JPH0454575B2 - - Google Patents
Info
- Publication number
- JPH0454575B2 JPH0454575B2 JP8909383A JP8909383A JPH0454575B2 JP H0454575 B2 JPH0454575 B2 JP H0454575B2 JP 8909383 A JP8909383 A JP 8909383A JP 8909383 A JP8909383 A JP 8909383A JP H0454575 B2 JPH0454575 B2 JP H0454575B2
- Authority
- JP
- Japan
- Prior art keywords
- plywood
- base material
- curved
- veneer
- joined
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011120 plywood Substances 0.000 claims description 44
- 239000000463 material Substances 0.000 claims description 32
- 239000000853 adhesive Substances 0.000 claims description 11
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 11
- 229920001187 thermosetting polymer Polymers 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000005304 joining Methods 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 10
- 239000002245 particle Substances 0.000 description 9
- 239000000758 substrate Substances 0.000 description 7
- 238000007796 conventional method Methods 0.000 description 4
- 239000011162 core material Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Landscapes
- Finished Plywoods (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、パーテイクルボード等を基材とし、
この基材を挾んで２枚の合板を積層したものを折
曲げ且つ一体的に接合するようになした成型合板
の製造方法に関し、特に所定の曲率をもつて形成
されるスピーカキヤビネツトを構成する成型合板
に適用して有用なものである。[Detailed description of the invention] [Industrial application field] The present invention uses particle board or the like as a base material,
A method of manufacturing molded plywood in which two sheets of plywood are laminated with this base material sandwiched between them and then bent and integrally joined, particularly for constructing a speaker cabinet formed with a predetermined curvature. It is useful when applied to molded plywood.
従来、スピーカが取付けられるスピーカキヤビ
ネツトの構成材料として反りやねじれを発生しに
くい合板が広く用いられている。そして、スピー
カキヤビネツトにあつては、スピーカを駆動させ
たとき可聴帯域に共振点が発生しないようにする
ため、パーテイクルボードや石膏ボード等を芯材
とした合板が用いられている。さらに、この種の
スピーカキヤビネツトにあつては、スピーカから
放射された再生音が上記キヤビネツトの鋭角なコ
ーナ部により回析現象を発生させるのを防止する
ため、キヤビネツト本体を楕円柱体として形成し
たものが提供されている。
Conventionally, plywood, which does not easily warp or twist, has been widely used as a constituent material for speaker cabinets to which speakers are attached. In the case of speaker cabinets, plywood with particle board, gypsum board, or the like as a core material is used to prevent resonance points from occurring in the audible band when the speaker is driven. Furthermore, in this type of speaker cabinet, the main body of the cabinet is formed as an elliptical cylinder in order to prevent the reproduced sound emitted from the speaker from causing diffraction due to the sharp corners of the cabinet. is provided.
ところで、キヤビネツト本体が楕円柱体として
形成されるものを、パーテイクルボード等を芯材
とした合板で構成するには、半楕円柱状の前部及
び後部キヤビネツト半体を形成し、これら半体を
突合せ一体化することにより形成している。この
ような半楕円柱状の前部及び後部キヤビネツト半
体を上述の如き合板で形成するには、この合板を
所定の曲率をもつて湾曲形成する必要がある。そ
して、パーテイクルボードの如き材料を芯材とし
た合板は、上記パーテイクルボードが変形しにく
いものであるため、次のような方法により湾曲形
成している。 By the way, in order to construct a cabinet whose main body is formed as an elliptical cylinder using plywood with particle board or the like as a core material, the front and rear cabinet halves are formed in the shape of a semi-elliptical cylinder, and these halves are It is formed by butting and integrating. In order to form such semi-elliptical columnar front and rear cabinet halves using plywood as described above, it is necessary to curve the plywood to a predetermined curvature. Plywood made of a material such as particle board as a core material is curved by the following method because the particle board is difficult to deform.
