CN112937982A

CN112937982A - Cold-chain logistics fresh-keeping transportation method

Info

Publication number: CN112937982A
Application number: CN202110435561.4A
Authority: CN
Inventors: 蔡荣坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-06-11

Abstract

The invention relates to a cold-chain logistics fresh-keeping transportation method, which uses cold-chain logistics fresh-keeping transportation equipment, wherein the cold-chain logistics fresh-keeping transportation equipment comprises a base and a film coating device, and the upper surface of the base is provided with the film coating device. The invention can solve the following problems: the vegetable preservative film is wrapped in the vegetable in three processes of pulling out the preservative film, wrapping the vegetable and cutting off the preservative film, but the pulling out of the preservative film cannot be performed automatically, the vegetable preservative film is pulled manually each time, time and labor are wasted, and the efficiency of wrapping the preservative film by the vegetable is influenced; the control of plastic wrap parcel volume is difficult to carry out according to the thickness of different kind vegetables at every turn for no matter how thick the thin vegetable of many uses the plastic wrap of length more or less to wrap up, leads to the parcel effect of some vegetables poor, influences the fresh-keeping effect of vegetables, still can cause the waste of plastic wrap.

Description

Cold-chain logistics fresh-keeping transportation method

Technical Field

The invention relates to the field of vegetable processing, in particular to a cold-chain logistics fresh-keeping transportation method.

Background

The preservation of agricultural products is the continuation of agricultural production, and the postnatal storage occupies an important position of agriculture, and can effectively reduce loss. After being harvested, the vegetables are easily infected by harmful microorganisms such as bacteria, mold and the like, are rotten and go bad, and are not beneficial to storage and transportation of the vegetables. The vegetable agricultural products are characterized in that the water content is quite high, the water source is easily lost, the water content of vegetable tissues is reduced, the swelling pressure of cells is reduced, and the vegetables lose the fresh state, such as wilting, shrinking, luster fading and the like, and in order to reduce the water loss of the vegetables in the transportation process after the vegetables are picked, a preservative film is coated on the vegetables to play a certain role; the shape of some long-strip-shaped vegetables is regular, so that the vegetables can be easily wrapped by the preservative film, but the efficiency of wrapping the preservative film of the vegetables can be improved, and the fresh state of the vegetables can be better ensured.

At present, when the long-strip-shaped vegetables are wrapped by the preservative film, the following problems exist:

1. when the existing preservative film wrapping equipment wraps the preservative films of vegetables, the processes of pulling out the preservative films, wrapping the vegetables and cutting off the preservative films are needed for wrapping the preservative films of the vegetables every time, but the pulling-out of the preservative films cannot be automatically carried out, the films are manually pulled every time, and the efficiency of wrapping the preservative films of the vegetables is affected by time and labor;

2. when present plastic wrap parcel equipment carries out the plastic wrap parcel to vegetables, be difficult to carry out the control of plastic wrap parcel volume according to the thickness of different kind vegetables at every turn for no matter how thick the thin vegetable of many uses the plastic wrap of length more or less to wrap up, lead to the parcel effect of some vegetables poor, influence the fresh-keeping effect of vegetables, still can cause the waste of plastic wrap.

Disclosure of Invention

The invention aims to provide a cold-chain logistics fresh-keeping transportation method to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the cold-chain logistics fresh-keeping transportation method uses cold-chain logistics fresh-keeping transportation equipment, the cold-chain logistics fresh-keeping transportation equipment comprises a base and a film coating device, and the specific method when the cold-chain logistics fresh-keeping transportation equipment is used for wrapping long-strip-shaped vegetables with fresh-keeping films is as follows:

step one, preparation operation: debugging cold-chain logistics fresh-keeping transportation equipment;

step two, vegetable coating operation: the preparation of the long-strip-shaped vegetables needing to be wrapped by the preservative film is finished, the wrapping device is started, the vegetables prepared in the step one are placed into the wrapping device one by one to be wrapped by the preservative film, the vegetables wrapped by the preservative film fall to the tightening unit, and the tightening unit tightens the preservative film wrapped on the outer surfaces of the vegetables;

step three, vegetable collection and loading: carrying out centralized loading on the vegetables subjected to tightening treatment in the third step, and transporting the vegetables to a selling place;

