CN112777082A - High-strength paper tray and preparation process thereof - Google Patents

High-strength paper tray and preparation process thereof Download PDF

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Publication number
CN112777082A
CN112777082A CN202110081150.XA CN202110081150A CN112777082A CN 112777082 A CN112777082 A CN 112777082A CN 202110081150 A CN202110081150 A CN 202110081150A CN 112777082 A CN112777082 A CN 112777082A
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CN
China
Prior art keywords
plate
corner
corner post
supporting
supporting plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110081150.XA
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Chinese (zh)
Inventor
亓兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Shangcheng Environmental Protection Packaging Material Co ltd
Original Assignee
Suzhou Shangcheng Environmental Protection Packaging Material Co ltd
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Publication date
Application filed by Suzhou Shangcheng Environmental Protection Packaging Material Co ltd filed Critical Suzhou Shangcheng Environmental Protection Packaging Material Co ltd
Priority to CN202110081150.XA priority Critical patent/CN112777082A/en
Publication of CN112777082A publication Critical patent/CN112777082A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D19/0004—Rigid pallets without side walls
    • B65D19/0006—Rigid pallets without side walls the load supporting surface being made of a single element
    • B65D19/0008—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface
    • B65D19/001—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element
    • B65D19/0014—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element forming discontinuous or non-planar contact surfaces
    • B65D19/0018—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element forming discontinuous or non-planar contact surfaces and each contact surface having a discrete foot-like shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/62—Uniting opposed surfaces or edges; Taping by adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/741—Moistening; Drying; Cooling; Heating; Sterilizing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D19/38—Details or accessories
    • B65D19/40—Elements for spacing platforms from supporting surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2110/00—Shape of rigid or semi-rigid containers
    • B31B2110/40—Shape of rigid or semi-rigid containers without sidewalls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00009—Materials
    • B65D2519/00014—Materials for the load supporting surface
    • B65D2519/00019—Paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00009—Materials
    • B65D2519/00049—Materials for the base surface
    • B65D2519/00054—Paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00547—Connections
    • B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
    • B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
    • B65D2519/00562—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements chemical connection, e.g. glued, welded, sealed

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)

Abstract

The invention provides a high-strength paper tray and a preparation process thereof, wherein the high-strength paper tray comprises the following components: the supporting plate and a plurality of corner posts are uniformly arranged at the bottom of the supporting plate in a matrix form; the preparation process of the high-strength paper tray comprises the following steps: preparing a supporting plate; preparing corner posts; positioning the corner posts; installing a tray; pre-drying, namely stacking the mounted trays from bottom to top in sequence, and applying pressure downwards to the top of the tray at the top; drying and forming, namely conveying the pre-dried tray into drying equipment to finish drying; the supporting layer and the inner supporting plate group in the high-strength paper tray supporting plate can provide good impact resistance and higher supporting strength, and the protective layer and the corner post sleeve can prevent external water and air from entering the tray, so that the tray strength is less influenced by external environmental factors; the preparation process of the high-strength paper tray has the advantages of simple equipment, convenience in operation, capability of operating after simple training of personnel and low labor cost.

Description

High-strength paper tray and preparation process thereof
Technical Field
The invention belongs to the technical field of paper trays, and particularly relates to a high-strength paper tray and a preparation process thereof.
Background
The paper pallet is a horizontal platform device used for containerizing, stacking, carrying and transporting goods and products which are used as unit loads, is a packaging piece which is often used in the product turnover and transportation process, and has the purposes of supporting the products and separating the products to play a role in buffering. The paper tray can be divided into a wooden paper tray, a plastic paper tray and a metal paper tray according to the classification of materials, the general paper tray mostly adopts a structure of a simulated honeycomb, paper is used as a base material, and a modern electromechanical integration is used for producing a novel honeycomb material. It has light weight, high strength, high rigidity, buffering, vibration isolating, heat insulating and sound isolating performance. Meanwhile, the method has low cost and wide applicability, is widely applied to the packaging, storage and transportation, building industry, vehicle and ship manufacturing industry, furniture industry and the like to replace wood, clay bricks, expanded polystyrene and the like, and has great significance for reducing forest logging and protecting the ecological environment.
