JPH05285561A - Method for forming irregular pattern and patterning device - Google Patents

Abstract

PURPOSE:To obtain a metal plate on which a complicated pattern excellent in originality is formed. CONSTITUTION:A press mold 20 formed with a plural number of protrusion 22 is arranged with a prescribed pattern along the transportation path of a plate material 10. When the plate material 10 is intermittently fed, its stroke is set as nonintegral multiple of the pitch of the protrusion pattern. The die 20 can be moved in the plate-width direction in accordance with the intermittent feeding of the plate material 10. In this case, the moving stroke of the press mold 20 is desirably set as nonintegral multiple of the pitch of the protrusion pattern. Consequently, by adjusting a positional deviation concerning the transporting direction and the plate-width direction of the press mold 20 against the plate material 10 between the last press-printing and this press-printing, a complicated and irregular pattern low in is formed on the surface of the metal plate 10 with only one die.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for forming an irregular pattern which is rich in originality and gives a high-class feeling on the surface of a plate material such as a steel plate.

[0002]

2. Description of the Related Art Steel plates used as wall materials, floor materials, ceiling materials, etc. are replaced with plate materials having a polished metal surface, and plate materials having irregularities by etching or embossing are used. It has become to. The steel sheet provided with the unevenness has a three-dimensional surface as compared with the surface of the steel sheet that has been conventionally polished. Further, the illusion caused by the metallic luster is suppressed, and the anti-glare property when used as an exterior material is also improved.

The etching treatment is suitable for forming a fine pattern on the surface of a steel sheet. However, a burden is added to the processing of the etching liquid waste and the maintenance of the working environment. Although the embossing does not cause these problems, the pattern formed is restrained by the unevenness of the embossing roll. for that reason,
There is a limit to making the uneven pattern fine, and the formed pattern has regularity.

[0004]

A plate material having a pattern repeated in the same pattern gives a monotonous impression and tends to get tired. Especially when it is used as an interior material, it is difficult to harmonize with the atmosphere in the room, and it is not possible to cope with the recent trend toward higher grades.

Therefore, there is a demand for a method capable of providing a pattern rich in originality and giving a high-class feeling instead of patterning by embossing. However, at the present time, a practical method for forming this kind of pattern relatively easily has not been developed.

The present invention has been devised in order to meet this demand. By associating the feed of the plate material to be patterned with the projection pattern of the pressing die, the pattern formed on the surface of the plate material can be highly flexibly. It is an object of the present invention to provide a plate material such as a decorative steel plate that is irregular and has excellent design.

[0007]

In order to achieve the object, the method for forming an irregular pattern according to the present invention comprises arranging a pressing die having a plurality of protrusions formed in a predetermined pattern along a conveying path of a plate material, When the plate material is relatively intermittently fed at a feed pitch that is a non-integer multiple of the pattern pitch, and when the plate material is in a stopped state relative to the pressing die, the pressing die imprints the surface of the plate material. Characterize.

The pressing die can be moved in the width direction of the plate material with an arbitrary amount of movement. The amount of movement at this time is preferably a non-integer multiple of the widthwise pitch of the protrusions provided on the pressing die. Either a method of moving the pressing die up and down at a fixed position with respect to the plate material conveying direction or a method of moving the pressing die integrally with the plate material and patterning it in transit may be adopted. The patterning by the pressing die can also be performed by pressing the plate material on a pressing die located at a fixed position in the conveying direction of the plate material, or by moving the pressing die up and down and pressing it on the surface of the plate material.

Further, the irregular pattern forming apparatus of the present invention includes a pressing die conveying path having an endless track intersecting with the conveying path of the plate material, a pressing die which runs along the pressing die conveying path, and the pressing die. A plurality of protrusions formed in a mold in a predetermined pattern, and a pusher that relatively presses the pressing die against the surface of the plate material, and a longitudinal direction of the plate material of the pressing die that is relatively pressed against the plate material and The positional deviation between the previous pressing step and the current pressing step in the width direction is set to be a non-integer multiple of the conveyance direction pitch and the plate width direction pitch of the pattern, respectively.

