CN-121734759-B - Thermoplastic film packaging machine for packaging fruit juice

CN121734759BCN 121734759 BCN121734759 BCN 121734759BCN-121734759-B

Abstract

The invention belongs to the technical field of thermoplastic film packaging machines, in particular to a thermoplastic film packaging machine for packaging fruit juice, which comprises a shrinkage furnace, wherein a circulation system is arranged in the shrinkage furnace and drives gas in the shrinkage furnace to circularly flow and heat the gas, the circulation system blows hot gas from the lower side to the bottom surface of a coating part, and the left end and the right end of the shrinkage furnace are respectively provided with a gas-tight structure; according to the invention, the wrapping member can be transported to move rightwards through the shrinkage furnace, so that the wrapping member is changed into a finished product through a heat shrinkage environment, hot air flow in the shrinkage furnace can circulate through the circulation system, the hot air flow is recycled, the heat loss is reduced to the greatest extent, the heat utilization rate is high, the loss channel of the hot air flow can be reduced through the air-closing structure, the heat loss is further reduced, the heat utilization rate is higher, the loss channel of the hot air flow can be reduced again through the elastic membrane on the air-closing structure, the heat loss is reduced again, and the heat utilization rate is obviously improved.

Inventors

PAN CUIPING
Si Lang De Xi
TAO LIAN
LIU YING
WANG YIYUE
LI KE
YUAN HUAIYU
LI HUAJIA
Zerindoji
LUO WEITING

Assignees

四川省农业科学院农产品加工研究所(四川省农业科学院食物与营养健康研究所)

Dates

Publication Date: 20260512
Application Date: 20260227

Claims (10)

