JPH04349967A - Stabilizing device for adhesive spread of cold extrusion coater - Google Patents
Stabilizing device for adhesive spread of cold extrusion coaterInfo
- Publication number
- JPH04349967A JPH04349967A JP15388291A JP15388291A JPH04349967A JP H04349967 A JPH04349967 A JP H04349967A JP 15388291 A JP15388291 A JP 15388291A JP 15388291 A JP15388291 A JP 15388291A JP H04349967 A JPH04349967 A JP H04349967A
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- extrusion
- adhesive mixture
- flow rate
- pump
- 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.)
- Granted
Links
- 239000000853 adhesive Substances 0.000 title claims abstract description 93
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 93
- 230000000087 stabilizing effect Effects 0.000 title claims description 6
- 238000000641 cold extrusion Methods 0.000 title 1
- 239000000203 mixture Substances 0.000 claims abstract description 56
- 238000001125 extrusion Methods 0.000 claims abstract description 42
- 239000011248 coating agent Substances 0.000 claims abstract description 25
- 238000000576 coating method Methods 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000007765 extrusion coating Methods 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims abstract description 3
- 239000000654 additive Substances 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000003431 cross linking reagent Substances 0.000 claims description 5
- 230000001629 suppression Effects 0.000 claims description 2
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 239000007921 spray Substances 0.000 description 9
- 238000002156 mixing Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- 230000000996 additive effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000001879 gelation Methods 0.000 description 3
- 239000011120 plywood Substances 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004834 spray adhesive Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Veneer Processing And Manufacture Of Plywood (AREA)
- Coating Apparatus (AREA)
Abstract
Description
【0001】0001
【産業上の利用分野】本発明は合板、単板積層材等の建
材の製造に際して、連続的に搬送されて来るベニヤ単板
等の板状体の上面に常温より幾分低温に保持して、その
化学反応による粘度変化を極力抑制するようにした、接
着剤とその硬化剤、架橋剤等の添加剤とからなる接着剤
混和物を横一線状に押出して塗布する接着剤の冷却押出
塗布機に適用する塗布量の安定化装置に関するものであ
る。[Industrial Application Field] The present invention is applied to the production of building materials such as plywood and laminated veneer materials by keeping the upper surface of a plate-like material such as a plywood veneer that is continuously transported at a temperature slightly lower than room temperature. , cooling extrusion application of adhesive in which an adhesive mixture consisting of an adhesive and additives such as a curing agent and a crosslinking agent is extruded and applied in a horizontal line to suppress changes in viscosity due to chemical reactions as much as possible. The present invention relates to a coating amount stabilizing device applied to a machine.
【0002】0002
【従来の技術】従来のこの種類似の接着剤の塗布機は、
例えば特開平2−235974号接着剤の自動塗布装置
として、常温より幾分高温に保持して、例えば液温を2
5℃以上に保持することによってその流動抵抗を下げて
霧化作用を助勢可能にした、接着剤とその硬化剤、架橋
剤等の添加剤の所定量づつを高圧ポンプにより加圧し、
スターティックミキサー等により撹拌混合すると共に、
前記接着剤と添加剤を撹拌混合した接着剤混和物をスプ
レーガンに送って、コンベヤ上を連続的に搬送されて来
るベニヤ単板等の板状体の上面にこれを横一線状に噴霧
可能に構成した、いわゆる二液混合型加温噴霧方式の接
着剤自動塗布装置等があった。[Prior Art] Conventional adhesive applicators of this type are:
For example, in JP-A No. 2-235974, an automatic adhesive coating device is used that maintains the liquid temperature at a temperature slightly higher than room temperature, e.g.
A high-pressure pump pressurizes predetermined amounts of the adhesive and its curing agent, crosslinking agent, and other additives, which are maintained at 5°C or higher to reduce flow resistance and facilitate atomization.
