JP3087072U - Synthetic resin case and synthetic resin case manufacturing device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To improve the outer peripheral portion and the ruled line portion, it is possible to prevent a worker from being damaged during assembly work or a case user from being damaged. Provided is a synthetic resin case that can eliminate the inconvenience of detachment and removal of members such as those described above. A synthetic resin case (10) of the present invention is made of a synthetic resin sheet (S) as a material, and the entire outer peripheral portion and a ruled line (K) to be a bent portion for forming the case are all formed into a corrugated product (C).
o, and is characterized by being assembled based on o.

Description

[Detailed description of the invention] [Technical field to which the invention belongs]

 The present invention relates to a synthetic resin case in which an outer peripheral portion and a ruled line portion are novelly improved, and a manufacturing apparatus for the synthetic resin case.

[Prior art]

 A conventional example of a box-shaped synthetic resin case after assembly will be described with reference to FIG. A molded product 50 for a synthetic resin case shown in FIG. 7 is made of a synthetic resin sheet, and, for example, four wall portions 51, insertion portions 52, bent portions 53, and adhesion portions 54 are provided by a molding apparatus (not shown). Are used to cut all the contours defining the outer circumference straight, and the required number of ruled line portions 60 indicated by dotted lines are formed by partially cutting in a straight shape. Then, the molded product 50 is bent at the position of the ruled line portion 60, and an adhesive is applied to the bonding portion 54 to manufacture a box-shaped synthetic resin case.

[Problems to be solved by the invention]

 However, in the case of the conventional molded product 50 as described above, since all the outer peripheral portions of the wall surface portion 51, the insertion portion 52, the bent portion 53, and the bonding portion 54 are cut straight, When an operator touches the protruding edge of the portion 52, the bent portion 53, or the like, there is a danger that the finger is cut due to the sharp edge of the protruding edge. Further, since the ruled line portion 60 is partially cut in a straight shape, for example, when the insertion portion 52, the bent portion 53, and the like are bent during the assembly work, the insertion portion 52, the bent portion Inconvenience has occurred when 53 and the like are cut off from the molded product 50. Further, since the outer peripheral portion of the insertion portion 52 and the like is cut straight as described above, the outer peripheral portion of the insertion portion 52 and the contacted portion (for example, the inner portion of the wall surface portion 51 and the bent portion 53) are connected. The contact resistance between them is small, and the insertion part 52 that has been inserted once comes off. The present invention has been made in view of the above-mentioned conventional circumstances, and has improved the outer peripheral portion and the ruled line portion to prevent a worker from being damaged during assembly work or a case user from being damaged. It is an object of the present invention to provide a synthetic resin case and an apparatus for manufacturing the synthetic resin case, which can eliminate the inconvenience of detaching and extracting a member such as a part or a bent part.

[Means for Solving the Problems]

 The synthetic resin case according to the first aspect of the present invention is characterized in that a synthetic resin sheet is used as a material, and the entire outer peripheral portion and the entire ruled line portion serving as a bent portion for forming the case are assembled in a wave shape. According to the first aspect of the present invention, since the entire outer peripheral portion and the entire ruled line portion are assembled in a wave shape, the entire outer peripheral portion has no acute angle portion, and the fingers of the operator during the assembly work are damaged. Can be prevented, and the case user can be prevented from being hurt. In addition, since the entire outer peripheral portion and the entire ruled line portion are corrugated, the bending resistance of the ruled line portion is particularly weak and easy to bend, thereby improving the assembling workability. It becomes difficult for the members adjacent to each other to be separated from each other. Further, since the entire outer peripheral portion of the member serving as the insertion portion is also corrugated, contact resistance with other members is increased, and it is difficult to remove the member. According to a second aspect of the present invention, in the synthetic resin case according to the first aspect, the synthetic resin is selected from vinyl chloride resin, polyethylene, and plastic. According to the first aspect of the invention, the effect of the first aspect can be exerted by using any material selected from vinyl chloride resin, polyethylene, and plastic as the material. According to a third aspect of the present invention, there is provided an upper mold having a punching blade for punching a synthetic resin sheet and a projection for forming a ruled line, and a synthetic resin sheet placed opposite to the upper mold to be driven upward to the upper mold. A manufacturing apparatus for a synthetic resin case having a lower die and a lower die, wherein the punching blades and the ruled line forming projections on the upper die side are formed in a wavy shape. According to the third aspect of the present invention, an apparatus for manufacturing a synthetic resin case is configured by forming the shape of the punching blade and the ruled line forming projection on the upper mold side into a corrugated shape and combining it with the lower mold. Therefore, a synthetic resin case exhibiting an excellent action and effect as in the invention of claim 1 can be efficiently manufactured. According to a fourth aspect of the present invention, there is provided a rotary body including a rotary body provided on the outer circumference with a die body including an outer peripheral punching blade and a ruled line forming protrusion, and an auxiliary rotary body arranged to face the rotary body. An apparatus for manufacturing a synthetic resin case of the formula, wherein the shape of the blade for punching out the mold and the projection for forming the ruled line are formed in a wavy shape. According to the invention of claim 4, a rotating body provided on the outer circumference with a mold body comprising an outer peripheral punching blade and a ruled line forming projection, and an auxiliary rotating body arranged to face the rotating body are provided. With the rotary structure provided, it is possible to efficiently manufacture a synthetic resin case exhibiting excellent functions and effects as described in the first aspect of the present invention. According to a fifth aspect of the present invention, in the apparatus for manufacturing a synthetic resin case according to the third or fourth aspect, the synthetic resin is selected from vinyl chloride resin, polyethylene, and plastic. According to the invention of claim 5, the function and effect of claim 3 or 4 can be exerted by using any material selected from vinyl chloride resin, polyethylene and plastic as the material.

