting sliding slot and promotion sliding slot in the present invention is narrow as far as possible, can thus be reduced as far as outer The dust on boundary enters in square shell, and extension preservative film is by the time that extraneous dust largely adheres to and is dirty.

The design of first one-way clutch ring and the second one-way clutch ring is: pulling out preservative film from the shell of direction in user When, the first one-way clutch ring allows the first elastic drum to rotate counterclockwise, and the first elastic drum is not allowed to rotate clockwise；Second One-way clutch ring allows the first elastic drum to rotate clockwise, and the first elastic drum is not allowed to rotate counterclockwise.First unidirectionally from Cyclization does not allow the first elastic drum to rotate clockwise, and the second one-way clutch ring does not allow the first elastic drum to rotate counterclockwise Design it is ensured that: moved in the first elastic drum and the second elastic drum from the second guide rail straight section a to the second guide rail direction straight section b When dynamic, preservative film is extruded in the first elastic drum and the second bullet by the first elastic drum and the cooperation of the second elastic drum continuous extrusion Between property roller, and preservative film can be elongated；Preservative film is drawn in by the first elastic drum and the second elastic drum moving process When long, Wrap barrel discharges preservative film by rotating, and preservative film is moved through by the first elastic drum and the second elastic drum When elongating in journey, the first one-way clutch ring prevents preservative film that the first elastic drum is driven to rotate clockwise, the second one-way clutch Ring prevents preservative film that the second elastic drum is driven to rotate counterclockwise；Finally it ensure that preservative film can successfully be drawn from square shell Out.

Item, second is pushed to push item, pushing block, guide block, the first slide bar, the second slide bar and third bullet U-shaped push plate, first The design of spring is: first, when pushing block is mobile to the outlet square hole direction of square shell under external force, pushing block drives U-shaped Push plate is mobile to the outlet square hole direction of square shell, and guide block and T-type plate follow U-shaped push plate mobile, and third spring is stretched；It is U-shaped Push plate pushes first to push item mobile to the outlet square hole direction of square shell, and first pushes item to drive the first slide bar to square shell It is mobile to export square hole direction, and then the first slide bar is slided along the first guide rail；U-shaped push plate through L-type plate push second push item to The outlet square hole direction of square shell is mobile, and second pushes item to drive the second slide bar mobile to the outlet square hole direction of square shell, the Two slide bars are slided along the second guide rail segmental arc a.Second, under the reset response of third spring, guide block drives U-shaped push plate mobile It resets, pushing block, T-type plate, the first promotion item and the second promotion item follow U-shaped push plate is mobile to reset, and first pushes item to drive first Slide bar moves reset, the second the second guide rail segmental arc b for pushing item to drive the second slide bar along the second guide rail along the first guide rail It is mobile to reset.

Blade is with the U-shaped design cutting platform and matching: user pushes pressing plate, and pressing plate drives cutting plate to move down, and first Spring is compressed；After cutting plate is pressed down to greatest extent, the blade on cutting plate is just opposite with U-shaped platform of cutting, and makes in this way User is by pushing pressing plate, and pressing plate drives cutting plate, cutting sliding block and blade to slide along cutting sliding slot, and blade enters U-shaped Cut cutting preservative film in platform.After cutting sliding block and sliding into the other end from one end of cutting sliding slot, blade is by the U-shaped guarantor cut on platform Fresh film cutting finishes.After user no longer pushes pressing plate, under the reset response of the first spring, pressing plate drives cutting plate and knife Piece is mobile to be resetted.

For the status requirement of U-shaped push plate, U-shaped board and the second support plate: U-shaped push plate is identical with the height of U-shaped board, in this way T-type plate could generate extrusion fit relationship with limited block.U-shaped board is dialled the spacing held between corresponding second support plate, is protected The side plate for demonstrate,proving U-shaped push plate can pass through.

For executing agency: when the non-cutting preservative film of blade, cutting sliding block is located at one end of cutting sliding slot, and cutting is slided By group held corresponding in U-shaped board of shifting block on block is in contact.Limited block has bevelled one end and matches with the positive stop end of T-type plate Design be: when U-shaped push plate drives T-type plate into the outlet square hole direction moving process of square shell, the positive stop end of T-type plate is squeezed The inclined-plane on limited block is pressed, limited block is extruded in square type guide tube, and second spring is compressed；When the positive stop end of T-type plate is crossed After limited block, the positive stop end of T-type plate is located between two fixed plates, at this time since the inclined-plane on limited block is no longer influenced by extruding, So under the reset response of second spring, limited block has bevelled one end and stretches out square type guide tube, such limited block tool again There is the non-inclined-plane of inclined-plane one end to limit the positive stop end of T-type plate, the positive stop end of T-type plate is prevented to be detached from between two fixed plates. When cutting sliding block is moved to the other end from one end of cutting sliding slot, blade cuts preservative film, and moves in cutting sliding block In dynamic process, cut sliding block on shifting block stir in U-shaped board another by dial end, shifting block drive U-shaped board to blade cut The direction of preservative film is mobile, and U-shaped board drives ladder type sliding block to slide in ladder type sliding rail, two fixed plates, square type guide tube, the second bullet Spring, limited block follow U-shaped board mobile.During limited block follows U-shaped board mobile, two positive stop ends of T-type plate can be just Occur having in the spacing of bevelled one end positioned at two limited blocks；Due to two limited blocks have between bevelled one end away from From for S1, the distance between two positive stop ends of T-type plate are S2, and S1 is greater than S2；So it just will appear the positive stop end of T-type plate no longer The situation limited by corresponding limited block, and U-shaped push plate at this time can utilize the reset force of third spring, and U-shaped push plate is made to pull T Template is detached from between two fixed plates, and two limited blocks will no longer limit T-type plate.

The design of ladder type sliding block and ladder type sliding rail is in the present invention: when ladder type sliding block slides in ladder type sliding rail, ladder type Sliding block will not be detached from from ladder type sliding rail；The connection of ladder type sliding block and U-shaped board can make U-shaped board hang up.

When Wrap barrel in the present invention needs replacing, cover board is removed, it then will be fresh-keeping by way of horizontally slipping One end of film cylinder is removed from corresponding support rod, then the other end of Wrap barrel will be successfully from another support rod It removes.One end of Wrap barrel is inserted on corresponding support rod by new Wrap barrel, then still by horizontally slipping Mode is inserted into the other end of Wrap barrel on another support rod；One end of preservative film on Wrap barrel is pressed into first Between elastic drum and the second elastic drum.Outlet square hole of the second guide rail straight section b of the second guide rail close to square shell.

When the pushing block person of being not used by pushes, the second slide bar is located in the second guide rail straight section a of the second guide rail, the first slide bar In the corresponding first guide rail straight section of the first guide rail；The first elastic drum and the second elastic drum generate extrusion fit at this time, One end of preservative film is compressed between the first elastic drum and the second elastic drum.Limited block have bevelled one end not with T The positive stop end of template generates extrusion fit.Pressing plate is not pressed down, the non-cutting preservative film of blade, and cutting sliding block is located at cutting sliding slot At one end, by group held corresponding in U-shaped board of the shifting block on sliding block is cut at this time and is in contact, and in two at U-shaped board limited block A limited block can with the positive stop end on T-type plate generate cooperation.

When preservative film needs take out from square shell, user pushes outlet of the pushing block along promotion sliding slot to square shell Square hole direction is mobile, and pushing block drives U-shaped push plate mobile to the outlet square hole direction of square shell, and guide block and T-type plate follow U-shaped push plate Mobile, third spring is stretched；U-shaped push plate pushes first to push item mobile to the outlet square hole direction of square shell, and first pushes It is mobile to the outlet square hole direction of square shell that item drives the first slide bar, and then the first slide bar is slided along the first guide rail；U-shaped push plate Second is pushed to push item mobile to the outlet square hole direction of square shell through L-type plate, second pushes item to drive the second slide bar to square The outlet square hole direction of shell is mobile, and the second slide bar is from the second guide rail straight section a of the second guide rail to the second direction guide rail straight section b at this time Mobile, the second slide bar can touch the first arc elastic piece, and the second slide bar squeezes the first arc elastic piece, the first arc bullet at this time Property piece is extruded bending, and under the guidance of the first arc elastic piece, the second slide bar will not slide into the second guide rail segmental arc b In, but slide into the second guide rail segmental arc a；Second slide bar is slided along the second guide rail segmental arc a to the second guide rail straight section b During, the second elastic drum and the first elastic drum maintain extrusion fit；First elastic drum and the second elastic drum Preservative film is elongated from Wrap barrel by extrusion fit, Wrap barrel discharges preservative film by rotating.Due to the first list Effect to clutch ring and the second one-way clutch ring, preservative film not will drive the first elastic drum and rotate clockwise, and preservative film is not It will drive the second elastic drum to rotate counterclockwise；Finally it ensure that preservative film can be pulled out successfully from square shell.

When pushing block is mobile to the outlet square hole direction of square shell under external force, pushing block drives U-shaped push plate to square The outlet square hole direction of shell is mobile, and guide block and T-type plate follow U-shaped push plate mobile, and third spring is stretched.In U-shaped push plate through One pushes item and second to push under item promotion, the second elastic drum on the first elastic drum and the second slide bar on the first slide bar When at the outlet square hole of square shell, the positive stop end of T-type plate squeezes the inclined-plane on corresponding limited block, and limited block is extruded to square In type guide tube, second spring is compressed.After the positive stop end of T-type plate crosses limited block, the positive stop end of T-type plate is located at two fixations Between plate, at this time since the inclined-plane on limited block is no longer influenced by extruding, then under the reset response of second spring, limited block tool Square type guide tube is stretched out in bevelled one end again, and there is such limited block the non-inclined-plane of inclined-plane one end to limit the positive stop end of T-type plate Position, prevents the positive stop end of T-type plate to be detached from between two fixed plates.This ensures that no longer pushing U through pushing block in user When type push plate, the T-type plate in U-shaped push plate is limited, so U-shaped push plate can not self-return, guarantee the first slide bar on first The second elastic drum on elastic drum and the second slide bar is located at the outlet square hole of square shell.