While stirring and mixing with a static mixer etc.,
An adhesive mixture made by stirring and mixing the adhesive and additives can be sent to a spray gun and sprayed in a horizontal line on the upper surface of a plate-like object such as a veneer veneer that is continuously conveyed on a conveyor. There was a so-called two-liquid mixing heated spray type adhesive automatic coating device configured as follows.
【0003】0003
【発明が解決しようとする課題】しかしながら上述のよ
うな二液混合型加温噴霧方式の接着剤自動塗布装置等に
あっては、常温より幾分高温に保持された接着剤とその
添加剤とからなる接着剤混和物のスプレーガンによる霧
化作用の助勢は出来ても、経時的に惹起される前記接着
剤混和物のゲル化物質によって、スターティックミキサ
ー等の流通路が塞がれたり、スプレーガンが詰る等の障
害を多発して安定性に欠ける難点があったばかりでなく
、スプレーガンによる接着剤混和物の噴霧による板状体
への塗布態様は、いわゆるオープン方式の塗布態様とな
るため飛散する接着剤混和物が多く、塗布歩留りが著し
く低位なものとなる難点等があったものである。[Problems to be Solved by the Invention] However, in the above-mentioned two-component mixing type heated spray adhesive automatic coating device, etc., the adhesive and its additives are kept at a temperature slightly higher than room temperature. Although it is possible to assist the atomization effect of the adhesive mixture with a spray gun, the flow path of the static mixer etc. may be blocked by the gelled substance of the adhesive mixture that occurs over time. Not only did this have problems such as frequent clogging of the spray gun and lack of stability, but also the method of applying the adhesive mixture to the plate-like object by spraying it with a spray gun was a so-called open method of application. This method had the disadvantage that a large amount of the adhesive mixture was scattered and the coating yield was extremely low.
【0004】よって本発明は上記従来装置の難点を払拭
すべく、その第一の目的は、上記従来装置による常温よ
り幾分高温に保持された接着剤とその添加剤とからなる
接着剤混和物をスプレーガンにより横一線状に噴霧する
、板状体へのオープン方式による加温噴霧塗布態様を根
本的に改めて、接着剤とその添加剤とからなる接着剤混
和物を常温より幾分低温に保持して、その塗布作業中に
おける前記接着剤混和物のゲル化作用による粘度変化を
極力抑制すると共に、該接着剤混和物を押出ノズルによ
り横一線状に押出し、且つ余分な接着剤混和物はこれを
回収して再び使用する、板状体へのクローズド方式によ
る冷却押出塗布態様に改良して塗布歩留りの格段の向上
を図ることにある。[0004] Therefore, in order to eliminate the drawbacks of the above-mentioned conventional apparatus, the first object of the present invention is to create an adhesive mixture consisting of an adhesive and its additives, which is maintained at a slightly higher temperature than normal temperature by the above-mentioned conventional apparatus. We have fundamentally changed the heating spray application method using an open method onto a plate-shaped object, in which adhesive is sprayed in a horizontal line with a spray gun, and the adhesive mixture consisting of adhesive and its additives is heated to a temperature slightly lower than room temperature. The adhesive mixture is held in place to suppress changes in viscosity due to the gelling effect of the adhesive mixture during the application process, and the adhesive mixture is extruded horizontally in a straight line through an extrusion nozzle, and excess adhesive mixture is removed. The object of the present invention is to significantly improve the coating yield by improving the cooling extrusion coating method using a closed method on a plate-shaped body, in which the coating material is recovered and used again.