However, due to the characteristics of the paper tray material, the impact resistance and the supporting strength are not high, especially in the environment of water and moisture, so it is urgently needed to provide a high-strength paper tray and a preparation process thereof, which can improve the waterproof performance and the supporting strength to solve the technical problems faced at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the high-strength paper tray with improved waterproof performance and improved supporting strength and the preparation process thereof.
The technical scheme of the invention is as follows: a high strength paper tray comprising: the supporting plate comprises a supporting plate and a plurality of corner posts which are uniformly arranged at the bottom of the supporting plate in a matrix manner; the supporting plate is provided with a supporting layer, and a protective layer is coated on the outer side of the supporting layer; the corner post is provided with a corner post sleeve with an open top and a cuboid cavity structure and an inner supporting plate group fixed inside the corner post sleeve; the corner column sleeve is provided with a corner column bottom plate, a first corner column side plate formed by bending one group of edges opposite to the corner column bottom plate by 90 degrees and a second corner column side plate formed by bending the other group of edges opposite to the corner column bottom plate by 90 degrees, the end part of the second corner column side plate close to the first corner column side plate is bent inwards by 90 degrees to form a corner column connecting plate, and the outer side of the corner column connecting plate is fixedly bonded with the inner side of the first corner column side plate; the inner supporting plate group is formed by laminating and bonding a plurality of inner supporting plates.
The inner supporting plates are corrugated paper boards, the inner supporting plate groups are formed by bonding a plurality of corrugated paper boards, and the inner supporting plates in the inner supporting plate groups are perpendicular to the corner post bottom plates;
the supporting layer is a honeycomb paperboard, and the protective layer is a waterproof paperboard.
And waterproof coatings are arranged on the outer sides of the protective layer and the corner post sleeve.
The preparation process of the high-strength paper tray comprises the following steps:
preparing a supporting plate, namely selecting a honeycomb paperboard as a supporting layer, cutting the honeycomb paperboard according to the size, fixing and coating a protective layer on the outer part of the honeycomb paperboard through an adhesive, and drying the honeycomb paperboard for later use;
preparing a corner post, namely laminating and bonding a plurality of inner supporting plates into an inner supporting plate group for later use, cutting a semi-finished corner post sleeve according to the size specification of the inner supporting plate group, brushing glue on one side of the semi-finished corner post sleeve, bonding and molding the semi-finished corner post sleeve and the inner supporting plate group by using a corner post forming machine, and drying for later use;
positioning the corner posts, and marking the mounting positions of the corner posts at the bottom of the supporting plate in a code spraying manner;
mounting a tray, and sequentially bonding the corner posts at the bottom of the supporting plate according to the marked positions at the bottom of the supporting plate;
pre-drying, namely stacking the mounted trays from bottom to top in sequence, applying pressure downwards on the top of the tray at the top, and naturally drying;
and (5) drying and forming, namely conveying the pre-dried tray into drying equipment to finish drying.
In the step of pre-drying, 15-25N of pressure is applied downwards on the top of the uppermost tray and is kept for 5-12 h.
And drying and forming, namely conveying the pre-dried tray into microwave drying equipment for drying, wherein the microwave output power is 90-110 kw, and drying for 1-1.5 min.
In the preparation technology of the high-strength paper tray, the corner post forming machine comprises: the middle part of the forming pipe is provided with a channel matched with the corner post, the forming pipe is provided with a feeding end and a discharging end, and the periphery of the feeding end is provided with a lug corresponding to the corner post connecting plate; the heating mechanism is coated on the outer side of the forming pipe and used for heating the forming pipe, and is provided with a top heating plate arranged at the top of the forming pipe and side heating plates arranged on two sides of the forming pipe; the push plate corresponds to the feeding end; and the pushing mechanism drives the push plate to be close to or far away from the feeding end.
The supporting frame is arranged on the outer side of the forming pipe, a top pressing plate is arranged on the top heating plate, side pressing plates are arranged on the outer sides of the side heating plates, the top pressing plates, the side pressing plates and the supporting frame are connected through detachable supporting mechanisms, the detachable supporting mechanisms are provided with screw rods, the screw rods penetrate through the supporting frame, and the screw rods on the two sides of the supporting frame are fixed through fastening nuts.
