阅读说明：本技术 一种便当盒的制造方法 (Manufacturing method of lunch box ) 是由 黄平 于 2021-07-01 设计创作，主要内容包括：本发明提供了一种便当盒的制造方法,属于便当盒制造领域,它解决现有木质便当盒易漏水、漏油问题,S1：在木板的两侧覆上膜；S2：将覆有膜的木板送入冲切设备,由刀模对覆有膜的木板进行冲切,得到冲切后的板体；S3：将冲切后的板体放入定模,然后动模向定模靠近并合模,在合模的过程中,将冲切后的板体压成斗状件,斗状件包括底板以及设置于底板周围的侧板；合模后,斗状件的内侧面贴合在动模的外表面,底板和侧板的连接处与定膜之间形成有第一空腔,相邻侧板之间与定膜、动模之间形成有第二空腔,第一空腔和第二空腔连通；S4：向第一空腔和第二空腔内注塑并填充第一空腔和第二空腔；S5：最后脱模得到盒体。盒体防漏水、漏油的效果好。(The invention provides a manufacturing method of a lunch box, belongs to the field of manufacturing of lunch boxes, and solves the problems that the existing wooden lunch box is easy to leak water and oil, and S1: coating films on two sides of the wood board; s2: feeding the wood board coated with the film into punching equipment, and punching the wood board coated with the film by using a cutting die to obtain a punched board body; s3: putting the punched plate body into a fixed die, then enabling a movable die to approach the fixed die and closing the die, and pressing the punched plate body into a bucket-shaped part in the die closing process, wherein the bucket-shaped part comprises a bottom plate and side plates arranged around the bottom plate; after the die is closed, the inner side surface of the bucket-shaped part is attached to the outer surface of the movable die, a first cavity is formed between the joint of the bottom plate and the side plate and the fixed film, a second cavity is formed between the adjacent side plates, the fixed film and the movable die, and the first cavity is communicated with the second cavity; s4: injecting and filling the first cavity and the second cavity into the first cavity and the second cavity; s5: and finally, demolding to obtain the box body. The box body has good effects of preventing water leakage and oil leakage.)

1. A method for manufacturing a lunch box, comprising the steps of:

step S1: coating films on two sides of the wood board;

step S2: feeding the wood board coated with the film into punching equipment, and punching the wood board coated with the film by using a cutting die to obtain a punched board body;

step S3: putting the punched plate body into a fixed die, then enabling a movable die to approach the fixed die and closing the die, and pressing the punched plate body into a bucket-shaped part (13) in the die closing process, wherein the bucket-shaped part (13) comprises a bottom plate (3) and side plates (4) arranged around the bottom plate (3);

after die assembly, the inner side surface of the bucket-shaped part (13) is attached to the outer surface of the movable die, a first cavity is formed between the joint of the bottom plate (3) and the side plate (4) and the fixed film, a second cavity is formed between the adjacent side plates (4) and between the fixed film and the movable die, and the first cavity is communicated with the second cavity;

step S4: injecting and filling the first cavity and the second cavity into the first cavity and the second cavity;

step S5: finally, demoulding to obtain the box body (1).

2. The method for manufacturing a lunch box as claimed in claim 1, wherein in step S1, the film is glassine paper.

3. The manufacturing method of a lunch box as claimed in claim 2, wherein in step S1, glassine paper is coated on both sides of the wood board at a temperature of 1000 ℃.

4. A manufacturing method of a lunch box as claimed in claim 1, wherein in the step S3, the bottom plate (3) has a first notch (11), and the first notch (11) is punched and formed by the knife die in the step S2.

5. A method as claimed in claim 4, characterized in that said first notch (11) is curved.

6. A manufacturing method of lunch box as claimed in claim 4, wherein the top ends of the side plates (4) have second notches (12), and the second notches (12) are formed by die cutting in step S2.

7. A manufacturing method of lunch box as claimed in claim 6, wherein in step S3, an opening (5) is formed between adjacent side plates (4), and the opening (5) is formed by punching a reserved hole with a die in step S2 and then bending and pressing the punched plate body into a bucket-shaped member (13).

8. A method as claimed in claim 7, characterized in that said first notch (11) is located at one end of the opening (5) and said second notch (12) is located on either side of the other end of the opening (5).