【0005】また本発明の第二の目的は、前記常温より
幾分低温に保持した接着剤混和物による冷却塗布態様で
あっても、該接着剤混和物の化学反応によるゲル化作用
は経時的に進行し、且つ供給されるロット毎の接着剤の
粘度にも、また添加剤との混合比にも常に若干の変動を
免れることが出来ないため、結果的には該接着剤混和物
の粘度は常に変動することになり、粘性による流動抵抗
のため押出ノズルからの吐出流量も常に変動して塗布斑
を惹起する難点が未だ残存していたのでこれを解消すべ
く、該接着剤混和物の吐出流量を流量計によって計測す
ると共に、該接着剤混和物に多少の粘度変化があっても
その計測値に応じて押出ポンプの吐出流量を自動的に一
定値に保持するように制御して、前記押出ノズルからの
吐出流量の粘度変化による流量変動を防止することによ
って、終日に亘る接着剤の長時間塗布作業での塗布量の
安定化による品質の格段の向上を図ることにある。[0005] A second object of the present invention is that even if the adhesive mixture is cooled and applied at a temperature slightly lower than normal temperature, the gelling effect due to the chemical reaction of the adhesive mixture will not occur over time. The viscosity of the adhesive and the mixing ratio with additives cannot be avoided for each lot supplied, and as a result, the viscosity of the adhesive mixture changes. Because of the flow resistance caused by viscosity, the flow rate discharged from the extrusion nozzle also constantly fluctuates, causing uneven coating. The discharge flow rate is measured by a flow meter, and even if the adhesive mixture has a slight change in viscosity, the discharge flow rate of the extrusion pump is automatically controlled to be maintained at a constant value according to the measured value, The purpose of this invention is to significantly improve quality by stabilizing the amount of adhesive applied during long-term adhesive application work that lasts all day by preventing fluctuations in the flow rate due to changes in viscosity in the flow rate discharged from the extrusion nozzle.
【0006】[0006]
【課題を解決するための手段】上記目的を達成するため
本発明の接着剤の冷却押出塗布機による塗布量の安定化
装置は、いわゆる二液混合型冷却押出方式の接着剤自動
塗布装置に係り、下記の構成要件になるものである。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a coating amount stabilizing device using an adhesive cooling extrusion coating machine, which relates to a so-called two-component mixing type cooling extrusion type adhesive automatic coating device. , has the following configuration requirements.
【0007】a) 接着剤とその硬化剤、架橋剤等の
添加剤とからなる接着剤混和物を常温より幾分低温に保
持してそのゲル化作用による粘度変化を極力抑制可能に
した冷却器、チリングユニット等からなる冷却抑制手段
。[0007] a) A cooler that maintains an adhesive mixture consisting of an adhesive and its curing agent, crosslinking agent, and other additives at a temperature slightly lower than room temperature to minimize changes in viscosity due to its gelling action. , cooling suppression means consisting of a chilling unit, etc.
【0008】b) 前記常温より幾分低温に保持した
接着剤混和物を押出ポンプにより若干加圧しながら押出
ノズルから直下の糊回収凾に向けて横一線状に押出して
コンベヤにより搬送されて来るベニヤ単板等の板状体の
上面にこれを塗布可能にした押出塗布手段。b) The adhesive mixture kept at a temperature slightly lower than normal temperature is extruded in a horizontal straight line from an extrusion nozzle toward the glue collection box directly below while being slightly pressurized by an extrusion pump, and the veneer is conveyed by a conveyor. An extrusion coating means that can apply this to the upper surface of a plate-like object such as a veneer.
【0009】c) 前記押出ノズルと押出ポンプの間
に流量計を挿入して前記押出ノズルから吐出する接着剤
混和物の流量を計測可能にした流量計測手段。c) Flow rate measuring means, which is capable of measuring the flow rate of the adhesive mixture discharged from the extrusion nozzle by inserting a flowmeter between the extrusion nozzle and the extrusion pump.
【0010】d) 前記流量計の計測値を制御器に伝
えて所定の流量設定値と比較して前記押出ポンプを駆動
する可変速モーターの回転数を自動的に制御可能にした
流量制御手段。d) Flow rate control means that transmits the measured value of the flow meter to a controller and compares it with a predetermined flow rate setting value to automatically control the rotation speed of a variable speed motor that drives the extrusion pump.
