CN109250562B

CN109250562B - Preservative film cutter for plastic packaging

Info

Publication number: CN109250562B
Application number: CN201811099774.9A
Authority: CN
Inventors: 吴军华; 蔡群; 唐立帆
Original assignee: Qingdao Jiali Packaging Materials Co Ltd
Current assignee: Boao Zongheng Network Technology Co ltd; Qingdao Jiali Packaging Materials Co ltd
Priority date: 2018-09-20
Filing date: 2018-09-20
Publication date: 2020-02-07
Anticipated expiration: 2038-09-20
Also published as: CN110950151B; CN110950151A; CN110950152A; CN110950152B; CN109250562A

Abstract

The invention belongs to the technical field of cutting, and particularly relates to a preservative film cutter for plastic packaging. In addition, the cutter can prevent the preservative film in the cutter from being polluted by dust to a certain extent, prolong the clean time of the preservative film in the cutter and ensure the safety of food packaged next time. The design of the wind power mechanism in the cutter can completely ensure that the preservative film can be completely extruded after the first elastic roller and the second elastic roller move and reset, and the condition that one end of the cut preservative film can not be extruded again by the first elastic roller and the second elastic roller after falling off from the U-shaped cutting table is avoided.

Description

Preservative film cutter for plastic packaging

Technical Field

The invention belongs to the technical field of cutting, and particularly relates to a preservative film cutter for plastic packaging.

Background

The preservative film is a plastic packaging product and is mainly used for packaging foods, ornaments, articles for daily use, gift boxes and the like; especially in the field of food, the use of wrap films has been very frequent. In life, it is often found that after the preservative film is packaged with food, no cutting tool is used for cutting the preservative film, and a better preservative film cutter is already available on the market for solving the trouble of cutting the preservative film. In the using process of the preservative film cutter popular in the market, the cover of the preservative film cutter is always required to be opened, so that the preservative film can be pulled out of the preservative film roller, and then the preservative film is cut by a cutting tool carried by the preservative film cutter; thus, the conventional wrap film cutter in the market has a trouble that the cover of the wrap film cutter needs to be opened each time the wrap film is pulled out to pack the item. For the cutter which needs to open the cover frequently, the frequent packaging of the cutter used in the supermarket has certain trouble, and in order to avoid opening the cover of the preservative film cutter all the time in the using process, a novel preservative film cutter which does not need to open the cover of the preservative film cutter frequently is designed. In addition, after the preservative film is cut, the outer end of the cut preservative film is often exposed in the outside air, and after the preservative film is placed in the outside air for a long time, the preservative film exposed outside the cutter is easy to adsorb a lot of dust, which brings certain pollution to food packaging; the cutter of the invention reduces the pollution of dust in the outside air in a certain aspect, so that the preservative film can be more environment-friendly.

The invention designs a preservative film cutter for plastic packaging to solve the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a preservative film cutter for plastic packaging, which is realized by adopting the following technical scheme.

In the description of the present invention, it should be noted that the terms "inside", "below", "upper" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention usually place when using, and are only used for convenience of description and simplification of description, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation or be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

A plastic wrap cutterbar for plastic packaging which characterized in that: the device comprises a bottom plate, a square shell, a cover plate, an elastic baffle, a cutting chute, a pushing chute, an actuating mechanism, a pushing block, a wind mechanism, a first supporting plate, a second supporting plate, a strip-shaped guide rail, an outlet square hole, a first guide rail, a second guide rail, a U-shaped push plate, a first pushing strip, a second pushing strip, an L-shaped plate, a first elastic roller, a second elastic roller, a fixing strip, a U-shaped cutting table, a first one-way separating ring, a second one-way separating ring, a supporting rod, a first sliding rod, a second sliding rod, a first arc-shaped elastic sheet, a second arc-shaped elastic sheet, a T-shaped plate, a guide block, a third spring, a first through hole and a second through hole, wherein the square shell is arranged on the bottom plate; the cover plate is arranged at one end of the square shell far away from the bottom plate; an outlet square hole is formed in the middle of the side shell surface of the square shell; the two elastic baffles are symmetrically arranged in the outlet square hole, and the opposite ends of the two elastic baffles are in contact with each other; the cover plate is provided with a through cutting chute and a pushing chute; the actuating mechanism is arranged on the cover plate; two first supporting plates are symmetrically arranged on the upper surface of one end of the bottom plate, which is far away from the square outlet hole of the square shell; the two support rods are symmetrically arranged on the two first support plates and are positioned between the two first support plates; two second supporting plates are symmetrically arranged on the upper surface of one end of the bottom plate, which is close to the square outlet hole of the square shell; two strip-shaped guide rails are respectively arranged at one end of the two second supporting plates far away from the bottom plate.

The structures mounted on the side surfaces of the two second support plates opposite to each other are the same, and for the side surface of any one of the second support plates: the first guide rail and the second guide rail are arranged on the side surface of the second support plate, and the first guide rail is positioned at the upper end of the second guide rail; the first guide rail is composed of a first guide rail arc section and two first guide rail straight sections, and two ends of the first guide rail arc section are respectively connected with the two first guide rail straight sections; the second guide rail is composed of a second guide rail arc section a, a second guide rail arc section b, a second guide rail straight section a and a second guide rail straight section b; the radian of the second guide rail arc-shaped section a is the same as that of the second guide rail arc-shaped section b, and the second guide rail arc-shaped section a and the second guide rail arc-shaped section b are distributed in an up-down symmetrical mode; the second guide rail arc section a is positioned above the second guide rail arc section b; two ends of the second guide rail arc section a are respectively connected with two ends of the second guide rail arc section b; the joint of the second guide rail arc section a and one end of the second guide rail arc section b is connected with a second guide rail straight section a, and the joint of the other end of the second guide rail arc section a is connected with a second guide rail straight section b; a second arc-shaped elastic sheet is arranged on the inner top surface of the guide rail at the joint of the second guide rail arc-shaped section a and the second guide rail straight section b, one end of the second arc-shaped elastic sheet, which is far away from the second guide rail straight section b, is connected with the inner top surface of the guide rail of the second guide rail arc-shaped section a, and the other end of the second arc-shaped elastic sheet is not connected with the inner top surface of the guide rail of the second guide rail straight section b; and a first arc-shaped elastic sheet is arranged on the inner bottom surface of the guide rail at the joint of the second guide rail arc-shaped section b and the second guide rail straight section a, one end of the first arc-shaped elastic sheet, which is far away from the second guide rail straight section a, is connected with the inner bottom surface of the guide rail of the second guide rail arc-shaped section b, and the other end of the first arc-shaped elastic sheet is not connected with the inner bottom surface of the guide rail of the second guide rail straight section a.

Two ends of the first sliding rod are respectively arranged in the two first guide rails in a sliding fit manner; two ends of the second sliding rod are respectively arranged in the two second guide rails in a sliding fit manner; two first through holes are symmetrically formed in the first sliding rod; the two first one-way clutch rings are symmetrically arranged on the outer circular surface of the first slide bar and are positioned between the two first through holes; two ends of the first elastic roller are respectively arranged on the outer circular surfaces of the two first one-way clutch rings; two second through holes are symmetrically formed in the second sliding rod; the two second one-way clutch rings are symmetrically arranged on the outer circular surface of the second sliding rod and are positioned between the two second through holes; two ends of the second elastic roller are respectively arranged on the outer circular surfaces of the two second one-way clutch rings; the first elastic roller is matched with the second elastic roller; the second sliding rod is respectively matched with the first arc-shaped elastic piece and the second arc-shaped elastic piece.

The U-shaped push plate consists of a strip-shaped plate and two side plates; one end of the push block is arranged on the upper surface of the middle position of the strip-shaped plate of the U-shaped push plate, and the other end of the push block penetrates through the push chute of the cover plate; the push block slides in the push sliding chute; one end of the T-shaped plate is arranged on the side surface of the middle position of the strip-shaped plate of the U-shaped push plate; the T-shaped plate is positioned between the two side plates of the U-shaped push plate; the T-shaped plate is provided with two limiting ends, and the two limiting ends are far away from the strip-shaped plate of the U-shaped push plate; two limiting ends of the T-shaped plate are matched with the actuating mechanism; two side plates of the U-shaped push plate are respectively provided with a guide block, and the two guide blocks are symmetrical; the two guide blocks are arranged in the two strip-shaped guide rails in a sliding fit manner; one end of each of the two third springs is respectively arranged on the two guide blocks, and the other end of each of the two third springs is respectively arranged on the inner side surfaces of the two strip-shaped guide rails; the two third springs are respectively positioned in the two strip-shaped guide rails; one end of each of the two side plates of the U-shaped push plate is provided with a first pushing strip; the first pushing strip, the first sliding rod and the second sliding rod are positioned on the same side, and the first pushing strip penetrates through the corresponding first through hole of the first sliding rod; the first pushing strip is matched with a corresponding second through hole of the second sliding rod; one end of each of the two L-shaped plates is respectively arranged at one end, far away from the corresponding first pushing strip, of each of the two side plates of the U-shaped push plate, and the other end of each of the two L-shaped plates is respectively provided with a second pushing strip; the second pushing strip, the first sliding rod and the second sliding rod are positioned on the same side, and the second pushing strip penetrates through a corresponding second through hole of the second sliding rod; first and second push bars on the same side: the first pushing strip penetrates through one end of the first sliding rod and is opposite to one end, penetrating through the second sliding rod, of the second pushing strip, a distance exists between one end, penetrating through the first sliding rod, of the first pushing strip and one end, penetrating through the second sliding rod, of the second pushing strip, the distance is named as a distance D, and the distance D is smaller than the hole length of the second through hole in the second sliding rod.

The U-shaped cutting table is respectively arranged on the two second supporting plates through two fixing strips; the fixed strip is positioned between the second guide rail arc section a and the second guide rail arc section b of the corresponding second guide rail; the executing mechanism is matched with the U-shaped cutting table.

The fixing strip, the first pushing strip and the second pushing strip are positioned on the same side: the fixing strips are matched with the distance D.

The two wind mechanisms are symmetrically arranged on the bottom plate and are positioned between the first supporting plate and the second supporting plate; the two wind mechanisms are respectively matched with the two second pushing strips.

The executing mechanism comprises a trapezoidal sliding rail, a cutting sliding block, a U-shaped plate, a fixing plate, a rectangular guide cylinder, a pressing plate, a cutting plate, a first spring, a limiting block, a trapezoidal sliding block, a shifting block, a shifted end, a strip-shaped plate, a clamping groove, a blade, a sliding through groove, an inclined plane and a second spring, wherein the cutting sliding block is internally provided with a through sliding through groove; two clamping grooves are symmetrically formed in two sides of the cutting sliding block; the cutting slide block is arranged in the cutting chute in a sliding fit manner; the cutting plate is arranged in the sliding through groove of the cutting sliding block in a sliding fit mode, and two ends of the cutting plate penetrate out of the cutting sliding block; one end of the cutting plate is provided with a blade, and the other end of the cutting plate is provided with a pressing plate; the pressing plate is positioned on the cover plate; the first spring is nested on the cutting plate, one end of the first spring is arranged on the pressing plate, and the other end of the first spring is arranged on the cutting slide block; a shifting block is arranged on the side surface of the cutting slide block; the trapezoidal sliding rail is arranged on the lower surface of the cover plate and is close to the cutting sliding groove; the ladder-shaped sliding block is arranged in the ladder-shaped sliding rail in a sliding fit manner; one end of the trapezoidal sliding block, which penetrates out of the trapezoidal sliding rail, is provided with a U-shaped plate; the U-shaped plate consists of a strip-shaped plate and two dialed ends; the shifting block is matched with the two shifted ends; the two rectangular guide cylinders are both arranged on the strip-shaped plate of the U-shaped plate through a fixing plate, and the two rectangular guide cylinders are far away from the end, to be poked, of the U-shaped plate; the two limiting blocks are respectively arranged in the two rectangular guide cylinders in a sliding fit manner; one end of each of the two second springs is respectively arranged on the two limiting blocks, and the other end of each of the two second springs is respectively arranged on the bottom cylinder surfaces of the two rectangular guide cylinders; the two second springs are respectively positioned in the two rectangular guide cylinders; one end of each limiting block, which is far away from the corresponding second spring, is provided with an inclined surface.

The wind power mechanism comprises a first bevel gear, a steel wire rope, a third one-way clutch ring, a winding wheel, a volute spiral spring, a third support plate, a first connecting block, a second connecting block, a first rotating shaft, a second bevel gear, a second rotating shaft, a fourth support plate, a blowing fan and a fixed block, wherein the third support plate and the fourth support plate are arranged on the bottom plate; the first rotating shaft is arranged in a circular hole of the third supporting plate through a bearing, and two ends of the first rotating shaft penetrate through the third supporting plate; a third one-way clutch ring is arranged on the outer circular surface of one end of the first rotating shaft, and a first bevel gear is arranged at the other end of the first rotating shaft; the winding wheel is arranged on the outer circular surface of the third one-way clutch ring; the spiral spring is nested on the first rotating shaft, one end of the spiral spring is installed on the side face of the winding wheel through a first connecting block, and the other end of the spiral spring is installed on the third supporting plate through a second connecting block; the scroll spring is positioned between the winding wheel and the third supporting plate; the second rotating shaft is arranged in a round hole of the fourth supporting plate through a bearing, and two ends of the second rotating shaft penetrate through the fourth supporting plate; one end of the second rotating shaft is provided with a blowing fan, and the other end of the second rotating shaft is provided with a second bevel gear; the first bevel gear is meshed with the second bevel gear; the fixed block is arranged on the side surface of one end of the second pushing strip connected with the corresponding L-shaped plate; one end of the steel wire rope is arranged on the winding wheel in a winding mode, and the other end of the steel wire rope is arranged on the fixing block.

One end of the limiting block with the inclined plane is matched with the limiting end of the T-shaped plate; when the second spring is not compressed, the distance between one ends of the two limit blocks with the inclined planes is S1; the distance between the two limiting ends of the T-shaped plate is S2; s1 is greater than S2.

The blade is matched with the U-shaped cutting table.

The first elastic roller and the second elastic roller are matched with the two elastic baffle plates.

The circle center of the radian of the first guide rail arc-shaped section in the first guide rail is concentric with the circle center of the radian of the second guide rail arc-shaped section a in the second guide rail.

As a further improvement of the technology, the elastic baffle is made of plastic.

As a further improvement of this technique, the inner wall surfaces of the first guide rail and the second guide rail are both coated with lubricating oil. Therefore, the first sliding rod can slide in the first guide rail smoothly, and the second sliding rod can slide in the second guide rail smoothly.

As a further improvement of the present technology, the first arc-shaped elastic piece and the second arc-shaped elastic piece are made of elastic steel plates.

As a further improvement of the present technology, the first elastic roller and the second elastic roller are made of rubber.

