JPH03236996A - Metal frame for cover of binder - Google Patents

Abstract

PURPOSE:To easily prepare a metal frame sufficiently protecting and reinforcing the outer edge of the cover of a binder and having various patterns applied thereto by applying a synthetic resin to the surface of a steel strip over the entire length thereof to in the coated steel strip into a hoop shape and subsequently cutting the wound steel strip to apply processing and molding to the cut one so as to have a semicircular are shape cross-section to subject the same to bending processing in the longitudinal direction. CONSTITUTION:A synthetic resin is applied to the entire surface of a steel strip having predetermined width over the entire length thereof and the coated steel strip is wound into a hoop shape. Thereafter, this hoop 2 is sent to a stopper 6 to be cut into a predetermined length by a cutting press 4. Next, the cut material (a) is transported to a roll processing machine 11 to be subjected to roll molding by a grooved roller 11a and the roller 11b having the ridges fitted in the grooves of the roller 1a. The linear material (a) subjected to roll molding is sent to a stopper 13 and processed into a cover ring 20 having a horizontal U-shape cross-section by a bending mold 12.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a metal frame that is fitted onto the outer edge of a cover such as a binder and used to protect and reinforce the outer edge, and a method for manufacturing the same.

[Conventional technology]

As shown in FIG. 4, a metal frame C is fitted onto the outer edge of the cover of a normal binder B to protect and reinforce the outer edge. The conventional material for this metal frame C is mostly stainless steel, and this stainless steel does not rust, has excellent strength and hardness, and is less deformed by slight impact, protecting the outer edge of the cover of the binder B for a long time. Reinforcement will not spoil the beauty.

[Problem to be solved by the invention]

However, the surface of stainless steel is only polished to a high optical quality, and the finish is the color of the bare metal, so it is inferior in terms of decoration. That is, it is of low value as a pattern surface such as various hues and shading.

Therefore, the present invention provides a metal frame that can sufficiently protect and reinforce the outer edge of a cover such as a binder, can be decorated with various patterns, can be easily applied in terms of aesthetics, and does not impair the aesthetic appearance for a long time, and the metal frame. An object of the present invention is to provide a method for easily manufacturing such a metal frame.

[Means to solve the problem]

In order to solve the above problems, the invention relating to a metal frame consists of a steel strip of a required width, and the entire surface of the steel strip is coated with vinyl chloride via a polyester resin adhesive. The structure was adopted.

The above-mentioned steel strip can be made of tin-free steel, etc., and is coated with vinyl chloride using the above-mentioned adhesive.It is a metal frame that is attached to the top and bottom of the back cover of objects, binders, etc., and is called a back cover. It is something. In addition, files, note clips, etc. are likely to be included on the binder cover.

[Function] The metal frame constructed as described above can be made to have an excellent aesthetic appearance by variously selecting the hue, shading, and coating/coating specifications of the vinyl chloride coating and the paint coating layer. Protection and reinforcement are also provided by coverings and coatings.

In the manufacturing method configured as described above, the material is cut to a certain length in the first step, rolled into a shape with a biting margin in the second step, and wrinkled by longitudinal bending in the third step. The metal frame is completed after undergoing a smooth bending process.

〔Example〕

This embodiment is for manufacturing a cover ring 20 for protecting and reinforcing the top and bottom and front edge of the cover of binder B shown in FIG. 4(a). It can also be a coating layer of gold-gold varnish paint or polyester resin paint. For example, epoxyphenol paint is used as the gold varnish paint.

In addition, in the invention relating to a method for manufacturing a metal frame, when manufacturing a metal frame to be fitted to the outer edge of a cover of a binder, etc., a steel strip of a required width is coated with a synthetic resin over its entire length. After winding the #l band into a hoop shape, we adopted a configuration consisting of the following three steps.

1st step: drawing out the material from the hoop and cutting it into a predetermined length; 2nd step: bending the cut material in its width direction to form a semi-circular cross-sectional shape with a biting margin on both sides. 3rd step - A step of aligning the rolled material to the outer edge shape of the cover of the binder, etc. and bending it in the longitudinal direction. Note that the metal frame for the cover of the binder, etc. is as follows: A metal frame attached to the outer edge of the main cover, inner cover, and back cover of a binder, etc. 20a and kakugane 20b are called okuri or kakugane.
is made in the same way, so a detailed explanation will be omitted.

First, a vinyl chloride resin film (0.05 mm thick) was adhered to the entire surface (one side) of a thin A1 electrogalvanized steel sheet (temperature: S, thickness: 0.27 mm) using a polyester resin adhesive. The board is then coated using a slinter machine.
Cut into strips with a width of 10.2 mm or 8.6 mm and wind into a hoop shape.