9. A manufacturing method of a lunch box as claimed in claim 1, wherein in step S3, an indentation (9) is formed on the outer surface of the bucket (13) in the process of pressing the punched plate body into the bucket (13).

10. The manufacturing method of a lunch box as claimed in claim 1, wherein said step S1 is preceded by step S0, step S0: cutting the poplar wood to obtain an original wood board, and then performing frosting treatment on the two side surfaces of the original wood board to obtain the wood board.

Technical Field

The invention belongs to the field of lunch box manufacturing, and particularly relates to a manufacturing method of a lunch box.

Background

With the development of society and the prevalence of fast food culture, more and more convenience stores can sell the food conveniently, and the guests can eat the food after buying in the stores by microwave heating, and can discard the lunch box after eating. The existing convenience stores have a lot of lunch boxes made of wood materials, but after food is placed in the lunch boxes made of wood materials, water leakage and oil leakage are easy to occur.

Disclosure of Invention

A first object of the present invention is to provide a method for manufacturing a lunch box, which addresses the above-mentioned problems in the prior art.

The purpose of the invention can be realized by the following technical scheme: a method for manufacturing a lunch box, comprising the steps of:

step S1: coating films on two sides of the wood board;

step S2: feeding the wood board coated with the film into punching equipment, and punching the wood board coated with the film by using a cutting die to obtain a punched board body;

step S3: putting the punched plate body into a fixed die, then enabling a movable die to approach the fixed die and closing the die, and pressing the punched plate body into a bucket-shaped part in the die closing process, wherein the bucket-shaped part comprises a bottom plate and side plates arranged around the bottom plate;

after die assembly is carried out, the inner side surface of the bucket-shaped part is attached to the outer surface of the movable die, a first cavity is formed between the joint of the bottom plate and the side plate and the fixed film, a second cavity is formed between the adjacent side plates, the fixed film and the movable die, and the first cavity is communicated with the second cavity;

step S4: injecting and filling the first cavity and the second cavity into the first cavity and the second cavity;

step S5: and finally, demolding to obtain the box body.

In the above-described manufacturing method of the lunch box, in the step S1, the film is glassine paper.

In the above-described manufacturing method of the lunch box, the glassine paper is coated on both sides of the wood board at a temperature of 1000 c in the step S1.

In the above-described manufacturing method of the lunch box, in the step S3, the bottom plate has a first notch which is punched and formed by the cutter die in the step S2.

In the above-described method of manufacturing a lunch box, the first notch has an arc shape.

In the above manufacturing method of the lunch box, the two ends of the top of the side plate have the second notches, and the second notches are punched and formed by the cutter die in the step S2.

In the manufacturing method of the lunch box, in the step S3, an opening is formed between the adjacent side plates, and the opening is formed by punching a reserved opening by the cutting die in the step S2, and then bending and pressing the punched plate body into a bucket-shaped member.

In the above-mentioned method for manufacturing a lunch box, the first notch is located at one end of the opening, and the second notch is located at both sides of the other end of the opening.

In the above-described manufacturing method of the lunch box, in step S3, in the process of pressing the punched plate body into the bucket, the indentation is formed on the outer surface of the bucket.

In the above-described manufacturing method of the lunch box, the step S1 is preceded by a step S0, a step S0: cutting the poplar wood to obtain an original wood board, and then performing frosting treatment on the two side surfaces of the original wood board to obtain the wood board.

Compared with the prior art, the lunch box body prepared by the method has high overall strength and good water and oil leakage prevention effects.

Drawings

FIG. 1 is a schematic view of a bucket of the present invention;

FIG. 2 is a schematic view of the structure of the reinforcing strips, connecting strips and indentations of the present invention;

FIG. 3 is a schematic structural view of the cartridge of the present invention;

FIG. 4 is a schematic view of the structure of a support layer and a protective layer of the present invention;

fig. 5 is a schematic structural view of the box cover of the present invention.

In the figure, 1, a box body; 2. an accommodating chamber; 3. a base plate; 4. a side plate; 5. an opening; 6. a connecting strip; 7. a support layer; 8. a protective layer; 9. indentation; 10. a reinforcing strip; 11. a first notch; 12. a second notch; 13. A bucket; 14. and (7) a box cover.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 3, a method for manufacturing a lunch box includes the steps of:

step S0: cutting the poplar wood to obtain an original wood board, and then performing frosting treatment on the two side surfaces of the original wood board to obtain the wood board. The frosting is performed to make the film and the wood board better and more closely fit during the film covering process in the subsequent step S1.