As a further improvement of the present technology, the third spring is an extension spring; when the third spring is not stretched, the second slide bar is positioned in the second guide rail straight section a of the second guide rail, and the first slide bar is positioned in the corresponding first guide rail straight section of the first guide rail; at the moment, the first elastic roller and the second elastic roller are in extrusion fit, and one end of the limiting block with the inclined plane is not in extrusion fit with the limiting end of the T-shaped plate.

As a further improvement of the present technology, the first spring is a compression spring; when the first spring is uncompressed, the cutting board upper blade is positioned above the first guide rail. This is designed so that the first resilient roller does not interfere with the blade when the first resilient roller slides around the first guide rail.

As a further improvement of the present technology, the second spring is a compression spring; when the second spring is not compressed, one end of the limiting block with the inclined plane penetrates out of the corresponding rectangular guide cylinder.

As a further improvement of the technology, the fresh-keeping film device further comprises a fresh-keeping film cylinder and a fresh-keeping film, wherein the fresh-keeping film cylinder is provided with the wound fresh-keeping film; two ends of the preservative film cylinder are arranged on the two supporting rods in a rotating fit mode; the preservative film is matched with the first elastic roller and the second elastic roller; the preservative film is matched with the blade; the preservative film is matched with the U-shaped cutting table.

The first elastic roller is matched with the second elastic roller; the second slide bar respectively with first arc flexure strip and second arc flexure strip matched with effect: firstly, when the second slide bar is positioned in the second guide rail straight section a of the second guide rail, the first slide bar is positioned in the corresponding first guide rail straight section of the first guide rail; at the moment, the first elastic roller and the second elastic roller are in extrusion fit; because the center of circle of the radian of the first guide rail arc-shaped section in the first guide rail is concentric with the center of circle of the radian of the second guide rail arc-shaped section a in the second guide rail, when the first slide bar slides along the first guide rail arc-shaped section in the first guide rail and the second slide bar slides along the second guide rail arc-shaped section a in the second guide rail, the first elastic roller and the second elastic roller need to be continuously maintained in extrusion fit. Secondly, when the second slide bar is positioned in the second guide rail straight section b of the second guide rail, the first slide bar is positioned in the corresponding first guide rail straight section of the first guide rail; at the moment, the first elastic roller and the second elastic roller are still in extrusion fit. Thirdly, when the second slide bar transits and slides from the second guide rail arc section a of the second guide rail to the second guide rail straight section b of the second guide rail, the second slide bar extrudes the second arc-shaped elastic sheet, and the second arc-shaped elastic sheet is basically flattened; this is why it is required that one end of the second arc-shaped elastic piece is not connected with the inner top surface of the guide rail of the second guide rail straight section b; when the second slide bar enters the second guide rail straight section b of the second guide rail, the second arc-shaped elastic piece restores to a natural state under the reset. Fourthly, when the second slide bar moves from the second guide rail straight section b of the second guide rail to the second guide rail straight section a, the second slide bar can touch the second arc-shaped elastic piece, the second slide bar extrudes the second arc-shaped elastic piece at the moment, the second arc-shaped elastic piece is extruded and bent, and under the guidance of the second arc-shaped elastic piece, the second slide bar can not slide into the second guide rail arc-shaped section a but can slide into the second guide rail arc-shaped section b; the second sliding rod slides to the second guide rail straight section a along the second guide rail arc section b, at the moment, the second elastic roller is separated from the first elastic roller in extrusion fit, and a space exists between the second elastic roller and the first elastic roller. Fifthly, when the second slide bar slides from the second guide rail arc section b of the second guide rail to the second guide rail straight section a of the second guide rail in a transition manner, the second slide bar extrudes the first arc-shaped elastic sheet, and the first arc-shaped elastic sheet is basically flattened; this is why it is required that one end of the first arc-shaped elastic piece is not connected with the inner bottom surface of the guide rail of the second guide rail straight section a; when the second slide bar enters the second guide rail straight section a of the second guide rail, the second arc-shaped elastic piece restores to a natural state under the reset. Sixthly, when the second slide bar moves from the second guide rail straight section a of the second guide rail to the second guide rail straight section b, the second slide bar can touch the first arc-shaped elastic piece, the second slide bar extrudes the first arc-shaped elastic piece at the moment, the first arc-shaped elastic piece is extruded and bent, and under the guidance of the first arc-shaped elastic piece, the second slide bar can not slide into the second guide rail arc-shaped section b but can slide into the second guide rail arc-shaped section a; in the process that the second slide bar slides to the straight section b of the second guide rail along the arc section a of the second guide rail, the second elastic roller and the first elastic roller are in extrusion fit.

When the first sliding rod and the second sliding rod slide in the first guide rail and the second guide rail respectively, the pushing force of the first sliding rod is provided by the first pushing bar, and the pushing force of the second sliding rod is provided by the second pushing bar. First promotion strip and the corresponding second through-hole of second slide bar cooperate, and first one end that promotes the strip and pass first slide bar and the second promotes the one end that the strip passed the second slide bar and has the interval and name this interval and be interval D, and interval D is less than the design of the hole length of second through-hole in the second slide bar and lies in: firstly, when the U-shaped push plate pushes towards the outlet square hole of the square shell, the U-shaped push plate drives a first push strip to move, and the U-shaped push plate drives a second push strip to move through the L-shaped plate; under the push of the first push bar and the second push bar, the first slide bar slides along the first guide rail, and the second slide bar slides into the second guide rail straight section b after passing through the second guide rail arc section a from the second guide rail straight section a; due to the arc-shaped guide of the arc-shaped section of the first guide rail in the first guide rail and the arc-shaped section a of the second guide rail in the second guide rail, when the first sliding rod slides along the arc-shaped section of the first guide rail, the first sliding rod can move up and down along the first pushing strip; when the second sliding rod slides along the arc section a of the second guide rail, the second sliding rod moves upwards to the limit position along the second pushing strip and then moves downwards along the second pushing strip; in the process that the second sliding rod moves upwards, the second sliding rod slides into the first pushing strip from the second pushing strip through the distance D; the second sliding rod slides from the first pushing strip to the second pushing strip again through the distance D along with the guidance of the arc-shaped section a of the second guide rail. The design that the distance D is smaller than the hole length of the second through hole in the second slide bar is to ensure that: the second slide bar does not disengage from the spacing D as the second slide bar slides between the first push bar and the second push bar. Secondly, when the U-shaped push plate moves in a reset mode towards the direction away from the square outlet hole of the square shell, the U-shaped push plate drives the first pushing strip to move, and the U-shaped push plate drives the second pushing strip to move through the L-shaped plate; the first sliding rod slides along the first guide rail to reset under the pulling of the first pushing strip and the second pushing strip, and the second sliding rod slides into the second guide rail section a after passing through the second guide rail arc section b from the second guide rail straight section b; due to the arc-shaped guide of the arc-shaped section of the first guide rail in the first guide rail and the arc-shaped section b of the second guide rail in the second guide rail, when the first sliding rod slides along the arc-shaped section of the first guide rail to reset, the first sliding rod can move up and down along the first pushing strip; when the second sliding rod slides along the arc section b of the second guide rail to reset, the second sliding rod moves downwards along the second pushing strip to the limit position and then moves upwards along the second pushing strip.

The fixed strip lies in with interval D matched with design: in the process that the first pushing strip and the second pushing strip respectively drive the first sliding rod and the second sliding rod to move, the distance D allows the fixing strip to penetrate through, and the first pushing strip and the second pushing strip can smoothly drive the first sliding rod and the second sliding rod to move. In addition, when the fixed strip is just positioned in the distance D and the second slide bar is positioned at the arc-shaped section a of the second guide rail, the second slide bar already slides onto the first pushing strip at the moment, and the second elastic roller on the second slide bar cannot interfere with the U-shaped cutting table, so that the second slide bar can smoothly slide in the second guide rail. When the fixed strip is just positioned in the distance D and the second slide bar is positioned at the arc section b of the second guide rail, the second slide bar is positioned on the second pushing strip, and the second elastic roller on the second slide bar cannot interfere with the U-shaped cutting table, so that the second slide bar can smoothly slide in the second guide rail.

The preservative film is matched with the first elastic roller and the second elastic roller; when the first elastic roller and the second elastic roller are in extrusion fit, the preservative film is extruded between the first elastic roller and the second elastic roller, so that the preservative film is always extruded between the first elastic roller and the second elastic roller and cannot be separated when the first elastic roller and the second elastic roller slide from the second guide rail straight section a to the second guide rail straight section b. When the first elastic roller and the second elastic roller slide from the second guide rail straight section b to the second guide rail straight section a, the first elastic roller and the second elastic roller are separated from extrusion fit, and then the preservative film cannot be extruded between the first elastic roller and the second elastic roller.

First elastic roller and second elastic roller all are with two elasticity baffle matched with effect be: when the first elastic roller and the second elastic roller move to the extreme position of the straight section b of the second guide rail, the first elastic roller and the second elastic roller are positioned at the outlet square hole of the square shell, and the first elastic roller and the second elastic roller prop the two elastic baffles open, so that the extruded preservative film between the first elastic roller and the second elastic roller can stretch out of the outlet square hole of the square shell, and a user can hold one end extending out of the outlet square hole of the square shell by hands. At this time, when the user pulls out the plastic wrap from the direction shell, the plastic wrap makes the first elastic roller rotate anticlockwise, and the plastic wrap makes the second elastic roller rotate clockwise. When the first elastic roller and the second elastic roller do not act on the two elastic baffles any more, the two elastic baffles reset to the original state under the elastic resetting of the elastic baffles. Two elastic baffle plates are installed in the outlet square hole in a symmetrical mode, and the design that one ends of the two elastic baffle plates opposite to each other are contacted is as follows: when two elastic baffle plates are not jacked open, the outlet square hole can be sealed by the mutual matching of the two elastic baffle plates, and external dust is prevented from entering from the outlet square hole.

The widths of the cutting chute and the pushing chute are as narrow as possible, so that external dust can be reduced to enter the square shell as far as possible, and the time that the preservative film is polluted due to the adhesion of a large amount of external dust is prolonged.

The design of the first unidirectional clutch ring and the second unidirectional clutch ring is as follows: when a user pulls out the preservative film from the direction shell, the first one-way clutch ring allows the first elastic roller to rotate anticlockwise, and does not allow the first elastic roller to rotate clockwise; the second one-way clutch ring allows the first elastic roller to rotate clockwise and does not allow the first elastic roller to rotate counterclockwise. The design that the first one-way clutch ring does not allow the first elastic roller to rotate clockwise and the second one-way clutch ring does not allow the first elastic roller to rotate anticlockwise can ensure that: when the first elastic roller and the second elastic roller move from the second guide rail straight section a to the second guide rail straight section b, the first elastic roller and the second elastic roller are continuously extruded and matched to extrude the preservative film between the first elastic roller and the second elastic roller, and the preservative film can be stretched; when the preservative film is stretched in the moving process of the first elastic roller and the second elastic roller, the preservative film barrel releases the preservative film through rotation, when the preservative film is stretched in the moving process of the first elastic roller and the second elastic roller, the first one-way clutch ring prevents the preservative film from driving the first elastic roller to rotate clockwise, and the second one-way clutch ring prevents the preservative film from driving the second elastic roller to rotate anticlockwise; finally, the preservative film can be smoothly pulled out of the square shell.

To U type push pedal, first promotion strip, second promote strip, ejector pad, guide block, first slide bar, second slide bar and the design of third spring lie in: firstly, when the push block moves towards the outlet square hole of the square shell under the action of external force, the push block drives the U-shaped push plate to move towards the outlet square hole of the square shell, the guide block and the T-shaped plate move along with the U-shaped push plate, and the third spring is stretched; the U-shaped push plate pushes the first push strip to move towards the direction of the square outlet hole of the square shell, the first push strip drives the first slide rod to move towards the direction of the square outlet hole of the square shell, and then the first slide rod slides along the first guide rail; the U-shaped push plate pushes the second pushing strip to move towards the direction of the square outlet hole of the square shell through the L-shaped plate, the second pushing strip drives the second sliding rod to move towards the direction of the square outlet hole of the square shell, and the second sliding rod slides along the arc-shaped section a of the second guide rail. And secondly, under the reset action of the third spring, the guide block drives the U-shaped push plate to move and reset, the push block, the T-shaped plate, the first push strip and the second push strip move and reset along the U-shaped push plate, the first push strip drives the first slide bar to move and reset along the first guide rail, and the second push strip drives the second slide bar to move and reset along the second guide rail arc section b of the second guide rail.

The blade and the U-shaped cutting table are designed in a matched mode: a user presses the pressing plate, the pressing plate drives the cutting plate to move downwards, and the first spring is compressed; after the cutting board is pushed down to the maximum, the blade on the cutting board is just right opposite to the U-shaped cutting table, so that a user drives the cutting board, the cutting sliding block and the blade to slide along the cutting sliding groove by pushing the pressing plate, and the blade enters the U-shaped cutting table to cut the preservative film. After the cutting slide block slides to the other end from one end of the cutting chute, the blade cuts the preservative film on the U-shaped cutting platform. When the user no longer presses the pressing plate, the pressing plate drives the cutting plate and the blade to move and reset under the reset action of the first spring.

The position requirements of the U-shaped push plate, the U-shaped plate and the second supporting plate are as follows: the U-shaped push plate and the U-shaped plate are the same in height, so that the T-shaped plate can be in extrusion fit with the limiting block. The distance between the end of the U-shaped plate and the corresponding second supporting plate is adjusted, so that the side plate of the U-shaped push plate can smoothly pass through.

For the actuator: when the blade does not cut the plastic wrap, the cutting slide block is positioned at one end of the cutting chute, and the shifting block on the cutting slide block is contacted with the corresponding shifted end on the U-shaped plate. The one end that the stopper has the inclined plane and the spacing end matched with design of T template lie in: when the U-shaped push plate drives the T-shaped plate to move towards the outlet square hole of the square shell, the limiting end of the T-shaped plate extrudes the inclined surface on the limiting block, the limiting block is extruded into the rectangular guide cylinder, and the second spring is compressed; after the spacing end of T template crossed the stopper, the spacing end of T template was located between two fixed plates, because the inclined plane on the stopper no longer received the extrusion this moment, so under the reset action of second spring, the one end that the stopper had the inclined plane stretched out rectangular guide tube once more, and the non-inclined plane that the stopper had inclined plane one end was spacing with the spacing end of T template like this, prevented that the spacing end of T template breaks away from between two fixed plates. When the cutting slider moved to the other end from the one end of cutting spout, the blade cut the plastic wrap, and at the in-process that the cutting slider removed, another on the U template was stirred to the shifting block on the cutting slider was dialled the end, and the shifting block drives the U template and removes to the direction of blade cutting plastic wrap, and the U template drives trapezoidal slider and slides in trapezoidal slide rail, and two fixed plates, rectangular guide cylinder, second spring, stopper follow the U template and remove. In the process that the limiting blocks move along with the U-shaped plates, two limiting ends of the T-shaped plates can be just positioned in the distance between the ends, with the inclined surfaces, of the two limiting blocks; the distance between the ends of the two limiting blocks with the inclined planes is S1, the distance between the two limiting ends of the T-shaped plate is S2, and S1 is larger than S2; the situation that the limiting end of the T-shaped plate is not limited by the corresponding limiting block any more can occur, the U-shaped push plate can utilize the reset force of the third spring at the moment, the U-shaped push plate pulls the T-shaped plate to be separated from the two fixing plates, and the two limiting blocks can not limit the T-shaped plate any more.

