CN112141487A

CN112141487A - Anti-skid plastic tray and manufacturing method thereof

Info

Publication number: CN112141487A
Application number: CN201910566519.9A
Authority: CN
Inventors: 蔡汝鹏
Original assignee: Qingdao Quanderun Plastic Industry Co ltd
Current assignee: Qingdao Quanderun Plastic Industry Co ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-12-29

Abstract

The invention discloses an anti-skid plastic tray and a manufacturing method thereof, relating to the field of logistics transportation equipment, wherein the manufacturing steps comprise: preparing upper and lower sheets of a panel, forming the upper and lower sheets of the panel, thermally forming the upper and lower sheets of the panel, preparing upper and lower sheets of a base, forming the upper and lower sheets of the base, thermally forming the upper and lower sheets of the base, and performing hot melt welding on the panel and the base to modify the surface; the anti-skid plastic tray built-in steel pipe manufactured by the steps has the characteristics of high structural strength, high load resistance, light weight, good anti-skid effect, easiness in cleaning, long service life and the like.

Description

Anti-skid plastic tray and manufacturing method thereof

Technical Field

The invention relates to the field of logistics transportation equipment, in particular to an anti-skidding plastic tray and a manufacturing method thereof.

Background

The definition of the pallet by the Chinese national standard 'logistic terms' is a horizontal platform device for containerizing, stacking, carrying and transporting goods and products used as unit load. As a kind of container equipment similar to a container, a pallet is widely used in the fields of production, transportation, storage, circulation, and the like.

The wooden tray has higher structural strength than the common wooden tray, but the angle steel can be corroded due to the influence of the material of the wooden tray in the using process, the wooden tray is easy to damage, and the structural strength is reduced; while making the tray relatively heavy.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide an anti-skid plastic tray with the characteristics of light weight and high strength and a manufacturing method thereof.

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

an anti-skid plastic tray comprises a panel and a plurality of bases fixed on the bottom surface of the panel; the base is of a strip structure and is fixed below the panel in parallel at equal intervals, and the interval between every two adjacent bases is used for the fork of a forklift to enter; the panel and the base are both arranged in a hollow mode, and steel pipes are coated inside the four sides of the panel and inside the base along the long edge direction; the lower surface of the panel is uniformly provided with first support parts formed by concave inwards, and the first support parts are abutted against the inner wall of the upper surface of the panel; and third support parts which are formed by concave inwards are arranged on the lower surface of the base along the length direction, and the third support parts are abutted against the inner wall on the upper surface of the base.

Due to the arrangement, the panel is heightened through the base, so that space is conveniently provided for the fork of the forklift to enter the fork; the steel pipes are coated on the panel and the base, so that the anti-skid plastic tray has the functions of improving the structural strength and the bearing capacity; the first supporting part and the third supporting part are respectively arranged in the hollow panel and the base, so that the light weight of the anti-skid plastic tray is ensured, and the load resistance is enhanced; thereby achieving the purposes of strengthening the structure, increasing the load and reducing the weight.

Further setting: the lower surface of the panel protrudes downwards to form a plurality of bosses connected with the base, and the upper surface of the panel is concave inwards to form a second supporting part abutted against the inner wall of each boss corresponding to the boss.

According to the arrangement, the boss is additionally arranged to form a fixed point connected with the base, and meanwhile, a space is provided for the fork of the forklift to enter;

the bearing capacity of boss department has been strengthened in the setting of second supporting part, the use amount of the plastics that reduce simultaneously, material cost is practiced thrift.

Further setting: a pedestal connected with the boss is convexly formed on the upper surface of the base, and a fourth supporting part abutted against the inner wall of the pedestal is concavely formed on the lower surface of the base at a position corresponding to the pedestal; the pedestal with the boss is fixed the back, adjacent two form between the pedestal and supply fork truck to advance the fork mouth of fork.

According to the arrangement, the pedestal is connected with the boss, so that the base and the panel are accurately fixed, and meanwhile, the panel is further lifted, so that the fork of a forklift can conveniently enter the panel; the fork entry that forms between two adjacent pedestals is convenient for fork truck to advance the fork from antiskid type plastics tray opposite side to realize that antiskid type plastics tray four sides advance the fork, improve its practicality.