As shown in FIG. 1, the hoop 2 is attached to a rotary table 1, its starting end is guided to a material feed roller 3, and a metal frame C (cover ring 20) is manufactured in the following three steps.

l) Although not shown in the first process/material cutting diagram, the scale guide 7 is provided with a material presser, and the material a is fed straight to the stopper 6 without bending, protruding, or falling. . When fed, the cutting press 4 is activated and the material a is cut into a predetermined length. The stopper 6 can be moved and fixed along the scale guide 7, and the length of the particle a is determined at that position. The cutting press 4 is operated by detecting that the material a comes into contact with the stopper 6 using various sensors.

2) Second step: Roll processing and forming The material a cut into a predetermined length is placed horizontally along the falling guide 8 and rides on the feeder 9 made of con hair, and is transferred to the roll processing machine by the drive of the motor 9'. 11 and roll-formed to form a so-called straight material a'. This roll processing is carried out using grooved rollers, as shown in Fig. 2.
A required number of pairs, for example 5 to 10, are arranged in the running direction as shown in FIG. The groove gradually becomes deeper in the running direction, resulting in a cross-sectional shape as shown in Figure 6.
In addition, the semicircular portion 17 is formed into a cross-sectional shape with a biting margin 18 at both ends.

3) 3rd process: The straight material a' for machining the cover ring is roughly swaged to the edge dimension (1 dimension in Fig. 4)
It is sent to the stopper 13 installed according to the
The bending die 12 bends it 2 to 3 degrees deeper than the right angle.

The piece is turned upside down, and the square metal 20b is turned into a product by one bending process.

The ring-covering process is performed through the above three steps, and in order to make the material feed smooth, 1) a roll that removes the bending of the material hoop, 2) a brake that prevents the material from wobbling after it hits the stopper 6, 3) A material presser to prevent the material cut to a certain length from turning over due to vibration while following the falling guide 8;
4) A material presser and the like are added as necessary to ensure the operation of the material feeder 9.

The following test was conducted to determine whether the metal frame C (cover ring 20) thus manufactured could withstand use.

The boat 11 trap parking test machine 24 is shown in FIG. 7, and the cover of the binder 3 fitted with the metal frame (i-ring 20) of the example is set up on the stand 23, and the height from the top thereof is 10 cm and 20 cm.

30c+n,, from each position of 60cm, diameter: 12mm
, the lot 21 weighing 400 g is dropped, and the degree of indentation of the metal frame C is determined by its lateral diameter, that is, the diameter in the paper thickness direction of the cover (double-dashed line in the same figure), and similarly the opposite side of the straight material a'. The sides are also bent and processed into the U-shaped cover ring 20 shown in FIG. The stopper 13 is movable and fixed. The fore-and-aft reverse action is performed manually.

The bending mold 12 is paired with a mold 15, and the mold 15 is connected to the upper central groove 15e of the housing 15a, as shown in FIGS. 3(a), (b), and (C). A vertically swingable die 15b is provided in the groove 1 of the die 15b.
A guide 15d biased upward by a spring 15C is provided on the 56'F side so as to be able to move up and down. When the bending die 12 descends, the die 15b swings as shown by the chain line in FIG. 15d is lowered and the straight member a' is bent at a substantially right angle.

At this time, a compressive force acts on the inside of the bending and wrinkles tend to form, but as shown by the chain line in FIG. This prevents wrinkles. That is, the generation of wrinkles is prevented by the same effect as that of the flange portion during searching.

In addition, the back metal 203 is separated from the product (mm) at the stage of roll processing.
I measured it with this. The results are shown in Table 1.

In addition, when the cover is put up, the J= side is the stopper 22.
It was made to protrude by about 10 mm.

In Table 1, stainless steel is 0.25 thickness 5IIS430 plate, 0
．． 19-thick tain-free is a 0.19-mm-thick tin-free steel (T-2,5) coated with polyester resin using a roll coater (Example 2), 0.
271! Teinfree is a 0.27 mm thick tinfree steel (T1.) coated with polyester resin electrostatically (Example 3). 0.42 PVC is a thin electrolytic galvanized steel sheet (811 quality: S, thickness 0.27 mm
) and a vinyl chloride film (thickness: 0.1 mm) bonded together with a polyester resin adhesive (Example 4)
).

