JPH059251B2 - - Google Patents
Info
- Publication number
- JPH059251B2 JPH059251B2 JP31719889A JP31719889A JPH059251B2 JP H059251 B2 JPH059251 B2 JP H059251B2 JP 31719889 A JP31719889 A JP 31719889A JP 31719889 A JP31719889 A JP 31719889A JP H059251 B2 JPH059251 B2 JP H059251B2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- thermocouple
- wall surface
- band heater
- small piece
- 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 - Lifetime
Links
- 230000001681 protective effect Effects 0.000 claims description 23
- 238000001746 injection moulding Methods 0.000 claims description 20
- 239000011347 resin Substances 0.000 claims description 20
- 229920005989 resin Polymers 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 description 9
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 2
- 238000010411 cooking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1782—Mounting or clamping means for heating elements or thermocouples
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は射出成形機のノズル用熱電対及びその
取付方法並びに熱電対を具備する射出成形機ノズ
ルに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a thermocouple for a nozzle of an injection molding machine, a method for attaching the same, and an injection molding machine nozzle equipped with the thermocouple.
（従来の技術）
射出成形機の射出シリンダの先端には、金型に
先端が当接して溶融樹脂を射出するノズルが取り
付けられている。(Prior Art) A nozzle is attached to the tip of an injection cylinder of an injection molding machine, the tip of which comes into contact with a mold and injects molten resin.
このノズルは、金型と射出シリンダとを連結す
ると共に金型に射出される溶融樹脂の温度を決定
する部分でもあるため、ノズル壁面にバンドヒー
タ等の加熱手段を設けてノズル内の溶融樹脂温度
を制御することがある。 This nozzle connects the mold and the injection cylinder and also determines the temperature of the molten resin injected into the mold, so a heating means such as a band heater is installed on the nozzle wall to increase the temperature of the molten resin inside the nozzle. may be controlled.
この様な場合には、ノズル内の溶融樹脂温度を
測定することを要するが、溶融樹脂中に熱電対の
感熱部を挿入して溶融樹脂温度を直接測定するこ
とができないため、通常、ノズル壁面中の温度を
測定して溶融樹脂温度として制御系にフイードバ
ツクされる。 In such cases, it is necessary to measure the temperature of the molten resin inside the nozzle, but since it is not possible to directly measure the temperature of the molten resin by inserting the heat-sensitive part of a thermocouple into the molten resin, it is usually necessary to measure the temperature of the molten resin inside the nozzle wall. The temperature inside is measured and fed back to the control system as the molten resin temperature.
ところで、射出成形機の射出シリンダ等におけ
る溶融樹脂温度の測定には、一般的に第４図に示
す温度検出端が汎用されている。 By the way, the temperature detection end shown in FIG. 4 is generally used to measure the temperature of molten resin in an injection cylinder or the like of an injection molding machine.
かかる温度検出端は、熱電対１０８の感熱部が
保護管１０２の先端に封入されつつ保護管１０２
と熱電対１０８とが一体となつているものであ
る。 Such a temperature detection end is configured such that the heat sensitive part of the thermocouple 108 is enclosed in the tip of the protection tube 102 and
and a thermocouple 108 are integrated.
更に、保護管１０２の中途に形成されるはネジ
部１０４を、射出シリンダ等の壁１００に穿設さ
れる穴のネジ部に、ナツト１０６を工具で回転せ
しめることによつて螺合させ保護管１０２を壁１
００に固着することができる。 Further, a threaded portion 104 formed in the middle of the protection tube 102 is screwed into a threaded portion of a hole drilled in a wall 100 of an injection cylinder or the like by rotating a nut 106 with a tool. 102 to wall 1
It can be fixed to 00.
（発明が解決しようとする課題）
第４図に示す温度検出端は、取扱いが容易であ
るため、肉厚の厚い射出シリンダ等に取り付けら
れている。(Problems to be Solved by the Invention) The temperature detection end shown in FIG. 4 is attached to a thick-walled injection cylinder or the like because it is easy to handle.
しかしながら、第４図に示す温度検出端は、保
護管１０２の固着をネジ部１０４の螺合によつて
行つているため、壁１００中に比較的大径で且つ
深い穴を穿設することを要する。 However, since the temperature detection end shown in FIG. 4 fixes the protection tube 102 by screwing the threaded portion 104, it is not necessary to drill a relatively large diameter and deep hole in the wall 100. It takes.