Further setting: and a plurality of anti-skid cushion blocks are arranged on the upper surface and the lower surface of the panel and the lower surface of the base.

By the arrangement, the anti-skid cushion blocks are additionally arranged, so that the static friction force between the anti-skid plastic tray and goods during carrying and transportation is improved, and an anti-skid effect is achieved; thereby ensuring the stability and reliability of the antiskid plastic tray when in use.

Further setting: the anti-skid cushion block comprises a fixed seat and a rubber pad arranged on the fixed seat; the lower surface of base the upper surface and the lower surface of panel all are equipped with the confession the mounting hole that the fixing base interference was inserted.

Through the arrangement, the fixing seat is inserted into the mounting hole, so that the anti-skid cushion block is fixed; meanwhile, the antiskid cushion block is convenient to pull out from the mounting hole for replacement when damaged; thereby simplifying the maintenance and prolonging the service life of the anti-skid plastic tray.

Further setting: one end of the fixed seat inserted into the mounting hole is provided with a circular truncated cone-shaped chuck; the large-diameter end of the clamping head is inward, the diameter of the large-diameter end of the clamping head is larger than that of the fixed seat, and the diameter of the small-diameter end of the clamping head is smaller than that of the fixed seat.

So set up, establish the dop through adding for after inserting the mounting hole with the fixing base, the dop supports tightly with the internal perisporium interference fit of mounting hole, plays the effect that prevents that anti-skidding cushion piece pine from taking off.

Further setting: the peripheral wall of the fixed seat is provided with an annular groove, the rubber pad is arranged in a cover shape, and the opening end of the rubber pad is provided with a flange which is embedded into the annular groove inwards.

So set up, through with turn-ups embedding ring channel to realize the fixed of rubber pad and fixing base, be convenient for simultaneously change, simplify the maintenance.

Further setting: the plastic used for manufacturing the anti-skid plastic tray is ultrahigh molecular weight high density polyethylene.

By the arrangement, the stress cracking resistance, the impact strength, the tensile strength, the rigidity, the wear resistance, the chemical stability and the like of the high molecular weight high density polyethylene are superior to those of the high density polyethylene, and the product can be used in severe environment for a long time; meanwhile, the density is not high, and the method is suitable for producing the anti-skid plastic tray.

A manufacturing method for the anti-skid plastic tray comprises the following steps:

preparing upper and lower sheets of a panel: extruding the molten raw materials out of the upper sheet and the lower sheet of the panel through a mouth die by a plastic extruder;

forming upper and lower sheets of the panel: carrying out plastic suction molding on the upper sheet of the panel in an upper sheet mold; after the steel pipe is placed in a panel lower sheet die, placing the panel lower sheet into the panel lower sheet die for suction molding and forming;

thirdly, thermal forming of upper and lower sheets of the panel: placing the formed panel upper sheet and the panel lower sheet into a panel forming die for pressurization and hot forming, and opening the die to take out the formed panel after the forming time is reached;

preparing upper and lower base sheets: extruding the molten raw materials out of the upper sheet and the lower sheet of the base through a mouth die by a plastic extruder;

forming upper and lower sheets of the base: carrying out plastic suction molding on the base upper sheet in an upper sheet mold; after the steel pipe is placed in the base lower sheet die, placing the base lower sheet into the base lower sheet die for suction molding and forming;

sixthly, hot forming of upper and lower sheets of the base: putting the formed upper base sheet and the formed lower base sheet into a base forming die for pressure heat sealing, and opening the die to take out the formed base after the forming time is up;

seventhly, carrying out hot-melt welding on the panel and the base: heating the contact surface of the panel and the base by a hot melting welding machine to enable the surfaces of the panel and the base to be molten, then tightly attaching the panel and the base, and fixing the panel and the base after cooling to obtain the anti-skid plastic tray;

correcting the surface: and trimming the surface of the anti-skid plastic tray to meet the use requirement.

So set up, make anti-skidding type plastics tray through using forming process such as plastic uptake, hot pressing and hot melt welding, simplified process flow, compare with injection moulding, when not losing structural strength, practiced thrift material cost, improved production efficiency.

