Technology for square box without tool marks on outer surface

Abstract

According to the invention, an innovative double-high-low-line cutting die design and a hidden buckle position are combined with a V-groove machine to preferably select a line V-groove, so that the packaging box which is free of any buckle tool mark or groove on the surface and is high, square and shaped can be obtained, the attractiveness of the box is improved, the production cost is greatly reduced, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to a packaging box with high squareness made by an ordinary cutting die, wherein no buckles or cutting lines can be seen on each side of the box, in particular, a box with a non-top and bottom cover structure (applied in industries such as gifts, mobile phones, express packaging, jewelry, accessories, cosmetics, clothing, shoes, glasses, food, health products, medicines, household goods, home decoration, leather goods, stationery, computers, digital products, home appliances, speakers, etc.). Background Art

[0002] 1. Traditional packaging boxes include paper boxes, plastic boxes, metal boxes, fiber boxes and other products. There is a large gap at the buckle of the traditional plastic box and paper box flip cover, which is generally >0.5mm, which seriously affects the appearance of the product. Figure 4 ①, and the buckle position cannot be hidden, there are always various knife marks on at least one surface. Figure 4 ②.

[0003] 2. Traditional knife molds all use wood as the base plate, and the laser digs grooves on the wood. Due to the uneven characteristics of the wood, the depth of the laser groove is difficult to accurately control. The blade is embedded in the groove, and the gap cannot be controlled. Figure 1 ④, the blade is easily misplaced and uneven, resulting in some places being able to cut but not others, large errors, and no precise knife line can be obtained at all.

[0004] 3. The traditional knife line adopts a single high and low line design, such as Figure 3 b, the top / bottom cover fold position ② is slightly higher than the swing cover fold position ①, ① and ③ are of equal height, and the height difference between ② and ③ causes the cross section ④ of the top / bottom cover ⑥ to be unable to be covered and completely exposed outside the box, such as Figure 3 The c of the box makes it impossible to hide the buckle position, which seriously affects the appearance of the box. In addition, the front and back printing heights of traditional hexahedral boxes are different. Figure 3 The front ⑨ and back ⑧ of the box have different heights, which affects the aesthetics of the box. Figure 6 This is the knife line plan of the traditional box. Figure 6 ③ is the high line, ④⑤⑥ are all low lines of the same height.

[0005] 4. There are some so-called square box patents on the market, all of which use precision carving or etching die. The cost of this die is extremely high, thousands of yuan, which greatly increases the cost and processing complexity of the box. This solution is currently in the abortion stage and cannot be mass-produced at all. It is not practical at all. Precision carving die pressing cannot solve the problem of V-groove. It is just pressed, and the contents in the groove are not discharged. They are blocked at the crease and cannot come out. It is difficult to fold the box, and things have to be taken out one by one from the crease manually, which seriously affects production efficiency.

[0006] 5. There have been boxes on the market that were made entirely with V-grooving machines. However, since the V-grooving machine tool has a double-blade structure, it cannot jump and can only go from one end of the material to the other end. Figure 8 ④, the tool cannot be lifted in the middle, attached Figure 8 ⑤, this kind of intermittent line V groove machine cannot cut out, attached Figure 8 This is a box made by a V-groove machine. Since there is no height line, as long as the lid is buckled, the lid will be arched, and the height line of the box cannot be achieved. All V-groove lines can only be designed to be the same height. Figure 8 ①, ②, and ③ are at the same height, which causes the lid to arch up when it is buckled, which has no aesthetic appeal. This is because a simple V-groove machine cannot make the height lines of the box. For ordinary boxes, ③ is higher than ① and ②, and a V-groove machine cannot process it. It can only process it if the creases on all sides are the same height, unless the box material is extremely thin, such as 0.1mm thick paper. The thickness of traditional paper boxes is 0.4-0.5mm or even higher. Without height lines, the arching problem cannot be solved. Summary of the invention

[0007] In order to simplify the production process and reduce production costs, the present invention adopts a cutting die for a plastic base or a metal base, and does not use a cutting die for a wooden base. The innovative double high and low line design and the special buckle line design, combined with the assistance of a V-groove machine, can achieve a perfect square box with no knife marks on each surface of the box, making the box more beautiful.

[0008] Technical solution:

[0009] Since the V-groove machine cannot achieve high and low lines, only some crease lines are solved by the V-groove machine, and the other crease lines are solved by traditional creasing lines.