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described in detail. FIG. 1 shows an apparatus for manufacturing a synthetic resin case according to an embodiment of the present invention. This manufacturing apparatus includes a thin rectangular parallelepiped punching blade 2 and a thin rectangular parallelepiped ruled line forming projection 3 which are continuous in the front and back directions on the paper surface of FIG. 1 for punching a thin synthetic resin sheet S. The upper mold 4 and a lower mold 7 disposed opposite to the upper mold 4 and placed on the synthetic resin sheet S and driven upward to the upper mold 4 side, for example, as shown in FIG. The synthetic resin sheet S is punched so as to have an outer periphery such as Co and a ruled line K indicated by a dotted line, and a folding ruled line K is formed, so that the synthetic resin case 10 as shown in FIG. 5 can be assembled. . In the present embodiment, the synthetic resin sheet S is used as a material for assembling and molding the synthetic resin case 10, but in the present invention, in addition, a vinyl chloride resin, polyethylene, plastic, or the like is used as a material. Can be used widely. The upper die 4 has a configuration in which an upper die substrate 6 that holds the punching blade 2 and the ruled line forming projection 3 in a state of being protruded downward is attached to a fixedly-disposed die chase 5. The lower die 7 is configured such that a lower die substrate 9 is mounted on a base 8 and is driven by driving means (not shown) to ascend or descend to the upper die 4 side. At positions corresponding to the ruled line forming projections 3 on the lower die substrate 9 of the lower die 7, a required number of receivers 1 for forming ruled lines are arranged as shown in FIG. The receiving body 1 for forming the ruled line forms a main body 1b having a planar shape of, for example, an elongated hexagon made of a metal material, for example, a stainless material. As shown in FIG. 2, a long receiving groove 1a corresponding to the shape of the protruding end 3a of the ruled line forming projection 3 is formed in the center of the main body 1b of the receiving body 1 along the long side direction. are doing. The receivers 1 are arranged on the lower substrate 9 in a large number at locations corresponding to the respective portions forming the ruled lines K in the molded product Co shown in FIG. Here, the shapes of the punching blade 2 and the ruled line forming projection 3 will be described with reference to FIG. As shown in FIG. 3, the blade portion 2a of the punching blade 2 is formed in a wavy shape along its length direction. Similarly, the shape of the protruding end 3a of the ruled line forming protrusion 3 is also formed in a wavy shape along its length direction. As a result, in the molded product Co shown in FIG. 4, the entire outer peripheral portion and all the ruled lines K are formed so as to exhibit a wavy shape. According to the synthetic resin case 10 manufactured by the above-described manufacturing apparatus, since the entire outer peripheral portion and the entire ruled line portion of the molded product Co can be assembled in a corrugated shape, the entire outer peripheral portion has no acute angle portion. At the same time, it is possible to prevent the operator's fingers and the like from being damaged at the same time, and also to prevent the user of the assembled case from being damaged. Further, since the entire outer peripheral portion and the entire ruled line portion of the molded product Co are all corrugated, the bending resistance of the ruled line K is particularly weak and easy to bend. Compared with the shape-like one, it is difficult for the four adjacent wall portions 11, the insertion portion 12, the bent portion 13, and the bonding portion 14 to be separated from each other via the ruled line K. Further, since the entire outer peripheral portion of the insertion portion 12 has a corrugated shape, the contact resistance of the other wall portion 11 and the like becomes large. Therefore, each portion of the insertion portion 12 is formed as a molded product Co as shown in FIG. It becomes difficult to get out after being assembled. As shown in FIG. 6, in addition to the above-described manufacturing apparatus, as shown in FIG. A body 21 and an auxiliary rotator (anvil) 25 arranged to face the rotator 21, and the above-described receiver 1 is provided at a position corresponding to the ruled line forming projection 3 of the auxiliary rotator 25. A molded product Co as shown in FIG. 4 can also be produced by a rotary molded sheet producing apparatus provided with a receiver 1 'similar to that described above. The rotator 21 and the auxiliary rotator 25 can be implemented by arranging them upside down as shown.