更に、射出シリンダ壁面を加熱するバンドヒー
タ等の加熱手段に温度検出端の取付用穴を設ける
ことも必要とする。 Furthermore, it is also necessary to provide a hole for mounting a temperature detection end in a heating means such as a band heater that heats the wall surface of the injection cylinder.
他方、金型と当接して溶融樹脂を射出する射出
成形機のノズル（以下、ノズルと称することがあ
る）のように肉厚が薄く且つ比較的小形のもので
は、前記従来の温度検出端では種々の問題があ
る。 On the other hand, in the case of a thin-walled and relatively small nozzle (hereinafter sometimes referred to as a nozzle) of an injection molding machine that injects molten resin by coming into contact with a mold, the conventional temperature detection end cannot be used. There are various problems.
つまり、熱電対を保護する保護管を細くするこ
とは可能ではあるが、ノズル壁に穿設する穴の深
さや径は、ノズルの機械的強度、熱電対の穴底部
への押付力、ネジの加工性、及び温度検出端のメ
ンテナンス等の観点から一定の範囲に限られる。 In other words, it is possible to make the protective tube that protects the thermocouple thinner, but the depth and diameter of the hole drilled in the nozzle wall are determined by the mechanical strength of the nozzle, the pressing force of the thermocouple against the bottom of the hole, and the screw strength. It is limited to a certain range from the viewpoint of processability and maintenance of the temperature detection end.
このため、螺着によつて熱電対の保護管をノズ
ル壁に強固に固着することは困難なことが多い。 For this reason, it is often difficult to firmly fix the thermocouple protection tube to the nozzle wall by screwing.
また、バンドヒータ等の加熱手段に温度検出端
取付用の穴を設けることは、ノズル壁面の加熱効
率を大幅に低下させることにもなる。 Furthermore, providing a hole for attaching a temperature detection end to a heating means such as a band heater will also significantly reduce the heating efficiency of the nozzle wall surface.
そこで、本発明の目的は、ノズル壁面に容易に
固着可能で且つ加熱手段の加熱効率も低下させる
ことのない射出成形機のノズル用熱電対及びその
取付方法並びに熱電対を具備する射出成形機ノズ
ルを提供することにある。 SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a thermocouple for a nozzle of an injection molding machine that can be easily fixed to a nozzle wall surface and that does not reduce the heating efficiency of the heating means, a method for attaching the same, and an injection molding machine nozzle equipped with the thermocouple. Our goal is to provide the following.
（課題を解決する手段）
本発明者は、前記目的を達成するには、熱電対
の保護管のノズル壁への固着をネジに因る螺着に
替えて締付具によつてノズル壁面に取り付けられ
るバンドヒータ等の加熱手段を利用して行うこと
が有効ではないかと考えて検討した結果、本発明
に到達した。(Means for Solving the Problems) In order to achieve the above object, the inventors of the present invention believe that, in order to achieve the above object, the protective tube of the thermocouple is fixed to the nozzle wall by replacing the fixing of the thermocouple to the nozzle wall with a screw. As a result of considering that it would be effective to use a heating means such as an attached band heater, we arrived at the present invention.
即ち、本発明は、射出成形機のノズル中の溶融
樹脂温度を測定する熱電対であつて、該熱電対本
体の感熱部が封入されている保護管がノズル外壁
面に穿設されている小穴に挿入され保護管先端が
小穴底部に当接するとき、前記保護管のノズル外
壁面に相当する位置に、締付手段によつてノズル
外壁面に密着固定可能の小片が装着されているこ
とを特徴とする射出成形機のノズル用熱電対であ
る。 That is, the present invention relates to a thermocouple for measuring the temperature of molten resin in a nozzle of an injection molding machine, and a small hole in which a protective tube in which a heat-sensitive part of the thermocouple body is enclosed is bored in the outer wall surface of the nozzle. A small piece is attached to the protection tube at a position corresponding to the nozzle outer wall surface of the protection tube, which can be tightly fixed to the nozzle outer wall surface by a tightening means when the protection tube tip is inserted into the small hole and comes into contact with the bottom of the small hole. This is a thermocouple for the nozzle of an injection molding machine.
