JPH0436005B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing picture frames used for displaying calligraphy, paintings, photographs, and the like.

``Prior Art'' Generally, picture frames are made of materials such as wood, light metal, or synthetic resin and have a solid feel, but these frames require high material costs, difficult processing, and manufacturing equipment. It has one or more of the following problems: it is expensive, it takes time to manufacture, and it lacks mass productivity.

To deal with this, picture frames made of hard paperboard, plywood, particle board, etc. have been devised.

Since such an improved picture frame only requires cutting the above-mentioned inexpensive material into a predetermined shape and gluing it together, most of the above-mentioned problems are eliminated and the cost of the picture frame can be significantly reduced.

``Problems to be Solved by the Invention'' In the case of the above-mentioned improved picture frame, reasonable results have been achieved within the scope of the improvement, but since the material of the picture frame is paperboard, plywood, or particle board, it lacks a sense of solidity, and the so-called We cannot expect products to become more luxurious.

In view of the above-mentioned problems, the present invention provides a method for manufacturing picture frames that not only achieves low cost, high productivity from small-scale production to high-volume production, and simplification of manufacturing equipment, but also allows for higher quality products. That is.

"Means for Solving the Problems" In order to achieve the intended purpose, the method for manufacturing a picture frame according to the present invention includes a method for manufacturing a picture frame having a polygonal outer edge shape and a polygonal inner edge shape. , a corner-cut trapezoidal front piece that is continuous to one side edge of the circumferential piece, and a corner-cut trapezoidal back piece that is narrower than the front piece and continuous to the other side edge of the circumferential piece. When producing a frame structure using a frame structure in which the unit block is a unit block and at least three or more such unit blocks are continuous in the longitudinal direction, a predetermined shape on the front and/or back surface of the planar material is A plurality of V grooves parallel to each other are formed in the vertical and horizontal directions, and the corners corresponding to the front and back pieces are cut out so that the frame structure is shaped in the width and length directions. After that, cut the V-groove at a predetermined location in the mold to separate the frame structures of the mold, and separate each of the separated frame structures. In the unit block, these front and back pieces are each folded inward to each peripheral piece to form a plurality of U-shaped edges, and the U-shaped edges located at both ends are folded inwards. It is characterized in that the framework of each U-shaped edge and the core material are fixed to each other by butting each other and loading a core material into each U-shaped edge.

"Operation" In the method for manufacturing a picture frame according to the present invention, as described above, by forming a V-groove in a planar material and partially cutting it out, a molded material having a large number of frame components is obtained, and the molded material is separated from the molded material. A predetermined picture frame is obtained by folding the picture frame structure, loading core material, and gluing.

Therefore, a desired picture frame can be made through a simple and small number of steps using a simple device such as a cutting machine.

The materials used are only inexpensive planar materials and core materials, and these materials can be used almost completely.
Low material cost.

Nevertheless, since the frame structure has a thickness due to the folding structure and a moderate thickness due to the core material, the frame has a solid feel and increases its commercial value.

"Example" When explaining the method of manufacturing a picture frame according to the present invention using the illustrated embodiment, first, a basic picture frame structure will be explained.

FIG. 1 shows a rectangular frame structure 1 as a representative example of a frame structure 1 for constructing a polygonal frame.

This picture frame structure 1 has four unit blocks 2 ₁ , 2 ₂ , 2 ₃ , and 2 ₄ that are continuous in the longitudinal direction, and these unit blocks 2 ₁ to 2 ₄ have rectangular peripheral pieces 3 _{1 and 2 4} , respectively. 3 ₂ , 3 ₃ , 3 ₄ and each of the circumferential pieces 3 ₁ to 3
Cornered trapezoidal surface piece portion 4 ₁ , 4 continuous to one side edge of _4
2 , 4 ₃ , 4 ₄ , and corner-notched trapezoidal back pieces 5 ₁ , 5 ₂ , 5 3 , _{5 4} that are continuous with the other side edges of the circumferential pieces 3 _{1 to} 3 ₄ .

In the picture frame structure 1 for a rectangular frame described above, when the picture frame structure 1 is for a square frame, the mutual lengths of the unit blocks 2 ₁ to 2 ₄ are equal to each other, and when the frame structure 1 is for a rectangular frame , when the unit blocks 2 ₁ to 2 ₄ are equal in length to each other, as in 2 ₁ = 2 ₃ and 2 ₂ = 2 ₄ , and the picture frame structure 1 is trapezoidal, 2 ₂
The length of each unit block is set as <2 ₁ =2 ₃ <2 ₄ .

Each of the circumferential pieces 3 ₁ to 3 ₄ is 3 ₁ = 3 ₂ = 3 ₃ = 3 ₄
Although these widths are set arbitrarily, each of the table pieces 4 ₁ to 4 ₄ (however, 4 ₁ = 4 ₂ = 4 ₃ = 4 ₄ ),
Each back piece 5 ₁ to 5 ₄ (5 ₁ = 5 ₂ = 5 ₃ = 5 ₄ )
In _the relative relationship _with
1 to 4 Set narrower than ₄ .