First push item and second push item promotion under, the first slide bar is slided along the first guide rail, the second slide bar from Second guide rail straight section a slides into the second guide rail straight section b after the second guide rail segmental arc a；Due to the first guide rail in the first guide rail The arc guidance of the second guide rail segmental arc a, is slided in the first slide bar along the first guide rail segmental arc in segmental arc and the second guide rail When, the first slide bar can be moved up and down along the first promotion item；When the second slide bar is slided along the second guide rail segmental arc a, second After slide bar can be moved upwards up to extreme position along the second promotion item, moved still further below then along the second promotion item；Second During moving up, the second slide bar can slide on the first promotion item from the second promotion item by space D slide bar；With The guidance of second guide rail segmental arc a, the second slide bar can slide into again the second promotion item by space D from the first promotion item On.During the first promotion item and the second promotion item drive the first slide bar and mobile the second slide bar respectively, space D allows solid Determine item to pass through, guarantees that the first promotion item and the second promotion item can successfully drive the first slide bar and the second slide bar mobile.

When the first elastic drum and the second elastic drum are moved to the extreme position of the second guide rail straight section b, the first elasticity Roller and the second elastic drum are located at the outlet square hole of square shell, and the first elastic drum and the second elastic drum are by two bullets Property baffle opens, and the preservative film being extruded between such first elastic drum and the second elasticity can stretch out the exporter of square shell Hole is held with hand from one end that the outlet square hole of square shell stretches out convenient for user.At this point, being set in user from the shell of direction When pulling out preservative film, due to the effect of the first one-way clutch ring and the second one-way clutch ring, preservative film makes the first elastic drum Rotation, preservative film rotate clockwise the second elastic drum counterclockwise.This ensures that preservative film will not be by the first elasticity Roller and the limitation of the second elastic drum pull out, and preservative film energy user is constantly elongated, and Wrap barrel can be driven by preservative film It rotates to discharge the preservative film of winding.

After preservative film is pulled out using length, user pushes pressing plate, and pressing plate drives cutting plate to move down, the first spring It is compressed；After cutting plate is pressed down to greatest extent, the blade on cutting plate is just opposite with U-shaped platform of cutting, such user By pushing pressing plate, pressing plate drives cutting plate, cutting sliding block and blade to slide along cutting sliding slot, and blade, which enters, U-shaped cuts platform Middle cutting preservative film.After cutting sliding block and sliding into the other end from one end of cutting sliding slot, blade is by the U-shaped preservative film cut on platform Cutting finishes.Preservative film in square shell by the first elastic drum and the second elastic drum due to being pressed against, and preservative film is drawn During out, preservative film is in tensioning state always；So blade can be easy to cutting when with blade cutting preservative film The preservative film of tight state.After preservative film cutting, preservative film one end after having been cut can be attached to the U-shaped edge for cutting platform Place.When cutting sliding block is moved to the other end from one end of cutting sliding slot, blade cuts preservative film；It is moved in cutting sliding block In dynamic process, cuts the shifting block on sliding block and be detached from and accordingly dialled the contact at end in U-shaped board, but cut in blade fresh-keeping After film, another for cutting that the shifting block on sliding block stirs in U-shaped board is dialled end, and shifting block drives U-shaped board to blade cutting preservative film Direction it is mobile, U-shaped board drives ladder type sliding block to slide in ladder type sliding rail, two fixed plates, square type guide tube, second spring, limit Position block follows U-shaped board mobile.During limited block follows U-shaped board mobile, position can just occur in two positive stop ends of T-type plate In the spacing that two limited blocks have bevelled one end；It is since two limited blocks have the distance between bevelled one end S1, the distance between two positive stop ends of T-type plate are S2, and S1 is greater than S2；It so just will appear the positive stop end of T-type plate no longer by phase The situation that the limited block answered is limited, and U-shaped push plate at this time can utilize the reset force of third spring, and U-shaped push plate is made to pull T-type plate It is detached from between two fixed plates, two limited blocks will no longer limit T-type plate.Under the reset response of third spring, guide block Drive U-shaped push plate is mobile to reset, pushing block, T-type plate, the first promotion item and the second promotion item follow U-shaped push plate is mobile to reset, and first Push item that the first slide bar is driven to move resets along the first guide rail, second pushes article the second slide bar of drive along the of the second guide rail Two guide rail segmental arc b are mobile to be resetted.When first elastic drum and the second elastic drum no longer act on two elastic baffles, in bullet Under the elastic reset of property baffle, two elastic baffles reset to reset condition.

When the second slide bar is mobile to the second guide rail direction straight section a from the second guide rail straight section b of the second guide rail, the second slide bar The second arc elastic piece can be touched, the second slide bar squeezes the second arc elastic piece at this time, and the second arc elastic piece is squeezed press-bending Song, and under the guidance of the second arc elastic piece, the second slide bar will not slide into the second guide rail segmental arc a, but slide into In second guide rail segmental arc b；Second slide bar is slided along the second guide rail segmental arc b to the second guide rail straight section a, at this time the second elasticity Roller and the first elastic drum are detached from extrusion fit, and there are spacing between the second elastic drum and the first elastic drum.When One elastic drum and the second elastic drum are sliding to the second guide rail direction straight section a through the second guide rail segmental arc b from the second guide rail straight section b When dynamic reset, extrusion fit can be detached between the first elastic drum and the second elastic drum, and then preservative film will not be compressed in Between first elastic drum and the second elastic drum.

In outlet square hole direction reset movement of the U-shaped push plate to separate square shell, U-shaped push plate drives first item is pushed to move Dynamic, U-shaped push plate pushes item mobile through L-type strip dynamic second；So in the case where first pushes item and second pushes the pulling of item, first Slide bar is slided along the first guide rail to be resetted, and the second slide bar slides into the from the second guide rail straight section b after the second guide rail segmental arc b Two guide rail section a；Since the arc of the second guide rail segmental arc b in the first guide rail segmental arc in the first guide rail and the second guide rail guides, When the first slide bar is slided along the first guide rail segmental arc and resetted, the first slide bar can be moved up and down along the first promotion item；? When two slide bars slide reset along the second guide rail segmental arc b, the second slide bar can be moved down into limit position along the second promotion item It postpones, is moved up again then along the second promotion item.First promotion item and second promotion item drive respectively the first slide bar and During the mobile reset of second slide bar, space D allows fixed strip to pass through, and guarantees that first pushes item and second to push item energy smoothly Ground drives the first slide bar and the mobile reset of the second slide bar.

When the first elastic drum and the movement of the second elastic drum reset to home position, the second slide bar is located at the second guide rail The second guide rail straight section a in, the first slide bar is located in the corresponding first guide rail straight section of the first guide rail；At this time the first elastic drum and Second elastic drum regenerates extrusion fit, preservative film be compressed in again the first elastic drum and the second elastic drum it Between.

When preservative film needs to pull out again, user can repeat the above process again.

It is compared to preservative film cutting device popular on the market, cutter device of the invention does not need frequently to open fresh-keeping The lid of film cutter device can be achieved with taking out preservative film from cutter device, considerably increase user frequently go bail for it is fresh The convenience of film.In addition, being compared to the preservative film cutting device for not needing to open lid on the market, cutter device of the invention In the process cut of preservative film be to be completed in square shell, and after preservative film cutting, pulled up from Wrap barrel One section of preservative film out is retained in square shell, is retained in the preservative film in square shell by square shell, bottom plate, lid and bullet Property baffle bridging effect under, the dust of outside air flowing is difficult to be adsorbed on one section pulled out from Wrap barrel in square shell Preservative film reduces the probability that the one section of preservative film pulled out on Wrap barrel is polluted by many dusts, extends on Wrap barrel The clean time of the one section of preservative film pulled out.Cutter device is conveniently applied in family life in the present invention, especially in family After having wrapped up food in life, preservative film could can be used again by delay a very long time, in the time that this section is detained, fresh film The one section of preservative film pulled out on cylinder is not easy to be contaminated by dust, and ensure that the safety of next packaged food.

Relative to traditional cutting technique, for the pushing block in the present invention under external force promotion, pushing block pushes U-shaped push plate to make the One pushes item to push the first slide bar, and second pushes item to push the second slide bar；And then guarantee the first elastic drum and the second elasticity rolling Cylinder by extrusion fit by preservative film from the outlet square hole for reaching square shell in square shell, convenient for users to by preservative film from It is taken out in cutter device, avoids traditional Casing with means for cutting the preservation film and need frequently to open the fiber crops that Casing with means for cutting the preservation film lid takes preservative film It is tired.For cutter device of the invention after the completion of cutting, the first elastic drum and the second elastic drum can automatically move reset to weigh Newly preservative film is pressed against, so that next time is reused, considerably increases the convenience of operation.In addition, cutting of the invention fills Setting can avoid to a certain extent the preservative film in cutter device from being contaminated by dust, extend cutter device in preservative film it is clean when Between, it ensure that the safety of next packaged food.The configuration of the present invention is simple has preferable using effect.

Detailed description of the invention

Fig. 1 is cutter device overall schematic.

Fig. 2 is cutter device entirety diagrammatic cross-section.

Fig. 3 is that cutter device removes the schematic diagram after cover board.

Fig. 4 is square shell diagrammatic cross-section.

Fig. 5 is the structural schematic diagram installed on bottom plate.

Fig. 6 is the diagrammatic cross-section of Fig. 5.

Fig. 7 is the schematic section elevation of Fig. 5.

Fig. 8 is executing agency's scheme of installation.

Fig. 9 is executing agency's installation diagrammatic cross-section.

Figure 10 is ladder type sliding rail scheme of installation.

Figure 11 is ladder type sliding block installation diagrammatic cross-section.

Figure 12 is that shifting block with U-shaped board matches schematic diagram.

Figure 13 is cutting plate installation diagrammatic cross-section.

Figure 14 is cutting sliding block diagrammatic cross-section.

Figure 15 is limited block installation diagrammatic cross-section.

Figure 16 is bar shaped guide rail scheme of installation.

Figure 17 is Wrap barrel scheme of installation.

Figure 18 is U-shaped to cut platform scheme of installation.