また、射出成形機のノズル内の溶融樹脂温度を
測定する熱電対を取り付ける際に、該ノズルの外
壁面に穿設されている小穴内に、前記射出成形機
のノズル用熱電対の保護管先端を小穴底部に当接
するように挿入し、保護管の小片をノズル外壁面
に密着せしめ、次いで前記小片の上面にノズルを
加熱する加熱手段を当接させてから締付具によつ
て加熱手段及び小片をノズル外壁面に固着するこ
とを特徴とするノズル用熱電対の取付方法にあ
る。 In addition, when attaching a thermocouple to measure the temperature of molten resin in the nozzle of the injection molding machine, the tip of the protective tube of the thermocouple for the nozzle of the injection molding machine is inserted into the small hole drilled in the outer wall surface of the nozzle. The small piece of the protective tube is brought into close contact with the outer wall surface of the nozzle, and then the heating means for heating the nozzle is brought into contact with the top surface of the small piece, and then the heating means and A method for attaching a thermocouple for a nozzle, characterized by fixing a small piece to the outer wall surface of the nozzle.
更に、射出成形機のノズルにおいて、該ノズル
外壁面に締付具によつて開口部を形成するように
縮径してバンドヒータが装着されており、前記バ
ンドヒータの開口部から挿入される前記射出成形
機のノズル用熱電対の保護管先端がノズル外壁面
に穿設されている小穴底部に当接され、且つバン
ドヒータの開口部間内側を跨がるようにノズル外
壁面に密着されている前記保護管の小片がバンド
ヒータの縮径によつて固定されていることを特徴
とする熱電対を具備する射出成形機ノズルであ
る。 Furthermore, in the nozzle of the injection molding machine, a band heater is attached to the outer wall surface of the nozzle by reducing its diameter so as to form an opening with a fastener, and the band heater is inserted through the opening of the band heater. The tip of the protective tube of the thermocouple for the nozzle of the injection molding machine is brought into contact with the bottom of the small hole drilled in the outside wall of the nozzle, and is also brought into close contact with the outside wall of the nozzle so as to straddle the inside of the opening of the band heater. This is an injection molding machine nozzle equipped with a thermocouple, characterized in that a small piece of the protective tube is fixed by a diameter reduction of a band heater.
（作用）
本発明によれば、熱電対の保護管に設けられて
いる小片を、保護管の先端をノズル壁に穿設され
ている小穴底部に押圧しつつ締付具によつてノズ
ル壁面に固着することができる。(Function) According to the present invention, a small piece provided in a thermocouple protection tube is attached to a nozzle wall surface using a fastener while pressing the tip of the protection tube into the bottom of a small hole drilled in the nozzle wall. Can be fixed.
この様にして保護管及びノズル壁の穴内にネジ
部を形成することなく保護管の先端部をノズル壁
の小穴内に固着することができる。 In this way, the tip of the protective tube can be fixed in the small hole in the nozzle wall without forming a threaded portion in the hole in the protective tube and the nozzle wall.
本発明においては、保護管及びノズル壁の穴内
にネジ部を形成することを必要とせず、保護管及
びノズル壁の穴を小穴とすることができるため、
加熱手段の隙間等を利用して温度検出端をノズル
に取り付けることが可能となり、加熱手段の加熱
効率も低下させることがない。 In the present invention, it is not necessary to form threaded portions in the holes in the protection tube and nozzle wall, and the holes in the protection tube and nozzle wall can be made into small holes.
It becomes possible to attach the temperature detection end to the nozzle using a gap in the heating means, and the heating efficiency of the heating means is not reduced.
更に、ノズル壁に穿設する穴径を小径にするこ
とができるため、従来よりも深穴を穿設してもノ
ズルの機械的強度等を低下させることがない。こ
のため、熱電対本体の感熱部が取り付けられてい
る保護管の先端をノズルの溶融樹脂路に可及的に
接近させることができ、ノズル中の溶融樹脂温度
を一層正確に測定することができる。 Furthermore, since the diameter of the hole drilled in the nozzle wall can be made small, the mechanical strength of the nozzle will not be reduced even if the hole is drilled deeper than before. Therefore, the tip of the protective tube to which the heat-sensitive part of the thermocouple body is attached can be brought as close as possible to the molten resin path in the nozzle, making it possible to measure the molten resin temperature in the nozzle more accurately. .