[0010]

[Operation] When an uneven pattern is formed on a plate material such as a steel plate by an embossing roll, the resulting uneven pattern is regular and monotonous because the positional relationship of the embossing roll is fixed in the width direction of the plate material. The cause is that
In addition, the unevenness of the surface of the rotating embossing roll is transferred to the surface of the plate material in a cyclical manner, so that the uneven pattern formed on the surface of the plate material has a low impression.

In the present invention, in order to avoid the monotonization of the pattern, the pressing die is provided with a timing between the sheet material conveying speed or feed pitch and the stamping die of the stamping die so that the same pattern is not repeated. It is adjusted according to the pitch of the protrusion pattern. Further, when the pressing die is moved also in the width direction of the plate material, it is possible to avoid repeating the pattern pattern in two dimensions. Moreover, when the pressing die is pressed against the surface of the plate material in a slightly displaced positional relationship, the concavo-convex pattern formed on the plate material becomes complicated, and a surface pattern rich in originality and exhibiting a high-class feeling is formed.

[0012]

【Example】

Example 1: (Single-sided patterning) In this example, a pressing die 20 facing the lower surface of the plate material 10 was arranged as shown in FIG. The plate material 10 is rewound from the pay-off reel 11, sent to the pressing die 20 via the pinch roll 12, and then wound up to the take-up reel 14 via the pinch roll 13. At this time, a constant tension is applied to the plate member 10 between the pinch rolls 12 and 13 by adjusting the rotation speed of the take-up reel 14 and the like.

As shown in FIG. 2, the pressing die 20 has a surface (1000 mm × 10) of a die body 21 made of a hard material such as tool steel.
A large number of protrusions 22 are formed on (00 mm). Each protrusion 22 was processed to have a length of 5 mm and a tip diameter of 0.3 mm. The distance between the protrusions 22 adjacent to each other in the plate material conveyance direction, that is, the conveyance direction pitch p ₁ was set to 5 mm. In addition, the adjacent distance in the direction orthogonal to the plate material conveying line, that is, the plate width direction pitch p _{2 is also set} to 5 mm. In the example of FIG. 1, a method of raising and lowering the pressing die 20 by the hydraulic cylinder 23 is adopted, but the raising and lowering device can be omitted.

A pusher 30 having a pressing surface whose surface area is smaller than that of the pressing die 20 is opposed to the surface of the plate material 10 on the side opposite to the pressing die 20. The pusher 30 is pressed against the surface of the plate member 10 by the hydraulic pressure supplied to the hydraulic cylinder 31 with a pressing force F via the elastic body 32. By interposing the elastic body 32, the pressing force F is transmitted to the plate member 10 as a uniform force over the entire pressing surface of the pusher 30. At this time, since the back surface of the plate material 10 is coined by the projections 22 of the pressing die 20, a coining pattern in which the pattern of the projections 22 is transferred is formed on the back surface of the plate material 10.

As the plate material 10, a stainless steel plate SUS304 having a plate thickness of 0.15 mm and a plate width of 800 mm was used. The plate material 10 was intermittently fed at a pitch of 82 mm / stroke, and the pressing die 20 was intermittently moved at a pitch of 33 mm / stroke along a direction orthogonal to the transport direction of the plate material 10. Then, when the plate material 10 is in a stopped state, the hydraulic cylinders 23 and 31 are driven to pressurize the plate material 10 between the pressing die 20 and the pusher 30.

As shown in FIG. 3 (a), an uneven pattern formed by transferring the array pattern of the projections 22 was formed on the surface of the plate member 10 by one coining. The pattern obtained is protrusion 2
The pitch p _{1 in} the conveyance direction and the pitch p 2 in the plate width direction of _{No. 2} were reflected, and the regularity was high and the impression was lacking. Further, the plate material 10 is stroked at a stroke twice the pitch p ₁
In the uneven pattern formed by repeatedly imprinting while conveying the sheet, the regularity is still high.
No substantial difference was observed from (a).