In the preparation technology of the high-strength paper tray, the angle column forming machine further comprises a bottom plate, the forming pipe is fixed to the top of the bottom plate, the pushing mechanism is provided with an air cylinder, the air cylinder is fixed to the top of the bottom plate through a support plate, a piston rod of the air cylinder is connected with the push plate, a base plate is fixedly arranged on the bottom plate below the push plate, and the base plate is flush with the inner bottom surface of the feeding end.
The clamping plates are symmetrically arranged on two sides of the feeding end and provided with installation parts and blocking parts which are perpendicular to each other, and a gap between a plane where the blocking parts are located and a plane where the end faces of the lugs are located is not smaller than the thickness of the first side plate of the corner post.
The invention has the beneficial effects that:
(1) the high-strength paper tray supporting plate adopts the supporting layer to wrap the protective layer outside, the corner post adopts the inner supporting plate group to wrap the corner post sleeve outside, the supporting layer and the inner supporting plate group can provide good impact resistance and higher supporting strength, and the protective layer and the corner post sleeve can isolate external moisture from entering the tray, so that the tray strength is less influenced by external environmental factors;
(2) the preparation process of the high-strength paper tray has the advantages that the equipment used is simple, the operation is convenient, the operation can be carried out after the personnel are simply trained, and the labor cost is low;
(3) the corner post forming machine can rapidly form and dry the corner post, can obviously shorten the production time of the tray, and improves the production efficiency.
Drawings
Fig. 1 is a schematic view of the internal structure of the high-strength paper tray according to the present invention.
Fig. 2 is a schematic view of an external structure of the high-strength paper tray according to the present invention.
FIG. 3 is a schematic structural view of the corner post of the present invention.
Fig. 4 is a schematic structural view of a semi-finished product of the corner post sleeve of the present invention.
Fig. 5 is a schematic structural view of a corner post sleeve according to the present invention.
Fig. 6 is a schematic structural view of a corner post forming machine according to the present invention.
FIG. 7 is a second schematic structural view of the corner post forming machine of the present invention.
Detailed Description
The following describes the embodiments of the present invention with reference to the drawings and examples.
As shown in fig. 1 to 5, a high-strength paper tray includes: the supporting plate 200 and a plurality of corner posts 100 are uniformly arranged at the bottom of the supporting plate 200 in a matrix form; the supporting plate 200 is provided with a supporting layer 201, the outer side of the supporting layer 201 is coated with a protective layer 202, the supporting layer 201 is used as a main support of the supporting plate 200, the impact resistance and the supporting strength of the surface of the supporting plate 200 are improved, and the protective layer 202 is used for protecting the supporting layer 201 inside the supporting layer from being influenced by external water and moisture; the corner post 100 is provided with a corner post sleeve 101 with a cuboid cavity structure and an open top, and an inner supporting plate group 102 fixed in the corner post sleeve 101; the corner post sleeve 101 is provided with a corner post bottom plate 1011, a corner post first side plate 1012 formed by bending 90 degrees along one group of opposite edges of the corner post bottom plate 1011 and a corner post second side plate 1013 formed by bending 90 degrees along the other group of opposite edges of the corner post bottom plate 1011, wherein the end part of the corner post second side plate 1013 close to the corner post first side plate 1012 is bent inwards by 90 degrees to form a corner post connecting plate 1014, and the outer side of the corner post connecting plate 1014 is fixedly bonded with the inner side of the corner post first side plate 1012; the inner supporting plate group 102 is formed by laminating and bonding a plurality of inner supporting plates 1021; the size of the inner supporting plate group 102 is matched with the inner size of the corner post sleeve 101, and the inner supporting plate group 102 is bonded in the corner post sleeve 101; the inside of the corner post sleeve 101 is supported by the supporting plate group 102, so that the manufactured corner post 100 has better supporting strength, and meanwhile, the corner post sleeve 101 is coated outside the inner supporting plate group 102, so that the phenomenon that water vapor enters the inner supporting plate group 102 can be reduced, and the strength of the corner post 100 is slightly influenced by the outside.