【0011】[0011]
【作用】本発明の接着剤の冷却押出塗布機は、接着剤と
その硬化剤、架橋剤等の添加剤を適当比率で、例えば1
0対1程度の比率で混合して調製した接着剤混和物を、
常温より幾分低温に、例えば気温10〜20℃の時、液
温5〜15℃程度の低温に保持して、その塗布作業中に
おける自体の化学反応によるゲル化作用の進行を極力抑
制するように、その流通経路や貯蔵タンクに各種の冷却
器を配設してチリングユニット等で造られた冷水等の冷
媒を前記冷却器内に流通させることによって、終日に亘
る長時間の塗布作業中前記接着剤混和物を常温より幾分
低温にこれを保持して自体の化学反応によるゲル化作用
の進行を極力抑制する接着剤混和物の冷却抑制手段を先
ず構成する。次で前記接着剤混和物の冷却抑制手段によ
って常温より幾分低温に保持された接着剤混和物を、ギ
ヤーポンプやモーノポンプ等の押出ポンプにより数Kg
/cm2程度に若干加圧して、多数のノズルや細隙のス
リット等からなる押出ノズルにこれを供給して、直下の
糊回収凾に向けて横一線状に押出して前記押出ノズルと
糊回収凾の中間をコンベヤにより連続的に搬送されて来
るベニヤ単板等の板状体の上面に、例えば200g/m
2程度の塗布量でこれを塗布する接着剤混和物の押出塗
布手段に構成すると共に、前記板状体の上面に塗布され
るもの以外の余分な接着剤混和物はこれを再び前記貯蔵
タンク内に回収して再度使用可能にクローズド方式に装
置される。次にまた前記押出ノズルと押出ポンプの間に
は電磁流量計等の流量計が挿入されていて、前記押出ノ
ズルから吐出する全塗布量に対する、例えば200g/
m2程度の全塗布量に対する10〜20リットル/mi
n程度の流下接着剤混和物の吐出流量を計測すると共に
、該流量計の計測値によって前記押出ポンプを駆動する
インバーター制御モーターやACサーボモーター等から
なる可変速モーターの回転数を制御器により調節して、
前記接着剤混和物に多少の粘度変化があってもその吐出
流量を自動的に一定値に保持するように、所要塗布量に
対する所定の流量設定値と比較して前記可変速モーター
の回転数を自動制御するように、接着剤混和物の流量計
測手段と流量制御手段に構成して、前記押出ノズルから
の吐出流量の粘度変化に起因する流量の変動を防止する
ことによって、終日に亘る接着剤の長時間塗布作業での
塗布量の安定化を始めて可能にしたものである。[Function] The adhesive cooling extrusion coating machine of the present invention coats the adhesive and its curing agent, crosslinking agent, and other additives in an appropriate ratio, for example, 1.
An adhesive mixture prepared by mixing at a ratio of about 0:1,
The liquid temperature is maintained at a temperature slightly lower than room temperature, for example, when the air temperature is 10 to 20 degrees Celsius, the liquid temperature is kept at a low temperature of about 5 to 15 degrees Celsius, in order to suppress the progress of gelation due to its own chemical reaction as much as possible during the application process. By distributing various types of coolers in the distribution channels and storage tanks, and circulating refrigerant such as cold water produced by a chilling unit etc. into the coolers, the above-mentioned conditions can be reduced during long coating work that lasts all day long. First, a means for suppressing cooling of the adhesive mixture is constructed, which maintains the adhesive mixture at a temperature slightly lower than room temperature to suppress the progress of gelation due to its own chemical reaction as much as possible. Next, several kilograms of the adhesive mixture, which has been maintained at a temperature slightly lower than room temperature by the cooling suppressing means for the adhesive mixture, is pumped by an extrusion pump such as a gear pump or a mono pump.