The design of the ladder-shaped sliding block and the ladder-shaped sliding rail is as follows: when the ladder-shaped slide block slides in the ladder-shaped slide rail, the ladder-shaped slide block cannot be separated from the ladder-shaped slide rail; the trapezoidal slider can be hung with the U template with being connected of U template.

For wind power mechanisms: when the U-shaped push plate pushes the second pushing strip to move towards the outlet square hole of the square shell through the L-shaped plate, the fixed block moves along with the second pushing strip, the fixed block pulls the steel wire rope to release the steel wire rope from the winding wheel, at the moment, the rotation of the winding wheel releasing the steel wire rope is set to be anticlockwise, and the volute spiral spring is compressed. For the effect of the third one-way clutch ring, when the winding wheel rotates anticlockwise, the winding wheel cannot drive the first rotating shaft to rotate through the third one-way clutch ring; when the winding wheel rotates clockwise, the winding wheel drives the first rotating shaft to rotate through the third one-way clutch ring. When the U-shaped push plate drives the second pushing strip to move and reset through the L-shaped plate, the fixed block moves and resets along with the second pushing strip, then under the reset force of the volute spiral spring, the winding wheel rotates clockwise to wind the steel wire rope, the winding wheel drives the first rotating shaft to rotate through the third one-way clutch ring, the first rotating shaft drives the second rotating shaft to rotate through the first bevel gear and the second bevel gear, the second rotating shaft drives the blowing fan to rotate, and the blowing fan blows air.

When the fresh-keeping film cylinder needs to be replaced, the cover plate is taken down, and then one end of the fresh-keeping film cylinder is taken down from the corresponding supporting rod in a left-right sliding mode, so that the other end of the fresh-keeping film cylinder can be smoothly taken down from the other supporting rod. One end of the fresh-keeping film cylinder is inserted into the corresponding support rod by the new fresh-keeping film cylinder, and then the other end of the fresh-keeping film cylinder is inserted into the other support rod in a left-right sliding mode; one end of the preservative film on the preservative film cylinder is pressed between the first elastic roller and the second elastic roller. The straight section b of the second guide rail is close to the square outlet hole of the square shell. The wind mechanism of the invention is positioned at the lower end of the preservative film.

When the push block is not pushed by a user, the second slide bar is positioned in the second guide rail straight section a of the second guide rail, and the first slide bar is positioned in the first guide rail straight section corresponding to the first guide rail; at the moment, the first elastic roller and the second elastic roller are in extrusion fit, and one end of the preservative film is extruded between the first elastic roller and the second elastic roller. One end of the limiting block with the inclined plane is not in extrusion fit with the limiting end of the T-shaped plate. The clamp plate is not pushed down, the blade does not cut the plastic wrap, the cutting slider is located the one end department of cutting spout, and the shifting block on the cutting slider contacts with the corresponding end of dialling on the U template this moment, and one of two stopper of U template department can produce the cooperation with the spacing end on the T template.

When the preservative film needs to be taken out of the square shell, a user pushes the push block to move towards the direction of the square outlet hole of the square shell along the push sliding groove, the push block drives the U-shaped push plate to move towards the direction of the square outlet hole of the square shell, the guide block and the T-shaped plate move along with the U-shaped push plate, and the third spring is stretched; the U-shaped push plate pushes the first push strip to move towards the direction of the square outlet hole of the square shell, the first push strip drives the first slide rod to move towards the direction of the square outlet hole of the square shell, and then the first slide rod slides along the first guide rail; the U-shaped push plate pushes the second push strip to move towards the outlet square hole of the square shell through the L-shaped plate, the second push strip drives the second slide rod to move towards the outlet square hole of the square shell, at the moment, the second slide rod moves towards the direction of the second guide rail straight section b from the second guide rail straight section a of the second guide rail, the second slide rod can touch the first arc-shaped elastic sheet, at the moment, the second slide rod extrudes the first arc-shaped elastic sheet, the first arc-shaped elastic sheet is extruded and bent, and under the guidance of the first arc-shaped elastic sheet, the second slide rod can not slide into the second guide rail arc-shaped section b but slide into the second guide rail arc-shaped section a; in the process that the second slide bar slides to the second guide rail straight section b along the second guide rail arc section a, the second elastic roller and the first elastic roller are in extrusion fit; the first elastic roller and the second elastic roller stretch the preservative film from the preservative film barrel through extrusion fit, and the preservative film barrel releases the preservative film through rotation. Due to the action of the first one-way clutch ring and the second one-way clutch ring, the preservative film cannot drive the first elastic roller to rotate clockwise, and the preservative film cannot drive the second elastic roller to rotate anticlockwise; finally, the preservative film can be smoothly pulled out of the square shell.

When the ejector pad moves to the direction of the square outlet hole of the square shell under the action of external force, the ejector pad drives the U-shaped ejector plate to move to the direction of the square outlet hole of the square shell, the guide block and the T-shaped plate move along with the U-shaped ejector plate, and the third spring is stretched. Under the pushing of the U-shaped push plate through the first pushing strip and the second pushing strip, when the first elastic roller on the first sliding rod and the second elastic roller on the second sliding rod are located at the square hole of the outlet of the square shell, the limiting end of the T-shaped plate extrudes the inclined plane on the corresponding limiting block, the limiting block is extruded into the rectangular guide cylinder, and the second spring is compressed. After the spacing end of T template crossed the stopper, the spacing end of T template was located between two fixed plates, because the inclined plane on the stopper no longer received the extrusion this moment, so under the reset action of second spring, the one end that the stopper had the inclined plane stretched out rectangular guide tube once more, and the non-inclined plane that the stopper had inclined plane one end was spacing with the spacing end of T template like this, prevented that the spacing end of T template breaks away from between two fixed plates. Therefore, when a user does not push the U-shaped push plate through the push block any more, the T-shaped plate on the U-shaped push plate is limited, and then the U-shaped push plate cannot automatically return to the original position, so that the first elastic roller on the first slide rod and the second elastic roller on the second slide rod are located at the outlet square hole of the square shell.

Under the push of the first push bar and the second push bar, the first slide bar slides along the first guide rail, and the second slide bar slides into the second guide rail straight section b after passing through the second guide rail arc section a from the second guide rail straight section a; due to the arc-shaped guide of the arc-shaped section of the first guide rail in the first guide rail and the arc-shaped section a of the second guide rail in the second guide rail, when the first sliding rod slides along the arc-shaped section of the first guide rail, the first sliding rod can move up and down along the first pushing strip; when the second sliding rod slides along the arc section a of the second guide rail, the second sliding rod moves upwards to the limit position along the second pushing strip and then moves downwards along the second pushing strip; in the process that the second sliding rod moves upwards, the second sliding rod slides into the first pushing strip from the second pushing strip through the distance D; the second sliding rod slides from the first pushing strip to the second pushing strip again through the distance D along with the guidance of the arc-shaped section a of the second guide rail. In the process that the first pushing strip and the second pushing strip respectively drive the first sliding rod and the second sliding rod to move, the distance D allows the fixing strip to penetrate through, and the first pushing strip and the second pushing strip can smoothly drive the first sliding rod and the second sliding rod to move.

When the first elastic roller and the second elastic roller move to the extreme position of the straight section b of the second guide rail, the first elastic roller and the second elastic roller are positioned at the outlet square hole of the square shell, and the first elastic roller and the second elastic roller prop the two elastic baffles open, so that the extruded preservative film between the first elastic roller and the second elastic roller can stretch out of the outlet square hole of the square shell, and a user can hold one end extending out of the outlet square hole of the square shell by hands. At this moment, when the user pulls out the plastic wrap from the direction shell, the plastic wrap makes the first elastic roller rotate anticlockwise and the plastic wrap makes the second elastic roller rotate clockwise due to the action of the first one-way clutch ring and the second one-way clutch ring. Just so can guarantee that the plastic wrap can not be pulled out by first elastic roller and the restriction of second elastic roller, and the plastic wrap can the user be prolonged continuously, and the plastic wrap section of thick bamboo can be driven the rotation by the plastic wrap and release winding plastic wrap.

After the preservative film is pulled out to the using length, a user presses the pressing plate downwards, the pressing plate drives the cutting plate to move downwards, and the first spring is compressed; after the cutting board is pushed down to the maximum, the blade on the cutting board is just right opposite to the U-shaped cutting table, so that a user drives the cutting board, the cutting sliding block and the blade to slide along the cutting sliding groove by pushing the pressing plate, and the blade enters the U-shaped cutting table to cut the preservative film. After the cutting slide block slides to the other end from one end of the cutting chute, the blade cuts the preservative film on the U-shaped cutting platform. The preservative film in the square shell is extruded and pressed by the first elastic roller and the second elastic roller, and is always in a tensioned state in the process of pulling out the preservative film; therefore, when the blade is used for cutting the preservative film, the blade can easily cut the preservative film in a tensioned state. After the plastic wrap cutting is finished, one end of the cut plastic wrap is attached to the edge of the U-shaped cutting table. When the cutting slide block moves from one end of the cutting chute to the other end, the blade cuts the preservative film; in the process that the cutting slider removes, the shifting block on the cutting slider breaks away from and is dialled the contact of end with the U template on corresponding, but after the plastic wrap had been cut to the blade, another on the U template was dialled the end by the shifting block on the cutting slider, and the shifting block drives the U template and removes to the direction of blade cutting plastic wrap, and the U template drives trapezoidal slider and slides in trapezoidal slide rail, and two fixed plates, rectangular guide cylinder, second spring, stopper follow the U template and remove. In the process that the limiting blocks move along with the U-shaped plates, two limiting ends of the T-shaped plates can be just positioned in the distance between the ends, with the inclined surfaces, of the two limiting blocks; the distance between the ends of the two limiting blocks with the inclined planes is S1, the distance between the two limiting ends of the T-shaped plate is S2, and S1 is larger than S2; the situation that the limiting end of the T-shaped plate is not limited by the corresponding limiting block any more can occur, the U-shaped push plate can utilize the reset force of the third spring at the moment, the U-shaped push plate pulls the T-shaped plate to be separated from the two fixing plates, and the two limiting blocks can not limit the T-shaped plate any more. Under the reset action of the third spring, the guide block drives the U-shaped push plate to move and reset, the push block, the T-shaped plate, the first push strip and the second push strip move and reset along the U-shaped push plate, the first push strip drives the first slide bar to move and reset along the first guide rail, and the second push strip drives the second slide bar to move and reset along the second guide rail arc section b of the second guide rail. When the first elastic roller and the second elastic roller do not act on the two elastic baffles any longer, the two elastic baffles reset to the original state under the elastic resetting of the elastic baffles.

When the second slide bar moves from the second guide rail straight section b of the second guide rail to the second guide rail straight section a, the second slide bar can touch the second arc-shaped elastic piece, the second slide bar extrudes the second arc-shaped elastic piece at the moment, the second arc-shaped elastic piece is extruded and bent, and under the guidance of the second arc-shaped elastic piece, the second slide bar can not slide into the second guide rail arc-shaped section a but slide into the second guide rail arc-shaped section b; the second sliding rod slides to the second guide rail straight section a along the second guide rail arc section b, at the moment, the second elastic roller is separated from the first elastic roller in extrusion fit, and a space exists between the second elastic roller and the first elastic roller. When the first elastic roller and the second elastic roller slide and reset from the second guide rail straight section b to the second guide rail straight section a direction through the second guide rail arc section b, the first elastic roller and the second elastic roller are separated from extrusion fit, and then the preservative film can not be extruded between the first elastic roller and the second elastic roller.

When the U-shaped push plate moves in a reset mode towards the direction far away from the square hole of the outlet of the square shell, the U-shaped push plate drives the first pushing strip to move, and the U-shaped push plate drives the second pushing strip to move through the L-shaped plate; the first sliding rod slides along the first guide rail to reset under the pulling of the first pushing strip and the second pushing strip, and the second sliding rod slides into the second guide rail section a after passing through the second guide rail arc section b from the second guide rail straight section b; due to the arc-shaped guide of the arc-shaped section of the first guide rail in the first guide rail and the arc-shaped section b of the second guide rail in the second guide rail, when the first sliding rod slides along the arc-shaped section of the first guide rail to reset, the first sliding rod can move up and down along the first pushing strip; when the second sliding rod slides along the arc section b of the second guide rail to reset, the second sliding rod moves downwards along the second pushing strip to the limit position and then moves upwards along the second pushing strip. In the process that the first pushing strip and the second pushing strip respectively drive the first sliding rod and the second sliding rod to move and reset, the distance D allows the fixing strip to penetrate through, and the first pushing strip and the second pushing strip can smoothly drive the first sliding rod and the second sliding rod to move and reset.

When the first elastic roller and the second elastic roller move to return to the original positions, the second slide bar is positioned in the second guide rail straight section a of the second guide rail, and the first slide bar is positioned in the corresponding first guide rail straight section of the first guide rail; at the moment, the first elastic roller and the second elastic roller are in extrusion fit again, and the preservative film is extruded between the first elastic roller and the second elastic roller again.

When the wrap needs to be pulled out again, the user can repeat the above process again.

Compared with the preservative film cutter popular in the market, the cutter disclosed by the invention can realize that the preservative film can be taken out of the cutter without frequently opening the cover of the preservative film cutter, so that the convenience for frequently taking the preservative film by a user is greatly increased. In addition, compared with the preservative film cutter which does not need to open the cover on the market, the preservative film cutting process in the cutter is completed in the square shell, after the preservative film is cut, a section of preservative film pulled out of the preservative film cylinder is kept in the square shell, and the dust flowing in the outside air is difficult to adsorb the section of preservative film pulled out of the preservative film cylinder in the square shell under the shielding effect of the square shell, the bottom plate, the cover and the elastic baffle, so that the probability of pollution of the section of preservative film pulled out of the preservative film cylinder by a plurality of dust is reduced, and the clean time of the section of preservative film pulled out of the preservative film cylinder is prolonged. The cutter is conveniently applied to family life, particularly after food is wrapped in the family life, the preservative film can be retained for a long time and can be reused, and in the retained time, a section of preservative film pulled out of the preservative film cylinder is not easily polluted by dust, so that the safety of the food packaged next time is ensured.

When the U-shaped push plate pushes the second pushing strip to move towards the outlet square hole of the square shell through the L-shaped plate, the fixed block moves along with the second pushing strip, the fixed block pulls the steel wire rope to release the steel wire rope from the winding wheel, at the moment, the rotation of the winding wheel releasing the steel wire rope is set to be anticlockwise, and the volute spiral spring is compressed. Under the action of the third one-way clutch ring, the winding wheel cannot drive the first rotating shaft to rotate through the third one-way clutch ring, and then the blowing fan cannot input power.