In the above embodiment, specifically, the inner supporting plate 1021 is a corrugated cardboard, the inner supporting plate group 102 is formed by bonding a plurality of corrugated cardboards, wherein the specific number of the inner supporting plate groups 102 is related to the internal dimension specification of the corner post sleeve 101, the length, width and height of the bonded inner supporting plate group 102 are matched with the internal length, width and height of the corner post sleeve 101, or conversely, the specification of the corner post sleeve 101 may be determined according to the inner supporting plate group 102, the inner supporting plate 1021 in the inner supporting plate group 102 is perpendicular to the corner post base plate 1011, the supporting layer 202 is a honeycomb cardboard, and the protective layer is a waterproof cardboard 202; in order to further improve the waterproof performance of the protective layer 202 and the corner post sleeve 101, waterproof coatings are respectively arranged on the outer sides of the protective layer 202 and the corner post sleeve 101.
The preparation process of the high-strength paper tray comprises the following steps:
preparing a supporting plate, namely selecting a honeycomb paperboard as a supporting layer 201, cutting the honeycomb paperboard according to the size, fixing and coating a protective layer 202 on the outer part of the honeycomb paperboard through an adhesive, drying the honeycomb paperboard for later use, specifically, using kraft paper as the protective layer 202, completely coating the honeycomb paperboard through the kraft paper, and bonding the honeycomb paperboard and the kraft paper through glue, wherein the size of the cut honeycomb paperboard is the same as that of the supporting plate;
preparing the corner post, namely laminating a plurality of inner supporting plates 1021, coating glue on the connected side surfaces to enable the inner supporting plates 1021 to be bonded into an inner supporting plate group 102 for later use, cutting a corner post sleeve semi-finished product according to the size specification of the inner supporting plate group 102, wherein the structure of the corner post sleeve semi-finished product is shown in figure 4, and after single-side glue brushing of the corner post sleeve semi-finished product, bonding and molding the corner post sleeve semi-finished product and the inner supporting plate group 102 by using a corner post forming machine and drying for later use;
positioning the corner posts, namely marking the mounting positions of the corner posts 100 at the positions of the bottoms of the supporting plates 200 by adopting a code spraying mode, and specifically spraying line frames matched with the shapes of the corner posts 100 at the bottoms of the supporting plates 200 by adopting a code spraying mode according to the actual bonding positions of the corner posts 100;
mounting a tray, and sequentially bonding the corner posts 100 to the bottom of the supporting plate by using glue according to the marked positions at the bottom of the supporting plate 200;
pre-drying, stacking the mounted trays from bottom to top in sequence, applying pressure downwards on the top of the tray at the top, and naturally drying, wherein the pressure can be 15-25N downward by adopting a flat press and is kept for 5-12 h;
and (3) drying and forming, namely conveying the pre-dried tray into microwave drying equipment for drying, wherein the microwave output power is 90-110 kw, and drying for 1-1.5 min.
As shown in fig. 6 and 7, the corner post forming machine in the above embodiment includes: the middle part of the forming pipe 8 is provided with a channel matched with the corner post 100, the forming pipe 8 is provided with a feeding end 801 and a discharging end 802, and the periphery of the feeding end 801 is provided with a lug 9 corresponding to the corner post connecting plate 1014; the heating mechanism is coated on the outer side of the forming pipe 8 and used for heating the forming pipe 8; the push plate 6, the push plate 6 corresponds to the feeding end 801; the pushing mechanism drives the pushing plate 6 to be close to or far away from the feeding end 801; when in use, glue is smeared on the inner side of a semi-finished product of the corner post sleeve 101 shown in figure 2, then one side which is not smeared with the glue is close to the feeding end 801, the inner supporting plate group 102 is arranged between the semi-finished product of the corner post sleeve 101 and the push plate 6, the push plate 6 is driven by the push mechanism to push the inner supporting plate group 102 to be abutted against the corner post bottom plate 1011 of the semi-finished product of the corner post sleeve 101, the corner post connecting plate 1014 is firstly bent under the action of the bump 9, then the corner post connecting plate 1014 gradually enters the forming pipe 8 along with the corner post bottom plate 1011, the corner post first side plate 1012 and the corner post second side plate 1013 are simultaneously bent, the corner post 100 shown in figure 1 is formed inside the forming pipe 8, the heating mechanism heats the forming pipe to accelerate the solidification of the glue in the corner post 100, the corner post 100 entering the forming pipe 8 earlier is pushed to continuously move towards the discharging end 802 along with the different corner posts 100 continuously entering the forming pipe 8 from the feeding, at this time, the corner post 100 is heated in the forming tube 8 by the heating mechanism, and the glue is basically cured, so that the manufacturing time of the corner post can be effectively shortened, and the production efficiency is improved.