The material is slightly pressurized to about /cm2 and fed to an extrusion nozzle consisting of a large number of nozzles and slits, and extruded horizontally in a straight line toward the glue collection can directly below the extrusion nozzle and the glue collection can. For example, 200 g/m
The extrusion coating means is configured to apply an adhesive mixture in a coating amount of about 2.2 mm, and the excess adhesive mixture other than that applied to the upper surface of the plate is returned to the storage tank. It is installed in a closed system so that it can be recovered and used again. Next, a flowmeter such as an electromagnetic flowmeter is inserted between the extrusion nozzle and the extrusion pump, and the flowmeter is, for example, 200 g/
10-20 liters/mi for a total application amount of about m2
In addition to measuring the discharge flow rate of the flowing adhesive mixture of about do,
In order to automatically maintain the discharge flow rate at a constant value even if there is a slight change in the viscosity of the adhesive mixture, the rotation speed of the variable speed motor is adjusted in comparison with a predetermined flow rate setting value for the required application amount. By configuring the adhesive admixture flow rate measuring means and flow rate controlling means to automatically control the adhesive mixture over the day by preventing fluctuations in the flow rate due to viscosity changes in the discharge flow rate from the extrusion nozzle. This is the first time that it has become possible to stabilize the coating amount during long-term coating operations.
【0012】0012
【実施例】図1は本発明の配置例を示すものであって、
接着剤タンク1内に貯蔵した尿素樹脂等の接着剤を定量
供給するギヤーポンプ、モーノポンプ等からなる接着剤
供給ポンプ2と、添加剤タンク3内に貯蔵した前記尿素
樹脂に対応した、例えば塩化アンモン水溶液等の硬化剤
を定量供給するギヤーポンプ、モーノポンプ等からなる
添加剤供給ポンプ4によりミキサー5に向けて前記接着
剤と添加剤を所定の混合比のもとに計量しつつ流送する
。前記ミキサー5の外周部や、該ミキサー5によって撹
拌混合された接着剤混和物7を一時貯蔵する貯蔵タンク
8の外周部や、その他の接着剤混和物7の流通経路の周
辺部や、場合によっては前記接着剤タンク1の外周部に
は冷却器6a,6b等の冷却手段が装着されていて、こ
れらの冷却手段には冷媒製造用のチリングユニット9か
らの冷水等の冷媒が循環供給されるように装置されてい
て、前記接着剤と添加剤とからなる接着剤混和物を常温
より幾分低温の、例えば気温10〜20℃の時、液温5
〜15℃程度の低温にこれを保持して、化学反応による
ゲル化作用の進行を極力抑制する接着剤混和物の冷却抑
制手段が先ず構成されている。次で前記貯蔵タンク8内
に、前記冷却抑制手段によって常温より幾分低温に保持
された接着剤混和物7は、ギヤーポンプやモーノポンプ
等からなる押出ポンプ10により数Kg/cm2程度に
若干加圧して、多数のノズルや細隙のスリット等からな
る押出ノズル11にこれを供給して、直下の糊回収凾1
2に向けて横一線状に押出して前記押出ノズル11と糊
回収凾12の中間をコンベヤ13により連続的に搬送さ
れて来るベニヤ単板等の板状体14の上面に、例えば2
00g/m2程度の塗布量でこれを塗布する接着剤混和
物の押出塗布手段に構成すると共に、前記板状体14の
上面に塗布されるもの以外の余分な流下接着剤混和物7
aはこれを再び前記貯蔵タンク8内に自然落下若しくは
適宜の回収ポンプにより回収して再度使用可能にクロー
ズド方式に装置される。次にまた前記押出ポンプ10と
押出ノズル11の間には電磁流量計等の流量計15が挿
入されていて、前記押出ノズル11から吐出する全塗布
量に対する、例えば200g/m2程度の全塗布量に対
する10〜20リットル/min程度の流下接着剤混和
物7aの流量を計測すると共に、該流量計15の計測値
によって前記押出ポンプ10の回転数を調節してその吐
出流量を一定値に保持可能に、例えばPID動作の制御
器16等を前記押出ポンプ10を駆動するインバーター
制御モーターやACサーボモーター等からなる可変速モ
ーター17と前記流量計15との間に挿入して、前記流
下接着剤混和物7aに多少の粘度変化があってもその吐
出流量を自動的に一定値に保持するように、所要塗布量
に対する所定の流量設定値と比較して前記可変速モータ
ー17の回転数を自動制御するように、接着剤混和物の
流量計測手段と流量制御手段に構成されているものであ
る。[Example] FIG. 1 shows an example of the arrangement of the present invention.