Further setting: in the third step and the sixth step, in the process of pressure heat sealing, compressed air is introduced into the cavity between the upper sheet of the panel and the lower sheet of the panel, and compressed air is introduced into the cavity between the upper sheet of the base and the lower sheet of the base; and the compressed air is discharged before the die is opened.

So set up, through letting in compressed air for sheet and the laminating of mould cavity wall are inseparabler, and the size precision of the product of improvement is convenient for cool off fast simultaneously, shortens the shaping time, raises the efficiency.

In conclusion, the invention has the following beneficial effects:

the anti-skid plastic pallet is internally provided with a steel pipe, and has higher structural strength and load resistance than a common wooden pallet;

2, the antiskid plastic tray has stable structure, light weight and good antiskid effect;

3, the anti-skid plastic pallet is convenient to fork, easy to maintain and excellent in man-machine effect;

4, the anti-skid plastic tray is clean and sanitary, easy to clean and long in service life;

and 5, the anti-skid plastic tray is simple and convenient to manufacture, high in precision and stable in quality.

Drawings

FIG. 1 is an exploded view of a non-slip plastic pallet for use on the top surface of a display panel;

FIG. 2 is an exploded view of the anti-slip plastic tray for the lower surface of the display panel;

FIG. 3 is a half cross-sectional view of a slip resistant plastic pallet showing the features of the fork entry and steel tubes;

FIG. 4 is a half cross-sectional view of a slip resistant plastic pallet showing features of a steel pipe;

FIG. 5 is an exploded view of the cleat block;

FIG. 6 is a schematic flow chart of a method for manufacturing the anti-slip plastic pallet.

In the figure: 1. a panel; 2. a base; 3. a steel pipe; 4. a first support section; 5. a third support portion; 6. a boss; 7. a second support portion; 8. a pedestal; 9. a fourth support portion; 10. a fork inlet; 11. a gripper; 12. an anti-skid cushion block; 121. a fixed seat; 122. a rubber pad; 13. mounting holes; 14. clamping a head; 15. an annular groove; 16. and (5) flanging.

Detailed Description

The non-slip type plastic pallet will be further described with reference to fig. 1 to 6.

An anti-skid plastic tray, which combines with the figures 1 and 2, comprises a panel 1 and a base 2; the base 2 has three and is the strip structure, fixes in panel 1 below according to the overall arrangement of river style of calligraphy, and the interval of adjacent base 2 supplies fork truck to advance the fork.

As shown in fig. 3 and 4, the panel 1 is hollow, the steel pipes 3 are wrapped inside four sides of the panel 1, and the upper surface of the panel 1 is provided with anti-slip threads in combination with fig. 1. Referring to fig. 1 and 2, first support portions 4 formed by concave portions are uniformly distributed on the lower surface of the panel 1 at positions close to the four sides of the lower surface of the panel 1, and the first support portions 4 are abutted against the inner wall of the upper surface of the panel 1; the lower surface of the panel 1 is recessed near the edges to form a plurality of grips 11. The lower surface of the panel 1 protrudes downwards to form a plurality of bosses 6 connected with the bases 2, and each base 2 corresponds to three bosses 6; the upper surface of the panel 1 is concavely formed at a position corresponding to the boss 6 to form a second support part 7 abutting against the inner wall of the boss 6.

As shown in fig. 3 and 4, the base 2 is hollow and is also covered with a steel pipe 3 along the long side direction, and with reference to fig. 1 and 2, a third support part 5 formed by an inner recess is arranged on the lower surface of the base 2 along the length direction, and the third support part 5 is abutted with the inner wall of the upper surface of the base 2; a pedestal 8 connected with the boss 6 is convexly formed on the upper surface of the base 2, and a fourth supporting part 9 abutted with the inner wall of the pedestal 8 is concavely formed on the lower surface of the base 2 corresponding to the position of the pedestal 8; the peripheral wall of the pedestal 8 is provided with a vertical reinforcing groove; after the pedestals 8 are fixed with the bosses 6, fork inlets 10 for the fork of the forklift to enter are formed between every two adjacent pedestals 8.