Table 1: In the above impact test, the degree of lifting of the metal frame 20 was measured when the Rondo 21 had a diameter of 24 mm and a weight of 1050 g and was dropped from a height of 60 cm + n, and the results are shown below. It is shown in Table 2. In addition, the reason why a large one was used for Rondo 21 is that if a collision is made with the gold frame 20 in a wide range,
This is based on the fact that the biting margin 18 biting into the cover of the binder 8 tends to lift up and come off.

Table 2 (Unit: mm) The abrasion tester is shown in Figure 8, which shows the binder B on the support frame 25.
was supported and moved back and forth on the bare surface of the iron plate 26. It can be seen from the test results that the reciprocating movement of the solenoid 28 is sufficient for use.

By the way, in the case of Nine Free, even if the scalp is exposed, it will not rust and its beauty will not deteriorate.

A similar test was conducted on colored galvanized iron, but the abrasion test revealed that none was usable and there was a large amount of rust.

〔Effect of the invention〕

Since the present invention is configured as described above, in particular, since roll processing is used, binder metal frames etc. can be manufactured continuously by controlling material feed etc., which has great advantages in terms of time and space. For example, compared to press processing,
There is no process of setting up and removing materials, and this alone shows that it is superior in terms of time and space as well.

In addition, since roll processing can be performed continuously, hoop material can be used as the material, long-term continuous operation is possible, and processing accuracy is improved compared to jarring cutting of steel plates. The solenoid 28 is moved to the left by the pull and to the right by the spring 29.
．． Controlled by pulse counter 32 and interface 33, pull direction (right direction): 120 m/se
c, Pushing direction (left direction 11: 240mm/se
c. The reason why the speed is set in two stages is to correspond to the case where the binder B is handled normally and the case where it is handled vigorously. In addition, the reciprocating stroke is 10 mm, and when actually loading and unloading binder B (lifting angle,
It corresponds to the ground contact distance of one point on the corner of the cover (around 20 degrees). From this test machine number, the rate of one round trip per second is 100.
Table 3 shows the results of 00 round trips. Note that the weight of Binder B was 7100 g.

Table 3 is also stable.

Furthermore, since the steel plate is coated with a synthetic resin, various patterns can be applied to the surface, and the product can be sufficiently applied in terms of aesthetics. Transparent colors are also possible, especially if tin-free steel is used with colored varnishes, such as gold varnishes.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of an embodiment of the metal frame manufacturing method according to the present invention, FIG. 2 is an enlarged side view of the main part of FIG. 1, and FIG. 3 is a detailed enlarged view of the main part of FIG. 4(a) is a partially cutaway front view, FIG. 4(b) is a cutaway right side view, FIG. 4(C) is a cutaway plan view, and FIGS. 4(a) and 4(b) are a perspective view and a portion of the binder. 5 is a front view of the metal frame, FIG. 6 is a sectional view of the metal frame, and FIGS. 7 and 8 are schematic diagrams for explaining various tests. 1... Rotating table, 2... Hoop, 3... Material feeding roller, 4... Cutting press, 5... Material feeding Motor, 6...
・Stopper 7... Sugere guide, 8...
...Falling guide, 9......Shrine fee sending,
11... Roll processing machine, 4 12... Bending die, 13... Stopper 14... Stomper guide, 15... Receiving die, 15a...・Housing, 15b...Dice, 15C...
...Spring, 15d...Guide, 15e.
...Central groove, 20...Full ring, 2
1... Falling lot, 22... Long strapper 23... Stand, 24... Impact/destruction tester, 25... Support frame, 26...・・Iron plate, 2
8... Solenoid, 29... Spring, 3
1...Pulse generator, 32...Pulse counter 33...Interface, a, a'...0 charge, B...Binder C... ...Gold frame.

Claims (3)

[Claims] (1) When manufacturing a metal frame that is fitted to the outer edge of a cover such as a binder, a steel strip of the required width is coated with synthetic resin over its entire length, and the steel strip is wound into a hoop shape. A method for manufacturing a metal frame for a cover such as a binder, which comprises the following three steps. 1st step: drawing out the material from the hoop and cutting it into a predetermined length; 2nd step: bending the cut material in its width direction to form a semi-circular cross-sectional shape with a biting margin on both sides. 3rd step: bending the rolled material in the longitudinal direction to fit the outer edge shape of the cover such as a binder; (2) The metal frame fitted to the outer edge of the cover of a binder, etc. is made of a steel strip of the required width, and the entire surface of the steel strip is coated with vinyl chloride via a polyester resin adhesive. Features a gold frame for the cover of binders, etc. (3) The metal frame fitted to the outer edge of the cover of a binder, etc. is made of a tin-free steel strip of the required width, and the entire length of the strip is coated with gold varnish paint or polyester resin paint. A gold frame for the cover of binders, etc.