the upper surface of the base is provided with a film coating device; wherein:

the film coating device comprises a film coating frame body, a film coating round frame, film coating sliding plates, film coating pressing blocks, film drawing units, driving units, film coating supporting rods, tightening units and preservative film rollers, wherein the film coating frame body is arranged on the upper surface of a base, the film coating round frame is fixedly arranged in the middle of the film coating frame body, the film coating sliding plates are symmetrically and slidably arranged on the film coating round frame, the film coating pressing blocks are symmetrically and slidably arranged at the upper ends of the two film coating sliding plates, supporting springs are connected between the film coating pressing blocks and the film coating sliding plates, the film drawing units are arranged between the upper ends of the two film coating sliding plates, the driving units are symmetrically arranged at two ends of the film coating frame body along the length direction, the outer surfaces of the film coating sliding plates are rotatably, a supporting spring is connected between the base and the lower surface of one end of the tightening unit, and a preservative film roller is rotatably arranged at the upper end of the film coating supporting rod;

the film drawing unit comprises a film drawing support block, a film drawing roller, film drawing needles, a film drawing scraping rod, a limiting assembly, a film drawing driving rod, a film drawing cutter, a film drawing ejection rod and a film drawing gear, the upper ends of the two film coating sliding plates are symmetrically provided with the film drawing support block, the film drawing support block far away from the preservative film roller is rotatably provided with the film drawing roller, the surface of the film drawing roller is uniformly provided with a plurality of film drawing needles, one side of the film drawing roller is provided with the film drawing scraping rod, the film drawing roller is in fit sliding contact with one end of the film drawing scraping rod, the limiting assembly is arranged between the film drawing support block and the two ends of the film drawing roller, the film drawing ejection rod is mounted on the limiting assembly, a reset spring is connected between the film drawing support block and the film drawing ejection rod, a film drawing groove is arranged at the position, opposite to the film drawing roller, the film drawing cutter is arranged below the film drawing groove in a sliding manner, the film drawing ejection rod is opposite to the film drawing cutter, a film drawing gear is arranged between the film drawing cutter and the film drawing ejector rod, the film drawing cutter and the film drawing gear are in meshing connection through teeth, and the film drawing ejector rod and the film drawing gear are in meshing connection through teeth.

As a further scheme of the invention: two pairs of adjusting deflector rods are symmetrically and rotatably arranged at two ends of the film-coated round frame, each pair of adjusting deflector rods are symmetrically arranged, adjusting fixed pins are arranged on the adjusting deflector rods, adjusting round rods are arranged at one ends of the adjusting deflector rods, adjusting press wheels are mounted at one ends of the adjusting round rods, two pairs of adjusting slideways are symmetrically arranged on two end faces of the film-coated round frame, each pair of adjusting slideways are symmetrically arranged, the adjusting round rods are in one-to-one correspondence with the adjusting slideways and are in sliding connection with the adjusting slideways, a plurality of adjusting pin holes are uniformly arranged at positions below the adjusting slideways, the adjusting fixed pins are in matched connection with the adjusting pin holes, adjusting brackets are symmetrically and rotatably arranged on the inner walls of the two film-coated sliding plates, adjusting springs are connected between the film-coated sliding plates and the other ends of the adjusting brackets, the adjusting press wheels, support and be connected with supporting spring between spout and the support slider, to being provided with the support round bar between the support slider, slidable mounting has the backup pad on the support round bar, and it is provided with the support balladeur train to slide between the backup pad on the adjacent support round bar.

As a further scheme of the invention: the capsule slide is the arc structure, and the distance of opening between two capsule slide upper ends equals with the distance of opening between the lower extreme.

As a further scheme of the invention: the drive unit comprises a drive motor, a drive crankshaft, a drive sliding plate, a drive rack, a drive fluted disc, a drive slide bar and a drive connecting rod, wherein the drive motor is symmetrically arranged below two ends of the film coating frame body along the length direction of the film coating frame body, the drive crankshaft is arranged above the drive motor, the output end of the drive motor is connected with the drive crankshaft through belt transmission, the drive sliding plate is symmetrically arranged above two ends of the film coating frame body along the length direction of the film coating frame body in a sliding mode, the drive rack is symmetrically arranged on two sides of the drive sliding plate, the drive fluted disc is symmetrically arranged on two sides of the drive sliding plate and is connected with the drive fluted disc in a meshing mode, the drive slide bar is symmetrically arranged at two ends of the film coating sliding plate along the length direction of the.