With reference to fig. 1 and 2, a plurality of anti-skid pads 12 are mounted on the lower surface of the base 2 and the upper and lower surfaces of the panel 1; specifically, the number of the anti-skid cushion blocks 12 on the upper surface of the panel 1 is 12, the number of the anti-skid cushion blocks 12 on the lower surface of the panel 1 is 8, and the number of the anti-skid cushion blocks 12 on the lower surface of each base 2 is not less than 2; and after the anti-skid plastic trays are stacked, the base 2 of the anti-skid plastic tray positioned above is contacted with the anti-skid cushion blocks 12 on the plate surface of the anti-skid plastic tray positioned below.

Referring to fig. 5, the anti-skid pad 12 includes a fixing seat 121 and a rubber pad 122 disposed on the fixing seat 121; all be equipped with at the lower surface of base 2, the upper surface and the lower surface of panel 1 and supply fixing base 121 male mounting hole 13, specifically, fixing base 121 is cylindric setting, and its inside cavity just has crisscross strengthening rib. One end of the fixed seat 121 inserted into the mounting hole 13 is provided with a truncated cone-shaped chuck 14; the large-diameter end of the chuck 14 is inward and has a diameter larger than that of the fixed seat 121, and the small-diameter end of the chuck is smaller than that of the fixed seat 121; the other end of the fixing seat 121 is provided with an annular groove 15 around the peripheral wall.

Referring to fig. 5, rubber pad 122 is in the form of a cap with inward flange 16 at the open end; after the rubber pad 122 is sleeved on the fixing seat 121, the flange 16 is embedded in the annular groove 15 to play a role in limiting the sliding of the rubber pad 122. The end face of the opening of the mounting hole 13 is provided with a coaxial counter bore for abutting the rubber pad 122 so as to reduce the height of the rubber pad 122 exposed on the panel 1.

With reference to fig. 6, the manufacturing method of the anti-slip plastic tray includes the following steps:

forming upper and lower sheets of the panel: forming the mounting hole 13 and the second supporting part 7 on the upper sheet of the panel in an upper sheet mold in a plastic suction manner; after the steel pipe 3 is placed in the panel lower sheet die, the panel lower sheet is placed in the panel lower sheet die to be subjected to plastic suction to form a molded boss 6, a gripper 11 and a first supporting part 4;

thirdly, thermal forming of upper and lower sheets of the panel: placing the formed upper panel sheet and the lower panel sheet into a panel forming die for pressure heat sealing, and simultaneously introducing compressed air into a cavity between the upper panel sheet and the lower panel sheet to enable the upper panel sheet and the lower panel sheet to be attached to the cavity wall of the die; after the molding time is up, discharging the compressed air, opening the mold and taking out the molded panel 1;

forming upper and lower sheets of the base: forming the upper sheet of the base into a pedestal 8 in an upper sheet mold through plastic suction; after the steel pipe 3 is placed in the sheet die under the base, the sheet under the base is placed in the sheet die under the base to be subjected to plastic suction forming to form a third supporting part 5 and a fourth supporting part 9;

sixthly, hot forming of upper and lower sheets of the base: placing the formed upper sheet and lower sheet of the base into a base forming die for pressure heat sealing, and introducing compressed air into a cavity between the upper sheet and the lower sheet of the base to enable the upper sheet and the lower sheet of the base to be attached to the die cavity wall; after the molding time is up, discharging the compressed air, opening the mold and taking out the molded base 2;

seventhly, carrying out hot-melt welding on the panel and the base: the end surfaces of the boss 6 and the pedestal 8 are heated by a hot melting welding machine, the surface of the boss 6 and the surface of the pedestal 8 are melted, the panel 1 and the base 2 are tightly attached, and the panel 1 and the base 2 are fixed after cooling to obtain the anti-skid plastic tray;

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. An anti-skid plastic tray comprises a panel (1) and a plurality of bases (2) fixed on the bottom surface of the panel (1); the base (2) is of a strip structure and is fixed below the panel (1) in parallel at equal intervals, and the interval between every two adjacent bases (2) is used for a forklift to enter; the method is characterized in that: the panel (1) and the base (2) are both arranged in a hollow mode, and steel pipes (3) are coated inside the four sides of the panel (1) and inside the base (2) along the long edge direction; first support parts (4) formed by concave inwards are uniformly distributed on the lower surface of the panel (1), and the first support parts (4) are abutted against the inner wall of the upper surface of the panel (1); and third support parts (5) which are formed by concave inwards are arranged on the lower surface of the base (2) along the length direction, and the third support parts (5) are abutted against the inner wall on the upper surface of the base (2).