Figure 19 is the first guide rail and the second guide rail scheme of installation.

Figure 20 is that the first slide bar is matched with the first guide rail, the schematic elevation view that the second slide bar is matched with the second guide rail.

Figure 21 is T-type plate and L-type plate scheme of installation.

Figure 22 is the schematic diagram that the spacing between fixed strip and the first promotion item and the second promotion item matches.

Figure 23 is the spacing schematic diagram between the first promotion item and the second promotion item.

Figure 24 is the first one-way clutch ring and the second one-way clutch ring installation diagrammatic cross-section.

Figure 25 is the section schematic top plan view that T-type plate is matched with limited block.

Figure 26 is blade on cutting plate and the U-shaped schematic section elevation cutting platform and matching.

Figure label title: 1, bottom plate；2, square shell；3, cover board；4, elastic baffle；5, sliding slot is cut；6, sliding slot is pushed； 7, executing agency；8, pushing block；10, the first support plate；12, the second support plate；13, bar shaped guide rail；14, square hole is exported；15, fresh-keeping Film cylinder；16, preservative film；17, the first guide rail；18, the second guide rail；19, U-shaped push plate；20, first item is pushed；21, the first elasticity rolling Cylinder；22, the second elastic drum；23, fixed strip；24, U-shaped to cut platform；25, the first one-way clutch ring；26, the second one-way clutch ring； 28, ladder type sliding rail；29, sliding block is cut；30, U-shaped board；31, fixed plate；32, square type guide tube；33, pressing plate；34, cutting plate；35, First spring；36, limited block；37, ladder type sliding block；38, shifting block；39, end is dialled；40, stripe board；41, card slot；42, blade； 43, sliding channel；44, inclined-plane；45, second spring；48, support rod；49, the first slide bar；50, the second slide bar；51, the first guide rail Segmental arc；53, the first guide rail straight section；54, the second guide rail straight section a；55, the second guide rail straight section b；56, the second guide rail segmental arc b； 57, the second guide rail segmental arc a；58, the second arc elastic piece；59, the first arc elastic piece；60, side plate；61, T-type plate；62, it limits Position end；63, guide block；64, third spring；65, first through hole；66, the second through-hole；81, L-type plate；82, second item is pushed.

Specific embodiment

As shown in Fig. 1,4,7,20, it includes bottom plate 1, square shell 2, cover board 3, elastic baffle 4, cutting sliding slot 5, pushes and slide Slot 6, executing agency 7, pushing block 8, the first support plate 10, the second support plate 12, bar shaped guide rail 13, outlet square hole 14, the first guide rail 17, the second guide rail 18, U-shaped push plate 19, first push item 20, second to push item 82, L-type plate 81, the first elastic drum 21, second Elastic drum 22, U-shaped cuts platform 24, the first one-way clutch ring 25, the second one-way clutch ring 26, support rod 48, first at fixed strip 23 Slide bar 49, the second slide bar 50, the first arc elastic piece 59, the second arc elastic piece 58, T-type plate 61, guide block 63, third spring 64, first through hole 65, the second through-hole 66 are equipped with square shell 2 as shown in Figure 1,3 in insole board 1；As shown in Figure 1, 2, it covers Plate 3 is mounted on the one end of square shell 2 far from bottom plate 1；As shown in figure 4, the side shell surface middle position of square shell 2 is provided with exporter Hole 14；As shown in Fig. 1,4, two elastic baffles 4 are mounted in outlet square hole 14 in a manner of symmetrically, and two elastic baffles 4 One end relative to each other is in contact；As shown in Fig. 1,8, it is provided with the cutting sliding slot 5 of perforation on cover board 3 and pushes sliding slot 6；As Fig. 8, Shown in 9, executing agency 7 is mounted on cover board 3；As shown in Fig. 5,16, one end of outlet square hole 14 of the bottom plate 1 far from square shell 2 Upper surface on symmetrically installation there are two the first support plate 10；Two support rods 48 are mounted on two first in a manner of symmetrically In support plate 10, and two support rods 48 are located between two the first support plates 10；Outlet square hole of the bottom plate 1 close to square shell 2 Symmetrically there are two the second support plates 12 for installation on the upper surface of 14 one end；Two bar shaped guide rails 13 are separately mounted to two On two one end of support plate 12 far from bottom plate 1.

As shown in Figure 17,19, the structure installed on two the second support plates 12 side surface relative to each other is all the same, right In the side surface of wherein any one the second support plate 12: the first guide rail 17 and the second guide rail 18 are mounted on the second support plate 12 On side surface, and the first guide rail 17 is located at the upper end of the second guide rail 18；As shown in figure 20, the first guide rail 17 is by the first guide rail arc Section 51 and two the first guide rail straight sections 53 are constituted, and the both ends of the first guide rail segmental arc 51 respectively with two the first guide rail straight sections 53 It is connected；Second guide rail 18 is by the second guide rail segmental arc a57, the second guide rail segmental arc b56, the second guide rail straight section a54 and second Guide rail straight section b55 is constituted；The radian of the radian of second guide rail segmental arc a57 and the second guide rail segmental arc b56 are identical, and second leads Rail segmental arc a57 and the second guide rail segmental arc b56 by up and down symmetrically in a manner of be distributed；Second guide rail segmental arc a57 is located at second On guide rail segmental arc b56；The both ends of second guide rail segmental arc a57 are connected with the both ends of the second guide rail segmental arc b56 respectively； One end junction of second guide rail segmental arc a57 and the second guide rail segmental arc b56 are connected with the second guide rail straight section a54, the other end Junction is connected with the second guide rail straight section b55；As shown in Figure 19,20, the second guide rail segmental arc a57 and the second guide rail straight section b55 Second arc elastic piece 58 is installed, and the second arc elastic piece 58 is straight far from the second guide rail on the guide rail inner top surface of connection One end of section b55 is connected with the guide rail inner top surface of the second guide rail segmental arc a57, and the other end is not with the second guide rail straight section b55's Guide rail inner top surface is connected；It is installed on second guide rail segmental arc b56 and the guide rail inner bottom surface of the second connection guide rail straight section a54 There are the first arc elastic piece 59, and the one end of the first arc elastic piece 59 far from the second guide rail straight section a54 and the second guide rail arc The guide rail inner bottom surface of section b56 is connected, and the other end is not connected with the guide rail inner bottom surface of the second guide rail straight section a54.

As shown in Figure 19,20, the both ends of the first slide bar 49 are separately mounted to two first by way of being slidably matched and lead In rail 17；The both ends of second slide bar 50 are separately mounted in two the second guide rails 18 by way of being slidably matched；Such as Figure 24 institute Show, is symmetrically opened on the first slide bar 49 there are two first through hole 65；Two the first one-way clutch rings 25 are installed in a manner of symmetrically On the periphery of the first slide bar 49, and two the first one-way clutch rings 25 are located between two first through hole 65；First elasticity The both ends of roller 21 are separately mounted on the periphery of two the first one-way clutch rings 25；As shown in figure 24, on the second slide bar 50 Second through-hole 66 there are two symmetrically opening；Two the second one-way clutch rings 26 are mounted on the outer of the second slide bar 50 in a manner of symmetrically On disc, and two the second one-way clutch rings 26 are located between two the second through-holes 66；Distinguish at the both ends of second elastic drum 22 It is mounted on the periphery of two the second one-way clutch rings 26；First elastic drum 21 is matched with the second elastic drum 22；Such as Shown in Figure 20, the second slide bar 50 is matched with the first arc elastic piece 59 and the second arc elastic piece 58 respectively.

As shown in figure 21, U-shaped push plate 19 is made of stripe board 40 and two side plates 60；One end of pushing block 8 is mounted on U-shaped push away On the middle position upper surface of the stripe board 40 of plate 19, as shown in Figure 1, the other end passes through the promotion sliding slot 6 of cover board 3；Pushing block 8 is sliding It moves in promotion sliding slot 6；As shown in figure 21, one end of T-type plate 61 is mounted on the middle position side of the stripe board 40 of U-shaped push plate 19 On surface；T-type plate 61 is located between two side plates 60 of U-shaped push plate 19；There are two positive stop ends 62 for the tool of T-type plate 61, and two limit Stripe board 40 of the position end 62 far from U-shaped push plate 19；As shown in figure 25, two positive stop ends 62 of T-type plate 61 and executing agency 7 match It closes；As shown in figure 21, two side plates 60 of U-shaped push plate 19 are mounted on a guide block 63, and two guide blocks 63 are symmetrical；Such as figure 21, shown in 16,25, two guide blocks 63 are mounted in two bar shaped guide rails 13 by way of being slidably matched；Two third springs 64 one end is separately mounted on two guide blocks 63, and the other end is separately mounted on the medial surface of two bar shaped guide rails 13；Two Third spring 64 is located in two bar shaped guide rails 13；As shown in Figure 21,22, one end of two side plates 60 of U-shaped push plate 19 Place is mounted on one first promotion item 20；As shown in Figure 22,23, first in the same side pushes item 20, the first slide bar 49 Item 20 is pushed to pass through the corresponding first through hole 65 of the first slide bar 49 with the second slide bar 50, first；First pushes item 20 and second to slide Corresponding second through-hole 66 of bar 50 matches；As shown in Figure 21,22, one end of two L-type plates 81 is separately mounted to U-shaped push plate 19 Two side plates 60 far from it is corresponding first push item 20 one end on, the other end is separately installed with the second promotion item 82；As Figure 22, Shown in 23, second in the same side pushes item 82, the first slide bar 49 and the second slide bar 50, and second, which pushes item 82 to pass through second, slides Corresponding second through-hole 66 of bar 50；As shown in figure 23, the first promotion item 20 in the same side and the second promotion item 82: the first push away Dynamic item 20 passes through one end of the first slide bar 49 and second and pushes item 82 opposite across one end of the second slide bar 50, and first pushes item 20 One end of the second slide bar 50 is passed through there are spacing with the second promotion item 82 across one end of the first slide bar 49 and names the spacing to be Space D, space D are long less than the hole of the second through-hole 66 in the second slide bar 50.