As a further scheme of the invention: the mounting groove has been seted up to diolame branch upper end, and the mounting groove upper end is provided with fastening bolt through screw-thread fit, and the fastening briquetting is installed to the fastening bolt lower extreme, and the cooperation contacts between plastic wrap roller one end and the fastening briquetting.

As a further scheme of the invention: the tightening unit comprises a tightening frame and a tightening roller, the tightening frame is rotatably arranged between the lower ends of the film-coated supporting rods, a plurality of tightening rollers are arranged in the tightening frame along the length direction of the tightening frame through springs, and the tightening rollers are rubber rollers of hollow structures and are filled with air.

As a further scheme of the invention: the limiting assembly comprises a limiting ratchet wheel, a limiting rotating ring and a limiting pawl, the limiting ratchet wheel and the limiting rotating ring are symmetrically arranged at two ends of the film drawing roller, the limiting ratchet wheel is located inside the limiting rotating ring and fixedly connected with the limiting ratchet wheel, the film drawing roller is rotatably connected with the limiting rotating ring, the inner surface of the limiting rotating ring is uniformly rotatably provided with a plurality of limiting rotating rings along the circumferential direction of the inner surface of the limiting rotating ring, and a limiting spring is connected between the limiting rotating rings, and the limiting ratchet wheel is in matched contact with the limiting rotating ring.

Compared with the prior art, the invention has the following advantages:

can solve the following problems when the current vegetable with long strip shape is wrapped by the preservative film:

2. when the existing preservative film wrapping equipment is used for wrapping vegetables with preservative films, the wrapping amount of the preservative films is difficult to control according to the thicknesses of different types of vegetables every time, so that the vegetables with different thicknesses are wrapped by the preservative films with different lengths, the wrapping effect of some vegetables is poor, the preservation effect of the vegetables is influenced, and the waste of the preservative films is also caused;

3. when the device is used for wrapping the preservative film on the long-strip-shaped vegetable, the pulling and grinding unit can pull out a new section of preservative film to wrap the next vegetable after cutting off the previous section of preservative film each time, so that the problems of time and labor waste caused by manual film pulling are effectively solved, the vegetable preservative film wrapping efficiency can be effectively improved, the supporting plate arranged in the film wrapping device can play a role of supporting the vegetable to prevent the preservative film from being pulled and broken by the gravity of the vegetable, and the position of the supporting plate can be adjusted up and down, so that the amount of the pulled out preservative film can be controlled according to the thickness of the vegetable, the vegetable wrapping effect is effectively improved, and the use of the preservative film is saved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a flow chart of the operation of the present invention;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic view of the front cross-sectional structure of the present invention;

FIG. 4 is a schematic view of the internal three-dimensional structure of the envelope round frame of the present invention;

FIG. 5 is a schematic perspective view of a drive unit of the present invention;

FIG. 6 is a schematic cross-sectional view taken at A of FIG. 3 according to the present invention;

FIG. 7 is a schematic cross-sectional view of a stop assembly of the present invention;

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further explained with reference to fig. 1 to 7.

The cold-chain logistics fresh-keeping transportation method uses cold-chain logistics fresh-keeping transportation equipment, the cold-chain logistics fresh-keeping transportation equipment comprises a base 1 and a film coating device 2, and the specific method for wrapping long-strip-shaped vegetables with fresh-keeping films by adopting the cold-chain logistics fresh-keeping transportation equipment is as follows:

step two, vegetable coating operation: the preparation of the strip-shaped vegetables to be wrapped by the preservative film is completed, the wrapping device 2 is started, the vegetables prepared in the step one are placed into the wrapping device 2 one by one to be wrapped by the preservative film, the vegetables wrapped by the preservative film fall to the tightening unit 27, and the tightening unit 27 tightens the preservative film wrapped on the outer surfaces of the vegetables;

the upper surface of the base 1 is provided with a film coating device 2; wherein:

the film coating device 2 comprises a film coating frame body 20, film coating round frames 21, film coating sliding plates 22, film coating pressing blocks 23, film drawing units 24, driving units 25, film coating supporting rods 26, tightening units 27 and preservative film rollers 28, wherein the upper surface of a base 1 is provided with the film coating frame body 20, the middle of the film coating frame body 20 is fixedly provided with the film coating round frames 21, the film coating sliding plates 22 are symmetrically and slidably arranged on the film coating round frames 21, the upper ends of the two film coating sliding plates 22 are symmetrically and slidably provided with the film coating pressing blocks 23, supporting springs are connected between the two film coating pressing blocks, the film drawing units 24 are arranged between the upper ends of the two film coating sliding plates 22, the driving units 25 are symmetrically arranged at two ends of the film coating frame body 20 along the length direction, the outer surfaces of the film coating sliding plates 22 are rotatably connected with the driving units 25, the film coating supporting rods 26 are, a supporting spring is connected between the base 1 and the lower surface of one end of the tightening unit 27, and a preservative film roller 28 is rotatably arranged at the upper end of the film-coating supporting rod 26;

during the specific work, firstly, the preservative film is arranged at the preservative film roller 28, then one end of the preservative film is connected with the film pulling unit 24 on the film coating sliding plate 22, then the driving unit 25 is started to drive the two film coating sliding plates 22 to relatively slide on the film coating round frame 21, so that the film pulling unit 24 can realize continuous opening and closing actions, when the film pulling unit 24 is opened, the vegetables are placed on the preservative film pulled out between the film pulling units 24, due to the gravity action of the vegetables, the preservative film can be pressed down into the film coating round frame 21, then the film pulling unit 24 is closed, so that the preservative film wraps the vegetables, the two ends of the preservative film are butted and attached by the film coating pressing block 23, the preservative film is cut off after the film pulling unit 24 is pulled, then the film pulling unit 24 is opened again, a preservative film is pulled out again, the preservative film wrapping operation can be continuously carried out on the vegetables by repeating the above process, and the vegetables wrapped by the preservative film fall on the tightening unit 27, the vegetables that have wrapped up the plastic wrap can roll on tightening unit 27 to make the plastic wrap on its surface can be attached on the vegetables surface more compactly, keep fresh with guaranteeing that vegetables can be better.

Two pairs of adjusting deflector rods 210 are symmetrically and rotatably arranged at two ends of the film-coated round frame 21, each pair of adjusting deflector rods 210 is symmetrical in position, an adjusting fixed pin 211 is arranged on each adjusting deflector rod 210, an adjusting round rod 212 is arranged at one end of each adjusting deflector rod 210, an adjusting press wheel 213 is arranged at one end of each adjusting round rod 212, two pairs of adjusting slideways 214 are symmetrically arranged on two end surfaces of the film-coated round frame 21, each pair of adjusting slideways 214 are symmetrical in position, the adjusting round rods 212 correspond to the adjusting slideways 214 one by one and are in sliding connection with the adjusting slideways, a plurality of adjusting pin holes 215 are uniformly arranged at positions below the adjusting slideways 214, the adjusting fixed pins 211 are in matched connection with the adjusting pin holes 215, adjusting brackets 216 are symmetrically and rotatably arranged on the inner walls of the two film-coated sliding plates 22, adjusting springs are connected between the other ends of the film-coated sliding plates 22 and, support sliding blocks 218 are symmetrically arranged in each pair of support sliding grooves 217 in a sliding mode, a support spring is connected between each pair of support sliding grooves 217 and each support sliding block 218, a support round rod 219 is arranged between each pair of support sliding blocks 218, a support plate 220 is arranged on each support round rod 219 in a sliding mode, and a support sliding frame 221 is arranged between the support plates 220 on the adjacent support round rods 219 in a sliding mode;

