阅读说明：本技术 压花加工模具、压花加工装置以及压花加工方法 (Embossing die, embossing device, and embossing method ) 是由 中岛茂 青木伸之 于 2020-03-03 设计创作，主要内容包括：本发明提供压花加工模具、压花加工装置以及压花加工方法。压花加工模具设于压花加工装置。由设于压花加工装置的加热部对压花加工模具进行加热。压花加工模具包括凸状的模具部。模具部与形成于基体材料的表面的一个凹部对应。模具部是由狭缝分割出的多个突起的集合体。狭缝设于与基体材料的表面接触的模具部的外表面。在狭缝中,切入方向与模具部的高度方向对应。多个突起经由狭缝而相邻。(The invention provides an embossing die, an embossing device and an embossing method. The embossing mold is arranged on the embossing device. The embossing die is heated by a heating unit provided in the embossing device. The embossing die includes a convex die portion. The mold portion corresponds to one concave portion formed on the surface of the base material. The mold part is an aggregate of a plurality of projections divided by slits. The slit is provided on the outer surface of the mold portion in contact with the surface of the base material. In the slit, the cutting direction corresponds to the height direction of the die portion. The plurality of protrusions are adjacent via the slit.)

1. An embossing processing die arranged on an embossing processing device is characterized in that,

the embossing die is heated by a heating unit provided in the embossing device,

comprises a convex mold part corresponding to one concave part formed on the surface of the base material,

the die part is an aggregate of a plurality of projections divided by slits, the slits are provided on the outer surface of the die part in contact with the surface of the base material, and the cutting direction corresponds to the height direction of the die part,

the plurality of projections are adjacent to each other via the slit.

2. The embossing tooling mold of claim 1,

the plurality of protrusions include:

a first protrusion having a height dimension in the height direction of a first value; and

and a second protrusion having a height dimension of a second value smaller than the first value and being adjacent to the first protrusion via the slit.

3. The embossing tooling mold of claim 1,

the plurality of protrusions include:

a first protrusion having a height dimension in the height direction of a first value; and

and a second protrusion having the height dimension of the first value.

4. An embossing device, comprising:

the embossing tool of claim 1;

the heating section; and

an embossing receiving mold for clamping the base material together with the embossing processing mold.

5. An embossing device, comprising:

the embossing tool of claim 2;

the heating section; and

an embossing receiving mold for clamping the base material together with the embossing processing mold.

6. An embossing device, comprising:

the embossing tool of claim 3;

the heating section; and

an embossing receiving mold for clamping the base material together with the embossing processing mold.

7. An embossing method performed by the embossing apparatus according to claim 4,

the method includes an embossing step of pressing the die part against the surface of the base material to form a concave portion in the surface of the base material.

8. An embossing method performed by the embossing apparatus according to claim 5,

the method includes an embossing step of pressing the die part against the surface of the base material to form a concave portion in the surface of the base material.

9. An embossing method performed by the embossing apparatus according to claim 6,

the method includes an embossing step of pressing the die part against the surface of the base material to form a concave portion in the surface of the base material.

Technical Field

The present application claims priority from japanese patent application No.2019-039083, filed 3, 4, 2019, and is incorporated herein by reference in its entirety.

The present disclosure relates to an embossing die of an embossing apparatus, and an embossing method performed by the embossing apparatus.

Background

Techniques related to embossing processing are proposed. For example, japanese patent No. 5913755 discloses a method for producing a seat skin material and an emboss roller. The seat skin material is formed by forming an embossed pattern on the surface of a long material. The manufacturing method includes a step of pressing the long material. In this process, an elongated material is passed between an embossing roll and a flat roll. The emboss roller is provided with a plurality of emboss portions protruding from the base surface. The embossing part has a long side surface and a short side surface. The long side and the short side are formed perpendicularly from the base surface of the emboss roller. In the embossed portion, a portion highest from the base surface is formed as a planar top surface substantially parallel to the base surface. The long side surface and the top surface are connected. Five height differences are formed between the short side surfaces and the top surface. The five height differences are formed to have the same shape and the same size. The five height differences are composed of a bottom surface and a vertical surface. The bottom surface is a surface substantially parallel to the base surface. The elevation is a plane substantially perpendicular to the base plane. The plurality of embossed portions are arranged in the following state. The above state is a state in which the height differences of two adjacent embossed portions face each other. In addition, the above state is a state in which the long side surfaces of two adjacent embossed portions face each other. A gap of about 1mm is formed between the base surface and the facing of the strip material. The base surface is not in contact with the surface of the facing of the strip material. A concave portion is formed on the surface material side of the seat skin material by heating and pressing the embossed portion. The surface of the long material pressed by the facing portions of the two embossed portions has a shape in which gentle inclined surfaces are adjacent to each other. The surface of the long material pressed by the facing portions of the long side surfaces of the two embossed portions is a steep inclined surface which is substantially vertical. The surface gloss of the skin material for a seat varies depending on the direction of observation. The minute step of the embossed portion is considered to be a thin line formed in the lateral direction of the gentle inclined surface.

Disclosure of Invention

An aspect of the present invention is an embossing die provided in an embossing apparatus, wherein the embossing die is heated by a heating unit provided in the embossing apparatus, the embossing die includes a convex die portion corresponding to one concave portion formed on a surface of a base material, the die portion is an assembly of a plurality of protrusions divided by slits provided on an outer surface of the die portion in contact with the surface of the base material, a cutting direction corresponds to a height direction of the die portion, and the plurality of protrusions are adjacent to each other via the slits.