This is a technical matter common to all.

As will be clear from the description below, the frame structure 1 has a number of unit blocks corresponding to the polygonal shape of the frame to be manufactured.

For example, the picture frame structure 1 for a rectangle needs to have four unit blocks 2 ₁ to 2 ₄ as described above, but the picture frame structure 1 for a triangle needs to have three unit blocks. On the other hand, in the frame structure 1 for pentagons, hexagons, etc., the number of unit blocks increases as the number of polygons increases.

In the triangular frame structure 1 or the pentagonal or larger frame structure 1, the lengths of each unit block are equal to each other, or some (however, plurality) of them are equal, as in the case of the square shape. , are different from each other, various aspects are adopted.

In the method of the present invention, as a first step, one of the frame structures 1 described above is made into a continuous mold.

As a representative example, a case will be described below in which a rectangular frame structure 1 forms a continuous pattern.

When making a continuous pattern of the frame structure 1 for a square (rectangular) frame, for example, a square sheet material 6 as shown in FIG. 2 is prepared.

Such planar material 6 may be paperboard, thin wooden board, cloth, synthetic resin sheet, thin metal plate, etc.
Depending on the case, a composite sheet made of a combination of these arbitrary materials may also be employed.

As an example, the planar material 6 shown in FIG.
The mold material 7 is processed as shown in FIGS.

That is, in FIGS. 3 and 4, on the back and front surfaces of the planar material 6, from the top to the bottom,
Horizontal V groove 8 ₁ (back side), horizontal V groove 8 ₂ (back side), horizontal V groove 8 ₃ (front side)
, with a predetermined parallel interval, and "8 ₁ → 8 ₂
→8 ₃ ” → “8 ₂ →8 ₁ →8 ₃ ” → “8 ₁ → 8 ₂ → 8 ₃ ”
→ "8 ₂ → 8 ₁ → 8 ₃ " are formed in a predetermined repeating order.

Both the V grooves 8 ₁ and 8 ₂ (on the back side) in the above form a boundary between the back piece parts 5 _{1 to} 5 ₄ and the peripheral piece parts 3 ₁ to 3 ₄ in each unit block 2 1 to 2 ₄ , and the remaining V grooves Groove 8 ₃ is
It forms a boundary between the frame structures 1 and also forms a boundary between two sets of front piece parts 4 ₁ to 4 ₄ adjacent to each other or a border between two sets of back piece parts 5 ₁ to 5 ₄ adjacent to each other.

Further, on the back surface of the planar material 6, vertical V grooves 9 ₁ , 9 2 , 9 3 are formed which form boundaries between the unit blocks 2 ₁ , _{2 2} , _{2 3} , _{2 4} in each frame structure 1 . They are formed at predetermined parallel intervals.

The V angles of the V grooves 8 ₁ to 8 ₃ and 9 ₁ to 9 ₃ are usually
It is set at a right angle, but depending on the situation, it may be set at an obtuse angle or an acute angle.

In addition, V grooves 8 ₁ to 8 ₃ are provided on the back surface of the sheet material 6.
A rectangular cutout 1 is made at the intersection of the V grooves 9 ₁ to 9 ₃
0, 11, are formed respectively, and
V-shaped cutouts ₁₂ , ₁₃ , and 14 are formed at the ends of these V grooves 81 to 83, ₉₁ to ₉₃ , respectively, and slanted cutouts 15 are formed at the four corners of the planar material 6.
is formed.

In this way, a pattern 7 in which the rectangular frame structure 1 is continuous is created.

Each of the cutout portions 10 and 11 in the above is a square (one corner=90°), the V angle of the cutout portions 12, 13, and 14 is also 90°, and the inclination angle of the cutout portion 15 is 45°.

In addition, in the above, a mold coverage 7 in which further frame structures are continuous may be created at one or both longitudinal ends of the frame structure 1, and a plurality of frame structures 1 may be continuous only in the longitudinal direction. A mold coverage 7 may also be created.