（実施例） 本発明を図面を用いて更に詳細に説明する。(Example) The present invention will be explained in more detail using the drawings.
第１図は、本発明の一実施例を示す側面図であ
り、熱電対Ａの保護管１には、熱電対本体が封入
されており、先端部２には熱電対本体の感熱部が
封入されている。 FIG. 1 is a side view showing an embodiment of the present invention, in which a thermocouple main body is enclosed in a protective tube 1 of a thermocouple A, and a heat-sensitive part of the thermocouple main body is enclosed in a tip part 2. has been done.
この保護管１の途中には、小片３が抜止め４に
よつて先端部１の方向に抜止めがなされつつ取り
付けられており、小片３は抜止め４よりも上部に
は自在に移動或いは回転することができる。小片
３をノズル壁面の任意の位置で且つ任意の方向に
密着させることができるようにするためである。 A small piece 3 is attached to the middle of the protective tube 1 while being prevented from coming out in the direction of the tip 1 by a retainer 4, and the small piece 3 can be freely moved or rotated above the retainer 4. can do. This is to enable the small piece 3 to be brought into close contact with the nozzle wall surface at any position and in any direction.
また、抜止め４は、後述する様に、保護管１の
先端２をノズル壁面に穿設されている穴の底部に
当接させたとき、ノズルの外壁面に沿つて小片３
が密着する位置に設けられている。 Further, as will be described later, the retainer 4 has a small piece 3 along the outer wall surface of the nozzle when the tip 2 of the protective tube 1 is brought into contact with the bottom of the hole drilled in the nozzle wall surface.
It is placed in a position where it comes into close contact with the
この様な第１図に示す熱電対Ａが射出成形機の
ノズルに装着されている状態を第３図ａ，ｂに示
す。 FIGS. 3a and 3b show the state in which the thermocouple A shown in FIG. 1 is attached to the nozzle of an injection molding machine.
第３図ａ，ｂに示す様に、本実施例のノズル
は、シリンダヘツド１１に、中心部に溶融樹脂路
９が形成され且つ外壁面に締付具によつて加熱手
段としてのバンドヒータ５が固着されているノズ
ル本体１０が取り付けられている。 As shown in FIGS. 3a and 3b, the nozzle of this embodiment has a molten resin passage 9 formed in the center of the cylinder head 11, and a band heater 5 as a heating means attached to the outer wall surface by a fastener. A nozzle body 10 to which is fixed is attached.
バンドヒータ５は、ノズル本体１０の長軸に平
行に設けられている二本の棒状体１２，１２に端
部が巻かれている締付板６によつて締め付けられ
つつノズル本体１０の外壁面に固着されている。 The band heater 5 is attached to the outer wall of the nozzle body 10 while being tightened by a tightening plate 6 whose ends are wound around two rod-shaped bodies 12, 12 provided parallel to the long axis of the nozzle body 10. is fixed to.
かかる締付板６の締付力は、棒状体１２，１２
を貫通する締付ネジ７，７によつて生じている。 The tightening force of the tightening plate 6 is
This is caused by the tightening screws 7, 7 passing through.
本実施例の熱電対Ａは、第３図ｂに示す様に、
バンドヒータ５の合わせ目にできる隙間１４から
保護管１の先端部がノズル本体１０に穿設されて
いる穴に挿入されている。 The thermocouple A of this example is as shown in Fig. 3b.
The tip of the protective tube 1 is inserted into a hole bored in the nozzle body 10 through a gap 14 formed at the seam of the band heater 5.
この様にノズル本体１０の穴に挿入された保護
管１は、その途中に設けられ且つ抜止め４で先端
２の方向に抜け止めされている小片３がバンドヒ
ータ５とノズル本体１０の外壁面とによつて挟着
され、前記穴の底部に保護管１の先端２を当接さ
せつつノズル本体１０に固着される。 The protection tube 1 inserted into the hole of the nozzle body 10 in this way has a small piece 3 provided in the middle thereof and prevented from coming off in the direction of the tip 2 by the retainer 4, which is attached to the band heater 5 and the outer wall surface of the nozzle body 10. The protective tube 1 is sandwiched between the holes, and is fixed to the nozzle body 10 with the tip 2 of the protective tube 1 in contact with the bottom of the hole.