According to the embossing die, the area of the die portion in contact with the surface of the base material can be reduced. In a state where the embossing die is heated by the heating portion, the amount of heat applied from the die portion to the base material can be reduced. Thereby, the inner surface of the recess can be made to be a surface without partial reflection.

In the embossing die, the plurality of protrusions preferably include: a first protrusion having a height dimension in the height direction of a first value; and a second protrusion having a height dimension of a second value smaller than the first value and being adjacent to the first protrusion via the slit. According to this structure, the concave portion having the following shape can be formed on the surface of the base material. The shape is a shape in which the bottom surface is inclined with respect to the surface of the base material.

In the embossing die, the plurality of protrusions preferably include: a first protrusion having a height dimension in the height direction of a first value; and a second protrusion having the height dimension of the first value. According to this structure, the concave portion having the following shape can be formed on the surface of the base material. The above-mentioned shape is a shape in which the bottom surface is along the surface of the base material.

Another aspect of the present invention is an embossing apparatus including: the embossing die of any of the above aspects; the heating section; and an embossing receiving mold for sandwiching the base material together with the embossing processing mold.

Another aspect of the present invention is an embossing method performed by the embossing apparatus, including an embossing step of pressing the die portion against the surface of the base material to form a concave portion in the surface of the base material.

According to the embossing apparatus and the embossing method, the inner surface of the concave portion can be a surface which does not reflect light locally.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, an embossing die, an embossing device, and an embossing method capable of manufacturing a decorative sheet having excellent design properties can be obtained.

Drawings

Fig. 1 is a perspective view showing an example of a schematic structure of a decorative sheet.

Fig. 2 is a perspective view showing an example of a schematic structure of the base material. The decorative sheet of fig. 1 is shown before embossing.

Fig. 3 is a side view showing an example of a schematic configuration of the embossing apparatus. The embossing die and the embossing receiving die have a flat plate shape. The base material and the decorative sheet show portions corresponding to the embossing device.

Fig. 4 is a perspective view showing an example of a schematic configuration of the mold section. The die portion corresponds to the die portion of the embossing die of fig. 3. And a part of the embossing die is shown with a part in the width direction omitted.

Fig. 5 is a perspective view showing another example of the schematic structure of the mold section. The die part is shown with slits in the width and length directions. And a part of the embossing die is shown with a part in the width direction omitted.

Fig. 6 is a perspective view showing another example of the schematic configuration of the concave portion. A portion of a decorative sheet is shown.

The upper view of fig. 7 is a perspective view showing another example of the schematic structure of the mold section. The mold part corresponds to the recess of fig. 6. And shows a portion of an embossing tool. The lower view of fig. 7 is a Y-direction view of the upper view.

Fig. 8 is a perspective view showing another example of the schematic configuration of the concave portion. A portion of a decorative sheet is shown.

The upper view of fig. 9 is a perspective view showing another example of the schematic structure of the mold section. The mold portion corresponds to the recess of fig. 8. And shows a portion of an embossing tool. The lower view of fig. 9 is a Y-direction view of the upper view.

Fig. 10 is a perspective view showing another example of the schematic configuration of the concave portion. A part of the decorative sheet is shown with a part in the short side direction omitted.

The upper view of fig. 11 is a perspective view showing another example of the schematic structure of the mold section. The mold portion corresponds to the concave portion of fig. 10. And a part of the embossing die is shown with a part in the width direction omitted. The lower view of fig. 11 is a Y-direction view of the upper view.

Fig. 12 is a side view showing another example of the schematic configuration of the embossing apparatus. The embossing die and the embossing receiving die have a roll shape. The state in which the embossing die is pressed against the embossing receiving die is shown. The base material, the decorative sheet, and the portion of the elastic portion of the embossing receiving mold into which the mold portion of the embossing mold is fitted are cut into a section. The base material and the decorative sheet show portions corresponding to the embossing device.

Fig. 13 is a perspective view showing another example of a schematic structure of an embossing die. The embossing die corresponds to the embossing die of fig. 12.

Description of the symbols

10-decorative sheet, 20-base material, 22-first sheet, 24-second sheet, 26-third sheet, 30-recess, 50-embossing device, 60-embossing die, 62-shaft, 64-base surface, 70-die part, 80-embossing receiving die, 82-shaft, 84-elastic part, 86-main body part, 90-heating part, 95-supply device, 96-recovery device, P, P1, P2, P3, P4, P5, P6, P7-protrusion, S, S1, S2, S3, S4, S5, S6, SL-slit, W-space.

Detailed Description

The decorative sheet is a skin material for a predetermined product or part. In the decorative sheet, a concave portion is provided on the surface of the base material. An embossing device is used for manufacturing a decorative sheet. The embossing device performs an embossing method to emboss the surface of the base material. The embossing device is provided with an embossing die. The embossing die includes a convex die portion corresponding to the concave portion. The embossing method may be performed in a state where the embossing die is heated. In the embossing method, the heated mold part is pressed against the surface of the base material, thereby forming a concave portion in the surface of the base material. The inventors know that local light reflection (テカリ) is easily generated on the inner surface of the concave portion by pressing the heated mold portion to the surface of the base material. The local light reflection generated at the inner surface of the recess deteriorates the design of the decorative sheet.

In view of the above, an object of the present invention is to provide an embossing die, an embossing device, and an embossing method that can manufacture a decorative sheet having excellent design properties.

Embodiments for carrying out the present invention will be described with reference to the drawings. The present invention is not limited to the following configurations, and various configurations within the same technical concept can be adopted. For example, a part of the following structures may be omitted or replaced with another structure. Other configurations may also be included.