1. The thermoplastic film packaging machine for packaging the fruit juice comprises a shrinkage furnace, and is characterized in that a circulation system is arranged in the shrinkage furnace and drives gas in the shrinkage furnace to circularly flow and heat the gas, the circulation system blows hot gas from the lower direction to the bottom surface of a coating piece, the left end and the right end of the shrinkage furnace are both provided with closed gas structures, partial air passages are blocked when the coating piece moves in the closed gas structures, two side blowing mechanisms and a top blowing mechanism are arranged in the shrinkage furnace, the two side blowing mechanisms are respectively positioned at the front side and the rear side of the top blowing mechanism, the two side blowing mechanisms respectively abut against the coating piece from the front side and the rear side and blow the hot gas to the front side and the rear side of the coating piece, and the top blowing mechanism abuts against the top surface of the coating piece from the upper side and blows the hot gas to the top surface of the coating piece; the shrinkage furnace comprises a supporting shell, wherein the top surface of the supporting shell is fixedly connected with a square tube outer shell, a square tube inner shell is coaxially inserted in the square tube outer shell, a circulating system is arranged in the square tube inner shell, two outlet boxes are fixedly arranged at the left end and the right end of the supporting shell, a grid conveyer belt is arranged between the two outlet boxes, and the bottom walls of the square tube outer shell and the square tube inner shell penetrate through the grid conveyer belt; The circulating system comprises an outer square pipe, the outer square pipe is coaxially inserted into an inner square pipe shell, a reflux interlayer is formed between the inner wall of the inner square pipe shell and the outer surface of the outer square pipe, an inner square pipe is coaxially inserted into the outer square pipe, a buffer air chamber is formed between the outer surface of the inner square pipe and the inner wall of the outer square pipe, the bottom walls of the outer square pipe and the inner square pipe penetrate through a grid conveying belt, a spray hole is formed in the bottom surface of the inner square pipe cavity, the spray hole is communicated with the buffer air chamber, the spray hole blows hot air to the bottom surface of a cladding piece, a side blowing mechanism and a top blowing mechanism are both arranged in the inner square pipe shell, two fixing holes are symmetrically formed in the top surfaces of the square pipe shell and the inner square pipe shell and are positioned at the right end of the square pipe shell, two circulating holes are formed in the top surface of the outer square pipe, and are respectively aligned with the two fixing holes on the square pipe shell, the inside of two fixed holes on the square tube outer shell is fixedly inserted with a power motor, the bottom end of the power motor is inserted into the fixed hole on the square tube inner shell, the power motor plugs the fixed hole, the bottom end of the output shaft on the power motor is fixedly sleeved with an impeller which is positioned in the circulating hole, the outside movable sleeve of the output shaft on the power motor is provided with a vortex-shaped heating wire positioned above the impeller, the vortex-shaped heating wire is mounted on the top surface of the inner square tube of the partition, the top surface of the inner square tube of the partition is provided with an air outlet positioned at the right end of the inner square tube of the partition, the air outlet communicates the inner square tube inner cavity of the partition with a buffer air chamber, the front and rear surfaces of the inner square tube inner cavities of the partition and the inner square tube of the partition are respectively provided with a positioning hole positioned at the left end of the inner square tube of the partition, the same backflow pipe is fixedly inserted into the two positioning holes on the same side wall of the inner square tube of the partition, the return pipe will cut off the inner square tube cavity is communicated with the inner cavity of the reflux interlayer.
2. The thermoplastic film packaging machine for fruit juice packaging according to claim 1, wherein a heat-insulating interlayer is formed between the inner wall of the square tube outer shell and the outer surface of the square tube inner shell, a power mechanism for driving the grid conveyor belt to rotate is arranged on the drawing box, a control box is fixedly arranged at the right end of the top surface of the square tube outer shell and is in signal transmission connection with an external control panel, and the control box is electrically connected with the power mechanism.
3. The thermoplastic film packaging machine for fruit juice packaging according to claim 2, wherein the left ends of the square tube outer shell, the square tube inner shell, the partition outer square tube and the partition inner square tube are fixed on one square frame through bolts, the right ends of the square tube outer shell, the square tube inner shell, the partition outer square tube and the partition inner square tube are fixed on the other square frame through bolts, and the square frame inner wall is flush with the partition inner square tube inner wall in the same specification.
4. The thermoplastic film packaging machine for fruit juice packages according to claim 3, wherein the air-closing structure comprises a fixed rail, the fixed rail is fixedly connected to the surface of the square tube shell, which is far away from the square tube shell, the inner wall of the square tube is flush with the inner wall of the fixed rail, the fixed rail is in a concave frame shape and has a downward opening, the end surface of the fixed rail is in an L shape, the outer part of the fixed rail is buckled with a buckling sliding rail, the buckling sliding rail is in a concave frame shape and has a downward opening, an air-closing plate is fixedly connected to the inner side wall of the buckling sliding rail, the air-closing plate blocks the opening of the square tube, the bottom end of the air-closing plate is suspended above the top surface of the grid conveyor belt, the air-closing plate is fixedly spliced with an air-closing pipe positioned in the middle of the bottom end of the square tube shell, the air-closing pipe bottom end is in an opening shape and is matched with the wrapping piece, the air-closing pipe is fixedly connected with two guide plates on the end surface of the air-closing plate, the free ends of the two guide plates are respectively obliquely extended forwards and backwards, and diagonal braces are fixedly connected between the top surface of the air-closing plate, which is far away from the square tube shell.
5. The thermoplastic film packaging machine for fruit juice packaging according to claim 4, wherein three mounting holes are formed in the front side wall and the rear side wall of the air closing pipe at equal intervals, the bottom ends of the mounting holes are in an opening shape, the three mounting holes in the front side wall of the air closing pipe are in one-to-one correspondence with the three mounting holes in the rear side wall of the air closing pipe, the same elastic film is inserted into the corresponding two mounting holes in the front side wall and the rear side wall of the air closing pipe in an interference fit manner, a perforation is formed in the bottom surface of the elastic film, the specification of the perforation is slightly smaller than that of the wrapping piece, and limit strips are fixedly connected to the front end and the rear end of the elastic film.