[Effect of the invention]

 According to the present invention, it is possible to prevent damage to the fingers of the worker during the assembling work, and also to prevent the case user from being damaged after being assembled, so that the members adjacent to each other via the ruled line portion can be prevented. It is possible to provide a synthetic resin case which is hard to be detached and does not have a bent member such as an insertion portion pulled out, thereby improving assembling workability. Further, according to the present invention, a so-called flat structure in which the shape of the upper die-side punching blade and the ruled line forming projection is formed in a wave shape and combined with the lower die, or the punching blade and the ruled line forming projection are formed. It is possible to provide a manufacturing apparatus capable of efficiently manufacturing a synthetic resin case exhibiting the excellent effects as described in the above-mentioned invention with a so-called rotary configuration in which the shape is formed in a wave shape and installed.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an apparatus for manufacturing a synthetic resin case according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view showing a ruled line forming projection and a receiver in the synthetic resin case manufacturing apparatus of the present embodiment.

FIG. 3 is an enlarged perspective view showing a punching blade and a ruled line forming projection in the synthetic resin case manufacturing apparatus of the present embodiment.

FIG. 4 is a plan view showing a molded product formed by the synthetic resin case manufacturing apparatus of the present embodiment.

FIG. 5 is a perspective view of a synthetic resin case based on a molded product formed by the manufacturing apparatus of the present embodiment.

FIG. 6 is a schematic configuration diagram of an apparatus for manufacturing a rotary synthetic resin case according to the present embodiment.

FIG. 7 is a plan view showing a state before assembly of a conventional synthetic resin case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiving body 1 'Receiving body 1a Long receiving groove 1b Main body 2 Punching blade 2a Blade part 2' Blade type 3 Ruled line forming protrusion 3a Protruding end 3 'Ruled line forming protrusion 4 Upper die 5 Pulling chase 6 Upper die substrate 7 Lower die 8 Base 9 Lower die substrate 10 Synthetic resin case 11 Wall part 12 Insertion part 13 Bend part 14 Adhesion part 20 Blade body 21 Rotating body 25 Auxiliary rotating body S Synthetic resin sheet Co Molded product K Ruled line

Claims (5)

[Utility model registration claims] 1. A synthetic resin case, wherein a synthetic resin sheet is used as a material, and the entire outer peripheral portion and the entire ruled line portion serving as a bent portion for forming the case are assembled in a corrugated shape. 2. The synthetic resin case according to claim 1, wherein said synthetic resin is selected from vinyl chloride resin, polyethylene, and plastic. 3. An upper die having a punching blade for punching out a synthetic resin sheet and a projection for forming a ruled line, and a lower die which is disposed opposite to the upper die and is mounted with the synthetic resin sheet and is driven upward to the upper die side. An apparatus for manufacturing a synthetic resin case having a mold, wherein the shape of the punching blade and the ruled line forming projection on the upper mold side is formed in a wave shape. 4. A rotary synthetic resin comprising: a rotating body provided on the outer periphery with a mold comprising an outer periphery punching blade and a ruled line forming projection; and an auxiliary rotating body disposed opposite to the rotating body. An apparatus for manufacturing a synthetic resin case, wherein a shape of a blade for punching the mold body and a projection for forming a ruled line are formed in a wave shape. 5. The synthetic resin case manufacturing apparatus according to claim 3, wherein said synthetic resin is selected from vinyl chloride resin, polyethylene, and plastic.