An adhesive supply pump 2 consisting of a gear pump, mono pump, etc. that supplies a fixed amount of adhesive such as urea resin stored in an adhesive tank 1; and an aqueous solution of ammonium chloride, for example, corresponding to the urea resin stored in an additive tank 3. The adhesive and additive are metered and flowed at a predetermined mixing ratio to a mixer 5 by an additive supply pump 4, which is a gear pump, mono pump, etc., which supplies a fixed amount of a curing agent such as the like. The outer periphery of the mixer 5, the outer periphery of the storage tank 8 that temporarily stores the adhesive mixture 7 stirred and mixed by the mixer 5, the periphery of other distribution channels for the adhesive mixture 7, and as the case may be. Cooling means such as coolers 6a and 6b are attached to the outer periphery of the adhesive tank 1, and refrigerant such as cold water from a chilling unit 9 for producing refrigerant is circulated and supplied to these cooling means. The adhesive mixture consisting of the adhesive and additives is heated at a liquid temperature of 5° C. at a temperature slightly lower than room temperature, for example, at an air temperature of 10 to 20° C.
First, a means for suppressing cooling of the adhesive mixture is constructed, which maintains the adhesive mixture at a low temperature of about 15 DEG C. and suppresses the progress of gelation due to chemical reaction as much as possible. Next, in the storage tank 8, the adhesive mixture 7, which has been kept at a temperature slightly lower than room temperature by the cooling suppressing means, is slightly pressurized to about several kg/cm2 by an extrusion pump 10 consisting of a gear pump, mono pump, etc. , the extrusion nozzle 11 consisting of a large number of nozzles and slits, etc.
For example, on the upper surface of a plate-shaped body 14 such as a veneer veneer, which is extruded in a horizontal line toward 2 and continuously conveyed by a conveyor 13 between the extrusion nozzle 11 and the glue collection box 12,
The adhesive mixture extrusion coating means applies the adhesive mixture in a coating amount of about 0.00 g/m2, and the excess flowing adhesive mixture 7 other than that applied to the upper surface of the plate-shaped body 14 is
A is installed in a closed system so that it can be collected again by gravity into the storage tank 8 or by an appropriate collection pump and used again. Next, a flow meter 15 such as an electromagnetic flow meter is inserted between the extrusion pump 10 and the extrusion nozzle 11, and the total amount of application is about 200 g/m2, for example, with respect to the total amount of application discharged from the extrusion nozzle 11. It is possible to measure the flow rate of the flowing adhesive mixture 7a at a rate of about 10 to 20 liters/min, and to maintain the discharge flow rate at a constant value by adjusting the rotation speed of the extrusion pump 10 based on the measured value of the flow meter 15. For example, a PID operation controller 16 or the like is inserted between the flowmeter 15 and the variable speed motor 17, such as an inverter control motor or AC servo motor that drives the extrusion pump 10, to mix the flowing adhesive. The rotation speed of the variable speed motor 17 is automatically controlled by comparing it with a predetermined flow rate setting value for the required coating amount so that the discharge flow rate is automatically maintained at a constant value even if there is a slight change in the viscosity of the object 7a. The adhesive mixture flow rate measuring means and flow rate control means are configured to do this.