6. The thermoplastic film packaging machine for fruit juice packaging according to claim 5, wherein the side blowing mechanism comprises two abutting plates, the two abutting plates are symmetrically arranged inside the square tube in the partition, the abutting telescopic rods positioned at the centers of the two abutting plates are fixedly connected to two surfaces of the two abutting plates, which are far away from each other, the end parts of the extending rods inside the abutting telescopic rods are fixedly connected with the surfaces of the abutting plates, one ends of the abutting telescopic rods, which are far away from the abutting plates, extend to the outside of the square tube shell, the other ends of the abutting telescopic rods are fixedly inserted into the side walls of the square tube shell, the square tube inner shell, the square tube outside the partition and the square tube inside the partition, the four corners of the abutting plates, which are connected with the side surfaces of the abutting telescopic rods, are fixedly connected with guiding telescopic rods, the end parts of the extending rods inside the guiding telescopic rods are fixedly connected with the surfaces of the abutting plates, the other end of the guiding telescopic rod is fixedly inserted on the side walls of the inner square tube and the outer square tube of the partition, the right ends of the two abutting plates are fixedly connected with a rectangular shell, the left end face of the rectangular shell is equidistantly provided with a plurality of air distribution holes, the air distribution holes are positioned on one side of the abutting plates, which is far away from the abutting telescopic rod, of the rectangular shell, a constant pressure hole is formed in the side face of the rectangular shell, which is close to the abutting telescopic rod, an elastic tube is fixedly communicated with the side face of the rectangular shell, the elastic tube is communicated with the constant pressure hole, the end part of the elastic tube, which is far away from the rectangular shell, is fixedly connected with the inner wall of the inner square tube of the partition, the front side face and the rear side face of the inner square tube of the partition are respectively provided with a transfer hole positioned at the right end of the elastic tube, the transfer hole is communicated with a buffer air chamber, the left ends of the two abutting plates are fixedly connected with a reinforcing plate, one face of the reinforcing plate, which faces the inner wall of the inner square tube of the partition, the elastic compensating tube is fixedly connected with the inner wall of the inner square tube of the partition, a plurality of gas distribution pipes are arranged between the reinforcing plate and the rectangular shell, the gas distribution pipes are respectively in one-to-one correspondence with a plurality of gas distribution holes, the corresponding gas distribution pipes are communicated with the gas distribution holes, a plurality of gas blowing holes are formed in the gas distribution pipes, and the distance between two adjacent gas blowing holes is gradually reduced from right to left.
7. The thermoplastic film packaging machine for fruit juice packaging according to claim 6, wherein the outer portion of the gas distributing pipe is slidably sleeved with an outer sleeve, the right end of the outer sleeve is fixedly connected to the left end face of the rectangular shell, the left end of the outer sleeve is fixedly connected to the right end face of the reinforcing plate, a gas distribution window is formed in the surface, far away from the abutting plate, of the outer sleeve, and the gas distribution window is matched with the gas blowing hole.
8. The thermoplastic film packaging machine for fruit juice packages according to claim 7, wherein the square tube housing is fixedly inserted with first distance measuring probes on both front and rear sides thereof, one ends of the first distance measuring probes are exposed outside the square tube housing, and the other ends of the first distance measuring probes extend into the interior of the square tube in the partition and are aligned with the abutting plates.
9. The thermoplastic film packaging machine for packaging fruit juice according to claim 8, wherein the top blowing mechanism comprises an electric telescopic rod, the electric telescopic rod is fixedly inserted in the center of the top surface of the square tube shell, the bottom end of the electric telescopic rod extends downwards to the inside of the square tube in the partition, the bottom end of the extending rod in the electric telescopic rod is fixedly connected with a proximity strip, the right end of the proximity strip is fixedly connected with a linkage plate, the linkage plate is positioned on the right side of the side blowing mechanism, a positioning groove is formed in the top surface of the linkage plate, a first telescopic tube is fixedly connected to the top surface of the linkage plate and communicated with the positioning groove, the top end of the first telescopic tube is fixedly connected to the top surface of the square tube in the partition and communicated with the air outlet, the left end of the proximity strip is fixedly connected with a linkage block, the linkage block is positioned on the left side of the side blowing mechanism, a plurality of top blowing tubes are equidistantly arranged between the linkage plate and the linkage block, the right end of the top blowing tubes are communicated with the positioning groove, a plurality of through holes facing right directions are formed in the surface of the top blowing tubes, and the distance between two adjacent right through holes gradually decreases from the left ends; The top surface of square pipe shell is fixed to peg graft and is had the second range finding probe, and the bottom of second range finding probe downwardly extending is cut off the inside of interior side pipe and is directed to the top surface that is close the strip.
10. The thermoplastic film packaging machine for fruit juice packages according to claim 9, wherein a plurality of cylindrical grooves are formed in the right side surface of the linkage block at equal intervals, a plurality of rectangular grooves are formed in the left side surface of the linkage block at equal intervals, the plurality of rectangular grooves correspond to the plurality of cylindrical grooves one by one, the corresponding cylindrical grooves and the rectangular grooves are mutually communicated, the left end of the top blowing pipe is movably inserted into the cylindrical grooves and extends into the rectangular grooves and is fixedly connected with the rectangular blocks, the rectangular blocks are inserted into the rectangular grooves, the right end of the top blowing pipe is fixedly connected with a hollow pointed cone, vent holes are formed in the hollow pointed cone, the bottom surface of the inner cavity of the positioning groove is fixedly connected with a limiting stop bar, a plurality of inserting holes are formed in the left side surface of the linkage plate and in equal distances in the limiting stop bar, the inserting holes in the left side surface of the linkage plate correspond to the inserting holes in the left side surface of the linkage plate one by one, the positioning grooves are separated into a left chamber and a right chamber by the limiting stop bar, the right end of the top blowing pipe penetrates through the hollow pointed cone and the hollow pointed cone, and the limiting stop bar are positioned in the limiting stop bar.