during the specific work, due to the change of the vegetable types, when the preservative film is wrapped on one type of vegetable, according to the thickness of the vegetable, the adjusting deflector rod 210 is rotated to enable the adjusting circular rod 212 to slide in the adjusting slide way 214, so that the position of the adjusting pinch roller 213 in the film wrapping circular frame 21 is changed, so that the position of the adjusting bracket 216 is changed due to the supporting force of the adjusting spring, so that the adjusting bracket 216 moves up and down in the film wrapping circular frame 21, after the position of the adjusting bracket 216 moves to a proper position, the adjusting fixing pin 211 is inserted into the adjusting pin hole 215 to fix the position of the adjusting deflector rod 210, so that the depth of the vegetable entering the film wrapping circular frame 21 is changed, the length of the pulled preservative film is controlled, so that the better wrapping effect of the vegetable is achieved, the using amount of the preservative film can be saved, the supporting plate 220 on the adjusting bracket 216 can be pressed downwards according to the gravity of the, therefore, the supporting slide block 218 can move in the supporting chute 217, and under the action of the supporting spring, the supporting plate 220 supports the vegetables according to the shapes of the vegetables, so as to prevent the vegetables from rolling and affecting the wrapping of the preservative film.

The two envelope sliding plates 22 are arc-shaped, and the opening distance between the upper ends and the opening distance between the lower ends of the two envelope sliding plates 22 are equal; during specific work, the opening and closing of the two coating sliding plates 22 can facilitate the entering of vegetables and the falling of the vegetables wrapped by the preservative film, so that the coating operation of the vegetables can be continuously and smoothly carried out.

The film drawing unit 24 comprises a film drawing support block 240, a film drawing roller 241, film drawing needles 242, a film drawing scraping rod 243, a limiting component 244, a film drawing driving rod 245, a film drawing cutter 246, a film drawing ejector rod 247 and a film drawing gear 248, the upper ends of the two envelope sliding plates 22 are symmetrically provided with the film drawing support blocks 240, the film drawing roller 241 is rotatably arranged on the film drawing support block 240 far away from the preservative film roller 28, the surface of the film drawing roller 241 is uniformly provided with a plurality of film drawing needles 242, one side of the film drawing roller 241 is provided with the film drawing scraping rod 243, the film drawing roller 241 is in contact with one end of the film drawing scraping rod 243 in a fit and sliding manner, the limiting component 244 is arranged between the film drawing support block 240 and the two ends of the film drawing roller 241, the film drawing driving rod 245 is arranged on the limiting component 244, a return spring is connected between the film drawing support block 240 and the film drawing driving rod 245, a film drawing groove is arranged at the position, which is opposite to the film drawing support block 240 close to the preservative film roller 28, and the film, the film drawing shift lever 245 is opposite to the film drawing cutter 246, a film drawing ejector rod 247 is arranged below the film drawing cutter 246 in a sliding mode, a film drawing gear 248 is arranged between the film drawing cutter 246 and the film drawing ejector rod 247, the film drawing cutter 246 is meshed with the film drawing gear 248 through teeth, and the film drawing ejector rod 247 is meshed with the film drawing gear 248 through teeth;

when the two film wrapping sliding plates 22 are controlled to approach each other by the driving unit 25, the two film pulling support blocks 240 are gradually attached together, in the process, the film pulling push rod 247 is pushed by the film pulling support block 240 far away from the plastic wrap roller 28, so that the film pulling push rod 247 drives the film pulling gear 248 to rotate, the film pulling cutter 246 slides out from the film pulling support block 240 near the plastic wrap roller 28 and enters into the film pulling support block 240 far away from the plastic wrap roller 28, so that the plastic wrap can be cut while the film pulling rod 245 is under the action of the limiting component 244, the film pulling roller 241 drives the film pulling needle 242 to rotate in the film pulling groove to pull the cut other end connected with the plastic wrap roller 28 into the film pulling support block 240 far away from the plastic wrap roller 28, and thus the purpose of cutting a section of the plastic wrap of vegetables before cutting and pulling a section of a new plastic wrap can be achieved, and the plastic wrap cut on the film pulling needle 242 rotates along with the film pulling roller 241, can be scraped by the film-pulling scraping rod 243, so that the influence of the residual waste film on the subsequent operation of wrapping the preservative film by the vegetables is avoided.