[0010] By using the innovative double high and low line knife line structure as shown in Figure 2 a, the redesigned buckle structure is used to achieve a precise box with no knife marks on the outer surface of the box. The buckle position knife line is set at the left and right ends of the tongue where the top / bottom cover is connected as shown in Figure 2 ①, or set inside the outer frame of the tongue as shown in Figure 2 Figure 7 ⑨, ⑩, The vertical distance between the nearest point on the buckle position knife line and the fold of the tongue is greater than or equal to 2 times the thickness of the box material. If it is set at the left and right ends of the tongue, it will be cut from the left and right ends of the tongue and move towards the middle of the tongue. The total length of the single-sided knife line is less than 1 / 2 of the left and right width of the tongue. The knife line can be parallel to the fold of the tongue or inclined at 0-90 degrees. The knife line can be a straight line, a wavy line, a serrated line or other special-shaped lines that can be cut, such as a butterfly shape. Figure 7 ③、The petals are shaped like Figure 7 ④, etc., can be a symmetrical design or a mixed line of asymmetrical design, such as Figure 7⑧; if the buckle position knife line is set inside the outer frame of the tongue, there is a certain distance from the left and right ends of the tongue, the distance is less than 1 / 2 of the left and right width of the tongue, the buckle position knife line is in the shape of an L shape such as Figure 7 ⑨, crescent-shaped Figure 7 ⑩, half-moon shaped like Figure 7 of Or any non-closed line shape that can hold the flap, such as Figure 7 of When folding the box, you only need to cut the L-shaped or crescent-shaped knife line or any shape of knife line on the tongue along the crease line. By pressing out, you can get ear-like protrusions, and the tongue can be inserted to clamp the swing cover; the knife line can be a single knife line, or a combination of multiple knife lines can be used to make the box buckled more tightly; using an innovative double high and low line structure, the printing height of the front and back of the box is the same, both higher than the crease height of the swing covers at both ends. Specific implementation methods

[0012] 1. Innovative structure of knife line and buckle position:

[0013] like Figure 3 b, the traditional box adopts a single high-low line structure, that is, the height of ② is higher than ③ and ①, and the height of ③ and ① is the same. The knife line adopts a double high-low line structure as shown in Figure 2a, that is, the height of the top / bottom cover fold ② and ③ are the same, both higher than the height of the swing cover fold ④. The buckle changes the traditional design and designs the buckle knife line on the tongue. Figure 2a ① and Figure 7 , the vertical distance from the nearest point of the knife line to the fold of the tongue is greater than or equal to 2 times the thickness of the box material, so that the buckle position is hidden. The knife line of the buckle position can be a knife line of any shape, such as L-shaped, crescent-shaped, semicircular, straight, wavy, petal-shaped, butterfly-shaped. The knife line can be inside the tongue or on the left and right sides of the tongue. The knife line can be a single knife line or a combination of multiple knife lines to make the box buckle tighter;

[0014] 2. Precision knife mold technology: Use precision knife molds (carving knife molds or etching knife molds) with plastic or metal bases instead of traditional knife molds with wooden bases to obtain more precise and complex knife lines, such as the attached Figure 5 As shown, the laser die cutting of the ordinary wooden base cannot produce the attached Figure 5 Precision knife line diagram, focus on Figure 5 ⑨ and ⑩, the fine position of the ordinary wooden base die can not be cut out, the wooden base die can only cut out the attached Figure 6 Knife line diagram;

[0015] 3. V-groove process: such as Figure 5 , the continuous indentation lines are grooved by V-groove machine, the 4 vertical lines of the box are continuous indentation lines using V-groove technology, and other indentation lines use ordinary indentation lines;

[0016] 4. Folding box: When folding the box, just Figure 2a Press the knife line of the buckle position of the tongue inward to deform it, or Figure 7 of The indentation line shown is pressed out to form a certain bulge, and then the plug tongue is inserted into the box, and the buckle can automatically lock the swing cover, firmly and tightly. Due to the double high and low line structure, it can perfectly cover the buckle line on the plug tongue and Figure 3 ④, making the box more beautiful.

[0017] The box can be made into a paper box, a plastic box, a metal box, a fiber box and a box made of a certain flexible material. Other protrusions or grooves can also be made on the tongue to obtain a multiple snap-on effect, making the box buckled more tightly. The box shape can be: tetrahedron, hexahedron, special-shaped box with a swing cover, etc. It is used in gifts, mobile phones, express packaging, jewelry, accessories, cosmetics, clothing, shoes, glasses, food, health products, medicines, household goods, home decoration, leather goods, stationery, computers, digital products, home appliances, speakers and other industries.

[0018] Beneficial effects:

[0019] The present invention adopts an innovative hidden buckle design, a double high-low line structure and a V-groove machine combination method to achieve an aesthetic effect in which no knife marks or grooves can be seen on each surface of the box, and the box shape has a high squareness, no surface of the box is arched, and the box cover has no large gaps, thereby improving the quality of the packaging box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the accompanying drawings of the present invention, Figure 1 a is a traditional wood die, ① is a blade, ② is a wood board, ④ is the gap for laser engraving; b is a plastic or metal die, ③ is a plastic or metal base;

[0021] Figure 2 is a three-dimensional structure diagram of the knife line of the present invention, ① is the position of the buckle, ② is the crease line of the box cover, ③ is the position of the top of the front / back side of the box, ④ is the crease line position of the swing cover, ⑤ is the swing cover, and ⑥ is the insert tongue; Figure 2 b is the assembled effect of the box of the present invention.