On the other hand, when the coining was repeated 5 times while shifting the positional relationship between the plate material 10 and the pressing die 20 in both the conveying direction and the plate width direction, the pattern was irregular as shown in FIG. 3 (b). And a complicated uneven pattern was formed. In addition, the spaces between individual irregularities were also very short, giving the surface an appearance that gives the impression of being carved.

In the above example, the pressing die 20 is also intermittently moved in the width direction of the plate material 10. However, even if the plate material 10 which is intermittently fed by the pressing die 20 arranged at a fixed position is coined, a much more complicated and less regular pattern than that in FIG. 3A is formed.

The protrusion 22 provided on the pressing die 20 is shown in FIG.
It is also possible to randomly form on the surface of the mold body 21 instead of the regular arrangement shown in FIG. The randomly arranged projections 22 are used for the plate material 1 in both the transport direction and the plate width direction.
Together with imprinting while shifting the positional relationship between 0 and the pressing die 20, the regularity of the pattern formed on the surface 10 of the plate material is further reduced, and a more complex and highly original design with high design is provided. It can be carried out. In this case, the entire surface length of the die body 21 is one pitch of the protrusion pattern.

Example 2: (Double-sided patterning) In this example, a lower pressing die 20d and an upper pressing die 20u were arranged on both sides of the plate member 10 as shown in FIG.
As shown in FIG. 2, a plurality of protrusions 22d and 22u were formed on the lower pressing die 20d and the upper pressing die 20u with the conveyance direction pitch p ₁ and the plate width direction pitch p ₂ both being 5 mm. However, the respective protrusions 22d and 22u are
I arranged them so that they would conflict with each other. Also, the lower pressing die 20
For both the d and the upper pressing die 20u, a system in which the hydraulic cylinders 23d and 23u are pressed against the surface of the plate material 10 is adopted.

A stainless steel plate SUS304 having a plate thickness of 0.15 mm and a plate width of 800 mm was used as a plate material, and both sides of the plate material 10 were imprinted with a lower pressing die 20d and an upper pressing die 20u. The plate material 10 was moved 72 mm between each coining process. In addition, the lower pressing die 20d and the upper pressing die 20
u was moved in the width direction which was also 8 mm. When the coining was repeated 5 times, a complicated and less regular uneven pattern similar to that shown in FIG. 3B was formed on both surfaces of the plate material 10.

Third Embodiment (Movement of Push Die along Endless Track) In this embodiment, a method of moving the push die 20 along an endless track intersecting the transport direction D of the plate material 10 was adopted. Support legs 24 _{1 to} 24 ₄ are attached to the four corners of the mold body 21, and rolling balls 25 ₁ are attached to the lower ends of the support legs 24 _{1 to} 24 _4.
The 25 ₄ is mounted. And rolling balls 25 _{1 to} 25
₄ is an endless track 2 provided below the transportation line of the plate material 10.
It is fitted in the groove to form a 6 _{1-26 4.}

As the endless tracks 26 _{1 to} 26 ₄ , the plate material 1 is used.
Various shapes can be adopted as long as a moving component of 0 crossing the transport direction D is given to the pressing die 20. Endless track 26
_{1-26 4} movement of the push type 20 along was carried out by power from a suitable driving mechanism provided on the lower surface of the die body 21 (not shown). At this time, the pressing die 20 may be moved either continuously or intermittently. However, the shift amounts of the pressing die 20 with respect to the plate material 10 in the conveying direction and the plate width direction are infinite so that the protrusions 22 formed on the pressing die 20 do not become integral multiples of the conveying direction pitch p ₁ and the plate width direction pitch p _2. Shape of track 26 _{1 to} 26 ₄ and plate material 1
It is necessary to set 0 and the moving speed and moving stroke of the pressing die 20.