まず、パーテイクルボードの如き基材１の片面
に化粧を施した外装面となる単板２を接合したも
のを用意し、上記基材１に曲げ方向と直交する方
向に複数条の切込み溝３を第１図Ａに示すように
穿設し、次いで上記単板２を接合した面と対向す
る裏面側に第１図Ｂに示すように単板４を接合す
る。このように基材２の表裏に単板２及び４を接
合した平板状の合板５を、成型用金型装置を用い
て上記切込み溝３と直交する方向に湾曲形成する
ようにしている。 First, a base material 1 such as a particle board is prepared with a decorated veneer 2 bonded to one side, and a plurality of cut grooves 3 are formed in the base material 1 in a direction perpendicular to the bending direction. A hole is made as shown in FIG. 1A, and then a veneer 4 is bonded to the back side opposite to the surface to which the veneer 2 is bonded, as shown in FIG. 1B. In this way, the flat plywood 5 in which the veneers 2 and 4 are bonded to the front and back sides of the base material 2 is formed into a curved shape in a direction perpendicular to the cut groove 3 using a molding die device.
このように合板５を湾曲形成したとき、パーテ
イクルボードの如く変形しにくい基材１に穿設し
た切込み溝３は、曲率半径が小さい内周面側から
外周面側に亘つて第２図に示す如く扇形に大きく
開口する。そして、上述の如く基材２に単板２，
４を接合した合板５をその後湾曲形成する方法に
あつては、曲率半径の大きくなる外周面側の単板
２は、大きく開口する切込み溝３の部分で鋭角に
折れ曲り各切込み溝３に対応して突起状部６が形
成されてしまい滑らかに湾曲した曲面を形成する
ことができない。特に曲率を大きくしようとする
と切込み溝３の数も多くなるので上述の如き突起
状部６が密集してしまい、さらに滑らかに湾曲し
た曲面が形成できなくなつてしまう。また、突起
状部６が発生する曲率半径の大きくなる外周面側
に単板２を数枚重ね合わせても、基板２に各単板
２，４を接合した後に湾曲形成する方法にあつて
は、上記突起状部６の発生を防止することができ
なかつた。 When the plywood 5 is formed into a curve in this way, the cut grooves 3 bored in the base material 1 that is difficult to deform, such as particle board, extend from the inner peripheral surface side with a small radius of curvature to the outer peripheral surface side as shown in FIG. As shown, it has a large fan-shaped opening. Then, as described above, the veneer 2,
In the method of subsequently forming a curve on the plywood 5 to which the veneer 4 is bonded, the veneer 2 on the outer peripheral surface side where the radius of curvature becomes larger is bent at an acute angle at the part of the cut groove 3 that opens wide, and corresponds to each cut groove 3. As a result, protrusions 6 are formed, making it impossible to form a smoothly curved surface. In particular, if the curvature is increased, the number of cut grooves 3 will also increase, resulting in the above-mentioned protrusions 6 crowding together, making it impossible to form a smoothly curved surface. Furthermore, even if several veneers 2 are stacked on the outer circumferential surface side where the protrusion 6 is generated and the radius of curvature becomes larger, the method of forming a curve after bonding each veneer 2 and 4 to the substrate 2 will not work. However, it was not possible to prevent the protrusion 6 from occurring.
上述のように従来の方法にあつては、湾曲した
外周面に突起状部が形成されてしまうため、スピ
ーカキヤビネツトとして形成したとき外観上の体
裁を悪化させてしまう。そこで、上記突起状部を
削り落す工程を必要とし、さらに体裁を整えるた
め必要以上の塗装が必要になるなど製造工程が複
雑化する欠点がある。 As described above, in the conventional method, protrusions are formed on the curved outer peripheral surface, which deteriorates the appearance when formed as a speaker cabinet. Therefore, there is a drawback that the manufacturing process becomes complicated, such as requiring a step of scraping off the protruding portion, and requiring more painting than necessary to improve the appearance.
そこで、本発明者は鋭意研究を重ね、上述した
従来の方法の如く湾曲部分に突起状部が生ずるこ
となく、滑らかな湾曲面を形成し得る成型合板の
製造方法を提供することを目的に本発明を提案す
るものである。
Therefore, the inventor of the present invention has conducted extensive research and has developed the present invention with the aim of providing a method for manufacturing molded plywood that can form a smooth curved surface without producing protrusions on the curved portions as in the conventional methods described above. It proposes an invention.