The limiting assembly 244 comprises a limiting ratchet wheel 2440, a limiting rotating ring 2441 and a limiting pawl 2442, the limiting ratchet wheel 2440 and the limiting rotating ring 2441 are symmetrically arranged at two ends of the film pulling roller 241, the limiting ratchet wheel 2440 is positioned inside the limiting rotating ring 2441, the film pulling roller 241 is fixedly connected with the limiting ratchet wheel 2440, the film pulling roller 241 is rotatably connected with the limiting rotating ring 2441, a plurality of limiting rotating rings 2441 are uniformly and rotatably arranged on the inner surface of the limiting rotating ring 2441 along the circumferential direction of the inner surface, limiting springs are connected between the limiting rotating rings 2441, and the limiting ratchet wheel 2440 is in matched contact with the limiting rotating ring 2441;

when the film drawing mechanism is operated specifically, when the film drawing deflector rod 245 is pushed by the film drawing cutter 246, the limiting rotating ring 2441 is driven to rotate, so that the limiting pawl 2442 drives the limiting ratchet wheel 2440 to rotate together, then the film drawing deflector rod 245 resets under the action of a reset spring, at the moment, the limiting pawl 2442 can not drive the limiting ratchet wheel 2440 to rotate together, the unidirectional rotation of the film drawing roller 241 can be realized, and the film drawing roller 241 can drive the film drawing needle 242 to rotate in the film drawing groove to draw the other end connected with the preservative film roller 28 after being cut off into the film drawing support block 240 far away from the preservative film roller 28.

The driving unit 25 comprises a driving motor 250, a driving crankshaft 251, a driving slide plate 252, a driving rack 253, a driving fluted disc 254, a driving slide bar 255 and a driving connecting rod 256, the film-coating frame 20 is symmetrically provided with driving motors 250 below two ends in the length direction, driving crankshafts 251 are arranged above the driving motors 250, the output ends of the driving motors 250 are in transmission connection with the driving crankshafts 251 through belts, driving sliding plates 252 are symmetrically arranged above two ends in the length direction of the film-coating frame 20 in a sliding manner, driving racks 253 are symmetrically arranged on two sides of the driving sliding plates 252, driving gear discs 254 are symmetrically arranged on two sides of the driving sliding plates 252, the driving racks 253 are in meshed connection with the driving gear discs 254, driving slide rods 255 are symmetrically arranged at two ends in the length direction of the film-coating sliding plate 22, the driving gear discs 254 are in sliding connection with the driving slide rods 255, and the driving crankshafts 251 are movably connected with the lower ends of the driving;

during specific work, the rotation of the driving motor 250 drives the driving crankshaft 251 to rotate through belt transmission, the rotation of the driving crankshaft 251 drives the driving sliding plate 252 to move up and down in a reciprocating manner through the driving connecting rod 256, so that the driving rack 253 moves up and down in a reciprocating manner to drive the two driving fluted discs 254 to perform reciprocating and opposite rotation, and then the two envelope sliding plates 22 are driven to perform opposite reciprocating sliding on the envelope round frame 21 through the driving sliding rod 255, so that the opening and closing actions of the envelope pulling unit 24 can be realized.

The upper end of the film-coating supporting rod 26 is provided with an installation groove 260, the upper end of the installation groove 260 is provided with a fastening bolt 261 in a threaded fit manner, the lower end of the fastening bolt 261 is provided with a fastening pressing block 262, and one end of the preservative film roller 28 is in fit contact with the fastening pressing block 262; during specific work, after the preservative film roller 28 is installed in the installation groove 260, the fastening bolt 261 is rotated to control the fastening pressing block 262 to be close to or far away from the preservative film roller 28, so that the damping sense can be caused in the rotating process of the preservative film roller 28, the occurrence of the waste problem caused by the fact that the preservative film is pulled out excessively can be prevented, and the preservative film can be prevented from being pulled to be damaged and affecting the preservation effect.

The tightening unit 27 comprises a tightening frame 270 and tightening rollers 271, the tightening frame 270 is rotatably arranged between the lower ends of the film-coated supporting rods 26, a plurality of tightening rollers 271 are arranged in the tightening frame 270 along the length direction of the tightening frame through spiral springs, and the tightening rollers 271 are rubber rollers with hollow structures and are filled with air; when the vegetables wrapped with the preservative film fall on the tightening rollers 271, the tightening rollers 271 are of hollow structures, the rubber rollers and the inside of the tightening rollers 271 are filled with air, damage to the vegetables can be prevented, the tightening frame 270 and the tightening rollers 271 are connected through the clockwork spring, the rolling speed can be reduced in the rolling process of the vegetables, the vegetables are in the rolling process, the preservative film on the surface of the vegetables is rolled and attached to the surface of the vegetables more tightly, and wrapping performance of the preservative film is improved.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The cold-chain logistics fresh-keeping transportation method uses cold-chain logistics fresh-keeping transportation equipment, and the cold-chain logistics fresh-keeping transportation equipment comprises a base (1) and a film coating device (2), and is characterized in that: the specific method for wrapping the long-strip-shaped vegetables by the preservative film by adopting the cold-chain logistics preservation transportation equipment is as follows:

step two, vegetable coating operation: the preparation of the strip-shaped vegetables needing to be wrapped by the preservative film is completed, the wrapping device (2) is started, then the vegetables prepared in the step one are placed into the wrapping device (2) one by one to be wrapped by the preservative film, the vegetables wrapped by the preservative film fall to the tightening unit (27), and the tightening unit (27) tightens the preservative film wrapped on the outer surfaces of the vegetables;

the upper surface of the base (1) is provided with a film coating device (2); wherein:

the film coating device (2) comprises a film coating frame body (20), film coating round frames (21), film coating sliding plates (22), film coating pressing blocks (23), a film drawing unit (24), a driving unit (25), film coating supporting rods (26), a tightening unit (27) and a preservative film roller (28), wherein the film coating frame body (20) is arranged on the upper surface of the base (1), the film coating round frames (21) are fixedly arranged in the middle of the film coating frame body (20), the film coating sliding plates (22) are symmetrically and slidably arranged on the film coating round frames (21), the film coating pressing blocks (23) are symmetrically and slidably arranged at the upper ends of the two film coating sliding plates (22), a supporting spring is connected between the two film coating pressing blocks, the film drawing unit (24) is arranged between the upper ends of the two film coating sliding plates (22), the driving units (25) are symmetrically arranged at the two ends of the film coating frame body (20), the upper surface of the base (1) is symmetrically provided with film-coating supporting rods (26) at one side of the film-coating frame body (20), a tightening unit (27) is rotatably arranged between the lower ends of the film-coating supporting rods (26), a supporting spring is connected between the base (1) and the lower surface of one end of the tightening unit (27), and the upper end of the film-coating supporting rod (26) is rotatably provided with a preservative film roller (28);

the film drawing unit (24) comprises a film drawing support block (240), film drawing rollers (241), film drawing needles (242), a film drawing scraping rod (243), a limiting assembly (244), a film drawing driving rod (245), a film drawing cutter (246), a film drawing ejection rod (247) and a film drawing gear (248), the upper ends of the two envelope sliding plates (22) are symmetrically provided with the film drawing support blocks (240), the film drawing support blocks (240) far away from the preservative film roller (28) are rotatably provided with the film drawing rollers (241), the surface of each film drawing roller (241) is uniformly provided with a plurality of film drawing needles (242), one side of each film drawing roller (241) is provided with the film drawing scraping rod (243), the film drawing rollers (241) are in fit sliding contact with one end of the film drawing scraping rod (243), the limiting assemblies (244) are arranged between the film drawing support blocks (240) and the two ends of the film drawing rollers (241), the film drawing driving rods (245) are installed on the limiting assemblies (244), and a reset spring is connected between the film drawing support blocks (240) and the film drawing driving rod (245, a film drawing groove is formed in the position, opposite to the film drawing roller (241), of a film drawing support block (240) close to the preservative film roller (28), a film drawing cutter (246) is arranged below the film drawing groove in a sliding mode, a film drawing deflector rod (245) is opposite to the film drawing cutter (246), a film drawing ejector rod (247) is arranged below the film drawing cutter (246) in a sliding mode, a film drawing gear (248) is arranged between the film drawing cutter (246) and the film drawing ejector rod (247), the film drawing cutter (246) is connected with the film drawing gear (248) through tooth meshing, and the film drawing ejector rod (247) is connected with the film drawing gear (248) through tooth meshing.