本実施例において用いるノズル本体１０の外壁
面には、第３図ｂに示す様に、小片３の厚さ及び
幅を有する溝８が形成されている。この溝８は、
ノズル本体１０に小片３を締付板６によつてバン
ドヒータ５と共に取り付けたとき、バンドヒータ
５の一部がノズル本体１０の外壁面から浮き上が
り空炊き状態になることを防止するためである。 A groove 8 having the thickness and width of the small piece 3 is formed in the outer wall surface of the nozzle body 10 used in this embodiment, as shown in FIG. 3b. This groove 8 is
This is to prevent a part of the band heater 5 from floating up from the outer wall surface of the nozzle body 10 and causing an empty cooking state when the small piece 3 is attached to the nozzle body 10 together with the band heater 5 by the tightening plate 6.
第３図に示す様に熱電対Ａをノズル本体１０に
固着するには、先ず熱電対の感熱部が封入されて
いる保護管１の先端２をノズル本体１０に穿設さ
れている穴の底部に当接するように挿入し、保護
管１に挿入されている小片３を溝８に挿入する。 To fix the thermocouple A to the nozzle body 10 as shown in FIG. and insert the small piece 3 inserted into the protective tube 1 into the groove 8.
次いで、締付板６、棒状体１２，１２、及び締
付ネジ７，７によつて筒状に形成されているバン
ドヒータ５を、バンドヒータ５の合わせ目の空隙
１４が熱電対Ａの挿入位置になるようにノズル本
体１０の外壁面に挿入する。 Next, the band heater 5, which is formed into a cylindrical shape by the tightening plate 6, the rod-shaped bodies 12, 12, and the tightening screws 7, is inserted so that the gap 14 at the seam of the band heater 5 allows the thermocouple A to be inserted. Insert it into the outer wall surface of the nozzle body 10 so that it is in the correct position.
更に、締付ネジ７，７によつて締付板６を締め
付けてバンドヒータ５及び小片３をノズル本体１
０の外壁面に固着することによつて、熱電対Ａを
ノズル本体１０に固着することができる。 Furthermore, the band heater 5 and the small piece 3 are attached to the nozzle body 1 by tightening the tightening plate 6 with the tightening screws 7, 7.
By fixing the thermocouple A to the outer wall surface of the nozzle body 10, the thermocouple A can be fixed to the nozzle body 10.
この様に本実施例によれば、保護管１及びノズ
ル本体１０に穿設される穴にはネジ部を設けるこ
となく熱電対Ａを固着することができる。 In this manner, according to this embodiment, the thermocouple A can be fixed to the holes drilled in the protection tube 1 and the nozzle body 10 without providing any threaded portions.
更に、バンドヒータ５の合わせ目等の間隙を利
用して熱電対Ａを取り付けることができ、バンド
ヒータ５に特別に熱電対取付用穴を開孔する必要
もない。 Furthermore, the thermocouple A can be attached using gaps such as joints of the band heater 5, and there is no need to make a special hole for attaching the thermocouple in the band heater 5.
以上、述べてきた実施例においては、第１図に
示す熱電対、つまり先端２の方向への抜止め４が
保護管１に設けられている熱電対Ａを用いてきた
が、第２図に示す用に、小片３の上下方向に抜止
め４，６が設けられている熱電対Ａも使用するこ
とができる。第２図に示す熱電対Ａは、小片３が
所定の位置に常に在るため、熱電対の取扱いを容
易にすることができる。 In the embodiments described above, the thermocouple shown in FIG. 1, that is, the thermocouple A in which the protective tube 1 is provided with a retainer 4 in the direction of the tip 2, has been used. As shown, a thermocouple A in which retainers 4 and 6 are provided in the upper and lower directions of the small piece 3 can also be used. In the thermocouple A shown in FIG. 2, since the small piece 3 is always in a predetermined position, the thermocouple can be easily handled.