Description

Thermoplastic film packaging machine for packaging fruit juice Technical Field The invention relates to the technical field of thermoplastic film packaging machines, in particular to a thermoplastic film packaging machine for packaging fruit juice. Background In juice production packaging line, thermoplastic film packagine machine is the key equipment that realizes product dampproofing, dustproof, fixed group, shrink stove is the core execution unit in the thermoplastic film packagine machine, it accepts the cladding piece of front end sealing and cutting machine output, make thermoplastic film heat shrink and closely laminate the product surface through the hot air flow effect, accomplish final package shaping, the core structure of traditional shrink stove generally includes the furnace body, heating element, conveying mechanism and blast system, during operation, the cladding piece is passed the furnace chamber by conveying mechanism at uniform velocity, heating element circular telegram back heating furnace internal air, blast system drive steam blows to the cladding piece, thermoplastic film softens under the hot air flow effect, shrink and laminate the fruit juice bottle, finally form regular packing finished product. The existing shrink furnace for packaging fruit juice is used for meeting the inlet and outlet requirements of a coating part, larger openings are reserved at two ends, so that high-temperature hot air flow in the furnace leaks out in a large amount, the heat utilization rate is low, long-distance diffusion type air supply is adopted, heat attenuation of hot air flow in the furnace in the diffusion process is obvious, energy consumption is high, heating is uneven, and when a film material is shrunk, the defects of bubbles, folds and the like are easily generated, and the bottle body edges are difficult to be tightly attached. Thus, we propose a thermoplastic film packaging machine for juice packaging. Disclosure of Invention In order to overcome the defects in the prior art, the invention aims to provide the thermoplastic film packaging machine for packaging fruit juice, which has the advantages of high heat utilization rate, uniform heating of a coating part and stable packaging quality. In order to achieve the aim of the invention, the invention adopts the following technical scheme: The utility model provides a thermoplastic film packagine machine for fruit juice packing, includes the shrink stove, the inside of shrink stove is equipped with circulation system, circulation system drive shrink inside gas circulation flow of stove and heating gas, circulation system blows the steam from the cladding piece bottom surface of below, both ends all are equipped with the structure of closing of shrink about the stove, the cladding piece is blocked partial air flue when moving in the structure of closing, the inside of shrink stove is equipped with two side-blown mechanism and a top-blown mechanism, two side-blown mechanisms are located the front and back both sides of top-blown mechanism respectively, two side-blown mechanisms are in front and back both sides respectively and are supported near the cladding piece and blow the steam to cladding piece front and back two sides, top-blown mechanism supports near cladding piece top surface and blows the steam to cladding piece top surface from the top. Preferably, the shrinkage furnace comprises a supporting shell, the top surface fixedly connected with side's pipe shell of supporting shell, the inside coaxial grafting of side's pipe shell has side's pipe inner shell, circulation system establishes inside side's pipe inner shell, be formed with the heat preservation intermediate layer between side's pipe inner shell inner wall and the side's pipe inner shell surface, the equal fixed mounting in both ends of controlling of supporting shell has the drawing box, install the net conveyer belt between two drawing boxes, install the rotatory power unit of drive net conveyer belt on the drawing box, side's pipe shell and the diapire of side's pipe inner shell all pass the net conveyer belt, the right-hand member fixed mounting of side's pipe shell top surface has the control box, the control box is connected with peripheral hardware control panel signal transmission, the control box is connected with the power unit electricity. Preferably, the circulating system comprises an outer square pipe of the partition, the outer square pipe of the partition is coaxially inserted in an inner square pipe shell, a reflux interlayer is formed between the inner wall of the inner square pipe shell and the outer surface of the outer square pipe of the partition, an inner square pipe of the partition is coaxially inserted in the outer square pipe of the partition, a buffer air chamber is formed between the outer surface of the inner square pipe of the partition and the inner wall of the outer square pipe of the partition, the outer square pipe shell, the inner square pip