[0022] Attached Figure 3 ① is the crease line of the swing cover, ② is the crease line of the top / bottom cover, ③ is the top position of the front / back of the box, ④ is the cross section of the top / bottom cover, ⑤ is the swing cover, ⑥ is the top and bottom cover, ⑦ is the tongue;

[0023] Attached Figure 4 For the various boxes on the market, ① is a huge gap, and ② is various knife lines.

[0024] Attached Figure 5The knife line plane structure diagram of the present invention, ① is the front of the box, ② is the back of the box, ③ is the height of the front box, ④ is the height of the back box, ⑤ and ⑥ are the other two faces, ⑦ is the tongue, ⑧ is the swing cover, ⑨, ⑩, It is a tiny position that ordinary wood board cutters cannot cut. ③ and ④ are equal in height. Two sides are high and two sides are low, which is called double high-low line, that is, ⑤ and ⑥ are low lines, and ③ and ④ are high lines.

[0025] Attached Figure 6 This is the plane structure diagram of most knife lines on the market, ① is the front of the box, ② is the back of the box, ③ is the height of the front box, ④ is the height of the back box, ⑤ and ⑥ are the other two sides, ⑦ is the plug tongue, ⑧ is the swing cover, ③ and ④ are not equal in height, ③ is higher than ④, only one side is high, called a single high-low line, that is, ③ is the high line, ④⑤⑥ are all low lines with the same height.

[0026] Attached Figure 7 ① is a parallel straight line knife line, ② is an oblique straight line knife line, ③ is a butterfly-shaped knife line, ④ is a petal-shaped knife line, ⑤ is a wavy knife line, ⑥ is a zigzag knife line, ⑦ and ⑧ are mixed knife lines, ⑨ is an L-shaped knife line, and ⑩ is a crescent-shaped knife line. It is a half-moon knife line. For a knife line of any shape, The crease line.

[0027] Attached Figure 8 For a box made by a full-process V-groove machine, ① is the cut on the back of the box, ② is the indentation line on the front of the box, ③ is the indentation line for the swing cover, ④ is the continuous V line that the V-groove machine can only make, and ⑤ is the line that the V-groove machine cannot make with intervals.

Claims

1. A technical method for realizing a square box with no knife marks on the outer surface, characterized by: Applicable to paper boxes, plastic boxes, metal boxes, fiber boxes and boxes made of certain flexible materials without top and bottom cover structures. There are no knife lines, grooves or other structures on all the outer surfaces of the boxes. Buckle knife lines are set at the left and right ends of the tongue connected to the top / bottom cover or inside the outer frame of the tongue. The vertical distance between the nearest point on the buckle knife line and the fold of the tongue is greater than or equal to 2 times the thickness of the box material. If the knife line is set at the left and right ends of the tongue, it will be cut from the left and right ends of the tongue and move towards the middle of the tongue. The total length of the single-sided knife line is less than 1 / 2 of the left and right width of the tongue. The buckle knife line can be parallel to the fold of the tongue or have a 0-90 degree inclination. The buckle knife line can be a straight line, a wavy line, a serrated line or other special-shaped lines that can be cut, such as butterfly shape and petal shape etc., which can be a mixed line of symmetrical design or asymmetrical design; if the buckle position knife line is set inside the outer frame of the plug tongue, it will be at a certain distance from the left and right ends of the plug tongue, and the distance is less than 1 / 2 of the left and right width of the plug tongue. The buckle position knife line is in the shape of L, crescent, half-moon or any non-closed line shape that can hold the swing cover. When folding the box, you only need to press the L-shaped or crescent-shaped knife line or any shape of knife line cut off on the plug tongue along the crease line to get an ear-like protrusion, and the plug tongue can be inserted to hold the swing cover; the knife line can be a single knife line, or a combination of multiple knife lines can be used to make the box buckled more tightly; using an innovative double high-low line structure, the printing height of the front and back of the box is the same, both higher than the crease height of the swing covers at the two ends.

2. A method for realizing a square box with no knife marks on the outer surface, characterized by: The box shape can be tetrahedron, hexahedron, irregular shape or other box types with swing lids.

3. A technical method for realizing a square box with no knife marks on the outer surface, characterized by: Do not use wooden base cutting molds with large errors, but use rubber base or metal base cutting molds.

4. A technical method for realizing a square box with no knife marks on the outer surface, characterized by: This knife line structure can be combined with a V-groove machine or other more advanced cutting tools to achieve a more perfect square box shape.

5. A technical method for realizing a square box with no knife marks on the outer surface, characterized in that: It can be assisted by other grooves, protrusions, etc. on the tongue to obtain a multiple snap-on effect, making the box buckled more tightly.

6. A method for realizing a square box with no knife marks on the outer surface, characterized by: The boxes are used in gifts, mobile phones, express packaging, jewelry, accessories, cosmetics, clothing, shoes, glasses, food, health products, medicines, household goods, home decoration, leather goods, stationery, computers and their peripherals, digital products, home appliances, speakers and other industries.

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