A stainless steel plate SUS304 having a plate thickness of 0.15 mm and a plate width of 800 mm was used as the plate material 10.
Intermittent feed was performed at a pitch of 2 mm / stroke. On the other hand, the pressing die 20 is 10 mm along a circular orbit of 100 mm in diameter.
/ Moved intermittently by stroke. And the plate material 10
When the plate was stopped, the hydraulic cylinder 31 (see FIG. 1) was driven to press the plate material 10 against the pressing die 20.
When this coining step was repeated 5 times, the uneven pattern formed on the plate material 10 had low regularity and was complicated, as in FIG. 3B.

Further, when the conditions of intermittent feeding of the plate material 10 and the pressing die are changed, the pattern formed by the pressing die 10 having the projections 22 of the same pattern cannot be received.
The concavo-convex pattern attached to the plate material 10 changed intricately.

[0026]

As described above, in the present invention, by changing the positional relationship between the plate material and the pressing die,
Even when a pressing die having one pattern is used, a complicated and highly original uneven pattern can be formed on the surface of the plate material. Therefore, the patterned plate material becomes a product with excellent design and is used in a wide range of fields as an interior material, an exterior material, a surface layer material, and the like.

[Brief description of drawings]

1 is a schematic of the apparatus used in Example 1. FIG.

FIG. 2 Stamping die used in Example 1

FIG. 3 is a pattern (a) formed on the surface of the plate material by one coining in Example 1 and a pattern (b) formed by repeating the coining five times.

FIG. 4 is a schematic view of the apparatus used in Example 2.

5 is a schematic of the apparatus used in Example 3. FIG.

[Explanation of symbols]

10 Plate Material 20 Push Type 22 Protrusion
26 Endless track 30: Pusher p ₁ Pitch of conveyance direction of protrusion p ₂ Pitch of protrusion in plate width direction

Claims (7)

[Claims] 1. A pressing die having a plurality of protrusions formed in a predetermined pattern is arranged along a plate material conveying path, and the plate material is intermittently fed relatively at a feed pitch that is a non-integer multiple of the pitch of the pattern, A method for forming an irregular pattern, characterized in that the surface of the plate material is coined with the pressing die when the plate material is in a stopped state relative to the pressing die. 2. A pressing die having a plurality of projections formed in a predetermined pattern is arranged along a plate material conveying path, and the plate material is relatively intermittently fed at a feed pitch that is a non-integer multiple of the pitch of the pattern, Also, the pressing die is moved in the width direction of the plate material, and when the plate material is in a stopped state relative to the pressing die, the pressing die imprints the surface of the plate material with an irregular pattern. Forming method. 3. The method for forming an irregular pattern, wherein the pressing die according to claim 1 or 2 performs coining operation at a fixed position with respect to a sheet material conveying direction. 4. A method for forming an irregular pattern, wherein the pressing die according to claim 1 or 2 performs coining operation while being fed integrally with a plate material. 5. The method for forming an irregular pattern, wherein the pressing die according to claim 1 is provided on one surface of a plate material, and a pusher faces the opposite surface of the plate material. .. 6. The formation of an irregular pattern, wherein the pressing die according to claim 1 is provided on both sides of a plate material, and the protrusions formed on both pressing die are offset from each other. Method. 7. A pressing die conveyance path having an endless track that intersects the plate material conveyance passage, a pressing die that runs along the pressing die conveyance path, and a plurality of pressing die formed in a predetermined pattern. A protrusion and a pusher that presses the pressing die relatively to the surface of the plate material, and the previous pressing step and the current pressing step regarding the longitudinal direction and the width direction of the plate material of the pressing die that is pressed relatively to the plate material. An irregular pattern forming apparatus, wherein the positional deviation in the pressing step is set to a non-integer multiple of the conveyance direction pitch and the plate width direction pitch of the pattern, respectively.