【0013】[0013]
【発明の効果】本発明は以上に説明したように、接着剤
混和物の化学反応による粘度変化を極力抑制する冷却抑
制手段と、前記接着剤混和物を横一線状に押出して板状
体に塗布する押出塗布手段と、前記接着剤混和物の押出
流量を計測すると共に前記接着剤混和物に多少の粘度変
化があってもその吐出流量を自動的に一定値に保持する
流量計測手段と流量制御手段とからなる接着剤の冷却押
出塗布機による塗布量の安定化装置であるから、本発明
による時は従来装置のスプレーガンによる二液混合型接
着剤混和物のオープン方式による加温噴霧塗布手段の難
点であった、スプレーガンの詰りや低位な塗布歩留りを
、本発明の常温より幾分低温に保持した接着剤混和物の
押出ノズルによるクローズド方式の冷却押出塗布手段に
よってこれを解消し、また常に若干の粘度変化はこれを
免れることが出来ないこの種二液混合型接着剤混和物の
粘性による流動抵抗の変化に起因する塗布斑の発生に対
応しても、本発明の流量計と押出ポンプによる流量計測
制御手段によってこれを悉く解消したものであり、特に
本発明は合板、単板積層材等の建材の製造に際しての、
終日に亘る接着剤の長時間塗布作業においても、よくそ
の高塗布歩留りの持続による接着剤消費の節約と、安定
塗布量の持続による製品品質の均等化を同時に達成する
ことが出来た、実施効果の極めて顕著なものである。Effects of the Invention As explained above, the present invention includes a cooling suppressing means for suppressing changes in viscosity due to chemical reactions of an adhesive mixture as much as possible, and a method for extruding the adhesive mixture in a horizontal line to form a plate-shaped body. An extrusion coating means for coating, a flow rate measuring means for measuring the extrusion flow rate of the adhesive mixture, and automatically maintaining the discharge flow rate at a constant value even if the adhesive mixture has a slight change in viscosity; Since the device is a device for stabilizing the coating amount using a cooling extrusion coating machine for adhesive, which includes a control means, the present invention is capable of applying heated spraying of a two-component adhesive mixture using a conventional device using a spray gun using an open method. The clogging of the spray gun and low coating yield, which were the disadvantages of this method, have been overcome by the closed cooling extrusion coating method using the extrusion nozzle of the adhesive mixture maintained at a temperature slightly lower than room temperature, according to the present invention. In addition, the flowmeter of the present invention can be used to cope with the occurrence of coating spots caused by changes in flow resistance due to the viscosity of this type of two-component adhesive mixture, which is always subject to slight viscosity changes. All of these problems have been solved by a flow rate measurement control means using an extrusion pump, and in particular, the present invention is suitable for manufacturing building materials such as plywood and laminated veneer materials.
The implementation effect was that we were able to simultaneously achieve savings in adhesive consumption by maintaining a high coating yield and equalization of product quality by maintaining a stable coating amount, even during long adhesive coating operations that lasted all day long. This is extremely remarkable.
【図1】 配置例を示す側面図である。FIG. 1 is a side view showing an example of arrangement.