The former of corner post still includes bottom plate 1, and forming tube 8 is fixed at the top of bottom plate 1, and push mechanism has cylinder 3, and cylinder 3 passes through extension board 2 to be fixed at the top of bottom plate 1, and the piston rod of cylinder 3 is connected with push pedal 6, and the piston rod of cylinder 3 stretches out and can promotes push pedal 6 and remove to feed end 801, and the piston rod withdrawal pulling push pedal 6 of cylinder 3 resets and keeps away from feed end 801.
In order to improve the moving stability of the push plate 6, a guide rod 4 is arranged on the upper portion of one side of the push plate 6, which is far away from the forming tube 8, the guide rod 4 is vertically fixed on the side surface of the push plate 6, and a linear bearing 5 matched with the guide rod 4 is fixedly arranged on the support plate 2.
The backing plate 7 is fixedly arranged on the bottom plate 1 below the push plate 6, the backing plate 7 is flush with the inner bottom surface of the feeding end 801, when the inner supporting plate group 102 is arranged on the backing plate 7, the backing plate 7 supports the inner supporting plate group 102 to be flush with the feeding end 801, so that the push plate 6 can push the inner supporting plate group 102 into the forming pipe 8, and the positioning is convenient.
The two sides of the feed end 801 are symmetrically provided with clamping plates 10, each clamping plate 10 is provided with an installation part 1001 and a blocking part 1002 which are perpendicular to each other, the installation parts 1001 and the blocking parts 1002 are two plate bodies which are perpendicularly connected into an integral structure, the installation parts 1001 are fixedly assembled or welded on the two sides of the feed end 801 through bolts, semi-finished corner post sleeves 101 are inserted between the blocking parts 1002 and the ends of the lugs 9, the blocking parts 1002 can fix the semi-finished corner post sleeves 101, and gaps between planes where the blocking parts 1002 are located and planes where the end faces of the lugs 9 are located are not smaller than the thickness of first side plates 1012 of the corner posts, so that the semi-finished corner post sleeves 101 can be inserted between the blocking parts 1002 and the ends of.
Heating mechanism has the top hot plate 16 that sets up at forming tube 8 top and sets up the side hot plate 17 in forming tube 8 both sides, and wherein top hot plate 16 and side hot plate 17 all can adopt the electric heating board, can heat forming tube 8 after the circular telegram, and it has temperature feedback that the heating temperature of electric heating board is adjustable, and heating temperature is controllable, and the electric heating board is prior art, and the retrench is no longer repeated.
As a specific fixing mode of the top heating plate 16 and the side heating plate 17, a bracket 13 is arranged on the outer side of the forming tube 8, a top pressing plate 11 is arranged on the top heating plate 16, a side pressing plate 12 is arranged on the outer side of the side heating plate 17, and the top pressing plate 11, the side pressing plate 12 and the bracket 13 are connected through a detachable supporting mechanism; specifically, the detachable supporting mechanism is provided with a screw rod 14, the screw rod 14 is vertically welded and fixed on the top pressing plate 11 or the side pressing plate 12, the screw rod 14 penetrates through the support 13, the screw rods 14 on two sides of the support 13 are fixed through fastening nuts 15, and the top heating plate 16 and the side heating plate 17 are fixed by the aid of the cooperation of the top pressing plate 11 and the side pressing plate 12 with the detachable supporting mechanism, so that the detachable supporting mechanism is convenient to detach and replace and maintain.
The above-mentioned embodiments only express some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A high strength paper tray, comprising:
the supporting plate comprises a supporting plate and a plurality of corner posts which are uniformly arranged at the bottom of the supporting plate in a matrix manner;
the supporting plate is provided with a supporting layer, and a protective layer is coated on the outer side of the supporting layer;
the corner post is provided with a corner post sleeve with an open top and a cuboid cavity structure and an inner supporting plate group fixed inside the corner post sleeve;
the corner column sleeve is provided with a corner column bottom plate, a first corner column side plate formed by bending one group of edges opposite to the corner column bottom plate by 90 degrees and a second corner column side plate formed by bending the other group of edges opposite to the corner column bottom plate by 90 degrees, the end part of the second corner column side plate close to the first corner column side plate is bent inwards by 90 degrees to form a corner column connecting plate, and the outer side of the corner column connecting plate is fixedly bonded with the inner side of the first corner column side plate;
the inner supporting plate group is formed by laminating and bonding a plurality of inner supporting plates.