そして、上述の如き目的を達成するため、片面
に繊維方向が曲げ方向となるようにして単板を接
合するとともに上記曲げ方向と直交する方向に複
数条の切込み溝を設けた基材を挾んで繊維方向が
互に直交するように少なくとも２枚の単板を接合
し上記基材への接合面に熱硬化型接着剤を塗布し
た２枚の合板を積層した後、加圧して上記切込み
溝と直交する方向に湾曲するとともに加熱して上
記熱硬化型接着剤を硬化させ上記基材及び各合板
を一体的に接合するようにしたものである。
In order to achieve the above-mentioned purpose, the veneers are joined together on one side so that the fiber direction is the bending direction, and a base material with a plurality of cut grooves in a direction perpendicular to the bending direction is sandwiched between the veneers. At least two sheets of veneer are joined so that the fiber directions are perpendicular to each other, and two sheets of plywood are coated with a thermosetting adhesive on the surface to be joined to the base material, and then pressure is applied to form the cut grooves. The substrate is curved in orthogonal directions and heated to cure the thermosetting adhesive, thereby integrally joining the base material and each plywood.
以下、本発明の具体的な実施例を、図面を参照
して説明する。
Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
まず、本発明は、パーテイクルボードあるいは
石膏ボードの如き基材１１を用意しこの基材１１
の片面に単板１２を接着剤を介して第３図に示す
ように接合する。この、単板１２は、湾曲形成す
るとき基板１１から分離しないように変位方向を
考慮して繊維方向が曲げ方向となるように接合す
る。このように単板１２を接合した基板１１の湾
曲される部分に曲げ方向と直交するように複数条
の切込み溝１３を第４図に示すように穿設する。
これら切込み溝１３は、曲率が大きくなる部分に
は密に、曲率が小さくなる部分には疎に設けられ
る。 First, in the present invention, a base material 11 such as particle board or gypsum board is prepared, and this base material 11
A veneer 12 is bonded to one side of the plate with an adhesive as shown in FIG. This veneer 12 is bonded so that the fiber direction is in the bending direction, taking into account the displacement direction so as not to separate from the substrate 11 when curved. As shown in FIG. 4, a plurality of cut grooves 13 are bored perpendicular to the bending direction in the curved portion of the substrate 11 to which the veneer 12 is bonded in this way.
These cut grooves 13 are provided densely in areas where the curvature is large and sparsely provided in areas where the curvature is small.
そして、上記基板１１を挾んで上記単板１２側
に繊維方向が互に直交するように２枚の単板１４
ａ，１４ｂを接合し上記単板１２への接合面側に
熱硬化型接着剤１５を塗布した合板１４を積層す
る。この合板１４の外側面側に位置する単板１４
ａは、その表面にウレタン塗装等が施され化粧板
として形成される。また、上記基板１１の単板が
接合された片面と対向する背面側には、繊維方向
が互に直交するように２枚の単板１６ａ，１６ｂ
を接合し、上記基板１１の接合面側に熱硬化型接
着剤１５を塗布した合板１６を積層する。なお、
基材１１に積層される各合板１４，１６は、外側
面に臨む各単板１４ａ，１６ａの繊維方向が曲げ
方向と直交するように積層され、後述の如く湾曲
形成したとき折曲げられた繊維が外方に臨まない
ようになされている。 Then, sandwiching the substrate 11, two veneers 14 are placed on the veneer 12 side so that the fiber directions are perpendicular to each other.
A, 14b are joined together, and a plywood 14 coated with a thermosetting adhesive 15 on the side to be joined to the veneer 12 is laminated. A veneer 14 located on the outer side of this plywood 14
A is formed as a decorative board by applying urethane coating or the like to its surface. Further, on the back side opposite to the one side to which the veneers of the substrate 11 are bonded, two veneers 16a and 16b are arranged so that the fiber directions are orthogonal to each other.
A plywood 16 coated with a thermosetting adhesive 15 is laminated on the bonding surface side of the substrate 11. In addition,
Each plywood 14, 16 laminated on the base material 11 is laminated so that the fiber direction of each veneer 14a, 16a facing the outer surface is perpendicular to the bending direction, and the fibers bent when formed into a curve as described later. This is done so that it is not exposed to the outside world.