更に、ノズル本体１０に設けられている小片３
用の溝８は、小片３が薄くバンドヒータ５がノズ
ル本体１０の周面に実質的に密着する場合には設
けなくてもよい。 Furthermore, a small piece 3 provided on the nozzle body 10
The groove 8 may not be provided if the small piece 3 is thin and the band heater 5 is in substantially close contact with the circumferential surface of the nozzle body 10.
また、本実施例では、バンドヒータ５の縮径を
利用して熱電対Ａの小片３を固定しているが、バ
ンドヒータ５を使用しない場合においては、小片
３を固定するための締付具によつて固定させても
よい。 Further, in this embodiment, the small piece 3 of the thermocouple A is fixed using the diameter reduction of the band heater 5, but when the band heater 5 is not used, a tightening tool for fixing the small piece 3 may be used. It may be fixed by.
尚、本実施例の熱電対Ａは、ノズル本体１０の
長軸方向及び／又は周方向に複数個に設置しても
よいことは勿論のことである。 It goes without saying that a plurality of thermocouples A in this embodiment may be installed in the longitudinal direction and/or circumferential direction of the nozzle body 10.
（発明の効果）
本発明によれば、ノズルを通過する溶融樹脂の
温度をノズルの複数箇所で測定することができる
ため、ノズル中の溶融樹脂温度を精度よく制御す
ることができる。(Effects of the Invention) According to the present invention, the temperature of the molten resin passing through the nozzle can be measured at a plurality of locations on the nozzle, so the temperature of the molten resin in the nozzle can be accurately controlled.
また、熱電対本体を封入する保護管及びノズル
本体に穿設されている穴には、ネジ部が設けられ
ておらず、メンテナンス等を容易に行うこともで
きる。 Furthermore, the holes bored in the protective tube that encloses the thermocouple body and the nozzle body are not provided with threaded portions, making maintenance and the like easier.
第１図は本発明の一実施例を示す側面図、第２
図は他に実施例を示す側面図、第３図は第１図に
示す熱電対Ａを装着したノズルの縦断面図及び横
断面図、及び第４図は従来の温度検出端の取付状
態を示す断面図を各々示す。
図において、Ａ……熱電対、１……保護管、２
……保護管１の先端、３……小片、４……抜止
め、５……バンドヒータ、６……締付板、７……
締付ネジ、９……溶融樹脂路、１０……ノズル本
体。
Figure 1 is a side view showing one embodiment of the present invention, Figure 2 is a side view showing one embodiment of the present invention;
The figure also shows a side view of an embodiment, FIG. 3 is a vertical cross-sectional view and a cross-sectional view of a nozzle equipped with the thermocouple A shown in FIG. 1, and FIG. A cross-sectional view is shown in each case. In the figure, A...Thermocouple, 1...Protection tube, 2
... Tip of protection tube 1, 3 ... Small piece, 4 ... Retainer, 5 ... Band heater, 6 ... Tightening plate, 7 ...
Tightening screw, 9... Molten resin path, 10... Nozzle body.
Claims (1)
する熱電対であつて、該熱電対本体の感熱部が封
入されている保護管がノズル外壁面に穿設されて
いる小穴に挿入され保護管先端が小穴底部に当接
するとき、前記保護管のノズル外壁面に相当する
位置に、締付手段によつてノズル外壁面に密着固
定可能の小片が装着されていることを特徴とする
射出成形機のノズル用熱電対。 ２ 射出成形機のノズル内の溶融樹脂温度を測定
する熱電対を取り付ける際に、該ノズルの外壁面
に穿設されている小穴内に、請求項第１項記載の
熱電対の保護管先端を小穴底部に当接するように
挿入し、保護管の小片をノズル外壁面に密着せし
め、次いで前記小片の上面にノズルを加熱する加
熱手段を当接させてから締付具によつて加熱手段
及び小片をノズル外壁面に固着することを特徴と
するノズル用熱電対の取付方法。 ３ 射出成形機のノズルにおいて、該ノズル外壁
面に締付具によつて開口部を形成するように縮径
してバンドヒータが装着されており、前記バンド
ヒータの開口部から挿入される請求項第１項記載
の熱電対の保護管先端がノズル外壁面に穿設され
ている小穴底部に当接され、且つバンドヒータの
開口部間内側を跨がるようにノズル外壁面に密着
されている前記保護管の小片がバンドヒータの縮
径によつて固定されていることを特徴とする熱電
対を具備する射出成形機ノズル。[Claims] 1. A thermocouple for measuring the temperature of molten resin in a nozzle of an injection molding machine, wherein a protective tube in which a heat-sensitive part of the thermocouple body is enclosed is bored in the outer wall of the nozzle. When the protection tube is inserted into the small hole and the tip of the protection tube comes into contact with the bottom of the small hole, a small piece that can be tightly fixed to the nozzle outer wall surface by the tightening means is attached to the protection tube at a position corresponding to the nozzle outer wall surface. Features thermocouples for injection molding machine nozzles. 