After the blade cuts the preservative film, one end of the cut preservative film is attached to the edge of the U-shaped cutting table. Under certain conditions, one end of the cut preservative film is not attached to the edge of the U-shaped cutting table and falls on the bottom plate; or, move the in-process of living the plastic wrap again after reseing at first elastic roller and second elastic roller, the quick travel of first elastic roller and second elastic roller resets and can make the U type cut near the platform and cause the air current, the air current probably makes the plastic wrap that attaches to the edge that the platform was cut to the U type no longer attach to the U type and cut the platform, the plastic wrap is cut the platform from the U type and is floated on the bottom plate, influence first elastic roller and second elastic roller to remove to reset the back on the contrary and be difficult to extrude the plastic wrap. To avoid this, the wind turbine is switched on. Make first elastic drum remove at first promotion strip and reset, the second promotes the strip and makes the second elastic drum remove the in-process that resets, and the fixed block follows the second and promotes the strip and remove and reset, so under volute spiral spring's restoring force, the winding wheel clockwise rotation twines wire rope, and the winding wheel drives first pivot rotation through the one-way clutch ring of third, and first pivot drives the second pivot rotation through first bevel gear, second bevel gear, and the second pivot drives the fan of blowing rotation, and the fan of blowing blows. The function of fan of blowing makes the U type cut a lower extreme and has the air current that lasts, if the absorption breaks away from the absorption back in the plastic wrap one end that the U type cut a edge appearing, air flow blowing fan blows, the plastic wrap can not waft on the bottom plate, the one end of plastic wrap can be driven by the air current and continuously wafts in U type cut a department, just so can guarantee that first elastic roller and second elastic roller move and can extrude the plastic wrap completely after reseing, finally guaranteed that plastic wrap can first elastic roller and second elastic roller continuously follow square shell and pull out the use.

Compared with the traditional cutting technology, the push block pushes the U-shaped push plate under the pushing of an external force, so that the first push strip pushes the first slide bar, and the second push strip pushes the second slide bar; and then the preservative film is stretched out of the square shell into the square outlet hole of the square shell by the first elastic roller and the second elastic roller through extrusion fit, so that a user can take out the preservative film from the cutter conveniently, and the trouble that the cover of the preservative film cutter needs to be opened frequently to take the preservative film by a traditional preservative film cutter is avoided. After the cutter is used for cutting, the first elastic roller and the second elastic roller can automatically move and reset to press the preservative film again so as to be used repeatedly next time, and the convenience of operation is greatly improved. In addition, the cutter can prevent the preservative film in the cutter from being polluted by dust to a certain extent, prolong the clean time of the preservative film in the cutter and ensure the safety of food packaged next time. The design of the wind power mechanism in the cutter can completely ensure that the preservative film can be completely extruded after the first elastic roller and the second elastic roller move and reset, and the condition that one end of the cut preservative film can not be extruded again by the first elastic roller and the second elastic roller after falling off from the U-shaped cutting table is avoided. The invention has simple structure and better use effect.

Drawings

Fig. 1 is an overall schematic view of the cutter.

Fig. 2 is an overall sectional view of the cutter.

FIG. 3 is a schematic view of the cutter with the cover removed.

Fig. 4 is a schematic sectional view of a square-shaped shell.

Fig. 5 is a schematic view of the structure mounted on the base plate.

Fig. 6 is a schematic cross-sectional view of fig. 5.

Fig. 7 is a schematic sectional front view of fig. 5.

Fig. 8 is a schematic view of actuator installation.

Fig. 9 is a schematic sectional view of the actuator mounting.

Fig. 10 is a schematic view of the installation of the ladder slide rail.

Fig. 11 is a schematic sectional view of the installation of the ladder type slider.

Fig. 12 is a schematic view of the matching of the shifting block and the U-shaped plate.

Fig. 13 is a cut-away board installation cross-sectional view.

Fig. 14 is a schematic cross-sectional view of a cutting block.

Fig. 15 is a schematic sectional view of the installation of the stopper.

Fig. 16 is a schematic view of a strip rail installation.

Fig. 17 is a schematic view of a preservative film cartridge installation.

Fig. 18 is a schematic view of the installation of the U-shaped cutting table.

Fig. 19 is a schematic view of the installation of the first and second rails.

Fig. 20 is a schematic front view of a first slide cooperating with a first guide rail and a second slide cooperating with a second guide rail.

Fig. 21 is a schematic view of the T-plate and L-plate installation.

FIG. 22 is a schematic view of a fixation bar mated with a spacing between a first push bar and a second push bar.

FIG. 23 is a schematic illustration of the spacing between a first pusher bar and a second pusher bar.

FIG. 24 is a schematic sectional view of the first one-way clutch ring and the second one-way clutch ring installed.

Fig. 25 is a schematic sectional top view of the T-shaped plate and the stop block.

Fig. 26 is a schematic cross-sectional elevation view of the blade on the cutting board in cooperation with the U-shaped cutting table.

FIG. 27 is a schematic view of two wind turbine installation locations.

Fig. 28 is a schematic view of the mounting block.

Fig. 29 is a schematic of wireline installation.

FIG. 30 is a schematic view of a wrap spring installation.

FIG. 31 is a first bevel gear mounting schematic.

Fig. 32 is a blowing fan mounting diagram.

Number designation in the figures: 1. a base plate; 2. a square shell; 3. a cover plate; 4. an elastic baffle plate; 5. cutting the chute; 6. pushing the chute; 7. an actuator; 8. a push block; 9. a wind power mechanism; 10. a first support plate; 12. a second support plate; 13. a strip-shaped guide rail; 14. an outlet square hole; 15. a fresh-keeping film cylinder; 16. a preservative film; 17. a first guide rail; 18. a second guide rail; 19. a U-shaped push plate; 20. a first push bar; 21. a first elastic roller; 22. a second elastic roller; 23. a fixing strip; 24. a U-shaped cutting table; 25. a first unidirectional clutch ring; 26. a second unidirectional clutch ring; 28. a ladder-shaped slide rail; 29. cutting the sliding block; 30. a U-shaped plate; 31. a fixing plate; 32. a rectangular guide cylinder; 33. pressing a plate; 34. cutting the board; 35. a first spring; 36. a limiting block; 37. a trapezoidal slider; 38. shifting blocks; 39. a dialed end; 40. a strip plate; 41. a card slot; 42. a blade; 43. a sliding through groove; 44. a bevel; 45. a second spring; 48. a support bar; 49. a first slide bar; 50. a second slide bar; 51. a first guide rail arc segment; 53. a first guide rail straight section; 54. a second guide rail straight section a; 55. a second guide rail straight section b; 56. a second guide rail arc section b; 57. a second guide rail arc section a; 58. a second arc-shaped elastic sheet; 59. a first arc-shaped elastic sheet; 60. a side plate; 61. a T-shaped plate; 62. a limiting end; 63. a guide block; 64. a third spring; 65. a first through hole; 66. a second through hole; 68. a first bevel gear; 69. a wire rope; 70. a third unidirectional clutch ring; 71. a winding wheel; 72. a volute spiral spring; 73. a third support plate; 74. a first connection block; 75. a second connecting block; 76. a first rotating shaft; 77. a second bevel gear; 78. a second rotating shaft; 79. a fourth support plate; 80. a blowing fan; 81. an L-shaped plate; 82. a second push bar; 83. and (5) fixing blocks.

Detailed Description

As shown in fig. 1, 4, 7, and 20, it includes a bottom plate 1, a square shell 2, a cover plate 3, an elastic baffle 4, a cutting chute 5, a pushing chute 6, an actuator 7, a push block 8, a wind mechanism 9, a first support plate 10, a second support plate 12, a strip-shaped guide rail 13, an outlet square hole 14, a first guide rail 17, a second guide rail 18, a U-shaped push plate 19, a first push bar 20, a second push bar 82, an L-shaped plate 81, a first elastic roller 21, a second elastic roller 22, a fixing bar 23, a U-shaped cutting table 24, a first one-way clutch ring 25, a second one-way clutch ring 26, a support bar 48, a first slide bar 49, a second slide bar 50, a first arc-shaped elastic sheet 59, a second arc-shaped elastic sheet 58, a T-shaped plate 61, a guide block 63, a third spring 64, a first through hole 65, and a second through hole 66, as shown in fig. 1 and 3, wherein the square shell 2 is installed on the; as shown in fig. 1 and 2, a cover plate 3 is mounted on one end of the square shell 2 far away from the bottom plate 1; as shown in fig. 4, an outlet square hole 14 is formed in the middle of the side shell surface of the square shell 2; as shown in fig. 1 and 4, two elastic baffles 4 are symmetrically arranged in the outlet square hole 14, and one ends of the two elastic baffles 4 opposite to each other are in contact; as shown in fig. 1 and 8, the cover plate 3 is provided with a through cutting chute 5 and a pushing chute 6; as shown in fig. 8 and 9, the actuator 7 is mounted on the cover plate 3; as shown in fig. 5 and 16, two first supporting plates 10 are symmetrically mounted on the upper surface of one end of the bottom plate 1 away from the outlet square hole 14 of the square shell 2; the two support rods 48 are symmetrically installed on the two first support plates 10, and the two support rods 48 are located between the two first support plates 10; two second supporting plates 12 are symmetrically arranged on the upper surface of one end of the bottom plate 1 close to the outlet square hole 14 of the square shell 2; two strip-shaped guide rails 13 are respectively installed on one ends of the two second support plates 12 far away from the bottom plate 1.

As shown in fig. 17 and 19, the structures mounted on the side surfaces of the two second support plates 12 opposite to each other are the same, and for the side surface of any one of the second support plates 12: the first and second guide rails 17 and 18 are installed on the side surfaces of the second support plate 12, and the first guide rail 17 is located at the upper end of the second guide rail 18; as shown in fig. 20, the first guide rail 17 is composed of a first guide rail arc-shaped section 51 and two first guide rail straight sections 52, and both ends of the first guide rail arc-shaped section 51 are respectively connected with the two first guide rail straight sections 52; the second guide rail 18 is composed of a second guide rail arc-shaped section a57, a second guide rail arc-shaped section b56, a second guide rail straight section a54 and a second guide rail straight section b 55; the radian of the second guide rail arc-shaped section a57 is the same as that of the second guide rail arc-shaped section b56, and the second guide rail arc-shaped section a57 and the second guide rail arc-shaped section b56 are distributed in an up-down symmetrical mode; the second rail arc a57 is located above the second rail arc b 56; two ends of the second guide rail arc-shaped section a57 are respectively connected with two ends of the second guide rail arc-shaped section b 56; the joint of the second guide rail arc-shaped section a57 and one end of the second guide rail arc-shaped section b56 is connected with a second guide rail straight section a54, and the joint of the other end of the second guide rail arc-shaped section a 3578 is connected with a second guide rail straight section b 55; as shown in fig. 19 and 20, a second arc-shaped elastic piece 58 is installed on the inner top surface of the guide rail where the second guide rail arc-shaped section a57 is connected with the second guide rail straight section b55, and one end of the second arc-shaped elastic piece 58, which is far away from the second guide rail straight section b55, is connected with the inner top surface of the second guide rail arc-shaped section a57, and the other end is not connected with the inner top surface of the second guide rail straight section b 55; the first arc-shaped elastic piece 59 is installed on the inner bottom surface of the guide rail at the connecting position of the second guide rail arc-shaped section b56 and the second guide rail straight section a54, one end, far away from the second guide rail straight section a54, of the first arc-shaped elastic piece 59 is connected with the inner bottom surface of the guide rail of the second guide rail arc-shaped section b56, and the other end of the first arc-shaped elastic piece 59 is not connected with the inner bottom surface of the guide rail of the second guide rail straight section a 54.

As shown in fig. 19 and 20, the two ends of the first sliding rod 49 are respectively installed in the two first guide rails 17 in a sliding fit manner; two ends of the second sliding bar 50 are respectively installed in the two second guide rails 18 in a sliding fit manner; as shown in fig. 24, two first through holes 65 are symmetrically formed on the first sliding rod 49; the two first unidirectional clutch rings 25 are symmetrically installed on the outer circular surface of the first sliding rod 49, and the two first unidirectional clutch rings 25 are located between the two first through holes 65; two ends of the first elastic roller 21 are respectively arranged on the outer circular surfaces of the two first one-way clutch rings 25; as shown in fig. 24, two second through holes 66 are symmetrically formed on the second slide bar 50; two second unidirectional engaging rings 26 are symmetrically installed on the outer circumferential surface of the second slide bar 50, and the two second unidirectional engaging rings 26 are located between the two second through holes 66; two ends of the second elastic roller 22 are respectively installed on the outer circular surfaces of the two second one-way clutch rings 26; the first elastic roller 21 cooperates with the second elastic roller 22; as shown in fig. 20, the second slide bar 50 is engaged with a first arc-shaped elastic piece 59 and a second arc-shaped elastic piece 58, respectively.

As shown in fig. 21, the U-shaped push plate 19 is composed of a strip-shaped plate 40 and two side plates 60; one end of the push block 8 is arranged on the upper surface of the middle position of the strip-shaped plate 40 of the U-shaped push plate 19, as shown in figure 1, and the other end passes through the push chute 6 of the cover plate 3; the push block 8 slides in the push chute 6; as shown in fig. 21, one end of the T-shaped plate 61 is mounted on the side surface of the middle position of the strip-shaped plate 40 of the U-shaped push plate 19; the T-shaped plate 61 is positioned between the two side plates 60 of the U-shaped push plate 19; the T-shaped plate 61 is provided with two limiting ends 62, and the two limiting ends 62 are far away from the strip-shaped plate 40 of the U-shaped push plate 19; as shown in fig. 25, two limiting ends 62 of the T-shaped plate 61 are matched with the actuating mechanism 7; as shown in fig. 21, two side plates 60 of the U-shaped push plate 19 are each provided with a guide block 63, and the two guide blocks 63 are symmetrical; as shown in fig. 21, 16 and 25, the two guide blocks 63 are installed in the two bar-shaped guide rails 13 by means of sliding fit; one end of each of the two third springs 64 is mounted on each of the two guide blocks 63, and the other end is mounted on the inner side of each of the two bar-shaped guide rails 13; the two third springs 64 are respectively positioned in the two strip-shaped guide rails 13; as shown in fig. 21 and 22, a first push bar 20 is mounted at one end of each of two side plates 60 of the U-shaped push plate 19; as shown in fig. 22 and 23, the first push bar 20, the first slide bar 49 and the second slide bar 50 are located on the same side, and the first push bar 20 passes through the corresponding first through hole 65 of the first slide bar 49; the first push bar 20 is matched with the corresponding second through hole 66 of the second slide bar 50; as shown in fig. 21 and 22, one end of each of the two L-shaped plates 81 is mounted on one end of the two side plates 60 of the U-shaped push plate 19 away from the corresponding first push bar 20, and the other end is mounted with a second push bar 82; as shown in fig. 22 and 23, the second push bar 82, the first slide bar 49 and the second slide bar 50 are on the same side, and the second push bar 82 passes through the corresponding second through hole 66 of the second slide bar 50; as shown in fig. 23, the first push bar 20 and the second push bar 82 on the same side: one end of the first push bar 20 penetrating through the first slide bar 49 is opposite to one end of the second push bar 82 penetrating through the second slide bar 50, a distance exists between one end of the first push bar 20 penetrating through the first slide bar 49 and one end of the second push bar 82 penetrating through the second slide bar 50, the distance is named as a distance D, and the distance D is smaller than the hole length of the second through hole 66 in the second slide bar 50.