上述の如く基材１１を挾んで２枚の合板１４，
１６を積層した積層体１７は、第６図に示す如く
所望する湾曲形状に形成された上型１８と下型１
９からなる金型装置２０により加圧され基材１１
の切込み溝１３と直交する方向に湾曲される。こ
の金型装置２０による湾曲加工中に、高周波加熱
手段により加熱され、上記各合板１４，１６に塗
布された熱硬化型接着剤１５を硬化させる。そう
すると、所定形状に湾曲形成された状態で、基材
１１及び各合板１４，１６は第７図に示すように
一体化して接合される。このように、金型装置２
０による湾曲加工中に熱硬化型接着剤１５を硬化
させるので、基材１１に接合される各合板１４，
１６は、基材１１に一体化されることなくこの基
材１１の湾曲変位に追随しながらそれぞれ独立に
湾曲変位して湾曲され、その後上記基材１１に一
体的に接合するため、これら合板１４，１６の少
なくとも外側面側に臨む単板１４ａ，１６ａは折
れ曲り、切込み溝１３に対応する部分に突起状部
を生じさせることがなくなり、すなわち本発明
は、互に接合される基材１１と各合板１４，１６
間を完全に接合させないすべりを生じさせるに足
る状態で湾曲させた後接合を図るものであるの
で、前述した従来の方法の如く接合される合板１
４，１６に折目を生じさせることもなくなる。 As mentioned above, the base material 11 is sandwiched between the two plywood sheets 14,
6, the laminate 17 has an upper mold 18 and a lower mold 1 formed into a desired curved shape as shown in FIG.
The base material 11 is pressurized by the mold device 20 consisting of
The cut groove 13 is curved in a direction perpendicular to the cut groove 13 . During the bending process by the mold device 20, the thermosetting adhesive 15 applied to each of the plywood boards 14 and 16 is cured by heating by the high-frequency heating means. Then, the base material 11 and each of the plywood boards 14 and 16, which are curved into a predetermined shape, are integrally joined as shown in FIG. 7. In this way, the mold device 2
Since the thermosetting adhesive 15 is cured during the bending process by 0, each plywood 14,
These plywood boards 14 are not integrated with the base material 11, but are independently curved and curved while following the curved displacement of the base material 11, and are then integrally joined to the base material 11. . Each plywood 14, 16
Since the plywood 1 is to be joined after being curved in a state sufficient to cause slippage that prevents complete joining, the plywood 1 to be joined as in the conventional method described above is
4 and 16 will no longer be created.
なお、熱硬化型接着剤１５の硬化は、前述の如
く高周波加熱手段に限られず他の加熱手段を用い
ても良く、また上記硬化は積層体１７の湾曲形成
を完了させた後に行なうようにしてもよい。 Note that the curing of the thermosetting adhesive 15 is not limited to the high-frequency heating means as described above, but other heating means may also be used, and the above-mentioned curing is performed after the curvature of the laminate 17 is completed. Good too.
そして、本発明方法によれば、基材１１に接合
される合板１４，１６に折目を生ずることなく湾
曲させた合板が得られ、さらに曲率の大きな湾曲
形状をも容易に形成することが可能となる。
According to the method of the present invention, it is possible to obtain curved plywood without creating creases in the plywood 14 and 16 joined to the base material 11, and it is also possible to easily form a curved shape with a large curvature. becomes.
そこで、第８図に示す如く平面の楕円を次式
（ｘ／ａ）4＋（ｙ／ｂ）4＝１
より求められる形状となしたいわゆる超楕円柱体
のスピーカキヤビネツト２１の如きものも外周面
に合板１４が折れることにより生ずる突起状部が
発生させることなく形成できる。そして、この種
のスピーカキヤビネツト２１を形成するとき上記
突起状部をなくすための処理がなくなり、さらに
塗装も容易となり、製造が極めて容易となる。Therefore, as shown in FIG. 8, a speaker cabinet 21 of a so-called superelliptic cylinder shape is constructed, with an ellipse in the plane determined by the following equation (x/a) 4 + (y/b) 4 = 1. It is also possible to form a protrusion on the outer circumferential surface of the plywood 14 without producing any protrusions caused by bending the plywood 14. Further, when forming this type of speaker cabinet 21, there is no need for any treatment to eliminate the protruding portions, and furthermore, painting becomes easy, making manufacturing extremely easy.
なお、上述の如き超楕円柱体のスピーカキヤビ
ネツト２１は、スピーカ２２の取付け面となる前
面部が滑らかな面となるので、スピーカ２２の取
付が容易となるとともに両側が鋭角な角部を有し
ない湾曲面となすことができるので再生音の回析
現象の発生を防止できるものである。 In addition, since the speaker cabinet 21 having a super elliptical columnar structure as described above has a smooth front surface on which the speaker 22 is mounted, it is easy to mount the speaker 22 and there are no sharp corners on both sides. Since it can be made into a curved surface without having any curved surface, it is possible to prevent the occurrence of diffraction phenomenon of reproduced sound.