2. The high strength paper tray of claim 1, wherein:
the inner supporting plates are corrugated paper boards, the inner supporting plate groups are formed by bonding a plurality of corrugated paper boards, and the inner supporting plates in the inner supporting plate groups are perpendicular to the corner post bottom plates;
the supporting layer is a honeycomb paperboard, and the protective layer is a waterproof paperboard.
3. The high strength paper tray of claim 1, wherein: and waterproof coatings are arranged on the outer sides of the protective layer and the corner post sleeve.
4. A process for making a high strength paper tray as claimed in any one of claims 1 to 3, comprising the steps of:
preparing a supporting plate, namely selecting a honeycomb paperboard as a supporting layer, cutting the honeycomb paperboard according to the size, fixing and coating a protective layer on the outer part of the honeycomb paperboard through an adhesive, and drying the honeycomb paperboard for later use;
preparing a corner post, namely laminating and bonding a plurality of inner supporting plates into an inner supporting plate group for later use, cutting a semi-finished corner post sleeve according to the size specification of the inner supporting plate group, brushing glue on one side of the semi-finished corner post sleeve, bonding and molding the semi-finished corner post sleeve and the inner supporting plate group by using a corner post forming machine, and drying for later use;
positioning the corner posts, and marking the mounting positions of the corner posts at the bottom of the supporting plate in a code spraying manner;
mounting a tray, and sequentially bonding the corner posts at the bottom of the supporting plate according to the marked positions at the bottom of the supporting plate;
pre-drying, namely stacking the mounted trays from bottom to top in sequence, applying pressure downwards on the top of the tray at the top, and naturally drying;
and (5) drying and forming, namely conveying the pre-dried tray into drying equipment to finish drying.
5. The high strength paper tray of claim 4, wherein in the step of predrying, a pressure of 15-25N is applied downwards on the top of the uppermost tray and is maintained for 5-12 h.
6. The high-strength paper tray as claimed in claim 4, wherein the step of drying and forming is to send the pre-dried tray into a microwave drying device for drying, the microwave output power is 90-110 kw, and the drying time is 1-1.5 min.
7. The high strength paper tray of claim 4, wherein the corner post forming machine comprises:
the middle part of the forming pipe is provided with a channel matched with the corner post, the forming pipe is provided with a feeding end and a discharging end, and the periphery of the feeding end is provided with a lug corresponding to the corner post connecting plate;
the heating mechanism is coated on the outer side of the forming pipe and used for heating the forming pipe, and is provided with a top heating plate arranged at the top of the forming pipe and side heating plates arranged on two sides of the forming pipe;
the push plate corresponds to the feeding end;
and the pushing mechanism drives the push plate to be close to or far away from the feeding end.
8. The high strength paper tray of claim 7, wherein: the supporting frame is arranged on the outer side of the forming pipe, a top pressing plate is arranged on the top heating plate, side pressing plates are arranged on the outer sides of the side heating plates, the top pressing plates, the side pressing plates and the supporting frame are connected through detachable supporting mechanisms, the detachable supporting mechanisms are provided with screw rods, the screw rods penetrate through the supporting frame, and the screw rods on the two sides of the supporting frame are fixed through fastening nuts.
9. The high-strength paper tray according to claim 7, further comprising a bottom plate, wherein the forming tube is fixed to the top of the bottom plate, the pushing mechanism is provided with an air cylinder, the air cylinder is fixed to the top of the bottom plate through a support plate, a piston rod of the air cylinder is connected with the push plate, a base plate is fixedly arranged on the bottom plate below the push plate, and the base plate is flush with the inner bottom surface of the feeding end.
10. The high strength paper tray of claim 7, wherein: the clamping plates are symmetrically arranged on two sides of the feeding end and provided with installation parts and blocking parts which are perpendicular to each other, and a gap between a plane where the blocking parts are located and a plane where the end faces of the lugs are located is not smaller than the thickness of the first side plate of the corner post.
CN202110081150.XA 2021-01-21 2021-01-21 High-strength paper tray and preparation process thereof Pending CN112777082A (en)

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