1 接着剤タンク 2 接着剤供給ポンプ 3 添加剤タンク 4 添加剤供給ポンプ 5 ミキサー 6a,6b 冷却器 7 接着剤混和物 7a 流下接着剤混和物 8 貯蔵タンク 9 チリングユニット 10 押出ポンプ 11 押出ノズル 12 糊回収凾 13 コンベヤ 14 板状体 15 流量計 16 制御器 17 可変速モーター 1 Adhesive tank 2 Adhesive supply pump 3 Additive tank 4 Additive supply pump 5 Mixer 6a, 6b Cooler 7 Adhesive mixture 7a Flowing adhesive mixture 8 Storage tank 9 Chilling unit 10 Extrusion pump 11 Extrusion nozzle 12 Glue collection box 13 Conveyor 14 Plate-shaped body 15 Flowmeter 16 Controller 17 Variable speed motor
Claims (1)
剤とからなる接着剤混和物を常温より幾分低温に保持し
てそのゲル化作用による粘度変化を極力抑制可能にした
冷却器、チリングユニット等からなる冷却抑制手段と、
前記常温より幾分低温に保持した接着剤混和物を押出ポ
ンプにより若干加圧しながら押出ノズルから直下の糊回
収凾に向けて横一線状に押出してコンベヤにより搬送さ
れて来るベニヤ単板等の板状体の上面にこれを塗布可能
にした押出塗布手段と、前記押出ノズルと押出ポンプの
間に流量計を挿入して前記押出ノズルから吐出する接着
剤混和物の流量を計測可能にした流量計測手段と、前記
流量計の計測値を制御器に伝えて所定の流量設定値と比
較して前記押出ポンプを駆動する可変速モーターの回転
数を自動的に制御可能にした流量制御手段とからなるこ
とを特徴とする接着剤の冷却押出塗布機による塗布量の
安定化装置。[Claim 1] A cooler that maintains an adhesive mixture consisting of an adhesive and its curing agent, crosslinking agent, and other additives at a temperature slightly lower than room temperature to minimize changes in viscosity due to its gelling action. , cooling suppression means consisting of a chilling unit, etc.;
A board such as a veneer veneer that is kept at a slightly lower temperature than the room temperature and is extruded in a horizontal line from an extrusion nozzle toward a glue collection box directly below while applying slight pressure with an extrusion pump and is conveyed by a conveyor. An extrusion coating means capable of applying the adhesive mixture to the upper surface of a shaped body, and a flow rate measurement device capable of measuring the flow rate of the adhesive mixture discharged from the extrusion nozzle by inserting a flow meter between the extrusion nozzle and the extrusion pump. and a flow control means that transmits the measured value of the flow meter to a controller and compares it with a predetermined flow rate setting value to automatically control the rotation speed of a variable speed motor that drives the extrusion pump. A device for stabilizing the coating amount using an adhesive cooling extrusion coating machine, characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3153882A JP2580408B2 (en) | 1991-05-28 | 1991-05-28 | Adhesive mixture automatic application device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3153882A JP2580408B2 (en) | 1991-05-28 | 1991-05-28 | Adhesive mixture automatic application device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04349967A true JPH04349967A (en) | 1992-12-04 |
JP2580408B2 JP2580408B2 (en) | 1997-02-12 |
Family
ID=15572177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3153882A Expired - Lifetime JP2580408B2 (en) | 1991-05-28 | 1991-05-28 | Adhesive mixture automatic application device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2580408B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5716481A (en) * | 1994-10-31 | 1998-02-10 | Tdk Corporation | Manufacturing method and manufacturing apparatus for ceramic electronic components |
JP2007330935A (en) * | 2006-06-19 | 2007-12-27 | Tokyo Ohka Kogyo Co Ltd | Treatment liquid supply apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5840170A (en) * | 1981-08-31 | 1983-03-09 | Matsushita Electric Works Ltd | Flow coater |
JPH0169673U (en) * | 1987-06-18 | 1989-05-09 |
-
1991
- 1991-05-28 JP JP3153882A patent/JP2580408B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5840170A (en) * | 1981-08-31 | 1983-03-09 | Matsushita Electric Works Ltd | Flow coater |
JPH0169673U (en) * | 1987-06-18 | 1989-05-09 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5716481A (en) * | 1994-10-31 | 1998-02-10 | Tdk Corporation | Manufacturing method and manufacturing apparatus for ceramic electronic components |
JP2007330935A (en) * | 2006-06-19 | 2007-12-27 | Tokyo Ohka Kogyo Co Ltd | Treatment liquid supply apparatus |
Also Published As
Publication number | Publication date |
---|---|
JP2580408B2 (en) | 1997-02-12 |
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