As shown in figure 18, U-shaped platform 24 of cutting is separately mounted to be mounted on two the second support plates 12 by two fixed strips 23 On；As shown in figure 17, fixed strip 23 is located at the second guide rail segmental arc a57 and the second guide rail segmental arc of corresponding second guide rail 18 Between b56；As shown in figure 26, above-mentioned executing agency 7 matches with U-shaped platform 24 of cutting.

As shown in figure 22, fixed strip 23, first in the same side pushes item 20 and second pushes item 82: fixed strip 23 with Space D matches.

As shown in Figure 10,12,13,15, above-mentioned executing agency 7 includes ladder type sliding rail 28, cutting sliding block 29, U-shaped board 30, consolidates Fixed board 31, pressing plate 33, cutting plate 34, the first spring 35, limited block 36, ladder type sliding block 37, shifting block 38, is dialled square type guide tube 32 39, stripe board 40, card slot 41, blade 42, sliding channel 43, inclined-plane 44, second spring 45 are held, as shown in figure 14, wherein cutting The sliding channel 43 of perforation is provided in sliding block 29；It symmetrically opens there are two card slot 41 two sides of cutting sliding block 29；Such as Fig. 9,10 institutes Show, cutting sliding block 29 is mounted in cutting sliding slot 5 by way of being slidably matched；As shown in figure 13, cutting plate 34 passes through sliding The mode of cooperation is mounted in the sliding channel 43 of cutting sliding block 29, and the both ends of cutting plate 34 are pierced by cutting sliding block 29；It cuts The one end for cutting plate 34 is equipped with blade 42, and the other end is equipped with pressing plate 33；Pressing plate 33 is located on cover board 3；As shown in Fig. 9,26, First spring 35 is nested on cutting plate 34, and on one end installation pressing plate 33 of the first spring 35, the other end is mounted on cutting and slides On block 29；As shown in figure 12, it cuts and shifting block 38 is installed on the side of sliding block 29；As shown in Figure 10, ladder type sliding rail 28 is mounted on On the lower surface of cover board 3, and ladder type sliding rail 28 is close to cutting sliding slot 5；As shown in Fig. 9,11, ladder type sliding block 37 is by being slidably matched Mode be mounted in ladder type sliding rail 28；One end that ladder type sliding block 37 is pierced by ladder type sliding rail 28 is equipped with U-shaped board 30；Such as Figure 12 institute Show, U-shaped board 30 is made of stripe board 40 and two by end 39 is dialled；Shifting block 38 is matched with two by end 39 is dialled；Two square types are led Cylinder 32 is mounted in the stripe board 40 of U-shaped board 30 by fixed plate 31, and two square type guide tubes 32 being dialled far from U-shaped board 30 End 39；As shown in Figure 12,15, two limited blocks 36 are separately mounted in two square type guide tubes 32 by way of being slidably matched； One end of two second springs 45 is separately mounted on two limited blocks 36, and the other end is separately mounted to two square type guide tubes 32 On the cylinder face of bottom；Two second springs 45 are located in two square type guide tubes 32；Each limited block 36 is far from corresponding second bullet One end of spring 45 has inclined-plane 44.

As shown in figure 25, there is above-mentioned limited block 36 one end on inclined-plane 44 to match with the positive stop end 62 of T-type plate 61；When When two springs 45 are uncompressed, it is S1 that two limited blocks 36, which have the distance between the one end on inclined-plane 44,；Two limits of T-type plate 61 The distance between end 62 is S2；S1 is greater than S2.

As shown in figure 26, insert 42 is matched with U-shaped platform 24 of cutting.

Above-mentioned first elastic drum 21 and the second elastic drum 22 are matched with two elastic baffles 4.

As shown in figure 20, the center of circle locating for the radian of the first guide rail segmental arc 51 in above-mentioned first guide rail 17 is led with second The center of circle locating for the radian of the second guide rail segmental arc a57 in rail 18 is concentric.

Above-mentioned elastic baffle 4 is made of plastics.

Lubricating oil is coated on the inner wall of above-mentioned first guide rail 17 and the second guide rail 18.The first slide bar can be thus convenient for 49 smoothly slide in the first guide rail 17, and the second slide bar 50 smoothly slides in the second guide rail 18.

Above-mentioned first arc elastic piece 59 and the second arc elastic piece 58 are made of spring steel plate.

Above-mentioned first elastic drum 21 and the second elastic drum 22 are made of rubber.

Above-mentioned third spring 64 is extension spring；When third spring 64 is not stretched, as shown in figure 20, the second slide bar 50 In the second guide rail straight section a54 of the second guide rail 18, the first slide bar 49 is located at the corresponding first guide rail straight section of the first guide rail 17 In 53；The first elastic drum 21 and the second elastic drum 22 generate extrusion fit at this time, and as shown in figure 25, limited block 36 has oblique The one end in face 44 does not generate extrusion fit with the positive stop end 62 of T-type plate 61.

As shown in figure 15, above-mentioned first spring 35 is compressed spring；When the first spring 35 is uncompressed, on cutting plate 34 Blade 42 is located on the first guide rail 17.Such design is, is centered around in the first guide rail 17 in the first elastic drum 21 sliding When dynamic, the first elastic drum 21 will not generate interference with blade 42.

Above-mentioned second spring 45 is compressed spring；When second spring 45 is uncompressed, limited block 36 has inclined-plane 44 One end is pierced by corresponding square type guide tube 32.

As shown in Fig. 5,17, it further includes Wrap barrel 15 and preservative film 16, as shown in figure 17, wherein on Wrap barrel 15 Preservative film 16 with winding；The both ends of Wrap barrel 15 are mounted on two support rods 48 by way of rotatable engagement；Such as Fig. 6, shown in 7, preservative film 16 is matched with the first elastic drum 21 and the second elastic drum 22；Preservative film 16 and blade 42 match It closes；Preservative film 16 is matched with U-shaped platform 24 of cutting.

As shown in fig. 7, the first elastic drum 21 is matched with the second elastic drum 22；As shown in figure 20, the second slide bar 50 The effect matched respectively with the first arc elastic piece 59 and the second arc elastic piece 58: first, when the second slide bar 50 is located at the In second guide rail straight section a54 of two guide rails 18, the first slide bar 49 is located in the corresponding first guide rail straight section 53 of the first guide rail 17；This When the first elastic drum 21 and the second elastic drum 22 generate extrusion fit；Due to the first guide rail segmental arc in the first guide rail 17 The center of circle locating for radian of the center of circle locating for 51 radian with the second guide rail segmental arc a57 in the second guide rail 18 is concentric, then It is slided in the first slide bar 49 along the first guide rail segmental arc 51 in the first guide rail 17, the second slide bar 50 is along in the second guide rail 18 The second guide rail segmental arc a57 sliding when, need persistently to maintain between the first elastic drum 21 and the second elastic drum 22 crowded Press-fit.Second, in the second guide rail straight section b55 that the second slide bar 50 is located at the second guide rail 18, the first slide bar 49 is located at first In the corresponding first guide rail straight section 53 of guide rail 17；The first elastic drum 21 and the second elastic drum 22 still generate extruding and match at this time It closes.Third slides into the second of the second guide rail 18 from the second guide rail segmental arc a57 transition of the second guide rail 18 in the second slide bar 50 When guide rail straight section b55, the second slide bar 50 squeezes the second arc elastic piece 58, and the second arc elastic piece 58 is driven plain substantially；This It is the original for requiring one end of the second arc elastic piece 58 not to be connected with the guide rail inner top surface of the second guide rail straight section b55 why Cause；When the second slide bar 50 enters the second guide rail straight section b55 of the second guide rail 18, the second arc elastic piece 58 is extensive under reset Nature is arrived again.4th, when the second slide bar 50 is from the second guide rail straight section b55 of the second guide rail 18 to the second guide rail straight section a54 When direction is mobile, the second slide bar 50 can touch the second arc elastic piece 58, and the second slide bar 50 squeezes the second arc elastic at this time Piece 58, the second arc elastic piece 58 are extruded bending, and under the guidance of the second arc elastic piece 58, the second slide bar 50 will not be slided It moves into the second guide rail segmental arc a57, but slides into the second guide rail segmental arc b56；Second slide bar 50 is along the second guide rail Segmental arc b56 is slided to the second guide rail straight section a54, and the second elastic drum 22 is detached to squeeze with the first elastic drum 21 and match at this time It closes, and there are spacing between the second elastic drum 22 and the first elastic drum 21.5th, in the second slide bar 50 from the second guide rail 18 The second guide rail segmental arc b56 transition when sliding into the second guide rail straight section a54 of the second guide rail 18, the second slide bar 50 squeezes first Arc elastic piece 59, the first arc elastic piece 59 are driven plain substantially；This is also to require the one of the first arc elastic piece 59 why The reason of end is not connected with the guide rail inner bottom surface of the second guide rail straight section a54；The second guide rail 18 is entered in the second slide bar 50 When the second guide rail straight section a54, the second arc elastic piece 58 is restored to nature under reset.6th, when the second slide bar 50 from When second guide rail straight section a54 of the second guide rail 18 is mobile to the second guide rail direction straight section b55, the second slide bar 50 can touch first Arc elastic piece 59, the second slide bar 50 squeezes the first arc elastic piece 59 at this time, and the first arc elastic piece 59 is extruded bending, and Under the guidance of the first arc elastic piece 59, the second slide bar 50 will not be slided into the second guide rail segmental arc b56, but slide into In second guide rail segmental arc a57；The mistake that second slide bar 50 is slided along the second guide rail segmental arc a57 to the second guide rail straight section b55 Cheng Zhong, the second elastic drum 22 and the first elastic drum 21 maintain extrusion fit.