上述した如く本発明によれば、芯材に変形しに
くいパーテイクルボードや石膏ボード等を基材と
して合板を湾曲形成する際に、上記基材に接合さ
れる合板に折目による突起状部を生じさせること
なく滑らかな湾曲面を形成させることができ、外
観の良好な成型合板の成型が可能となり、本発明
方法により成型される合板を用いることにより、
滑らかな外観を有し、後処理を必要としない製造
の容易な湾曲面を有するスピーカキヤビネツト等
のキヤビネツトの構成が可能となる。
As described above, according to the present invention, when forming a curved plywood using a core material such as particle board or gypsum board that is hard to deform as a base material, a protrusion formed by a crease is formed on the plywood joined to the base material. By using the plywood molded by the method of the present invention, it is possible to form a smooth curved surface without causing any curved surfaces, and it is possible to mold plywood with a good appearance.
It is possible to construct a cabinet such as a speaker cabinet having a curved surface that has a smooth appearance and is easy to manufacture without requiring post-processing.
第１図は従来例による成型合板の製造方法を示
し、第１図Ａは基材への切込み溝の穿設状態を示
す斜視図であり、第１図Ｂは上記基材へ単板を接
合した状態を示す斜視図であり、第２図は従来の
成型合板の湾曲状態を示す拡大断面図である。第
３図から第７図は本発明方法を工程順に示すもの
であつて、第３図は基材へ単板を接合した状態を
示す斜視図であり、第４図は基材へ切込み溝を穿
設した状態を示す斜視図であり、第５図は基材へ
の合板の積層状態を示す斜視図であり、第６図は
成型状態を説明する図であり、第７図は成型され
た合板を示す断面図である。第８図は本発明方法
による成型合板を用いて構成されたスピーカキヤ
ビネツトを示す斜視図である。
１１……基材、１２……単板、１３……切込み
溝、１４，１６……合板、１５……熱硬化型接着
剤。
Fig. 1 shows a conventional method for manufacturing molded plywood, Fig. 1A is a perspective view showing the state of cutting grooves in the base material, and Fig. 1B shows the joining of the veneer to the base material. FIG. 2 is an enlarged sectional view showing a conventional molded plywood in a curved state. Figures 3 to 7 show the method of the present invention in the order of steps, with Figure 3 being a perspective view showing the state in which the veneer is bonded to the base material, and Figure 4 showing cut grooves in the base material. FIG. 5 is a perspective view showing the state in which plywood is laminated to the base material, FIG. 6 is a diagram illustrating the molded state, and FIG. 7 is a diagram showing the molded state. It is a sectional view showing plywood. FIG. 8 is a perspective view showing a speaker cabinet constructed using molded plywood according to the method of the present invention. 11... Base material, 12... Single plate, 13... Cut groove, 14, 16... Plywood, 15... Thermosetting adhesive.
Claims (1)
単板を接合するとともに上記曲げ方向と直交する
方向に複数条の切込み溝を設けた基材を挾んで繊
維方向が互に直交するように少なくとも２枚の単
板を接合し上記基材への接合面に熱硬化型接着剤
を塗布した２枚の合板を積層した後、加圧して上
記切込み溝と直交する方向に湾曲するとともに加
熱して上記熱硬化型接着剤を硬化させ上記基材及
び各合板を一体的に接合するようにした成型合板
の製造方法。1. Join the veneers on one side so that the fiber direction is the bending direction, and sandwich the base material with a plurality of cut grooves in a direction perpendicular to the bending direction, so that the fiber directions are at least perpendicular to each other. After bonding two veneers and laminating two plywood sheets coated with a thermosetting adhesive on the surface to be joined to the base material, pressurize to curve in a direction perpendicular to the cut grooves and heat. A method for producing molded plywood, comprising curing the thermosetting adhesive and integrally joining the base material and each plywood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8909383A JPS59214638A (en) | 1983-05-23 | 1983-05-23 | Manufacture of molded flitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8909383A JPS59214638A (en) | 1983-05-23 | 1983-05-23 | Manufacture of molded flitch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59214638A JPS59214638A (en) | 1984-12-04 |
| JPH0454575B2 true JPH0454575B2 (en) | 1992-08-31 |
Family
ID=13961263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8909383A Granted JPS59214638A (en) | 1983-05-23 | 1983-05-23 | Manufacture of molded flitch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59214638A (en) |
-
1983
- 1983-05-23 JP JP8909383A patent/JPS59214638A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59214638A (en) | 1984-12-04 |
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