Step S1: coating films on two sides of the wood board;

the paper film is glassine paper which has the functions of high temperature resistance, water resistance, oil resistance and the like. Glassine paper was coated on both sides of the wood board at a temperature of 1000 ℃. The wood board and the glassine paper can be disinfected and sterilized at the high temperature of 1000 ℃, and the film is coated at the high temperature, so that the glassine paper and the wood board are combined more firmly and tightly, and the glassine paper is not easy to fall off. The combination between the glassine and the wood board does not need to add any other adhesive, and the glassine and the wood board are more environment-friendly without adding any adhesive.

Step S2: feeding the wood board coated with the film into punching equipment, and punching the wood board coated with the film by using a cutting die to obtain a punched board body;

the wood board covered with the film is punched by a cutting die to form a reserved opening, a first notch 11 and a second notch 12. The first notches 11 are located at four corners of the bottom plate 3 of the bucket-shaped part 13 formed in the subsequent step S3, the second notches 12 are located at two ends of the top of the side plate 4 of the bucket-shaped part 13 formed in the subsequent step S3, the first notches 11 are arc-shaped, the second notches 12 are irregular, and after the second notches 12 are formed in a punching mode, two ends of the top of the side plate 4 of the bucket-shaped part 13 are uneven. The purpose of forming the first notch 11 and the second notch 12 by punching is to facilitate the subsequent injection molding process in step S4, so that the plastic part formed after injection molding is better connected with the bucket-shaped part 13, the connection is tighter, and the plastic part is not easy to fall off from the bucket-shaped part 13. The purpose of the die-cutting to form the prepared openings is to facilitate bending and pressing the die-cut plate body into the hopper-shaped member 13 in the subsequent step S3, so as to form the corresponding openings 5, and the adjacent side plates 4 do not interfere with each other during the pressing process.

Step S3: putting the punched plate body into a fixed die, then enabling a movable die to approach the fixed die and closing the die, and pressing the punched plate body into a bucket-shaped part 13 in the die closing process, wherein the bucket-shaped part 13 comprises a bottom plate 3 and side plates 4 arranged around the bottom plate 3;

after die assembly, the inner side surface of the bucket-shaped part 13 is attached to the outer surface of the movable die, a first cavity is formed between the joint of the bottom plate 3 and the side plate 4 and the fixed film, a second cavity is formed between the adjacent side plates 4 and between the fixed film and the movable die, and the first cavity is communicated with the second cavity;

put into the cover half with the plate body after the die-cut earlier, then the movable mould is close to and the compound die to the cover half, at the in-process of compound die, the movable mould is bent the plate body and is pressed into bucket form 13, and form corresponding indentation 9 at the surface of bucket form 13, the existence of indentation 9 represents the movable mould and compacts the poplar material, density increase, its intensity is higher, thereby the holistic intensity of bucket form 13 has been increased, density increase makes and the density of the subsequent working of plastics that moulds plastics and form more approximate, thereby make the combination of bucket form 13 and working of plastics more firm, and make the combination between poplar material and the glassine more firm, and is waterproof, oil proof performance is better.

After forming the bucket shape, the adjacent side plate 4 has an opening 5. The first notch 11 is located at one end of the opening 5, and the second notch 12 is located at both sides of the other end of the opening 5.

After die assembly, the inner side surface of the bucket-shaped part 13 is attached to the outer surface of the movable die, a first cavity is formed between the joint of the bottom plate 3 and the side plate 4 and the fixed film, a second cavity is formed between the adjacent side plates 4 and between the fixed film and the movable die, and the first cavity is communicated with the second cavity;

step S4: injecting and filling the first cavity and the second cavity into the first cavity and the second cavity;

step S5: finally, demoulding to obtain the box body 1.

And (3) injecting and filling the first cavity and the second cavity into the first cavity and the second cavity, maintaining pressure, cooling and then demolding to obtain the box body 1, wherein the plastic part is positioned on the outer side of the bucket-shaped part 13. The plastic part comprises a connecting strip 6 and a reinforcing strip 10. Injecting plastic, maintaining pressure, cooling and demolding into the second cavity to form a connecting strip 6, wherein the opening 5 and the second gap 12 are covered by the connecting strip 6; and injecting plastic into the first cavity, maintaining the pressure and cooling, demolding to form a reinforcing strip 10, covering the joint between the bottom plate 3 and the side plate 4 by the reinforcing strip 10, communicating the first cavity with the second cavity, and covering the first notch 11 by the joint of the reinforcing strip 10 and the connecting strip 6.