When first slide bar 49 and the second slide bar 50 slide in the first guide rail 17 and the second guide rail 18 respectively, the first slide bar 49 Motive force provided by the first promotion item 20, the motive force of the second slide bar 50 is provided by the second promotion item 82.First pushes item 20 Second through-hole 66 corresponding with the second slide bar 50 matches, and first, which pushes item 20 to pass through one end of the first slide bar 49 and second, pushes Item 82 passes through one end of the second slide bar 50 there are spacing and names the spacing for space D, and space D is less than in the second slide bar 50 second The long design in the hole of through-hole 66 is: first, it is U-shaped to push away when U-shaped push plate 19 is pushed to 14 direction of outlet square hole of square shell 2 Plate 19 drives first to push item 20 mobile, and U-shaped push plate 19 drives second to push item 82 mobile through L-type plate 81；So pushed away first Under the promotion of dynamic item 20 and the second promotion item 82, the first slide bar 49 is slided along the first guide rail 17, and the second slide bar 50 is led from second Rail straight section a54 slides into the second guide rail straight section b55 after the second guide rail segmental arc a57；Since first leads in the first guide rail 17 The arc guidance of second guide rail segmental arc a57 in rail segmental arc 51 and the second guide rail 18, in the first slide bar 49 along the first guide rail When segmental arc 51 slides, the first slide bar 49 can be moved up and down along the first promotion item 20；In the second slide bar 50 along the second guide rail When segmental arc a57 is slided, after the second slide bar 50 can be moved upwards up to extreme position along the second promotion item 82, then along second Item 82 is pushed to move still further below；In the second slide bar 50 during moving up, the second slide bar 50 can push on item 82 from second It is slid on the first promotion item 20 by space D；With the guidance of the second guide rail segmental arc a57, the second slide bar 50 can be from first It pushes and is slid on the second promotion item 82 again on item 20 by space D.Space D is less than the second through-hole 66 in the second slide bar 50 The long design in hole is exactly to guarantee: when the second slide bar 50 slides between the first promotion item 20 and the second promotion item 82, the Two slide bars 50 will not be detached from from space D.Second, in U-shaped push plate 19 to the 14 direction complex displacement of outlet square hole far from square shell 2 When dynamic, U-shaped push plate 19 drives first to push item 20 mobile, and U-shaped push plate 19 drives second to push item 82 mobile through L-type plate 81；That In the case where first pushes item 20 and second pushes the pulling of item 82, the first slide bar 49 is slided along the first guide rail 17 to be resetted, and second Slide bar 50 slides into 18 sections of a of the second guide rail from the second guide rail straight section b55 after the second guide rail segmental arc b56；It leads due to first In rail 17 in first guide rail segmental arc 51 and the second guide rail 18 second guide rail segmental arc b56 arc guidance, in the first slide bar 49 When sliding reset along the first guide rail segmental arc 51, the first slide bar 49 can be moved up and down along the first promotion item 20；It is sliding second When bar 50 slides reset along the second guide rail segmental arc b56, the second slide bar 50 can be moved down into pole along the second promotion item 82 After extreme position, moved up again then along the second promotion item 82.

As shown in Figure 22,23, the design that fixed strip 23 is matched with space D is: pushing away in the first promotion item 20 and second During dynamic item 82 drives the first slide bar 49 and the second slide bar 50 mobile respectively, space D allows fixed strip 23 to pass through, and guarantees the One promotion item 20 and the second promotion item 82 can successfully drive the first slide bar 49 and the second slide bar 50 mobile.In addition, in fixed strip 23 are located just in space D and when the second slide bar 50 is located at the second guide rail segmental arc a57, and the second slide bar 50 has slided at this time First pushes on item 20, and the second elastic drum 22 on the second slide bar 50 will not cause to interfere to U-shaped platform 24 of cutting, and guarantees second Slide bar 50 can be slided smoothly in the second guide rail 18.It is located just in space D in fixed strip 23 and the second slide bar 50 is located at second When guide rail segmental arc b56, the second slide bar 50 is located at second and pushes on item 82 at this time, and the second elastic drum on the second slide bar 50 22 will not cause to interfere to U-shaped platform 24 of cutting, and guarantee that the second slide bar 50 can be slided smoothly in the second guide rail 18.

As shown in fig. 7, preservative film 16 is matched with the first elastic drum 21 and the second elastic drum 22；In the first elasticity rolling When cylinder 21 and the second elastic drum 22 generate extrusion fit, preservative film 16 is compressed in the first elastic drum 21 and the second elasticity rolling Between cylinder 22, this ensures that in the first elastic drum 21 and the second elastic drum 22 from the second guide rail straight section a54 to second When the guide rail direction straight section b55 is slided, preservative film 16 is compressed in always between the first elastic drum 21 and the second elastic drum 22 Without departing from.When the first elastic drum 21 and the second elastic drum 22 are from the second guide rail straight section b55 to the second guide rail straight section a54 When direction is slided, extrusion fit can be detached between the first elastic drum 21 and the second elastic drum 22, and then preservative film 16 will not It is compressed between the first elastic drum 21 and the second elastic drum 22.

The effect that first elastic drum 21 and the second elastic drum 22 are matched with two elastic baffles 4 is: first When elastic drum 21 and the second elastic drum 22 are moved to the extreme position of the second guide rail straight section b55,21 He of the first elastic drum Second elastic drum 22 is located at the outlet square hole 14 of square shell 2, and the first elastic drum 21 and the second elastic drum 22 are by two A elastic baffle 4 opens, and the preservative film 16 being extruded between such first elastic drum 21 and the second elasticity can stretch out square shell 2 Outlet square hole 14, convenient for user with hand hold from square shell 2 outlet square hole 14 stretch out one end.At this point, being set in makes When user pulls out preservative film 16 from the shell of direction, preservative film 16 makes the first elastic drum 21, and rotation, preservative film 16 make counterclockwise The second elastic drum 22 is obtained to rotate clockwise.When the first elastic drum 21 and the second elastic drum 22 are no longer to two elastic baffles When 4 effect, under the elastic reset of elastic baffle 4, two elastic baffles 4 reset to reset condition.Two elastic baffles 4 are with right Ground mode is claimed to be mounted in outlet square hole 14, and the design that two one end relative to each other of elastic baffle 4 are in contact is: two When a elastic baffle 4 is not opened, the mutual cooperation of two elastic baffles 4 can be sealed up outlet square hole 14, be avoided outer The dust on boundary enters from outlet square hole 14.

The groove width of cutting sliding slot 5 and promotion sliding slot 6 in the present invention is narrow as far as possible, can thus be reduced as far as Extraneous dust enters in square shell 2, and extension preservative film 16 is by the time that extraneous dust largely adheres to and is dirty.

As shown in Fig. 7,24, the design of the first one-way clutch ring 25 and the second one-way clutch ring 26 is: user from When pulling out preservative film 16 in the shell of direction, the first one-way clutch ring 25 allows the rotation counterclockwise of the first elastic drum 21, does not allow the One elastic drum 21 rotates clockwise；Second one-way clutch ring 26 allows the first elastic drum 21 to rotate clockwise, and does not allow the One rotation counterclockwise of elastic drum 21.First one-way clutch ring 25 does not allow the first elastic drum 21 to rotate clockwise, and second is single The design that does not allow the first elastic drum 21 to rotate counterclockwise to clutch ring 26 it is ensured that: in the first elastic drum 21 and second When elastic drum 22 is mobile to the second guide rail direction straight section b55 from the second guide rail straight section a54, the first elastic drum 21 and the second bullet Property the cooperation of 22 continuous extrusion of roller preservative film 16 is extruded between the first elastic drum 21 and the second elastic drum 22, and it is fresh-keeping Film 16 can be elongated；It is fresh-keeping when preservative film 16 elongates in by 22 moving process of the first elastic drum 21 and the second elastic drum Film cylinder 15 discharges preservative film 16 by rotating, and preservative film 16 is moved through by the first elastic drum 21 and the second elastic drum 22 When elongating in journey, the first one-way clutch ring 25 prevents preservative film 16 that the first elastic drum 21 is driven to rotate clockwise, and second is single Preservative film 16 is prevented to drive the second rotation counterclockwise of elastic drum 22 to clutch ring 26；It finally ensure that preservative film 16 can be smoothly Ground is pulled out from square shell 2.

Item 20, second is pushed to push item 82, pushing block 8, guide block 63, the first slide bar 49, second U-shaped push plate 19, first The design of slide bar 50 and third spring 64 is: first, when pushing block 8 is under external force to 14 side of outlet square hole of square shell 2 To when movement, pushing block 8 drives U-shaped push plate 19 mobile to 14 direction of outlet square hole of square shell 2, and guide block 63 and T-type plate 61 follow U Type push plate 19 is mobile, and third spring 64 is stretched；U-shaped push plate 19 pushes first to push outlet square hole 14 of the item 20 to square shell 2 Direction is mobile, and first pushes item 20 to drive the first slide bar 49 mobile to 14 direction of outlet square hole of square shell 2, and then the first slide bar 49 slide along the first guide rail 17；U-shaped push plate 19 pushes second to push outlet square hole 14 of the item 82 to square shell 2 through L-type plate 81 Direction is mobile, and second pushes item 82 to drive the second slide bar 50 mobile to 14 direction of outlet square hole of square shell 2,50 edge of the second slide bar The second guide rail segmental arc a57 sliding.Second, under the reset response of third spring 64, guide block 63 drives U-shaped push plate 19 mobile It resets, pushing block 8, T-type plate 61, first push item 20 and the second promotion item 82 to follow U-shaped push plate 19 is mobile to reset, and first pushes item 20 the first slide bars 49 of drive move reset along the first guide rail 17, and second pushes item 82 to drive the second slide bar 50 along the second guide rail 18 the second guide rail segmental arc b56 is mobile to be resetted.

As shown in figure 26, blade 42 is with the U-shaped design cutting platform 24 and matching: user pushes pressing plate 33, and pressing plate 33 drives Cutting plate 34 moves down, and the first spring 35 is compressed；Knife after cutting plate 34 is pressed down to greatest extent, on cutting plate 34 Piece 42 is just opposite with U-shaped platform 24 of cutting, and for such user by pushing pressing plate 33, pressing plate 33 drives cutting plate 34, cutting sliding block 29 and blade 42 slided along cutting sliding slot 5, blade 42, which enters, U-shaped cuts cutting preservative film 16 in platform 24.When cutting sliding block 29 After sliding into the other end from one end of cutting sliding slot 5, blade 42 finishes the U-shaped cutting of preservative film 16 cut on platform 24.Work as use After person no longer pushes pressing plate 33, under the reset response of the first spring 35, pressing plate 33 drives cutting plate 34 and blade 42 mobile multiple Position.

