CN216127833U

CN216127833U - Broadside paper cutlery box and mould thereof

Info

Publication number: CN216127833U
Application number: CN202121275494.6U
Authority: CN
Inventors: 张显武
Original assignee: Pingyang Bonjee Machinery Co ltd
Current assignee: Pingyang Bonjee Machinery Co ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2022-03-25
Anticipated expiration: 2031-06-08

Abstract

The utility model relates to the field of carton forming, and discloses a broadside paper lunch box and a die thereof, wherein the broadside paper lunch box comprises a bottom plate and side plates surrounding the bottom plate, and is characterized in that: a corner folding plate is arranged between the adjacent side plates, the upper edges of the side plates and the corner folding plate are folded outwards to form a first surrounding edge and a second surrounding edge respectively, two sides of the second surrounding edge are lapped on the first surrounding edge and are fixedly connected with the first surrounding edge, and the first surrounding edge and the second surrounding edge are sequentially connected to form a horizontal bearing surface; the die comprises an upper die and a lower die, a forming cavity is arranged in the lower die, and the upper die is matched with the lower die; the first surrounding edge and the second surrounding edge are subjected to heat sealing, so that the strength of the surrounding edges can be enhanced, a finished horizontal bearing surface is formed, the paper lunch box is more convenient to take and use, and the folded side plates and the folded angle plates are subjected to heat sealing and reinforcing through the heating assembly, so that the whole paper box is high in strength and low in cost.

Description

Broadside paper cutlery box and mould thereof

Technical Field

The utility model relates to the field of carton forming, in particular to a wide-edge paper lunch box and a die thereof.

Background

The fast food needs to have a plurality of lunch boxes for containing meal and dishes, most dinner plates in the prior art are recycled, but have disposable requirements, and are generally formed by injection molding of plastic materials, and with the further advancement of the environmental protection concept, the plastic dinner plates with low cost have the defects that harmful substances are generated when hotter meal is met, and the plastic dinner plates with better quality also have the problems of nondegradable pollution to the environment, so better and lower-cost substitutes are needed; the use of paper lunch-box has been very general, so need the dinner plate now, adopt paper class shaping, the production is used for disposable, and does not have the shaping mode that chemical substances such as any glue come to connect both to guarantee with low costs, also environmental protection more.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a wide-edge paper lunch box and a die thereof.

In order to solve the technical problem, the utility model is solved by the following technical scheme:

the utility model provides a broadside paper cutlery box, includes the bottom plate and centers on the curb plate around the bottom plate, is equipped with the angle folding board between the adjacent curb plate, and the top edge of curb plate and angle folding board all turns over outwards and turns over and forms first surrounding edge and second surrounding edge respectively, the both sides overlap joint of second surrounding edge on first surrounding edge and with first surrounding edge fixed connection, first surrounding edge, second surrounding edge link to each other in proper order and form horizontally bearing surface.

Preferably, the outer edges of the first and second peripheral edges are folded down to form reinforcing edges. The reinforcing edge and the surrounding edge groove can enable a user to take the glass conveniently, and the glass can be held on the frame part, so that the glass is more sanitary and is more convenient to take and place during use.

Preferably, the outer edge of the second skirt is arcuate. The appearance is more beautiful.

Preferably, the gusset is gradually widened from the bottom to the top. The folded angle plate can be triangular or inverted trapezoidal.

Preferably, the side panels are folded inwardly into contact with the outer side walls of the gusset or the gusset is folded bilaterally into contact with the outer side walls of the side panels. The structure of inside folding can make cutlery box intensity higher and stable in quality, uses the slice that just an organic whole cut originally, makes itself fixed between curb plate and the folded angle board just connected need not materials such as glue, and the fixed effectual between one step can the machine-shaping while lunch box limit and limit, has controlled the processing cost also lower when having guaranteed the quality of cutlery box.

