JPS5820385Y2 - Calendar bound with plastic - Google Patents

Description

[Detailed explanation of the invention] This invention relates to a calendar whose upper part is bound with plastic.
The purpose of this invention is to replace the conventional U-shaped binding fittings with plastic, simplify manufacturing, eliminate the need for large mechanical equipment, and reduce manufacturing costs.

When binding a calendar using a conventional U-shaped binding tool, the binding hardware formed in a U-shape is successively placed on a binding rail that slopes low toward the loosening machine. The binding fittings are allowed to descend on the rail toward the loosening machine due to their own weight, and the descending binding fittings are moved one by one to the line machine using a sucker, or the descending binding fittings are separated one by one by a separating device. It requires a complicated mechanism to move this to a line machine,
There are also inconveniences such as requiring a large installation area.

However, the present invention is characterized in that the above-mentioned conventional inconveniences and drawbacks are eliminated because the calendar is bound at the same time as the binding is formed by melting the plastic using split molds.

To explain the embodiment of this proposal using drawings, calendar 1
The calendar paper 2 has a perforation hole 6 in contact with the lower end 5 of the calendar binding 4 in the upper part 3, and one or more through holes 8 are provided near the approximate middle part of the portion 7 held by the calendar binding 4. Then, align the upper parts 3 of the required number of calendar papers 2 with perforations and through holes 8, and apply a release agent such as wax or silicone resin to the parts 7 of the front cover 10 and back cover 11 that are held by the calendar binding 4. For example, as shown in Fig. 3, the part coated with the release agent is held between a proportion mold 12 engraved with a calendar binding 4 having a hanging ring 9, and an optional molten plastic material is injected to seal the calendar binding 4 at the bottom. During shaping, plastic also flows into the through holes 8 of the calendar paper, and at the same time as the calendar binding 4 is formed, the stacked calendar paper 2 is held between the calendar binding 4 and the calendar 1 is manufactured.

In the calendar manufactured as described above, a release agent is applied to the parts of the front and back covers of the calendar where the plastic is attached, so that the calendar binding 4 and the calendar paper do not weld, and the calendar paper is attached to the through hole 8 formed at the top. Since the plastic flows into the sheet, there is no risk of it separating from the render paper or calendar binding.

e. The wrinkles in the calendar paper expanded by the heat of the plastic during shaping are adjusted by the perforations, so no wrinkles are formed in the calendar paper, and the heat forming of plastic takes only a very short time, so the calendar paper is sandwiched with calendar binding. The upper part of the calendar has an elegant finish with no risk of carbonization, and since plastic is used for the calendar binding, it is possible to freely select the color of the calendar binding, and since it is simple to manufacture, it can be manufactured at a low cost.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a calendar, FIG. 2 is a plan view of calendar paper, and FIG. 3 is a vertical sectional view of molding with a split mold. 1: calendar, 2: calendar paper, 3: top of calendar paper, 4: calendar binding, 5: bottom edge, 6: perforation hole, 7: clamped part, 8: through hole, 9: hanging ring, 10: cover , 11: Back cover, 12: Split mold.

Claims (1)

[Scope of utility model registration request] A perforation hole 6 is continuously opened at a position in contact with the lower end 5 of the calendar binding 4, and a portion 7 that is sandwiched by the calendar binding 4 is formed.
The required number of sheets of calendar paper 2 with one or more through holes 8 are polymerized, and the calendar binding 4 of the front cover 10 and back cover 11 is made.
A necessary release agent is applied to the part 7 to be held between the sheets, a plastic calendar binding 4 is integrally molded to the part 7, and the plastic material is allowed to flow into the through holes 8 of the calendar paper. A plastic-bound calendar featuring the following.