For the status requirement of U-shaped push plate 19, U-shaped board 30 and the second support plate 12: the height of U-shaped push plate 19 and U-shaped board 30 Spend it is identical, such T-type plate 61 could with limited block 36 generate extrusion fit relationship.U-shaped board 30 is dialled end 39 and corresponding second Spacing between support plate 12 guarantees that the side plate 60 of U-shaped push plate 19 can pass through.

For executing agency 7: when 42 non-cutting preservative film 16 of blade, cutting sliding block 29 is located at one end of cutting sliding slot 5 Place cuts dialled corresponding in U-shaped board 30 of the shifting block 38 on sliding block 29 and holds 39 to be in contact.As shown in figure 25, limited block 36 has The design that the one end on inclined-plane 44 is matched with the positive stop end 62 of T-type plate 61 is: when U-shaped push plate 19 drives T-type plate 61 to square In the 14 direction moving process of outlet square hole of shell 2, the positive stop end 62 of T-type plate 61 squeezes the inclined-plane 44 on limited block 36, limited block 36 are extruded in square type guide tube 32, and second spring 45 is compressed；After the positive stop end 62 of T-type plate 61 crosses limited block 36, T-type The positive stop end 62 of plate 61 is located between two fixed plates 31, at this time since the inclined-plane 44 on limited block 36 is no longer influenced by extruding, that Under the reset response of second spring 45, there is limited block 36 one end on inclined-plane 44 to stretch out square type guide tube 32 again, limit in this way There is position block 36 the non-inclined-plane of 44 one end of inclined-plane to limit the positive stop end 62 of T-type plate 61, prevent the positive stop end 62 from two of T-type plate 61 It is detached between a fixed plate 31.When cutting sliding block 29 is moved to the other end from one end of cutting sliding slot 5, blade 42 is to preservative film 16 are cut, and during cutting the movement of sliding block 29, the shifting block 38 on cutting sliding block 29 is stirred another in U-shaped board 30 A to be dialled end 39, shifting block 38 drives U-shaped board 30 mobile to the direction of 42 cutting preservative film 16 of blade, and U-shaped board 30 drives ladder type sliding Block 37 slides in ladder type sliding rail 28, and two fixed plates 31, square type guide tube 32, second spring 45, limited block 36 follow U-shaped board 30 It is mobile.During limited block 36 follows U-shaped board 30 mobile, two positive stop ends 62 of T-type plate 61 can just occur being located at two A limited block 36 has in the spacing of the one end on inclined-plane 44；Since two limited blocks 36 have the distance between the one end on inclined-plane 44 For S1, the distance between two positive stop ends 62 of T-type plate 61 are S2, and S1 is greater than S2；It so just will appear the positive stop end of T-type plate 61 62 situations no longer limited by corresponding limited block 36, and U-shaped push plate 19 at this time can utilize the reset force of third spring 64, make U-shaped push plate 19 pulls T-type plate 61 to be detached from between two fixed plates 31, and two limited blocks 36 will no longer limit T-type plate 61.

The design of ladder type sliding block 37 and ladder type sliding rail 28 is in the present invention: ladder type sliding block 37 slides in ladder type sliding rail 28 When, ladder type sliding block 37 will not be detached from from ladder type sliding rail 28；The connection of ladder type sliding block 37 and U-shaped board 30 can make U-shaped board 30 It hangs up.

Specific embodiment: when the Wrap barrel 15 in the present invention needs replacing, cover board 3 being removed, and then passes through left and right The mode of sliding removes one end of Wrap barrel 15 from corresponding support rod 48, then the other end of Wrap barrel 15 will Successfully removed from another support rod 48.One end of Wrap barrel 15 is inserted into corresponding support by new Wrap barrel 15 On bar 48, it is inserted into the other end of Wrap barrel 15 on another support rod 48； One end of preservative film 16 on Wrap barrel 15 is pressed between the first elastic drum 21 and the second elastic drum 22.Second guide rail Outlet square hole 14 of 18 the second guide rail straight section b55 close to square shell 2.

When 8 person of being not used by of pushing block pushes, the second slide bar 50 is located in the second guide rail straight section a54 of the second guide rail 18, First slide bar 49 is located in the corresponding first guide rail straight section 53 of the first guide rail 17；First elastic drum 21 and the second elasticity rolling at this time Cylinder 22 generates extrusion fit, and one end of preservative film 16 is compressed between the first elastic drum 21 and the second elastic drum 22.Limit There is position block 36 one end on inclined-plane 44 not generate extrusion fit with the positive stop end 62 of T-type plate 61.Pressing plate 33 is not pressed down, blade 42 Non- cutting preservative film 16, cutting sliding block 29 be located at cutting sliding slot 5 one end at, at this time cut sliding block 29 on shifting block 38 with it is U-shaped It is accordingly dialled end 39 on plate 30 to be in contact, and a limited block 36 in two at U-shaped board 30 limited block 36 can be with T-type plate 61 On positive stop end 62 generate cooperation.

When the needs of preservative film 16 take out from square shell 2, user push pushing block 8 along push sliding slot 6 to square shell 2 14 direction of outlet square hole it is mobile, pushing block 8 drives U-shaped push plate 19 mobile to 14 direction of outlet square hole of square shell 2,63 He of guide block T-type plate 61 follows U-shaped push plate 19 mobile, and third spring 64 is stretched；U-shaped push plate 19 pushes first to push item 20 to square shell 2 14 direction of outlet square hole it is mobile, first pushes item 20 to drive the first slide bar 49 mobile to 14 direction of outlet square hole of square shell 2, And then the first slide bar 49 is slided along the first guide rail 17；U-shaped push plate 19 pushes second to push item 82 to square shell 2 through L-type plate 81 14 direction of outlet square hole it is mobile, second pushes item 82 to drive the second slide bar 50 mobile to 14 direction of outlet square hole of square shell 2, The second slide bar 50 is mobile from the second guide rail straight section a54 of the second guide rail 18 to the second guide rail direction straight section b55 at this time, the second slide bar 50 can touch the first arc elastic piece 59, and the second slide bar 50 squeezes the first arc elastic piece 59, the first arc elastic piece at this time 59 are extruded bending, and under the guidance of the first arc elastic piece 59, the second slide bar 50 will not slide into the second guide rail segmental arc In b56, but slide into the second guide rail segmental arc a57；Second slide bar 50 is along the second guide rail segmental arc a57 to the second guide rail During straight section b55 is slided, the second elastic drum 22 and the first elastic drum 21 maintain extrusion fit；First elastic drum 21 and second elastic drum 22 preservative film 16 is elongated from Wrap barrel 15 by extrusion fit, Wrap barrel 15 passes through rotation To discharge preservative film 16.Due to the effect of the first one-way clutch ring 25 and the second one-way clutch ring 26, preservative film 16 not will drive First elastic drum 21 rotates clockwise, and preservative film 16 not will drive the second rotation counterclockwise of elastic drum 22；Finally it ensure that Preservative film 16 can be pulled out successfully from square shell 2.

When pushing block 8 is mobile to 14 direction of outlet square hole of square shell 2 under external force, pushing block 8 drives U-shaped push plate 19 Mobile to 14 direction of outlet square hole of square shell 2, guide block 63 and T-type plate 61 follow U-shaped push plate 19 mobile, and third spring 64 is drawn It stretches.The first elastic drum 21 in the case where U-shaped push plate 19 pushes item 20 and the second promotion item 82 to push through first, on the first slide bar 49 When being located at the outlet square hole 14 of square shell 2 with the second elastic drum 22 on the second slide bar 50, the positive stop end 62 of T-type plate 61 is squeezed The inclined-plane 44 on corresponding limited block 36 is pressed, limited block 36 is extruded in square type guide tube 32, and second spring 45 is compressed.Work as T-type After the positive stop end 62 of plate 61 crosses limited block 36, the positive stop end 62 of T-type plate 61 is located between two fixed plates 31, at this time due to limit Inclined-plane 44 on the block 36 of position is no longer influenced by extruding, then limited block 36 has inclined-plane 44 under the reset response of second spring 45 One end stretch out square type guide tube 32 again, such limited block 36 has the non-inclined-plane of 44 one end of inclined-plane by the positive stop end of T-type plate 61 62 limits, prevent the positive stop end 62 of T-type plate 61 to be detached from between two fixed plates 31.This ensures that no longer being passed through in user When pushing block 8 pushes U-shaped push plate 19, the T-type plate 61 in U-shaped push plate 19 is limited, so U-shaped push plate 19 can not self-return, protect Demonstrate,prove the outlet that the second elastic drum 22 on the first elastic drum 21 and the second slide bar 50 on the first slide bar 49 is located at square shell 2 At square hole 14.

In the case where first pushes item 20 and second pushes the promotion of item 82, the first slide bar 49 is slided along the first guide rail 17, the Two slide bars 50 slide into the second guide rail straight section b55 from the second guide rail straight section a54 after the second guide rail segmental arc a57；Due to In one guide rail 17 in first guide rail segmental arc 51 and the second guide rail 18 second guide rail segmental arc a57 arc guidance, it is sliding first When bar 49 is slided along the first guide rail segmental arc 51, the first slide bar 49 can be moved up and down along the first promotion item 20；It is sliding second When bar 50 is slided along the second guide rail segmental arc a57, the second slide bar 50 can be moved upwards up to limit position along the second promotion item 82 It postpones, is moved still further below then along the second promotion item 82；In the second slide bar 50 during moving up, 50 meeting of the second slide bar It is slid on the first promotion item 20 from the second promotion item 82 by space D；With the guidance of the second guide rail segmental arc a57, Two slide bars 50 can slide into again on the second promotion item 82 from the first promotion item 20 by space D.20 He of item is pushed first During second promotion item 82 drives the first slide bar 49 and the second slide bar 50 mobile respectively, space D allows fixed strip 23 to pass through, Guarantee that the first promotion item 20 and the second promotion item 82 can successfully drive the first slide bar 49 and the second slide bar 50 mobile.