A mould for forming a wide-edge paper lunch box comprises an upper mould and a lower mould, wherein a forming cavity is arranged in the lower mould, the upper mould is matched with the lower mould, the upper mould is provided with a boss, the cross section of the boss is octagonal, the lower mould is provided with a female mould, the forming cavity is arranged in the female mould, and the forming cavity is matched with the boss in shape; the die is outer along all having relative side in horizontal, vertical, is equipped with the transition limit between the adjacent side, and the die is provided with at least one recess, and the recess forms the opening on the transition edge, is provided with heating element in the recess, and heating element has the first heat conduction plane with transition upper surface parallel and level.

Preferably, the transition edge is connected with a polygonal side wall of the female die, and the width of the polygonal side wall is gradually widened from bottom to top.

Preferably, the heating assembly further has a second heat conducting plane flush with the polygonal sidewall surface. The polygonal sidewall herein refers to a triangular or trapezoidal sidewall.

Preferably, the heating assembly comprises a metal block and a heating element, a mounting hole is formed in the upper portion of the metal block, the heating element is arranged in the mounting hole, the metal block is embedded in the groove, and the outer surface of the metal block is flush with the surface of the female die. Heating element can be elements such as heating wire, electric plate, and the metal block of heat conduction can be to the heat-seal between the first surrounding edge and the second surrounding edge of box body side under heating element's effect, and the heat-seal through first surrounding edge and second surrounding edge is in addition gone up the mutually supporting of mould lower mould, and folding each other between gusset and the curb plate can let the cutlery box just can fixed shaping in the heat-seal on the surrounding edge.

Preferably, the heating element is a heating wire wound around an inner wall of the mounting hole.

Preferably, the bottom plate is provided with a crease between the side plates, the distance between the crease of each side plate and the outer edge of the side plate is equal, and the distance between the top angle of the overlapping piece and the outer edge of the overlapping piece is smaller than the distance between the crease of the side plate and the outer edge of the side plate. Is provided with

A forming die for a paper lunch box is used for processing the paper die and comprises an upper die and a lower die, wherein a forming cavity is arranged in the lower die, the upper die is matched with the lower die, the upper die is provided with a boss, the cross section of the boss is octagonal, the side surface of the boss comprises a side table surface and connecting surfaces, and the connecting surfaces and the side table surface are arranged alternately; an elastic female die for accommodating the boss is arranged in the lower die.

Preferably, the edge of the elastic female die is provided with a guiding and edge pressing mechanism, the guiding and edge pressing mechanism is provided with a smooth inner side face, the radian of the inner surface of the guiding and edge pressing mechanism is consistent with that of the outer surface of the connecting face, so that the side plates can be folded along a fixed track, and deviation is avoided to form a poor-quality lunch box.

Preferably, four guiding and edge pressing mechanisms are arranged, the guiding and edge pressing mechanisms correspond to the connecting surfaces one to one, and when the upper die and the lower die are pressed, the guiding and edge pressing mechanisms slide along the connecting surfaces. The side plate can be folded upwards along the crease preset by the paper die by the guiding and edge pressing mechanism during processing, so that the superposition position of the superposed sheet cannot deviate, the side plate of the paper die is tightly attached to the connecting surface, the fixing of the folding part of the lunch box is ensured, and the forming quality of the lunch box is ensured.

Preferably, the two sides of the connecting surface are respectively provided with a groove, the grooves are positioned at the bottoms of the bosses, the shapes of the grooves are triangular, and the grooves are used for accommodating the lamination sheets. The groove can enable the overlapping part at the position of the overlapping sheet to be accommodated in the groove, and the groove structure can enable the surface of the processed lunch box to keep smooth due to the thicker thickness of the overlapping part.

Preferably, the side surface of the upper die extends downwards and forms a channel with the boss. The channel is used for turning the side plate outwards.