As shown in fig. 18, the U-shaped cutting table 24 is mounted on the two second support plates 12 by two fixing bars 23, respectively; as shown in fig. 17, the fixing bar 23 is located between the second rail arc section a57 and the second rail arc section b56 of the corresponding second rail 18; as shown in fig. 26, the actuator 7 is engaged with the U-shaped cutting table 24.

As shown in fig. 22, the fixing bar 23, the first push bar 20, and the second push bar 82 on the same side: the fixing strip 23 is fitted with the distance D.

As shown in fig. 6, 7 and 27, two wind mechanisms 9 are symmetrically installed on the bottom plate 1, and the wind mechanisms 9 are located between the first support plate 10 and the second support plate 12; as shown in fig. 28, the two wind mechanisms 9 are respectively engaged with the two second push bars 82.

As shown in fig. 10, 12, 13, and 15, the actuator 7 includes a ladder-shaped slide rail 28, a cutting slide block 29, a U-shaped plate 30, a fixing plate 31, a rectangular guide cylinder 32, a pressing plate 33, a cutting plate 34, a first spring 35, a limiting block 36, a ladder-shaped slide block 37, a shifting block 38, a shifted end 39, a strip-shaped plate 40, a slot 41, a blade 42, a sliding through slot 43, an inclined surface 44, and a second spring 45, as shown in fig. 14, wherein a through sliding through slot 43 is opened in the cutting slide block 29; two clamping grooves 41 are symmetrically formed in two sides of the cutting sliding block 29; as shown in fig. 9 and 10, the cutting slider 29 is mounted in the cutting chute 5 by means of a sliding fit; as shown in fig. 13, the cutting plate 34 is installed in the sliding through slot 43 of the cutting slider 29 in a sliding fit manner, and both ends of the cutting plate 34 penetrate through the cutting slider 29; one end of the cutting plate 34 is provided with a blade 42, and the other end is provided with a pressing plate 33; the pressing plate 33 is positioned on the cover plate 3; as shown in fig. 9 and 26, the first spring 35 is nested on the cutting plate 34, and one end of the first spring 35 is mounted on the pressing plate 33, and the other end is mounted on the cutting slider 29; as shown in fig. 12, a shifting block 38 is mounted on the side surface of the cutting slider 29; as shown in fig. 10, the ladder slide rail 28 is mounted on the lower surface of the cover plate 3, and the ladder slide rail 28 is adjacent to the cutting chute 5; as shown in fig. 9 and 11, the ladder-type slide block 37 is installed in the ladder-type slide rail 28 by means of sliding fit; one end of the trapezoidal sliding block 37 penetrating through the trapezoidal sliding rail 28 is provided with a U-shaped plate 30; as shown in fig. 12, the U-shaped plate 30 is composed of a strip-shaped plate 40 and two shifted ends 39; the shifting block 38 is matched with two shifted ends 39; the two rectangular guide cylinders 32 are both arranged on a strip-shaped plate 40 of the U-shaped plate 30 through a fixing plate 31, and the two rectangular guide cylinders 32 are far away from the end 39 to be poked of the U-shaped plate 30; as shown in fig. 12 and 15, the two limit blocks 36 are respectively installed in the two rectangular guide cylinders 32 in a sliding fit manner; one end of each of the two second springs 45 is mounted on each of the two limiting blocks 36, and the other end is mounted on the bottom cylindrical surface of each of the two rectangular guide cylinders 32; two second springs 45 are respectively positioned in the two rectangular guide cylinders 32; the end of each stop 36 remote from the respective second spring 45 has a ramp 44.

As shown in fig. 29, 30 and 32, the wind mechanism 9 includes a first bevel gear 68, a wire rope 69, a third one-way clutch ring 70, a winding wheel 71, a spiral spring 72, a third support plate 73, a first connecting block 74, a second connecting block 75, a first rotating shaft 76, a second bevel gear 77, a second rotating shaft 78, a fourth support plate 79, a blowing fan 80 and a fixing block 83, as shown in fig. 6, 7 and 27, wherein the third support plate 73 and the fourth support plate 79 are mounted on the base plate 1; as shown in fig. 30 and 31, the first rotating shaft 76 is mounted in a circular hole of the third support plate 73 by a bearing, and both ends of the first rotating shaft 76 pass through the third support plate 73; a third one-way clutch ring 70 is mounted on the outer circular surface of one end of the first rotating shaft 76, and a first bevel gear 68 is mounted at the other end; the winding wheel 71 is installed on the outer circumferential surface of the third unidirectional clutch ring 70; the scroll spring 72 is nested on the first rotating shaft 76, and one end of the scroll spring 72 is mounted on the side of the winding wheel 71 through a first connecting block 74, and the other end is mounted on the third supporting plate 73 through a second connecting block 75; the spiral spring 72 is located between the winding wheel 71 and the third support plate 73; as shown in fig. 32, the second rotating shaft 78 is mounted in a circular hole of a fourth support plate 79 through a bearing, and both ends of the second rotating shaft 78 pass through the fourth support plate 79; one end of the second rotating shaft 78 is provided with a blowing fan 80, and the other end is provided with a second bevel gear 77; the first bevel gear 68 and the second bevel gear 77 are engaged; as shown in fig. 28, the fixing block 83 is installed on one end side of the second push bar 82 connected to the corresponding L-shaped plate 81; as shown in fig. 28 and 29, one end of the wire rope 69 is wound around the winding wheel 71, and the other end is mounted on the fixed block 83.

As shown in fig. 25, one end of the stopper 36 having the inclined surface 44 is engaged with the stopper end 62 of the T-shaped plate 61; when the second spring 45 is not compressed, the distance between the ends of the two stoppers 36 having the inclined surfaces 44 is S1; the distance between the two limiting ends 62 of the T-shaped plate 61 is S2; s1 is greater than S2.

As shown in fig. 26, the blade 42 engages the U-shaped cutting table 24.

The first elastic roller 21 and the second elastic roller 22 are both engaged with the two elastic baffles 4.

As shown in fig. 20, the arc of the first rail arc-shaped section 51 of the first rail 17 is concentric with the arc of the second rail arc-shaped section a57 of the second rail 18.

The elastic baffle 4 is made of plastic.

The inner wall surfaces of the first guide rail 17 and the second guide rail 18 are coated with lubricating oil. This facilitates smooth sliding of the first slide bar 49 in the first guide rail 17 and smooth sliding of the second slide bar 50 in the second guide rail 18.

The first arc-shaped elastic piece 59 and the second arc-shaped elastic piece 58 are made of elastic steel plates.

The first elastic roller 21 and the second elastic roller 22 are made of rubber.

The third spring 64 is an extension spring; when the third spring 64 is not extended, as shown in fig. 20, the second slide bar 50 is located in the second straight section a54 of the second guide rail 18 and the first slide bar 49 is located in the corresponding first straight section 52 of the first guide rail 17; at this time, the first elastic roller 21 and the second elastic roller 22 are in press fit, as shown in fig. 25, one end of the limiting block 36 having the inclined surface 44 is not in press fit with the limiting end 62 of the T-shaped plate 61.

The first spring 35 is a compression spring; when the first spring 35 is uncompressed, the blade 42 on the cutting plate 34 is positioned above the first rail 17. This is designed so that the first resilient roller 21 does not interfere with the blade 42 when the first resilient roller 21 slides around the first guide rail 17.

As shown in fig. 15, the second spring 45 is a compression spring; when the second spring 45 is not compressed, the end of the stop 36 having the inclined surface 44 extends out of the corresponding rectangular guide cylinder 32.

As shown in fig. 5 and 17, it further comprises a preservative film cartridge 15 and a preservative film 16, as shown in fig. 17, wherein the preservative film cartridge 15 is provided with the preservative film 16 wound thereon; the two ends of the fresh-keeping film cylinder 15 are arranged on the two support rods 48 in a rotating fit manner; as shown in fig. 6 and 7, the plastic wrap 16 is matched with the first elastic roller 21 and the second elastic roller 22; the preservative film 16 is matched with the blade 42; the plastic wrap 16 is engaged with the U-shaped cutting table 24.

As shown in fig. 7, the first elastic roller 21 cooperates with the second elastic roller 22; as shown in fig. 20, the second slide bar 50 cooperates with the first arc-shaped elastic piece 59 and the second arc-shaped elastic piece 58 respectively: first, when the second slide bar 50 is located in the second straight section a54 of the second guide rail 18, the first slide bar 49 is located in the corresponding first straight section 52 of the first guide rail 17; the first elastic roller 21 and the second elastic roller 22 are in extrusion fit; since the arc of the first track arc 51 of the first track 17 is concentric with the arc of the second track arc a57 of the second track 18, the press fit between the first resilient roller 21 and the second resilient roller 22 needs to be maintained continuously as the first slider bar 49 slides along the first track arc 51 of the first track 17 and the second slider bar 50 slides along the second track arc a57 of the second track 18. Secondly, when the second slide bar 50 is located in the second straight section b55 of the second guide rail 18, the first slide bar 49 is located in the corresponding first straight section 52 of the first guide rail 17; the first resilient roller 21 and the second resilient roller 22 are still in press fit. Third, when the second slide bar 50 is slid from the second guide rail arc section a57 of the second guide rail 18 to the second guide rail straight section b55 of the second guide rail 18, the second slide bar 50 presses the second arc-shaped elastic piece 58, and the second arc-shaped elastic piece 58 is substantially flattened; this is why it is required that one end of the second arc-shaped elastic piece 58 is not connected to the rail inner top surface of the second rail straight section b 55; when the second slide bar 50 enters the second straight section b55 of the second guide rail 18, the second arc-shaped elastic piece 58 is restored to the natural state under the reset condition. Fourthly, when the second slide bar 50 moves from the second straight guide rail section b55 of the second guide rail 18 to the second straight guide rail section a54, the second slide bar 50 touches the second arc-shaped elastic piece 58, at this time, the second slide bar 50 presses the second arc-shaped elastic piece 58, the second arc-shaped elastic piece 58 is pressed and bent, and under the guidance of the second arc-shaped elastic piece 58, the second slide bar 50 does not slide into the second guide rail section a57, but slides into the second guide rail section b 56; the second slide bar 50 slides along the second guide arc section b56 to the second guide straight section a54, at this time, the second elastic roller 22 is separated from the first elastic roller 21, and there is a gap between the second elastic roller 22 and the first elastic roller 21. Fifthly, when the second slide bar 50 is transitionally slid from the second guide rail arc-shaped section b56 of the second guide rail 18 to the second guide rail straight section a54 of the second guide rail 18, the second slide bar 50 presses the first arc-shaped elastic piece 59, and the first arc-shaped elastic piece 59 is substantially flattened; this is why it is required that one end of the first arc-shaped elastic piece 59 is not connected to the rail inner bottom surface of the second rail straight section a 54; when the second slide bar 50 enters the second straight section a54 of the second guide rail 18, the second arc-shaped elastic piece 58 is restored to the natural state under the reset. Sixth, when the second slide bar 50 moves from the second straight guide rail section a54 of the second guide rail 18 to the second straight guide rail section b55, the second slide bar 50 touches the first arc-shaped elastic piece 59, and the second slide bar 50 presses the first arc-shaped elastic piece 59, so that the first arc-shaped elastic piece 59 is pressed and bent, and under the guidance of the first arc-shaped elastic piece 59, the second slide bar 50 does not slide into the second curved guide rail section b56, but slides into the second curved guide rail section a 57; during the sliding of the second slide bar 50 along the second guide rail arc section a57 to the second guide rail straight section b55, the second resilient roller 22 maintains the pressing fit with the first resilient roller 21.

The pushing force of the first slide bar 49 is provided by a first pushing bar 20 and the pushing force of the second slide bar 50 is provided by a second pushing bar 82 when the 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 push bar 20 is matched with the corresponding second through hole 66 of the second slide bar 50, a distance exists between one end of the first push bar 20 passing through the first slide bar 49 and one end of the second push bar 82 passing through the second slide bar 50, and is named as a distance D, and the distance D is smaller than the hole length of the second through hole 66 in the second slide bar 50: firstly, when the U-shaped push plate 19 pushes towards the outlet square hole 14 of the square shell 2, the U-shaped push plate 19 drives the first push strip 20 to move, and the U-shaped push plate 19 drives the second push strip 82 to move through the L-shaped plate 81; then under the push of the first push bar 20 and the second push bar 82, the first slide bar 49 slides along the first guide rail 17, and the second slide bar 50 slides into the second guide rail straight section b55 after passing through the second guide rail arc section a57 from the second guide rail straight section a 54; due to the arc-shaped guidance of the first guide track arc-shaped section 51 in the first guide track 17 and the second guide track arc-shaped section a57 in the second guide track 18, the first slide bar 49 will move up and down along the first push bar 20 when the first slide bar 49 slides along the first guide track arc-shaped section 51; when the second slide bar 50 slides along the second guide rail arc section a57, the second slide bar 50 will move upward to the limit position along the second push bar 82, and then move downward again along the second push bar 82; during the upward movement of the second slide bar 50, the second slide bar 50 slides from the second push bar 82 to the first push bar 20 through the distance D; the second slider bar 50 slides from the first pusher bar 20 through the distance D and onto the second pusher bar 82 again as guided by the second guide track arcuate segment a 57. The distance D is smaller than the hole length of the second through hole 66 in the second slide bar 50, which is designed to ensure that: the second slide bar 50 does not disengage from the spacing D as the second slide bar 50 slides between the first pusher bar 20 and the second pusher bar 82. Secondly, when the U-shaped push plate 19 moves to the direction away from the outlet square hole 14 of the square shell 2, the U-shaped push plate 19 drives the first push strip 20 to move, and the U-shaped push plate 19 drives the second push strip 82 to move through the L-shaped plate 81; then the first sliding bar 49 slides along the first guiding rail 17 to return under the pulling of the first pushing bar 20 and the second pushing bar 82, and the second sliding bar 50 slides into the second guiding rail 18 segment a after passing through the second guiding rail arc segment b56 from the second guiding rail straight segment b 55; due to the arc-shaped guidance of the first guide track arc-shaped section 51 of the first guide track 17 and the second guide track arc-shaped section b56 of the second guide track 18, the first sliding bar 49 will move up and down along the first push bar 20 when the first sliding bar 49 is slidably reset along the first guide track arc-shaped section 51; after the second slide bar 50 is slid along the second guide rail arc section b56 to return, the second slide bar 50 will move downwards along the second push bar 82 to the limit position, and then move upwards again along the second push bar 82.