When the first elastic drum 21 and the second elastic drum 22 are moved to the extreme position of the second guide rail straight section b55, the One elastic drum 21 and the second elastic drum 22 are located at the outlet square hole 14 of square shell 2, and the first elastic drum 21 and second Elastic drum 22 opens two elastic baffles 4, the preservative film being extruded between such first elastic drum 21 and the second elasticity 16 can stretch out the outlet square hole 14 of square shell 2, hold stretch out from the outlet square hole 14 of square shell 2 one with hand convenient for user End.At this point, when being set in user and pulling out preservative film 16 from the shell of direction, due to the first one-way clutch ring 25 and second unidirectionally from The effect of cyclization 26, preservative film 16 makes the first elastic drum 21, and rotation, preservative film 16 make the second elastic drum 22 counterclockwise It rotates clockwise.This ensures that preservative film 16 will not be pulled out by the first elastic drum 21 and the limitation of the second elastic drum 22, 16 energy user of preservative film is constantly elongated, and Wrap barrel 15 can be driven rotation discharge the preservative film of winding by preservative film 16 16。

After preservative film 16 is pulled out using length, user pushes pressing plate 33, and pressing plate 33 drives cutting plate 34 to move down, First spring 35 is compressed；After cutting plate 34 is pressed down to greatest extent, the blade 42 on cutting plate 34 just cuts platform with U-shaped 24 is opposite, and for such user by pushing pressing plate 33, pressing plate 33 drives cutting plate 34, cutting sliding block 29 and blade 42 along cutting Sliding slot 5 slides, and blade 42, which enters, U-shaped cuts cutting preservative film 16 in platform 24.When one end of cutting sliding block 29 from cutting sliding slot 5 is sliding After moving the other end, blade 42 finishes the U-shaped cutting of preservative film 16 cut on platform 24.Preservative film 16 in square shell 2 is due to quilt During first elastic drum 21 and the second elastic drum 22 are pressed against, and preservative film 16 is drawn out, preservative film 16 is located always In tensioning state；So blade 42 can be easy to the preservative film 16 of cutting tensioning state when with 42 cutting preservative film 16 of blade. After preservative film 16 is cut, 16 one end of preservative film after having been cut can be attached to the U-shaped edge for cutting platform 24.Work as cutting When sliding block 29 is moved to the other end from one end of cutting sliding slot 5, blade 42 cuts preservative film 16；It is moved in cutting sliding block 29 In dynamic process, the contact that the shifting block 38 on sliding block 29 is detached from is accordingly dialled end 39 in U-shaped board 30 is cut, but in blade 42 After having cut preservative film 16, cut sliding block 29 on shifting block 38 stir in U-shaped board 30 another by dial end 39, shifting block 38 drive U-shaped board 30 is mobile to the direction of 42 cutting preservative film 16 of blade, and U-shaped board 30 drives ladder type sliding block 37 sliding in ladder type sliding rail 28 Dynamic, two fixed plates 31, square type guide tube 32, second spring 45, limited block 36 follow U-shaped board 30 mobile.U is followed in limited block 36 During template 30 is mobile, two positive stop ends 62 of T-type plate 61 just can occur being located at two limited blocks 36 with inclined-plane 44 One end spacing in；It is S1, two limits of T-type plate 61 since two limited blocks 36 have the distance between the one end on inclined-plane 44 The distance between position end 62 is S2, and S1 is greater than S2；It so just will appear the positive stop end 62 of T-type plate 61 no longer by corresponding limited block 36 situations limited, and U-shaped push plate 19 at this time can utilize the reset force of third spring 64, and U-shaped push plate 19 is made to pull T-type plate 61 It is detached from between two fixed plates 31, two limited blocks 36 will no longer limit T-type plate 61.In the reset response of third spring 64 Under, guide block 63 drives U-shaped push plate 19 is mobile to reset, and pushing block 8, T-type plate 61, first push item 20 and the second promotion item 82 to follow U Type push plate 19 is mobile to be resetted, and the first promotion item 20 drives the first slide bar 49 to move reset along the first guide rail 17, and second pushes item 82 the second slide bars 50 of drive move reset along the second guide rail segmental arc b56 of the second guide rail 18.First elastic drum 21 and When two elastic drums 22 no longer act on two elastic baffles 4, under the elastic reset of elastic baffle 4, two elastic baffles 4 are multiple Reset condition is arrived in position.

When the second slide bar 50 is mobile to the second guide rail direction straight section a54 from the second guide rail straight section b55 of the second guide rail 18, Second slide bar 50 can touch the second arc elastic piece 58, and the second slide bar 50 squeezes the second arc elastic piece 58, the second arc at this time Shape elastic piece 58 is extruded bending, and under the guidance of the second arc elastic piece 58, the second slide bar 50 will not slide into second and lead In rail segmental arc a57, but slide into the second guide rail segmental arc b56；Second slide bar 50 along the second guide rail segmental arc b56 to Second guide rail straight section a54 sliding, the second elastic drum 22 and the first elastic drum 21 are detached from extrusion fit, and the second elasticity at this time There are spacing between roller 22 and the first elastic drum 21.When the first elastic drum 21 and the second elastic drum 22 are from the second guide rail Straight section b55 is slided through the second guide rail segmental arc b56 to the second guide rail direction straight section a54 when resetting, the first elastic drum 21 and the Extrusion fit can be detached between two elastic drums 22, and then preservative film 16 will not be compressed in the first elastic drum 21 and the second bullet Between property roller 22.

In outlet square hole 14 direction reset movement of the U-shaped push plate 19 to separate square shell 2, U-shaped push plate 19 drives first Push item 20 mobile, U-shaped push plate 19 drives second to push item 82 mobile through L-type plate 81；So item 20 and second is pushed first Under the pulling for pushing item 82, the first slide bar 49 is slided along the first guide rail 17 to be resetted, and the second slide bar 50 is from the second guide rail straight section b55 18 sections of a of the second guide rail are slid into after the second guide rail segmental arc b56；Due to 51 He of the first guide rail segmental arc in the first guide rail 17 The arc guidance of second guide rail segmental arc b56, is slided in the first slide bar 49 along the first guide rail segmental arc 51 in second guide rail 18 When reset, the first slide bar 49 can be moved up and down along the first promotion item 20；In the second slide bar 50 along the second guide rail segmental arc b56 When sliding resets, after the second slide bar 50 can be moved down into extreme position along the second promotion item 82, pushed then along second Item 82 moves up again.Drive the first slide bar 49 and the second slide bar 50 mobile respectively in the first promotion item 20 and the second promotion item 82 During reset, space D allows fixed strip 23 to pass through, and guarantees that the first promotion item 20 and the second promotion item 82 can successfully drive First slide bar 49 and the mobile reset of the second slide bar 50.

When the first elastic drum 21 and the second elastic drum 22 are mobile resets to home position, the second slide bar 50 is located at the In second guide rail straight section a54 of two guide rails 18, the first slide bar 49 is located in the corresponding first guide rail straight section 53 of the first guide rail 17；This When the first elastic drum 21 and the second elastic drum 22 regenerate extrusion fit, preservative film 16 is compressed in the first elasticity again Between roller 21 and the second elastic drum 22.

When preservative film 16 needs to pull out again, user can repeat the above process again.

It is compared to 16 cutter device of preservative film popular on the market, cutter device of the invention is not needed frequently to open and be protected The lid of fresh 16 cutter device of film, can be achieved with taking out preservative film 16 from cutter device, it is frequent to considerably increase user Take the convenience of preservative film 16.In addition, it is compared to 16 cutter device of preservative film for not needing to open lid on the market, the present invention Cutter device in the process cut of preservative film 16 be to be completed in square shell 2, and after preservative film 16 is cut, The one section of preservative film 16 pulled out from Wrap barrel 15 is retained in square shell 2, be retained in preservative film 16 in square shell 2 by To under the bridging effect of square shell 2, bottom plate 1, lid and elastic baffle 4, the dust of outside air flowing is difficult to be adsorbed on square The one section of preservative film 16 pulled out from Wrap barrel 15 in shell 2, reduces one section of 16 quilt of preservative film pulled out on Wrap barrel 15 The probability of many dust pollutions, extends the clean time of the one section of preservative film 16 pulled out on Wrap barrel 15.It is cut in the present invention It cuts device to be conveniently applied in family life, after especially having wrapped up food in family life, preservative film 16 can be detained very Long a period of time could be used again, and in the time that this section is detained, the one section of preservative film 16 pulled out on fresh film cylinder is not easy by dust Pollution, ensure that the safety of next packaged food.

In conclusion main beneficial effect of the invention is: for the pushing block in the present invention under external force promotion, pushing block pushes U Type push plate makes the first promotion item push the first slide bar, and second pushes item to push the second slide bar；And then guarantee the first elastic drum Pass through extrusion fit by preservative film from the outlet square hole for reaching square shell in square shell with the second elastic drum, it is convenient to use Person takes out preservative film from cutter device, avoids traditional Casing with means for cutting the preservation film and needs frequently to open Casing with means for cutting the preservation film lid Take the trouble of preservative film.For cutter device of the invention after the completion of cutting, the first elastic drum and the second elastic drum can be automatic It is mobile to reset to be again pressed against preservative film, so that next time is reused, considerably increase the convenience of operation.In addition, this The cutter device of invention can avoid to a certain extent the preservative film in cutter device from being contaminated by dust, and extend in cutter device and protect The clean time of fresh film, it ensure that the safety of next packaged food.The configuration of the present invention is simple has preferable using effect.