2. The cold-chain logistics fresh-keeping transportation method according to claim 1, characterized in that: two ends of the film-coating circular frame (21) are symmetrically and rotatably provided with two pairs of adjusting shift levers (210), each pair of adjusting shift levers (210) are symmetrically arranged, adjusting fixed pins (211) are arranged on the adjusting shift levers (210), one end of each adjusting shift lever (210) is provided with an adjusting circular rod (212), one end of each adjusting circular rod (212) is provided with an adjusting pinch roller (213), two pairs of adjusting slideways (214) are symmetrically arranged on two end faces of the film-coating circular frame (21), each pair of adjusting slideways (214) are symmetrically arranged, the adjusting circular rods (212) are in one-to-one correspondence with the adjusting slideways (214) and are in sliding connection with the adjusting slideways, a plurality of adjusting pin holes (215) are uniformly arranged at positions below the adjusting slideways (214), the adjusting fixed pins (211) are in matched connection with the adjusting pin holes (215), adjusting supports (216) are symmetrically and rotatably arranged on the inner walls of the two film-, adjust pinch roller (213) and adjust support (216) contact connection, it has a plurality of pairs of supporting sliding groove (217) to prolong its even vertical seting up of width direction on support (216) to adjust, and every pair is provided with support slider (218) to supporting sliding groove (217) internal symmetry slip, it is connected with supporting spring to support between sliding groove (217) and support slider (218), every pair is provided with between supporting slider (218) and supports round bar (219), slidable mounting has backup pad (220) on supporting round bar (219), it is provided with support balladeur train (221) to slide between backup pad (220) on adjacent support round bar (219).

3. The cold-chain logistics fresh-keeping transportation method according to claim 1, characterized in that: the film-coating sliding plates (22) are of arc-shaped structures, and the distance between the upper ends of the two film-coating sliding plates (22) is equal to the distance between the lower ends of the two film-coating sliding plates.

4. The cold-chain logistics fresh-keeping transportation method according to claim 1, characterized in that: the driving unit (25) comprises a driving motor (250), a driving crankshaft (251), a driving sliding plate (252), a driving rack (253), a driving fluted disc (254), a driving sliding rod (255) and a driving connecting rod (256), wherein the driving motor (250) is symmetrically arranged below two ends of the film-coating frame body (20) along the length direction of the film-coating frame body, the driving crankshaft (251) is arranged above the driving motor (250), the output end of the driving motor (250) is connected with the driving crankshaft (251) through belt transmission, the driving sliding plates (252) are symmetrically arranged above two ends of the film-coating frame body (20) along the length direction of the film-coating frame body in a sliding manner, the driving racks (253) are symmetrically arranged on two sides of the driving sliding plate (252), the driving fluted disc (254) is symmetrically arranged on two sides of the driving sliding plate (252), the driving racks (253) are meshed with the driving fluted disc (254), and the driving, the driving fluted disc (254) is connected with the driving slide bar (255) in a sliding way, and the driving crankshaft (251) is movably connected with the lower end of the driving slide plate (252) through a driving connecting rod (256).

5. The cold-chain logistics fresh-keeping transportation method according to claim 1, characterized in that: mounting groove (260) have been seted up to diolame branch (26) upper end, and mounting groove (260) upper end is provided with fastening bolt (261) through screw-thread fit, and fastening briquetting (262) are installed to fastening bolt (261) lower extreme, and the cooperation contacts between plastic wrap roller (28) one end and fastening briquetting (262).

6. The cold-chain logistics fresh-keeping transportation method according to claim 1, characterized in that: the tightening unit (27) comprises a tightening frame (270) and tightening rollers (271), the tightening frame (270) is rotatably arranged between the lower ends of the film-coated supporting rods (26), a plurality of tightening rollers (271) are arranged in the tightening frame (270) along the length direction of the tightening frame through springs, and the tightening rollers (271) are rubber rollers of a hollow structure and are filled with air.

7. The cold-chain logistics fresh-keeping transportation method according to claim 1, characterized in that: spacing subassembly (244) include spacing ratchet (2440), spacing swivel (2441) and spacing pawl (2442), draw membrane roller (241) both ends symmetry to be provided with spacing ratchet (2440) and spacing swivel (2441), spacing ratchet (2440) are located inside spacing swivel (2441), and draw membrane roller (241) and spacing ratchet (2440) fixed connection, draw membrane roller (241) and rotate with spacing swivel (2441) and be connected, spacing swivel (2441) internal surface evenly rotates along its circumferential direction and is provided with a plurality of spacing swivel (2441) and is connected with spacing spring between the two, spacing ratchet (2440) and spacing swivel (2441) cooperation contact.