As shown in fig. 22 and 23, the fixing strip 23 is designed to match with the distance D: the distance D allows the fixing strip 23 to pass through during the process of the first pushing strip 20 and the second pushing strip 82 respectively driving the first sliding rod 49 and the second sliding rod 50 to move, so as to ensure that the first pushing strip 20 and the second pushing strip 82 can smoothly drive the first sliding rod 49 and the second sliding rod 50 to move. In addition, when the fixed bar 23 is located at the distance D and the second slide bar 50 is located at the second guide rail arc section a57, the second slide bar 50 has already slid onto the first push bar 20, and the second elastic roller 22 on the second slide bar 50 will not interfere with the U-shaped cutting table 24, so as to ensure that the second slide bar 50 can slide in the second guide rail 18 smoothly. When the fixed bar 23 is located at the distance D and the second slide bar 50 is located at the second guide rail arc section b56, the second slide bar 50 is located on the second pushing bar 82, and the second elastic roller 22 on the second slide bar 50 does not interfere with the U-shaped cutting table 24, so that the second slide bar 50 can slide in the second guide rail 18 smoothly.

As shown in FIG. 7, the plastic wrap 16 is engaged with the first elastic roller 21 and the second elastic roller 22; when the first elastic roller 21 and the second elastic roller 22 are pressed and fitted, the plastic wrap 16 is pressed between the first elastic roller 21 and the second elastic roller 22, so that the plastic wrap 16 is always pressed and not separated between the first elastic roller 21 and the second elastic roller 22 when the first elastic roller 21 and the second elastic roller 22 slide from the second guide rail straight section a54 to the second guide rail straight section b 55. When the first elastic roller 21 and the second elastic roller 22 slide from the second straight guiding rail section b55 to the second straight guiding rail section a54, the first elastic roller 21 and the second elastic roller 22 are separated from the pressing fit, and the plastic wrap 16 is not pressed between the first elastic roller 21 and the second elastic roller 22.

The first elastic roller 21 and the second elastic roller 22 are matched with the two elastic baffles 4 to function as: when the first elastic roller 21 and the second elastic roller 22 move to the extreme position of the second guide straight section b55, the first elastic roller 21 and the second elastic roller 22 are located at the outlet square hole 14 of the square shell 2, and the first elastic roller 21 and the second elastic roller 22 push the two elastic baffles 4 open, so that the plastic wrap 16 squeezed between the first elastic roller 21 and the second elastic roller can extend out of the outlet square hole 14 of the square shell 2, and a user can hold the end extending out of the outlet square hole 14 of the square shell 2 by hand. At this time, it is set that when the user pulls out the fresh food film 16 from the direction case, the fresh food film 16 rotates the first elastic roller 21 counterclockwise, and the fresh food film 16 rotates the second elastic roller 22 clockwise. When the first elastic roller 21 and the second elastic roller 22 no longer act on the two elastic baffles 4, the two elastic baffles 4 are reset to the original state under the elastic reset of the elastic baffles 4. The two elastic baffles 4 are symmetrically installed in the outlet square hole 14, and the design that the ends of the two elastic baffles 4 opposite to each other are contacted is as follows: when the two elastic baffles 4 are not pushed open, the outlet square hole 14 can be sealed by the mutual matching of the two elastic baffles 4, and external dust is prevented from entering the outlet square hole 14.

The widths of the cutting chute 5 and the pushing chute 6 are as narrow as possible, so that the external dust can be prevented from entering the square shell 2 as far as possible, and the time that the preservative film 16 is polluted due to the adhesion of a large amount of external dust is prolonged.

As shown in fig. 7 and 24, the design of the first unidirectional clutch ring 25 and the second unidirectional clutch ring 26 is as follows: when the user pulls out the preservative film 16 from the direction case, the first one-way clutch ring 25 allows the first elastic roller 21 to rotate counterclockwise and does not allow the first elastic roller 21 to rotate clockwise; the second one-way clutch ring 26 allows the first elastic roller 21 to rotate clockwise and does not allow the first elastic roller 21 to rotate counterclockwise. The design that the first one-way clutch ring 25 does not allow the first elastic roller 21 to rotate clockwise and the second one-way clutch ring 26 does not allow the first elastic roller 21 to rotate counterclockwise ensures that: when the first elastic roller 21 and the second elastic roller 22 move from the second straight guiding rail section a54 to the second straight guiding rail section b55, the first elastic roller 21 and the second elastic roller 22 continuously press and cooperate to press the preservative film 16 between the first elastic roller 21 and the second elastic roller 22, and the preservative film 16 is stretched; when the preservative film 16 is stretched in the moving process of the first elastic roller 21 and the second elastic roller 22, the preservative film barrel 15 releases the preservative film 16 through rotation, when the preservative film 16 is stretched in the moving process of the first elastic roller 21 and the second elastic roller 22, the first one-way clutch ring 25 prevents the preservative film 16 from driving the first elastic roller 21 to rotate clockwise, and the second one-way clutch ring 26 prevents the preservative film 16 from driving the second elastic roller 22 to rotate anticlockwise; finally, the preservative film 16 can be smoothly pulled out of the square shell 2.

The design for the U-shaped push plate 19, the first push bar 20, the second push bar 82, the push block 8, the guide block 63, the first slide bar 49, the second slide bar 50 and the third spring 64 is as follows: firstly, when the push block 8 moves towards the outlet square hole 14 of the square shell 2 under the action of external force, the push block 8 drives the U-shaped push plate 19 to move towards the outlet square hole 14 of the square shell 2, the guide block 63 and the T-shaped plate 61 move along with the U-shaped push plate 19, and the third spring 64 is stretched; the U-shaped push plate 19 pushes the first push bar 20 to move towards the outlet square hole 14 of the square shell 2, the first push bar 20 drives the first slide bar 49 to move towards the outlet square hole 14 of the square shell 2, and then the first slide bar 49 slides along the first guide rail 17; the U-shaped push plate 19 pushes the second push bar 82 to move towards the outlet square hole 14 of the square shell 2 through the L-shaped plate 81, the second push bar 82 drives the second slide bar 50 to move towards the outlet square hole 14 of the square shell 2, and the second slide bar 50 slides along the second guide rail arc section a 57. Secondly, under the reset action of the third spring 64, the guide block 63 drives the U-shaped push plate 19 to move and reset, the push block 8, the T-shaped plate 61, the first push bar 20 and the second push bar 82 move and reset along the U-shaped push plate 19, the first push bar 20 drives the first slide bar 49 to move and reset along the first guide rail 17, and the second push bar 82 drives the second slide bar 50 to move and reset along the second guide rail arc section b56 of the second guide rail 18.

As shown in fig. 26, the design of the blade 42 in cooperation with the U-shaped cutting table 24: the user presses the pressing plate 33, the pressing plate 33 drives the cutting plate 34 to move downwards, and the first spring 35 is compressed; when the cutting board 34 is pressed to the maximum, the blade 42 on the cutting board 34 is just opposite to the U-shaped cutting table 24, so that the user pushes the pressing board 33, the pressing board 33 drives the cutting board 34, the cutting slider 29 and the blade 42 to slide along the cutting chute 5, and the blade 42 enters the U-shaped cutting table 24 to cut the plastic wrap 16. After the cutting slide block 29 slides from one end to the other end of the cutting chute 5, the blade 42 finishes cutting the plastic wrap 16 on the U-shaped cutting platform 24. When the user no longer presses the pressing plate 33, the pressing plate 33 drives the cutting plate 34 and the blade 42 to move and reset under the resetting action of the first spring 35.

The position requirements for the U-shaped push plate 19, the U-shaped plate 30 and the second support plate 12 are as follows: the U-shaped push plate 19 and the U-shaped plate 30 are of the same height so that the T-shaped plate 61 can be brought into press-fit relation with the stop 36. The spacing between the end 39 of the U-shaped plate 30 and the corresponding second support plate 12 ensures that the side plate 60 of the U-shaped push plate 19 can pass through smoothly.

For the actuator 7: when the blade 42 is not cutting the cling film 16, the cutting slide 29 is positioned at one end of the cutting chute 5 and the thumb tab 38 on the cutting slide 29 contacts the corresponding thumb tab 39 on the U-shaped plate 30. As shown in FIG. 25, the design of the end of the stopper 36 having the inclined surface 44 and the stopper end 62 of the T-shaped plate 61 is as follows: when the U-shaped push plate 19 drives the T-shaped plate 61 to move towards the outlet square hole 14 of the square shell 2, the limiting end 62 of the T-shaped plate 61 extrudes the inclined surface 44 on the limiting block 36, the limiting block 36 is extruded into the rectangular guide cylinder 32, and the second spring 45 is compressed; after the limiting end 62 of the T-shaped plate 61 passes over the limiting block 36, the limiting end 62 of the T-shaped plate 61 is located between the two fixing plates 31, at this time, because the inclined surface 44 on the limiting block 36 is not extruded any more, then under the reset action of the second spring 45, the end of the limiting block 36 having the inclined surface 44 extends out of the rectangular guide cylinder 32 again, so that the non-inclined surface of the end of the limiting block 36 having the inclined surface 44 limits the limiting end 62 of the T-shaped plate 61, and the limiting end 62 of the T-shaped plate 61 is prevented from being separated from between the two fixing plates 31. When the cutting slide block 29 moves from one end of the cutting slide groove 5 to the other end, the blade 42 cuts the preservative film 16, and in the process that the cutting slide block 29 moves, the shifting block 38 on the cutting slide block 29 shifts the other shifted end 39 on the U-shaped plate 30, the shifting block 38 drives the U-shaped plate 30 to move towards the direction that the blade 42 cuts the preservative film 16, the U-shaped plate 30 drives the trapezoidal slide block 37 to slide in the trapezoidal slide rail 28, and the two fixing plates 31, the rectangular guide cylinder 32, the second spring 45 and the limiting block 36 move along with the U-shaped plate 30. In the process that the limiting blocks 36 move along with the U-shaped plate 30, the two limiting ends 62 of the T-shaped plate 61 are just positioned in the distance between the ends of the two limiting blocks 36 with the inclined surfaces 44; since the distance between the ends of the two limit blocks 36 with the inclined surfaces 44 is S1, the distance between the two limit ends 62 of the T-shaped plate 61 is S2, and S1 is greater than S2; then, the situation that the position-limiting end 62 of the T-shaped plate 61 is no longer limited by the corresponding position-limiting block 36 occurs, and at this time, the U-shaped push plate 19 can utilize the restoring force of the third spring 64, so that the U-shaped push plate 19 pulls the T-shaped plate 61 to separate from the two fixing plates 31, and the two position-limiting blocks 36 will no longer limit the position of the T-shaped plate 61.

The design of the ladder-shaped sliding block 37 and the ladder-shaped sliding rail 28 in the invention is as follows: when the ladder-shaped slide block 37 slides in the ladder-shaped slide rail 28, the ladder-shaped slide block 37 cannot be separated from the ladder-shaped slide rail 28; the connection of the ladder slide 37 to the U-shaped plate 30 allows the U-shaped plate 30 to be suspended.

For the wind power mechanism 9: when the U-shaped push plate 19 pushes the second push bar 82 to move towards the outlet square hole 14 of the square housing 2 through the L-shaped plate 81, the fixed block 83 moves along with the second push bar 82, the fixed block 83 pulls the wire rope 69 to release the wire rope 69 from the winding wheel 71, as shown in fig. 30, the rotation of the winding wheel 71 to release the wire rope 69 is set to be counterclockwise, and the spiral spring 72 is compressed. For the function of the third one-way clutch ring 70, when the winding wheel 71 rotates counterclockwise, the winding wheel 71 cannot drive the first rotating shaft 76 to rotate through the third one-way clutch ring 70; when the winding wheel 71 rotates clockwise, the winding wheel 71 rotates the first rotating shaft 76 via the third one-way clutch ring 70. When the U-shaped push plate 19 drives the second push bar 82 to move and reset through the L-shaped plate 81, the fixed block 83 moves and resets along with the second push bar 82, then under the reset force of the spiral spring 72, the winding wheel 71 rotates clockwise to wind the steel wire rope 69, the winding wheel 71 drives the first rotating shaft 76 to rotate through the third one-way clutch ring 70, the first rotating shaft 76 drives the second rotating shaft 78 to rotate through the first bevel gear 68 and the second bevel gear 77, the second rotating shaft 78 drives the blowing fan 80 to rotate, and the blowing fan 80 blows air.

The specific implementation mode is as follows: when the fresh-keeping film tube 15 of the present invention needs to be replaced, the cover plate 3 is removed, and then one end of the fresh-keeping film tube 15 is removed from the corresponding support rod 48 by sliding left and right, so that the other end of the fresh-keeping film tube 15 can be smoothly removed from the other support rod 48. One end of the fresh-keeping film tube 15 is inserted into the corresponding support bar 48 by the new fresh-keeping film tube 15, and then the other end of the fresh-keeping film tube 15 is inserted into the other support bar 48 by the left-right sliding mode; one end of the preservative film 16 on the preservative film barrel 15 is pressed between the first elastic roller 21 and the second elastic roller 22. The second straight section b55 of the second guide rail 18 is close to the outlet square hole 14 of the square shell 2. The wind mechanism 9 of the present invention is located at the lower end of the plastic wrap 16.

When the pusher 8 is not pushed by the user, the second slide bar 50 is located in the second straight section a54 of the second guide rail 18, and the first slide bar 49 is located in the corresponding first straight section 52 of the first guide rail 17; at this time, the first elastic roller 21 and the second elastic roller 22 are in press fit, and one end of the plastic wrap 16 is pressed between the first elastic roller 21 and the second elastic roller 22. The end of the stop 36 having the ramped surface 44 is not in press fit with the stop end 62 of the T-shaped plate 61. The pressing plate 33 is not pressed down, the blade 42 does not cut the preservative film 16, the cutting slide block 29 is positioned at one end of the cutting chute 5, at this time, the shifting block 38 on the cutting slide block 29 is contacted with the corresponding shifted end 39 on the U-shaped plate 30, and one limiting block 36 of the two limiting blocks 36 at the U-shaped plate 30 is matched with the limiting end 62 on the T-shaped plate 61.