As shown in fig. 1 to 5, the lunch box provided by the embodiment of the invention comprises a box body 1, wherein the box body 1 is provided with a containing cavity 2 for containing food, the box body 1 comprises a bottom plate 3 and side plates 4 arranged around the bottom plate 3, the bottom plate 3 and the side plates 4 surround to form the containing cavity 2, an opening 5 is arranged between adjacent side plates 4, a connecting strip 6 is formed at the opening 5 by injection molding, the bottom plate 3 and the side plates 4 both comprise a supporting layer 7 and protective layers 8 arranged on two sides of the supporting layer 7, the supporting layer 7 is made of wood, and the protective layers 8 are made of waterproof and oil-proof materials.

In further detail, the protective layer 8 is made of glassine paper. The glassine paper has the functions of high temperature resistance, water resistance, oil resistance and the like. The protective layer 8 is a protective film.

In more detail, the supporting layer 7 is made of poplar wood. Is natural and environment-friendly.

In more detail, the outer surfaces of the bottom plate 3 and the side plates 4 are provided with indentations 9.

In more detail, the side plate 4 and the bottom plate 3 are integrally connected, and a reinforcing strip 10 is formed at the joint of the side plate 4 and the bottom plate 3 in an injection molding mode. First breach 11 has been seted up to bottom plate 3, first breach 11 and opening 5 intercommunication, and first breach 11 is the arc, and the junction of strengthening strip 10 and connecting strip 6 covers first breach 11. The connecting strip 6 and the connecting strip 6 are connected by a reinforcing strip 10. The reinforcing bar 10 and the connecting bar 6 are integrally connected.

After the die assembly is carried out to form the bucket-shaped part 13, the corresponding bottom plate 3 and four side plates 4 are formed, the side plates 4 and the bottom plate 3 are integrally connected, openings 5 are formed between the adjacent side plates, and then the injection molding process is carried out to form plastic parts, namely the connecting strips 6 and the reinforcing strips 10. The connecting strip 6 covers the opening 5, the reinforcing strip 10 covers the joint of the side plate 4 and the bottom plate 3, and the joint of the reinforcing strip 10 and the connecting strip 6 covers the first notch 11. The connecting strip 6 and the reinforcing strip 10 are integrally connected.

The connecting strips 6 and the reinforcing strips 10 made of plastic improve the strength of the whole box body 1. Because connecting strip 6 covers opening 5, so oil, water can not spill from opening 5 and first breach 11, and form bucket form 13 through the compound die, and bucket form 13's surface has the indentation and then moulds plastics, make connecting strip 6 and enhancement strip 10 and bottom plate 3, the connection of curb plate 4 is more firm, waterproof and oilproof performance is better, strengthen strip 10 and cover the junction at curb plate 4 and bottom plate 3, make difficult disconnection between curb plate 4 and the bottom plate 3, the holistic intensity of box body 1 is higher. The opening 5 is provided to prevent interference between the adjacent side plates 4 during the process of clamping the mold to form the bucket 13. First breach 11 is located bottom plate 3's corner, and the purpose that sets up curved first breach 11 is in order to mould plastics the in-process for the combination of bottom plate 3 and working of plastics is inseparabler, makes the working of plastics be difficult for droing.

In more detail, the two ends of the top of the side plate 4 are both provided with second notches 12. The second gap 12 is irregular, and the two ends of the top of the side plate 4 of the bucket-shaped piece 13 are uneven. The purpose is in order to form the in-process of connecting strip 6 at moulding plastics for curb plate 4 and connecting strip 6's combination is inseparabler, makes connecting strip 6 be difficult for droing, thereby with whole working of plastics (connecting strip 6 and enhancement strip 10 promptly, connecting strip 6 and enhancement strip 10 integrated connection) combination inseparabler, the working of plastics is difficult for droing.

In more detail, the box cover 14 is further included, and the box cover 14 is arranged above the box body 1. The lid 14 is made of transparent plastic.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although a large number of terms are used here more, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.