Due to the adoption of the technical scheme, the utility model has the remarkable technical effects that: the lunch box disclosed by the utility model is matched with stamping equipment commonly used for processing in the field, but the strength of the surrounding edge can be enhanced by carrying out heat sealing between the first surrounding edge and the second surrounding edge, so that a finished horizontal bearing surface is formed, the paper lunch box is more convenient to take and use, and the whole strength of the carton is high by carrying out heat sealing and reinforcing between the folded side plates and the angle folding plates through the heating assembly; the disposable lunch box is produced by one-step pressing and direct forming; the formed carton is more environment-friendly by a hot-press forming mode without operations such as gluing, and can be used for packing foods such as vegetables, fruits and salad, and the working procedures are also reduced; the more widening and stable surrounding edge is formed after the forming, and the price of the horizontal surrounding edge and the vertical angle folding plate can be simultaneously carried out by the group of heating wires, so that the energy can be saved, and the production cost can be reduced.

Drawings

Fig. 1 is a schematic structural view of the paper lunch box of the present invention.

Fig. 2 is a plan view of the paper cutlery box of the present invention.

Fig. 3 is a schematic view of the structure of the mold.

Fig. 4 is a schematic structural view of the lower mold.

The names of the parts indicated by the numerical references in the above figures are as follows: the heating device comprises a base plate 1, a side plate 2, a corner plate 3, a first surrounding edge 21, a second surrounding edge 22, an upper die 4, a boss 41, a lower die 5, a female die 51, a heating assembly 52, a mounting hole 53 and a polygonal side wall 54.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Examples

The utility model provides a broadside paper cutlery box, as shown in the figure, includes bottom plate 1 and the curb plate 2 around bottom plate 1, is equipped with folded angle board 3 between the adjacent curb plate 2, and the top edge of curb plate 2 and folded angle board 3 all turns over outwards and turns over and form first surrounding edge 21 and second surrounding edge 22 respectively, and the both sides overlap joint of second surrounding edge 22 is on first surrounding edge 21 and with first surrounding edge 21 fixed connection, and first surrounding edge 21, second surrounding edge 22 link to each other in proper order and form the horizontally and hold the supporting surface.

The outer edges of the first surrounding edge 21 and the second surrounding edge 22 are turned downwards to form reinforcing edges.

The outer edge of the second peripheral edge 22 is curved.

The width of the gusset 3 gradually becomes wider from bottom to top.

The side plate 2 is folded inwards to be contacted with the outer side wall of the angle folding plate 3 or the angle folding plate 3 is folded towards two sides to be contacted with the outer side wall of the side plate 2.

A paper lunch box mould is used for forming a wide-edge paper lunch box and comprises an upper mould 4 and a lower mould 5, wherein a forming cavity is arranged in the lower mould 5, the upper mould 4 is matched with the lower mould 5, the upper mould 4 is provided with a boss 41, the cross section of the boss 41 is octagonal, the lower mould 5 is provided with a female mould 51, the forming cavity is arranged in the female mould 51, and the shapes of the forming cavity and the boss 41 are matched with each other; the outer edge of the female die 51 is provided with opposite side edges in the horizontal direction and the vertical direction, a transition edge is arranged between the adjacent side edges, the female die 51 is provided with at least one groove, the groove forms an opening on the transition edge, a heating assembly 52 is arranged in the groove, and the heating assembly 52 is provided with a first heat conduction plane which is flush with the upper surface of the transition edge.

The transition edge is connected with a polygonal side wall 54 of the female die 51, and the width of the polygonal side wall 54 is gradually widened from bottom to top.

The heating assembly 52 also has a second heat conducting plane flush with the surface of the polygonal sidewall 54.

The heating component 52 comprises a metal block and a heating element, a mounting hole 53 is formed above the metal block, the heating element is arranged in the mounting hole 53, the metal block is embedded in the groove, and the outer surface of the metal block is flush with the surface of the female die 51.

The heating element is a heating wire wound around the inner wall of the mounting hole 53.