When the preservative film 16 needs to be taken out of the square shell 2, a user pushes the push block 8 to move towards the outlet square hole 14 of the square shell 2 along the push chute 6, the push block 8 drives the U-shaped push plate 19 to move towards the outlet square hole 14 of the square shell 2, the guide block 63 and the T-shaped plate 61 move along with the U-shaped push plate 19, and the third spring 64 is stretched; the U-shaped push plate 19 pushes the first push bar 20 to move towards the outlet square hole 14 of the square shell 2, the first push bar 20 drives the first slide bar 49 to move towards the outlet square hole 14 of the square shell 2, and then the first slide bar 49 slides along the first guide rail 17; the U-shaped push plate 19 pushes the second push bar 82 to move towards the outlet square hole 14 of the square shell 2 through the L-shaped plate 81, the second push bar 82 drives the second slide bar 50 to move towards the outlet square hole 14 of the square shell 2, at this time, the second slide bar 50 moves towards the second guide rail straight section b55 from the second guide rail straight section a54 of the second guide rail 18, the second slide bar 50 touches the first arc-shaped elastic piece 59, at this time, the second slide bar 50 extrudes the first arc-shaped elastic piece 59, the first arc-shaped elastic piece 59 is extruded and bent, and under the guidance of the first arc-shaped elastic piece 59, the second slide bar 50 does not slide into the second guide rail arc-shaped section b56 but slides into the second guide rail arc-shaped section a 57; during the process that the second slide bar 50 slides along the second guide rail arc section a57 to the second guide rail straight section b55, the second elastic roller 22 maintains the extrusion fit with the first elastic roller 21; the first elastic roller 21 and the second elastic roller 22 stretch the preservative film 16 from the preservative film drum 15 through a press fit, and the preservative film drum 15 releases the preservative film 16 through rotation. Due to the action of the first one-way clutch ring 25 and the second one-way clutch ring 26, the preservative film 16 cannot drive the first elastic roller 21 to rotate clockwise, and the preservative film 16 cannot drive the second elastic roller 22 to rotate anticlockwise; finally, the preservative film 16 can be smoothly pulled out of the square shell 2.

When the push block 8 moves towards the outlet square hole 14 of the square shell 2 under the action of external force, the push block 8 drives the U-shaped push plate 19 to move towards the outlet square hole 14 of the square shell 2, the guide block 63 and the T-shaped plate 61 move along with the U-shaped push plate 19, and the third spring 64 is stretched. When the U-shaped push plate 19 is pushed by the first push bar 20 and the second push bar 82, the first elastic roller 21 on the first slide bar 49 and the second elastic roller 22 on the second slide bar 50 are positioned at the outlet square hole 14 of the square shell 2, the limiting end 62 of the T-shaped plate 61 presses the inclined surface 44 on the corresponding limiting block 36, the limiting block 36 is pressed into the rectangular guide cylinder 32, and the second spring 45 is compressed. After the limiting end 62 of the T-shaped plate 61 passes over the limiting block 36, the limiting end 62 of the T-shaped plate 61 is located between the two fixing plates 31, at this time, because the inclined surface 44 on the limiting block 36 is not extruded any more, then under the reset action of the second spring 45, the end of the limiting block 36 having the inclined surface 44 extends out of the rectangular guide cylinder 32 again, so that the non-inclined surface of the end of the limiting block 36 having the inclined surface 44 limits the limiting end 62 of the T-shaped plate 61, and the limiting end 62 of the T-shaped plate 61 is prevented from being separated from between the two fixing plates 31. Therefore, when a user does not push the U-shaped push plate 19 any more through the push block 8, the T-shaped plate 61 on the U-shaped push plate 19 is limited, and the U-shaped push plate 19 cannot return automatically, so that the first elastic roller 21 on the first sliding rod 49 and the second elastic roller 22 on the second sliding rod 50 are located at the outlet square hole 14 of the square shell 2.

Under the push of the first push bar 20 and the second push bar 82, the first slide bar 49 slides along the first guide rail 17, and the second slide bar 50 slides into the second guide rail straight section b55 after passing through the second guide rail arc section a57 from the second guide rail straight section a 54; due to the arc-shaped guidance of the first guide track arc-shaped section 51 in the first guide track 17 and the second guide track arc-shaped section a57 in the second guide track 18, the first slide bar 49 will move up and down along the first push bar 20 when the first slide bar 49 slides along the first guide track arc-shaped section 51; when the second slide bar 50 slides along the second guide rail arc section a57, the second slide bar 50 will move upward to the limit position along the second push bar 82, and then move downward again along the second push bar 82; during the upward movement of the second slide bar 50, the second slide bar 50 slides from the second push bar 82 to the first push bar 20 through the distance D; the second slider bar 50 slides from the first pusher bar 20 through the distance D and onto the second pusher bar 82 again as guided by the second guide track arcuate segment a 57. The distance D allows the fixing strip 23 to pass through during the process of the first pushing strip 20 and the second pushing strip 82 respectively driving the first sliding rod 49 and the second sliding rod 50 to move, so as to ensure that the first pushing strip 20 and the second pushing strip 82 can smoothly drive the first sliding rod 49 and the second sliding rod 50 to move.

When the first elastic roller 21 and the second elastic roller 22 move to the extreme position of the second guide straight section b55, the first elastic roller 21 and the second elastic roller 22 are located at the outlet square hole 14 of the square shell 2, and the first elastic roller 21 and the second elastic roller 22 push the two elastic baffles 4 open, so that the plastic wrap 16 squeezed between the first elastic roller 21 and the second elastic roller can extend out of the outlet square hole 14 of the square shell 2, and a user can hold the end extending out of the outlet square hole 14 of the square shell 2 by hand. At this time, it is set that when the user pulls out the fresh food film 16 from the direction case, the fresh food film 16 rotates the first elastic roller 21 counterclockwise and the fresh food film 16 rotates the second elastic roller 22 clockwise due to the first one-way clutch ring 25 and the second one-way clutch ring 26. Therefore, the preservative film 16 cannot be pulled out under the limitation of the first elastic roller 21 and the second elastic roller 22, the preservative film 16 can be continuously stretched by a user, and the preservative film barrel 15 can be driven by the preservative film 16 to rotate to release the wound preservative film 16.

After the preservative film 16 is pulled out for the using length, a user presses the pressing plate 33 downwards, the pressing plate 33 drives the cutting plate 34 to move downwards, and the first spring 35 is compressed; when the cutting board 34 is pressed to the maximum, the blade 42 on the cutting board 34 is just opposite to the U-shaped cutting table 24, so that the user pushes the pressing board 33, the pressing board 33 drives the cutting board 34, the cutting slider 29 and the blade 42 to slide along the cutting chute 5, and the blade 42 enters the U-shaped cutting table 24 to cut the plastic wrap 16. After the cutting slide block 29 slides from one end to the other end of the cutting chute 5, the blade 42 finishes cutting the plastic wrap 16 on the U-shaped cutting platform 24. The preservative film 16 in the square shell 2 is extruded by the first elastic roller 21 and the second elastic roller 22, and the preservative film 16 is always in a tensioning state in the process of pulling out the preservative film 16; the blade 42 can easily cut the cling film 16 in a tensioned state when the blade 42 is used to cut the cling film 16. After the plastic wrap 16 is cut, one end of the cut plastic wrap 16 is attached to the edge of the U-shaped cutting table 24. When the cutting slide block 29 moves from one end of the cutting chute 5 to the other end, the blade 42 cuts the preservative film 16; in the moving process of the cutting slide block 29, the shifting block 38 on the cutting slide block 29 is separated from the contact with the corresponding shifted end 39 on the U-shaped plate 30, but after the preservative film 16 is cut by the blade 42, the shifting block 38 on the cutting slide block 29 shifts the other shifted end 39 on the U-shaped plate 30, the shifting block 38 drives the U-shaped plate 30 to move towards the direction that the blade 42 cuts the preservative film 16, the U-shaped plate 30 drives the trapezoidal slide block 37 to slide in the trapezoidal slide rail 28, and the two fixing plates 31, the rectangular guide cylinder 32, the second spring 45 and the limiting block 36 move along with the U-shaped plate 30. In the process that the limiting blocks 36 move along with the U-shaped plate 30, the two limiting ends 62 of the T-shaped plate 61 are just positioned in the distance between the ends of the two limiting blocks 36 with the inclined surfaces 44; since the distance between the ends of the two limit blocks 36 with the inclined surfaces 44 is S1, the distance between the two limit ends 62 of the T-shaped plate 61 is S2, and S1 is greater than S2; then, the situation that the position-limiting end 62 of the T-shaped plate 61 is no longer limited by the corresponding position-limiting block 36 occurs, and at this time, the U-shaped push plate 19 can utilize the restoring force of the third spring 64, so that the U-shaped push plate 19 pulls the T-shaped plate 61 to separate from the two fixing plates 31, and the two position-limiting blocks 36 will no longer limit the position of the T-shaped plate 61. Under the reset action of the third spring 64, the guide block 63 drives the U-shaped push plate 19 to move and reset, the push block 8, the T-shaped plate 61, the first push bar 20 and the second push bar 82 move and reset along the U-shaped push plate 19, the first push bar 20 drives the first slide bar 49 to move and reset along the first guide rail 17, and the second push bar 82 drives the second slide bar 50 to move and reset along the second guide rail arc section b56 of the second guide rail 18. When the first elastic roller 21 and the second elastic roller 22 no longer act on the two elastic baffles 4, the two elastic baffles 4 are reset to the original state under the elastic reset of the elastic baffles 4.

When the second slide bar 50 moves from the second straight guide rail section b55 of the second guide rail 18 to the second straight guide rail section a54, the second slide bar 50 touches the second arc-shaped elastic piece 58, and the second slide bar 50 presses the second arc-shaped elastic piece 58, so that the second arc-shaped elastic piece 58 is pressed and bent, and under the guidance of the second arc-shaped elastic piece 58, the second slide bar 50 does not slide into the second guide rail arc-shaped section a57, but slides into the second guide rail arc-shaped section b 56; the second slide bar 50 slides along the second guide arc section b56 to the second guide straight section a54, at this time, the second elastic roller 22 is separated from the first elastic roller 21, and there is a gap between the second elastic roller 22 and the first elastic roller 21. When the first elastic roller 21 and the second elastic roller 22 slide and return from the second straight guide rail section b55 to the second straight guide rail section a54 through the second arc guide rail section b56, the first elastic roller 21 and the second elastic roller 22 are separated from the pressing fit, and the plastic wrap 16 is not pressed between the first elastic roller 21 and the second elastic roller 22.

When the U-shaped push plate 19 moves to the direction away from the outlet square hole 14 of the square shell 2, the U-shaped push plate 19 drives the first push strip 20 to move, and the U-shaped push plate 19 drives the second push strip 82 to move through the L-shaped plate 81; then the first sliding bar 49 slides along the first guiding rail 17 to return under the pulling of the first pushing bar 20 and the second pushing bar 82, and the second sliding bar 50 slides into the second guiding rail 18 segment a after passing through the second guiding rail arc segment b56 from the second guiding rail straight segment b 55; due to the arc-shaped guidance of the first guide track arc-shaped section 51 of the first guide track 17 and the second guide track arc-shaped section b56 of the second guide track 18, the first sliding bar 49 will move up and down along the first push bar 20 when the first sliding bar 49 is slidably reset along the first guide track arc-shaped section 51; after the second slide bar 50 is slid along the second guide rail arc section b56 to return, the second slide bar 50 will move downwards along the second push bar 82 to the limit position, and then move upwards again along the second push bar 82. In the process that the first push bar 20 and the second push bar 82 respectively drive the first slide bar 49 and the second slide bar 50 to move and reset, the distance D allows the fixing bar 23 to pass through, so that the first push bar 20 and the second push bar 82 can smoothly drive the first slide bar 49 and the second slide bar 50 to move and reset.

When the first elastic roller 21 and the second elastic roller 22 move to return to the original positions, the second slide bar 50 is located in the second straight guide rail section a54 of the second guide rail 18, and the first slide bar 49 is located in the corresponding first straight guide rail section 52 of the first guide rail 17; at this time, the first elastic roller 21 and the second elastic roller 22 are again in press fit, and the plastic wrap 16 is again pressed between the first elastic roller 21 and the second elastic roller 22.

When the plastic wrap 16 needs to be pulled out again, the user can repeat the above process again.

Compared with the preservative film cutter popular in the market, the cutter disclosed by the invention can realize that the preservative film can be taken out of the cutter without frequently opening the cover of the preservative film cutter, so that the convenience for frequently taking the preservative film by a user is greatly increased. In addition, compared with the preservative film cutter which does not need to open the cover on the market, the preservative film cutting process in the cutter is completed in the square shell 2, after the preservative film is cut, a section of preservative film 16 pulled out of the preservative film cylinder 15 is kept in the square shell 2, the preservative film 16 kept in the square shell 2 is shielded by the square shell 2, the bottom plate 1, the cover and the elastic baffle 4, dust flowing in the outside air is difficult to adsorb a section of preservative film 16 pulled out of the preservative film cylinder 15 in the square shell 2, the probability that the section of preservative film 16 pulled out of the preservative film cylinder 15 is polluted by a plurality of dust is reduced, and the clean time of the section of preservative film 16 pulled out of the preservative film cylinder 15 is prolonged. The cutter is conveniently applied to family life, particularly after food is wrapped in the family life, the preservative film 16 can be retained for a long time and can be reused, and in the retained time, a section of preservative film 16 pulled out of the preservative film cylinder is not easily polluted by dust, so that the safety of food packaging next time is ensured.

When the U-shaped push plate 19 pushes the second push bar 82 to move towards the outlet square hole 14 of the square shell 2 through the L-shaped plate 81, the fixed block 83 moves along with the second push bar 82, the fixed block 83 pulls the steel wire rope 69 to release the steel wire rope 69 from the winding wheel 71, at this time, the rotation of the winding wheel 71 to release the steel wire rope 69 is set to be anticlockwise, and the spiral spring 72 is compressed. Under the action of the third one-way clutch ring 70, the winding wheel 71 cannot drive the first rotating shaft 76 to rotate through the third one-way clutch ring 70, and the blowing fan 80 cannot input power.

After the blade 42 has cut the plastic wrap 16, one end of the cut plastic wrap 16 will adhere to the edge of the U-shaped cutting table 24. Under certain conditions, one end of the cut preservative film 16 may not be attached to the edge of the U-shaped cutting platform 24 and may float on the bottom plate 1; or, in the process of squeezing the preservative film 16 again after the first elastic roller 21 and the second elastic roller 22 move and reset, the quick movement and reset of the first elastic roller 21 and the second elastic roller 22 can cause an air flow near the U-shaped cutting table 24, the air flow can possibly cause the preservative film 16 attached to the edge of the U-shaped cutting table 24 to be not attached to the U-shaped cutting table 24, the preservative film 16 falls on the bottom plate 1 from the U-shaped cutting table 24, and the preservative film 16 is not easily squeezed after the first elastic roller 21 and the second elastic roller 22 move and reset. To avoid this, the wind turbine 9 is only activated. In the process that the first pushing bar 20 enables the first elastic roller 21 to move and reset, and the second pushing bar 82 enables the second elastic roller 22 to move and reset, the fixing block 83 moves and resets along with the second pushing bar 82, so under the resetting force of the spiral spring 72, the winding wheel 71 rotates clockwise to wind the steel wire rope 69, the winding wheel 71 drives the first rotating shaft 76 to rotate through the third one-way clutch ring 70, the first rotating shaft 76 drives the second rotating shaft 78 to rotate through the first bevel gear 68 and the second bevel gear 77, the second rotating shaft 78 drives the blowing fan 80 to rotate, and the blowing fan 80 blows air. The operation of the blowing fan 80 enables the lower end of the U-shaped cutting table 24 to have continuous air flow, if the one end of the preservative film 16 adsorbed at the edge of the U-shaped cutting table 24 is separated from the adsorption, the air blown by the blowing fan 80 flows down, the preservative film 16 cannot float on the bottom plate 1, one end of the preservative film 16 can be driven by the air flow to continuously float at the U-shaped cutting table 24, so that the preservative film 16 can be completely extruded after the first elastic roller 21 and the second elastic roller 22 are moved and reset, and finally the preservative film 16 can be continuously pulled out from the square shell 2 for use by the first elastic roller 21 and the second elastic roller 22.