2. When installing a thermocouple for measuring the temperature of molten resin in the nozzle of an injection molding machine, the tip of the protective tube of the thermocouple according to claim 1 is inserted into a small hole drilled in the outer wall surface of the nozzle. The small piece of the protection tube is inserted so as to be in contact with the bottom of the small hole, and the small piece of the protection tube is brought into close contact with the outer wall surface of the nozzle. Next, the heating means for heating the nozzle is brought into contact with the top surface of the small piece, and then the heating means and the small piece are removed with a tightening tool. A method for attaching a thermocouple for a nozzle, characterized by fixing the thermocouple to the outer wall surface of the nozzle. 3. In a nozzle of an injection molding machine, a band heater is attached to an outer wall surface of the nozzle by reducing its diameter so as to form an opening using a fastener, and the band heater is inserted through the opening of the band heater. The tip of the protective tube of the thermocouple described in item 1 is brought into contact with the bottom of the small hole drilled in the outer wall of the nozzle, and is in close contact with the outer wall of the nozzle so as to straddle the inside of the opening of the band heater. An injection molding machine nozzle equipped with a thermocouple, characterized in that the small piece of the protective tube is fixed by a diameter reduction of a band heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31719889A JPH03176113A (en) | 1989-12-05 | 1989-12-05 | Thermocouple for nozzle of injection molding machine, its fitting method and nozzle of injection molding machine provided with thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31719889A JPH03176113A (en) | 1989-12-05 | 1989-12-05 | Thermocouple for nozzle of injection molding machine, its fitting method and nozzle of injection molding machine provided with thermocouple |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03176113A JPH03176113A (en) | 1991-07-31 |
| JPH059251B2 true JPH059251B2 (en) | 1993-02-04 |
Family
ID=18085555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31719889A Granted JPH03176113A (en) | 1989-12-05 | 1989-12-05 | Thermocouple for nozzle of injection molding machine, its fitting method and nozzle of injection molding machine provided with thermocouple |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03176113A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107297875A (en) * | 2016-04-14 | 2017-10-27 | 发那科株式会社 | Injection machine with temperature adjustment sleeve pipe |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5000515A (en) * | 1989-02-14 | 1991-03-19 | Hoover Universal, Inc. | Variable density foam vehicle seat |
| IT1269965B (en) * | 1994-06-29 | 1997-04-16 | Co M At Dme S P A | NOZZLE FOR INJECTION MOLDING OF PLASTIC MATERIALS |
| DE19514487A1 (en) * | 1994-12-01 | 1996-06-05 | Schoettli Ag | Radiator for a nozzle holder |
| DE69619362T2 (en) * | 1996-05-10 | 2002-07-11 | EUROTOOL BEHEER B.V., GROVENDEEL/'S-GRAVENDEEL | Injection molding system and heating assembly for use in such a system |
| DE102009038316A1 (en) | 2009-08-21 | 2011-02-24 | Thyssenkrupp Presta Ag | Method for producing a steering spindle part forming a section of a steering spindle |
| JP6002171B2 (en) * | 2014-04-17 | 2016-10-05 | 日精樹脂工業株式会社 | Injection machine and nozzle screwing method |
| JP6759176B2 (en) * | 2017-10-31 | 2020-09-23 | Ｔｏｗａ株式会社 | Nozzle, resin molding equipment, manufacturing method of resin molded products |
-
1989
- 1989-12-05 JP JP31719889A patent/JPH03176113A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107297875A (en) * | 2016-04-14 | 2017-10-27 | 发那科株式会社 | Injection machine with temperature adjustment sleeve pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03176113A (en) | 1991-07-31 |
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