During processing, the paper mold of the paper lunch box is placed on the lower mold 5 to be pressed and molded, the processing and forming equipment of the upper mold 5 and the lower mold 5 is in the prior art and can be pressed, and the side plates 2 are turned inwards under the action of the upper mold 5 and the lower mold 5 to be in contact with the angle folding plates 3. The paper mould is cut and leaves the indentation, during the pressfitting, processing is heated through the heating element, boss 41 pushes down, push down the centre of paper mould and form the accommodation space in the centre, the direction surrounding edge turns up along the transition limit of lower mould 5 simultaneously, the curb plate 2 that will correspond the junction surface 412 department turns up, because curb plate 2 erects, its outer fringe is along the crease infolding, when going up mould 4 and lower mould 5 complete pressfitting, the dog-ear of infolding is laminated with dog-ear board 3, the metal block can be to carrying out the heat-seal between first surrounding strip and the second surrounding strip, through fixing before first surrounding strip and the second surrounding strip, the box body shaping, and the folding that passes through curb plate 2 behind four hem can be consolidated through the heat-seal of metal block, later mould 4 lower mould 5 separation. After the processing is finished, the lunch box popped out of the module which is formed by punching can be popped out through the matching action of the rebound spring and the lower support plate on the station, so that the lunch box is separated from the punching die quickly. The formed lunch box is coated with a coating and has a waterproof function.

In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.

Claims

1. The utility model provides a broadside paper cutlery box, includes the bottom plate and surrounds curb plate around the bottom plate, its characterized in that: a corner plate is arranged between the adjacent side plates, the upper edges of the side plates and the corner plate are turned outwards to form a first surrounding edge and a second surrounding edge respectively, the two sides of the second surrounding edge are overlapped on the first surrounding edge and fixedly connected with the first surrounding edge, and the first surrounding edge and the second surrounding edge are sequentially connected to form a horizontal bearing surface.

2. A broadside paper cutlery box as claimed in claim 1, wherein: the outer edges of the first surrounding edge and the second surrounding edge are folded downwards to form reinforcing edges.

3. A broadside paper cutlery box as claimed in claim 1, wherein: the outer edge of the second surrounding edge is arc-shaped.

4. A broadside paper cutlery box as claimed in claim 1, wherein: the width of the angle plate is gradually widened from bottom to top.

5. A broadside paper cutlery box as claimed in claim 1, wherein: the side plates are folded inwards to be contacted with the outer side walls of the corner plates or the corner plates are folded towards two sides to be contacted with the outer side walls of the side plates.

6. A mold for forming the broadside paper lunch box as claimed in any one of claims 1-5, comprising an upper mold and a lower mold, wherein a forming cavity is arranged in the lower mold, and the upper mold is matched with the lower mold, characterized in that: the upper die is provided with a boss, the cross section of the boss is octagonal, the lower die is provided with a female die, a forming cavity is arranged in the female die, and the forming cavity is matched with the boss in shape; the die is outer along all having relative side in horizontal, vertical, is equipped with the transition limit between the adjacent side, and the die is provided with at least one recess, and the recess forms the opening on the transition edge, is provided with heating element in the recess, and heating element has the first heat conduction plane with transition upper surface parallel and level.

7. A mould according to claim 6, characterized in that: the transition edge is connected with the polygonal side wall of the female die, and the width of the polygonal side wall is gradually widened from bottom to top.

8. A mould according to claim 6, characterized in that: the heating assembly also has a second heat conducting plane flush with the polygonal sidewall surface.

9. A mould according to claim 6, characterized in that: the heating assembly comprises a metal block and a heating element, a mounting hole is formed in the upper portion of the metal block, the heating element is arranged in the mounting hole, the metal block is embedded in the groove, and the outer surface of the metal block is flush with the surface of the female die.

10. A mould according to claim 6, characterized in that: the heating element is a heating wire wound on the inner wall of the mounting hole.