Claims

1. a kind of device for plastics packed cutting preservative film, it is characterised in that: it includes bottom plate, square shell, cover board, bullet Property baffle, cutting sliding slot, push sliding slot, executing agency, pushing block, the first support plate, the second support plate, bar shaped guide rail, exporter Hole, the first guide rail, the second guide rail, U-shaped push plate, first push item, second to push item, L-type plate, the first elastic drum, the second bullet Property roller, fixed strip, it is U-shaped cut platform, the first one-way clutch ring, the second one-way clutch ring, support rod, the first slide bar, the second slide bar, First arc elastic piece, the second arc elastic piece, T-type plate, guide block, third spring, first through hole, the second through-hole, insole board On square shell is installed；Cover board is mounted on square shell far from one end of bottom plate；The side shell surface middle position of square shell is provided with out Mouth square hole；Two elastic baffles are mounted in outlet square hole in a manner of symmetrically, and one end that two elastic baffles are relative to each other It is in contact；It is provided with the cutting sliding slot of perforation on cover board and pushes sliding slot；Executing agency installs on the cover board；Bottom plate is far from square shell Outlet square hole one end upper surface on symmetrically installation there are two the first support plate；Two support rods are pacified in a manner of symmetrically In two the first support plates, and two support rods are located between two the first support plates；Bottom plate is close to the outlet of square shell Symmetrically there are two the second support plates for installation on the upper surface of one end of square hole；Two bar shaped guide rails are separately mounted to two second Support plate is far from one end of bottom plate；

The structure installed on two the second support plates side surface relative to each other is all the same, for wherein any one second The side surface of fagging: the first guide rail and the second guide rail are mounted on the side surface of the second support plate, and the first guide rail is located at second The upper end of guide rail；First guide rail is made of the first guide rail segmental arc and two the first guide rail straight sections, and the first guide rail segmental arc Both ends are connected with two the first guide rail straight sections respectively；Second guide rail is by the second guide rail segmental arc a, the second guide rail segmental arc b, Two guide rail straight section a and the second guide rail straight section b are constituted；The radian phase of the radian of second guide rail segmental arc a and the second guide rail segmental arc b Together, and the second guide rail segmental arc a and the second guide rail segmental arc b by up and down symmetrically in a manner of be distributed；Second guide rail segmental arc a is located at On second guide rail segmental arc b；The both ends of second guide rail segmental arc a are connected with the both ends of the second guide rail segmental arc b respectively；The One end junction of two guide rail segmental arc a and the second guide rail segmental arc b are connected with the second guide rail straight section a, and other end junction connects It is connected to the second guide rail straight section b；It is equipped on second guide rail segmental arc a and the guide rail inner top surface of the second connection guide rail straight section b Second arc elastic piece, and the guide rail of the second arc elastic piece one end far from the second guide rail straight section b and the second guide rail segmental arc a Inner top surface is connected, and the other end is not connected with the guide rail inner top surface of the second guide rail straight section b；Second guide rail segmental arc b and second First arc elastic piece is installed, and the first arc elastic piece is far from second on the guide rail inner bottom surface of the connection guide rail straight section a One end of guide rail straight section a is connected with the guide rail inner bottom surface of the second guide rail segmental arc b, and the other end is not with the second guide rail straight section a's Guide rail inner bottom surface is connected；

The both ends of first slide bar are separately mounted in two the first guide rails by way of being slidably matched；The both ends of second slide bar are logical The mode being slidably matched is crossed to be separately mounted in two the second guide rails；First through hole there are two symmetrically being opened on first slide bar；Two A first one-way clutch ring is mounted on the periphery of the first slide bar in a manner of symmetrically, and two the first one-way clutch rings are located at Between two first through hole；The both ends of first elastic drum are separately mounted on the periphery of two the first one-way clutch rings；The Second through-hole there are two symmetrically being opened on two slide bars；Two the second one-way clutch rings are mounted on the second slide bar in a manner of symmetrically On periphery, and two the second one-way clutch rings are located between two the second through-holes；It installs respectively at the both ends of second elastic drum On the periphery of two the second one-way clutch rings；First elastic drum is matched with the second elastic drum；Second slide bar difference It is matched with the first arc elastic piece and the second arc elastic piece；

U-shaped push plate is made of stripe board and two side plates；One end of pushing block is mounted on the middle position of the stripe board of U-shaped push plate On surface, the other end passes through the promotion sliding slot of cover board；Pushing block, which slides on, to be pushed in sliding slot；One end of T-type plate is mounted on U-shaped push plate Stripe board middle position side surface on；T-type plate is located between two side plates of U-shaped push plate；There are two limits for T-type plate tool End, and two stripe boards of the positive stop end far from U-shaped push plate；Two positive stop ends of T-type plate are matched with executing agency；U-shaped push plate Two side plates be mounted on a guide block, and two guide blocks are symmetrical；Two guide blocks are mounted on by way of being slidably matched In two bar shaped guide rails；One end of two third springs is separately mounted on two guide blocks, and the other end is separately mounted to two items On the medial surface of shape guide rail；Two third springs are located in two bar shaped guide rails；At one end of two side plates of U-shaped push plate It is mounted on one first promotion item；First in the same side pushes item, the first slide bar and the second slide bar, and the first promotion item is worn Cross the corresponding first through hole of the first slide bar；First promotion item the second through-hole corresponding with the second slide bar matches；Two L-type plates One end is separately mounted to two side plates of U-shaped push plate and is pushed on one end of item far from corresponding first, and the other end is separately installed with the Two push item；Second in the same side pushes item, the first slide bar and the second slide bar, and second pushes item corresponding across the second slide bar The second through-hole；In the same side first push item and second push item: first push item pass through the first slide bar one end with Second pushes item opposite across one end of the second slide bar, and the first promotion item passes through one end of the first slide bar and the second promotion item passes through One end of second slide bar is there are spacing and names the spacing for space D, and space D is long less than the hole of the second through-hole in the second slide bar；

It is U-shaped to cut platform and be separately mounted to be mounted in two the second support plates by two fixed strips；Fixed strip is located at corresponding second Between second guide rail segmental arc a of guide rail and the second guide rail segmental arc b；Above-mentioned executing agency matches with U-shaped platform of cutting；

Fixed strip, the first promotion item and second in the same side push item: fixed strip is matched with space D；

Above-mentioned executing agency includes ladder type sliding rail, cutting sliding block, U-shaped board, fixed plate, square type guide tube, pressing plate, cutting plate, first Spring, ladder type sliding block, shifting block, is dialled end, stripe board, card slot, blade, sliding channel, inclined-plane, second spring at limited block, wherein The sliding channel of perforation is provided in cutting sliding block；It symmetrically opens there are two card slot the two sides of cutting sliding block；Cutting sliding block passes through cunning The mode of dynamic cooperation is mounted in cutting sliding slot；Cutting plate is mounted on the sliding channel of cutting sliding block by way of being slidably matched In, and the both ends of cutting plate are pierced by cutting sliding block；One end of cutting plate is equipped with blade, and the other end is equipped with pressing plate；Pressing plate On cover board；First spring is nested on cutting plate, and on one end installation pressing plate of the first spring, the other end, which is mounted on, to be cut It cuts on sliding block；It cuts and shifting block is installed on the side of sliding block；Ladder type sliding rail is mounted on the lower surface of cover board, and ladder type sliding rail leans on Nearly cutting sliding slot；Ladder type sliding block is mounted in ladder type sliding rail by way of being slidably matched；Ladder type sliding block is pierced by ladder type sliding rail One end is equipped with U-shaped board；U-shaped board is made of stripe board and two by end is dialled；Shifting block is matched with two by end is dialled；Two square types Guide tube passes through fixed plate and is mounted in the stripe board of U-shaped board, and two square type guide tubes are dialled end far from U-shaped board；Two limits Position block is separately mounted in two square type guide tubes by way of being slidably matched；One end of two second springs is separately mounted to two On a limited block, the other end is separately mounted on the bottom cylinder face of two square type guide tubes；Two second springs are located at two squares In type guide tube；Each limited block has inclined-plane far from one end of corresponding second spring；

Above-mentioned limited block has bevelled one end and matches with the positive stop end of T-type plate；When second spring is uncompressed, two limits It is S1 that block, which has the distance between bevelled one end,；The distance between two positive stop ends of T-type plate are S2；S1 is greater than S2；

Insert is matched with U-shaped platform of cutting；

Above-mentioned first elastic drum and the second elastic drum are matched with two elastic baffles；

The center of circle locating for the radian of the first guide rail segmental arc in above-mentioned first guide rail and the second guide rail arc in the second guide rail The center of circle locating for the radian of section a is concentric.

2. a kind of device for plastics packed cutting preservative film according to claim 1, it is characterised in that: above-mentioned bullet Property baffle is made of plastics.

3. a kind of device for plastics packed cutting preservative film according to claim 1, it is characterised in that: above-mentioned Lubricating oil is coated on the inner wall of one guide rail and the second guide rail.

4. a kind of device for plastics packed cutting preservative film according to claim 1, it is characterised in that: above-mentioned One arc elastic piece and the second arc elastic piece are made of spring steel plate.

5. a kind of device for plastics packed cutting preservative film according to claim 1, it is characterised in that: above-mentioned One elastic drum and the second elastic drum are made of rubber.

6. a kind of device for plastics packed cutting preservative film according to claim 1, it is characterised in that: above-mentioned Three springs are extension spring；When third spring is not stretched, the second slide bar is located in the second guide rail straight section a of the second guide rail, First slide bar is located in the corresponding first guide rail straight section of the first guide rail；The first elastic drum and the second elastic drum, which generate, at this time squeezes Press-fit, limited block have bevelled one end and do not generate extrusion fit with the positive stop end of T-type plate.

7. a kind of device for plastics packed cutting preservative film according to claim 1, it is characterised in that: above-mentioned One spring is compressed spring；When the first spring is uncompressed, cutting plate cutter is located on the first guide rail.

8. a kind of device for plastics packed cutting preservative film according to claim 1, it is characterised in that: above-mentioned Two springs are compressed spring；When second spring is uncompressed, limited block has bevelled one end and is pierced by corresponding square type guide tube.

9. a kind of device for plastics packed cutting preservative film according to claim 1, it is characterised in that: it is also wrapped Wrap barrel and preservative film are included, wherein there is on Wrap barrel the preservative film of winding；The both ends of Wrap barrel pass through rotatable engagement Mode be mounted on two support rods；Preservative film is matched with the first elastic drum and the second elastic drum；Preservative film and knife Piece matches；Preservative film is matched with U-shaped platform of cutting.