2. The non-slip plastic pallet according to claim 1, wherein: the lower surface of the panel (1) protrudes downwards to form a plurality of bosses (6) connected with the base (2), and the upper surface of the panel (1) corresponds to the bosses (6) and is concave inwards to form second supporting parts (7) abutted to the inner walls of the bosses (6).

3. The non-slip plastic tray of claim 2, wherein: a pedestal (8) connected with the boss (6) is formed on the upper surface of the base (2) in a protruding mode, and a fourth supporting portion (9) abutted against the inner wall of the pedestal (8) is formed on the lower surface of the base (2) in a recessed mode at a position corresponding to the pedestal (8); pedestal (8) with boss (6) are fixed the back, adjacent two form between pedestal (8) and supply fork truck to advance fork mouth (10) of fork.

4. The non-slip plastic pallet according to claim 1, wherein: the upper surface and the lower surface of the panel (1) and the lower surface of the base (2) are respectively provided with a plurality of anti-skid cushion blocks (12).

5. The non-slip plastic pallet according to claim 4, wherein: the anti-skid cushion block (12) comprises a fixed seat (121) and a rubber pad (122) arranged on the fixed seat (121); the lower surface of the base (2), the upper surface and the lower surface of the panel (1) are provided with mounting holes (13) for the interference insertion of the fixing seats (121).

6. The non-slip plastic tray according to claim 5, wherein: one end of the fixed seat (121) inserted into the mounting hole (13) is provided with a truncated cone-shaped chuck (14); the large-diameter end of the chuck (14) is inward and the diameter of the large-diameter end is larger than that of the fixed seat (121), and the diameter of the small-diameter end is smaller than that of the fixed seat (121).

7. The non-slip plastic tray according to claim 6, wherein: the peripheral wall of the fixed seat (121) is provided with an annular groove (15), the rubber pad (122) is arranged in a cover shape, and the opening end of the rubber pad is provided with a flange (16) which is embedded into the annular groove (15).

8. The slip-resistant plastic pallet according to any one of claims 1-7, wherein: the plastic used for manufacturing the anti-skid plastic tray is ultrahigh molecular weight high density polyethylene.

9. A method for manufacturing the anti-slip type plastic pallet according to any one of claims 2 to 7, characterized in that: the method comprises the following steps:

forming upper and lower sheets of the panel: carrying out plastic suction molding on the upper sheet of the panel in an upper sheet mold; after the steel pipe (3) is placed in a panel lower sheet die, placing the panel lower sheet into the panel lower sheet die for suction molding;

thirdly, thermal forming of upper and lower sheets of the panel: placing the formed panel upper sheet and the panel lower sheet into a panel forming die for pressurization and hot synthesis, and opening the die to take out the formed panel (1) after the forming time is reached;

forming upper and lower sheets of the base: carrying out plastic suction molding on the base upper sheet in an upper sheet mold; after the steel pipe (3) is placed in a base lower sheet die, placing the base lower sheet into the base lower sheet die for suction molding and forming;

sixthly, hot forming of upper and lower sheets of the base: putting the formed upper base sheet and the lower base sheet into a base forming die for pressure heat sealing, and opening the die to take out the formed base (2) after the forming time is up;

seventhly, carrying out hot-melt welding on the panel and the base: heating the contact surface of the panel (1) and the base (2) by a hot melting welding machine, adhering the panel (1) and the base (2) after the surfaces of the panel (1) and the base (2) are melted, and fixing the panel (1) and the base (2) after cooling to obtain the anti-skid plastic tray;

10. The manufacturing method of the anti-slip type plastic tray according to claim 9, wherein: in the third step and the sixth step, in the process of pressure heat sealing, compressed air is introduced into the cavity between the upper sheet of the panel and the lower sheet of the panel, and compressed air is introduced into the cavity between the upper sheet of the base and the lower sheet of the base; and the compressed air is discharged before the die is opened.