In either embodiment, the repeating order of the circumferential pieces 3 ₁ to 3 ₄ , the front pieces 4 ₁ to 4 ₄ , and the back pieces 5 ₁ to 5 ₄ in the vertical direction of the mold material 7 is in addition to the above-mentioned order.
₁ ~ 5 ₄ '' → ``3 <sub>1</sub> ~ 3 <sub>4'</sub> ' → ``4 ₁ ~ 4 4 _' ' → ``5 <sub>1</sub> ~
5 <sub>4</sub> ” “3 <sub>1</sub> to 3 <sub>4</sub> ” → “4 <sub>1</sub> to 4 <sub>4</sub> ” → “5 <sub>1</sub> to 5 <sub>4</sub> ”
"3 <sub>1</sub> ~ 3 <sub>4</sub> " → "4 <sub>1</sub> ~ 4 <sub>4</sub> " or "4 <sub>1</sub>
〜4 <sub>4</sub> '' → ``3 ₁ ~ 3 ₄ '' → ``5 <sub>1</sub> ~ 5 <sub>4'</sub> ' → ``4 ₁ ~
4 ₄ ” → “3 ₁ to 3 ₄ ” → “5 ₁ to 5 ₄ ” → “4 ₁ to 4
₄ '' → ``3 <sub>1</sub> to 3 <sub>4</sub> '' → ``5 ₁ to 5 ₄ '', etc. may be adopted.

By the above-mentioned means, picture frame structure 1 other than for rectangular
When making a continuous pattern 7, the frame structure 1
The number of unit blocks is increased or decreased.

When making the mold material 7 from the planar material 6, publicly known or well-known means such as cutting, pressing, cutting, etc. are employed.

After the mold material 7 is formed in this manner, the frame structures 1 are separated from each other from the mold material 7.

That is, the mold cutting 7 is cut through a well-known cutting means.
Each frame structure 1 is separated from the V-groove ₈₃ one by one, or the frame structures 1 are simultaneously separated from each other, as shown in FIG. 1.

Thus, the separated picture frame structure 1 is divided into unit blocks 2 ₁ to 2 ₄ of the picture frame structure 1, as shown in FIG.
, these front pieces 4 ₁ to 4 ₄ and back pieces 5 ₁
~ 5 ₄ inwardly into each of the circumferential pieces 3 ₁ ~ 3 ₄ to form a plurality of U-shaped edges 16, 17, 1.
8 and 19, and the U-shaped edges 16 and 19 located at both ends are butted against each other to form the state shown in FIG.

Furthermore, in each U-shaped edge body 16 to 19, a ninth
10, the core material 20 is loaded, and the framework of each of the U-shaped edges 16 to 19 and the U-shaped edges 16 to 19 and the core material 20 are bonded, for example, by adhesive means. are fixed to each other.

The core material 20 is usually paperboard, wood, plywood,
Plastic etc. are used.

When the picture frame thus produced is used, a photograph (calligraphy or painting) 21 or the like is interposed therebetween and a back cover 22 is attached, as shown in FIG. 10.

``Effects of the Invention'' As explained above, when using the method of manufacturing a picture frame according to the present invention, the cost reduction of the product, productivity,
It is useful and beneficial because it can simplify manufacturing equipment and improve the quality of products.

[Brief explanation of drawings]

Fig. 1 is a back view showing an example of the frame structure according to the present invention, Fig. 2 is a plan view of a planar material used in the method of the present invention, and Figs. Back view and front view of mold coverage, 5th
The figures are a sectional view along the line of FIG. 3, FIG. 6 is a sectional view along the line of FIG. 3, FIG. 7 is a perspective view showing the assembled state of the frame structure in the method of the present invention,
The figures are a front view and a cross-sectional view of a picture frame manufactured by the method of the present invention, and FIG. 10 is a cross-sectional view showing an example of the use of the picture frame. _DESCRIPTION OF SYMBOLS _{1...Picture frame structure, 21-24...unit block, 31-34 ... peripheral piece} part, _41-44 ...table piece part,
5 ₁ to 5 ₄ ... back piece, 6 ... planar material, 7 ... mold coverage, 8 ₁ , 8 ₂ , 8 ₃ ... lateral V-groove, 9 ₁ , 9
_2,93 ... _Vertical V groove, 10-15...Removed portion, 16-19...U-shaped edge body.

Claims (1)

[Claims] 1. In the manufacturing method of a picture frame having a polygonal outer and inner edge shape, a rectangular peripheral piece, a corner-cut trapezoidal front piece continuous to one side edge of the peripheral piece, and A picture frame is constituted by a unit block having a trapezoidal back piece that is narrow in width and continuous with the other side edge of the circumferential piece, and at least three or more such unit blocks are continuous in the longitudinal direction. When producing the picture frame structure, a plurality of V grooves parallel to each other are formed in the vertical and horizontal directions at predetermined locations on the front and/or back surfaces of the planar material, and Cut out the parts corresponding to the corners of one piece to create a mold section where the frame structure is continuous in either the width direction, the longitudinal direction, or both.
Cut the groove to separate the frame structures of the mold, and in each unit block of the separated frame structure, insert these front and back pieces into each peripheral piece. The U-shaped edges are folded toward each other to form a plurality of U-shaped edges, and the U-shaped edges located at both ends are abutted against each other, and core material is loaded into each U-shaped edge. and a method for manufacturing a picture frame, characterized in that the U-shaped frame and the core are fixed to each other.