In conclusion, the invention has the main beneficial effects that: under the pushing of the pushing block 8 by external force, the pushing block 8 pushes the U-shaped pushing plate 19, so that the first pushing strip 20 pushes the first sliding rod 49, and the second pushing strip 82 pushes the second sliding rod 50; and further, the plastic wrap 16 is enabled to extend out of the square shell 2 into the square outlet hole 14 of the square shell 2 through the extrusion fit of the first elastic roller 21 and the second elastic roller 22, so that a user can take out the plastic wrap 16 from the cutter conveniently, and the trouble that the cover of the plastic wrap cutter needs to be opened frequently to take the plastic wrap 16 by a traditional plastic wrap cutter is avoided. After the cutter of the invention finishes cutting, the first elastic roller 21 and the second elastic roller 22 can automatically move and reset to press the preservative film 16 again so as to be used repeatedly next time, thus greatly increasing the convenience of operation. In addition, the cutter of the invention can prevent the preservative film 16 in the cutter from being polluted by dust to a certain extent, prolong the clean time of the preservative film 16 in the cutter and ensure the safety of the next packaged food. The design of the wind mechanism 9 in the cutter can completely ensure that the preservative film 16 can be completely extruded after the first elastic roller 21 and the second elastic roller 22 move and reset, and the condition that one end of the cut preservative film 16 can not be extruded again by the first elastic roller 21 and the second elastic roller 22 after falling off from the U-shaped cutting table 24 is avoided. The invention has simple structure and better use effect.

Claims

1. A plastic wrap cutterbar for plastic packaging which characterized in that: the device comprises a bottom plate, a square shell, a cover plate, an elastic baffle, a cutting chute, a pushing chute, an actuating mechanism, a pushing block, a wind mechanism, a first supporting plate, a second supporting plate, a strip-shaped guide rail, an outlet square hole, a first guide rail, a second guide rail, a U-shaped push plate, a first pushing strip, a second pushing strip, an L-shaped plate, a first elastic roller, a second elastic roller, a fixing strip, a U-shaped cutting table, a first one-way separating ring, a second one-way separating ring, a supporting rod, a first sliding rod, a second sliding rod, a first arc-shaped elastic sheet, a second arc-shaped elastic sheet, a T-shaped plate, a guide block, a third spring, a first through hole and a second through hole, wherein the square shell is arranged on the bottom plate; the cover plate is arranged at one end of the square shell far away from the bottom plate; an outlet square hole is formed in the middle of the side shell surface of the square shell; the two elastic baffles are symmetrically arranged in the outlet square hole, and the opposite ends of the two elastic baffles are in contact with each other; the cover plate is provided with a through cutting chute and a pushing chute; the actuating mechanism is arranged on the cover plate; two first supporting plates are symmetrically arranged on the upper surface of one end of the bottom plate, which is far away from the square outlet hole of the square shell; the two support rods are symmetrically arranged on the two first support plates and are positioned between the two first support plates; two second supporting plates are symmetrically arranged on the upper surface of one end of the bottom plate, which is close to the square outlet hole of the square shell; the two strip-shaped guide rails are respectively arranged at one ends of the two second supporting plates far away from the bottom plate;

the structures mounted on the side surfaces of the two second support plates opposite to each other are the same, and for the side surface of any one of the second support plates: the first guide rail and the second guide rail are arranged on the side surface of the second support plate, and the first guide rail is positioned at the upper end of the second guide rail; the first guide rail is composed of a first guide rail arc section and two first guide rail straight sections, and two ends of the first guide rail arc section are respectively connected with the two first guide rail straight sections; the second guide rail is composed of a second guide rail arc section a, a second guide rail arc section b, a second guide rail straight section a and a second guide rail straight section b; the radian of the second guide rail arc-shaped section a is the same as that of the second guide rail arc-shaped section b, and the second guide rail arc-shaped section a and the second guide rail arc-shaped section b are distributed in an up-down symmetrical mode; the second guide rail arc section a is positioned above the second guide rail arc section b; two ends of the second guide rail arc section a are respectively connected with two ends of the second guide rail arc section b; the joint of the second guide rail arc section a and one end of the second guide rail arc section b is connected with a second guide rail straight section a, and the joint of the other end of the second guide rail arc section a is connected with a second guide rail straight section b; a second arc-shaped elastic sheet is arranged on the inner top surface of the guide rail at the joint of the second guide rail arc-shaped section a and the second guide rail straight section b, one end of the second arc-shaped elastic sheet, which is far away from the second guide rail straight section b, is connected with the inner top surface of the guide rail of the second guide rail arc-shaped section a, and the other end of the second arc-shaped elastic sheet is not connected with the inner top surface of the guide rail of the second guide rail straight section b; a first arc-shaped elastic sheet is arranged on the inner bottom surface of the guide rail at the connecting part of the second guide rail arc-shaped section b and the second guide rail straight section a, one end of the first arc-shaped elastic sheet, which is far away from the second guide rail straight section a, is connected with the inner bottom surface of the guide rail of the second guide rail arc-shaped section b, and the other end of the first arc-shaped elastic sheet is not connected with the inner bottom surface of the guide rail of the second guide rail straight section a;

two ends of the first sliding rod are respectively arranged in the two first guide rails in a sliding fit manner; two ends of the second sliding rod are respectively arranged in the two second guide rails in a sliding fit manner; two first through holes are symmetrically formed in the first sliding rod; the two first one-way clutch rings are symmetrically arranged on the outer circular surface of the first slide bar and are positioned between the two first through holes; two ends of the first elastic roller are respectively arranged on the outer circular surfaces of the two first one-way clutch rings; two second through holes are symmetrically formed in the second sliding rod; the two second one-way clutch rings are symmetrically arranged on the outer circular surface of the second sliding rod and are positioned between the two second through holes; two ends of the second elastic roller are respectively arranged on the outer circular surfaces of the two second one-way clutch rings; the first elastic roller is matched with the second elastic roller; the second sliding rod is respectively matched with the first arc-shaped elastic sheet and the second arc-shaped elastic sheet;

the U-shaped push plate consists of a strip-shaped plate and two side plates; one end of the push block is arranged on the upper surface of the middle position of the strip-shaped plate of the U-shaped push plate, and the other end of the push block penetrates through the push chute of the cover plate; the push block slides in the push sliding chute; one end of the T-shaped plate is arranged on the side surface of the middle position of the strip-shaped plate of the U-shaped push plate; the T-shaped plate is positioned between the two side plates of the U-shaped push plate; the T-shaped plate is provided with two limiting ends, and the two limiting ends are far away from the strip-shaped plate of the U-shaped push plate; two limiting ends of the T-shaped plate are matched with the actuating mechanism; two side plates of the U-shaped push plate are respectively provided with a guide block, and the two guide blocks are symmetrical; the two guide blocks are arranged in the two strip-shaped guide rails in a sliding fit manner; one end of each of the two third springs is respectively arranged on the two guide blocks, and the other end of each of the two third springs is respectively arranged on the inner side surfaces of the two strip-shaped guide rails; the two third springs are respectively positioned in the two strip-shaped guide rails; one end of each of the two side plates of the U-shaped push plate is provided with a first pushing strip; the first pushing strip, the first sliding rod and the second sliding rod are positioned on the same side, and the first pushing strip penetrates through the corresponding first through hole of the first sliding rod; the first pushing strip is matched with a corresponding second through hole of the second sliding rod; one end of each of the two L-shaped plates is respectively arranged at one end, far away from the corresponding first pushing strip, of each of the two side plates of the U-shaped push plate, and the other end of each of the two L-shaped plates is respectively provided with a second pushing strip; the second pushing strip, the first sliding rod and the second sliding rod are positioned on the same side, and the second pushing strip penetrates through a corresponding second through hole of the second sliding rod; first and second push bars on the same side: the first pushing strip penetrates through one end of the first sliding rod and is opposite to one end of the second pushing strip penetrating through the second sliding rod, a distance exists between one end of the first pushing strip penetrating through the first sliding rod and one end of the second pushing strip penetrating through the second sliding rod, the distance is named as a distance D, and the distance D is smaller than the hole length of a second through hole in the second sliding rod;

the U-shaped cutting table is respectively arranged on the two second supporting plates through two fixing strips; the fixed strip is positioned between the second guide rail arc section a and the second guide rail arc section b of the corresponding second guide rail; the executing mechanism is matched with the U-shaped cutting table;

the fixing strip, the first pushing strip and the second pushing strip are positioned on the same side: the fixing strips are matched with the distance D;

the two wind mechanisms are symmetrically arranged on the bottom plate and are positioned between the first supporting plate and the second supporting plate; the two wind mechanisms are respectively matched with the two second pushing strips;

the executing mechanism comprises a trapezoidal sliding rail, a cutting sliding block, a U-shaped plate, a fixing plate, a rectangular guide cylinder, a pressing plate, a cutting plate, a first spring, a limiting block, a trapezoidal sliding block, a shifting block, a shifted end, a strip-shaped plate, a clamping groove, a blade, a sliding through groove, an inclined plane and a second spring, wherein the cutting sliding block is internally provided with a through sliding through groove; two clamping grooves are symmetrically formed in two sides of the cutting sliding block; the cutting slide block is arranged in the cutting chute in a sliding fit manner; the cutting plate is arranged in the sliding through groove of the cutting sliding block in a sliding fit mode, and two ends of the cutting plate penetrate out of the cutting sliding block; one end of the cutting plate is provided with a blade, and the other end of the cutting plate is provided with a pressing plate; the pressing plate is positioned on the cover plate; the first spring is nested on the cutting plate, one end of the first spring is arranged on the pressing plate, and the other end of the first spring is arranged on the cutting slide block; a shifting block is arranged on the side surface of the cutting slide block; the trapezoidal sliding rail is arranged on the lower surface of the cover plate and is close to the cutting sliding groove; the ladder-shaped sliding block is arranged in the ladder-shaped sliding rail in a sliding fit manner; one end of the trapezoidal sliding block, which penetrates out of the trapezoidal sliding rail, is provided with a U-shaped plate; the U-shaped plate consists of a strip-shaped plate and two dialed ends; the shifting block is matched with the two shifted ends; the two rectangular guide cylinders are both arranged on the strip-shaped plate of the U-shaped plate through a fixing plate, and the two rectangular guide cylinders are far away from the end, to be poked, of the U-shaped plate; the two limiting blocks are respectively arranged in the two rectangular guide cylinders in a sliding fit manner; one end of each of the two second springs is respectively arranged on the two limiting blocks, and the other end of each of the two second springs is respectively arranged on the bottom cylinder surfaces of the two rectangular guide cylinders; the two second springs are respectively positioned in the two rectangular guide cylinders; one end of each limiting block, which is far away from the corresponding second spring, is provided with an inclined plane;

the wind power mechanism comprises a first bevel gear, a steel wire rope, a third one-way clutch ring, a winding wheel, a volute spiral spring, a third support plate, a first connecting block, a second connecting block, a first rotating shaft, a second bevel gear, a second rotating shaft, a fourth support plate, a blowing fan and a fixed block, wherein the third support plate and the fourth support plate are arranged on the bottom plate; the first rotating shaft is arranged in a circular hole of the third supporting plate through a bearing, and two ends of the first rotating shaft penetrate through the third supporting plate; a third one-way clutch ring is arranged on the outer circular surface of one end of the first rotating shaft, and a first bevel gear is arranged at the other end of the first rotating shaft; the winding wheel is arranged on the outer circular surface of the third one-way clutch ring; the spiral spring is nested on the first rotating shaft, one end of the spiral spring is installed on the side face of the winding wheel through a first connecting block, and the other end of the spiral spring is installed on the third supporting plate through a second connecting block; the scroll spring is positioned between the winding wheel and the third supporting plate; the second rotating shaft is arranged in a round hole of the fourth supporting plate through a bearing, and two ends of the second rotating shaft penetrate through the fourth supporting plate; one end of the second rotating shaft is provided with a blowing fan, and the other end of the second rotating shaft is provided with a second bevel gear; the first bevel gear is meshed with the second bevel gear; the fixed block is arranged on the side surface of one end of the second pushing strip connected with the corresponding L-shaped plate; one end of the steel wire rope is arranged on the winding wheel in a winding mode, and the other end of the steel wire rope is arranged on the fixed block;

one end of the limiting block with the inclined plane is matched with the limiting end of the T-shaped plate; when the second spring is not compressed, the distance between one ends of the two limit blocks with the inclined planes is S1; the distance between the two limiting ends of the T-shaped plate is S2; s1 is greater than S2;

the blade is matched with the U-shaped cutting table;

the first elastic roller and the second elastic roller are matched with the two elastic baffles;

2. The cling film cutter as claimed in claim 1, wherein: the elastic baffle is made of plastics.

3. The cling film cutter as claimed in claim 1, wherein: and lubricating oil is coated on the inner wall surfaces of the first guide rail and the second guide rail.

4. The cling film cutter as claimed in claim 1, wherein: the first arc-shaped elastic piece and the second arc-shaped elastic piece are made of elastic steel plates.

5. The cling film cutter as claimed in claim 1, wherein: the first elastic roller and the second elastic roller are made of rubber.

6. The cling film cutter as claimed in claim 1, wherein: the third spring is an extension spring; when the third spring is not stretched, the second slide bar is positioned in the second guide rail straight section a of the second guide rail, and the first slide bar is positioned in the corresponding first guide rail straight section of the first guide rail; at the moment, the first elastic roller and the second elastic roller are in extrusion fit, and one end of the limiting block with the inclined plane is not in extrusion fit with the limiting end of the T-shaped plate.

7. The cling film cutter as claimed in claim 1, wherein: the first spring is a compression spring; when the first spring is uncompressed, the cutting board upper blade is positioned above the first guide rail.

8. The cling film cutter as claimed in claim 1, wherein: the second spring is a compression spring; when the second spring is not compressed, one end of the limiting block with the inclined plane penetrates out of the corresponding rectangular guide cylinder.

9. The cling film cutter as claimed in claim 1, wherein: the fresh-keeping film packaging machine also comprises a fresh-keeping film cylinder and a fresh-keeping film, wherein the fresh-keeping film cylinder is provided with the wound fresh-keeping film; two ends of the preservative film cylinder are arranged on the two supporting rods in a rotating fit mode; the preservative film is matched with the first elastic roller and the second elastic roller; the preservative film is matched with the blade; the preservative film is matched with the U-shaped cutting table.