JPH021836Y2 - - Google Patents
Info
- Publication number
- JPH021836Y2 JPH021836Y2 JP1983049213U JP4921383U JPH021836Y2 JP H021836 Y2 JPH021836 Y2 JP H021836Y2 JP 1983049213 U JP1983049213 U JP 1983049213U JP 4921383 U JP4921383 U JP 4921383U JP H021836 Y2 JPH021836 Y2 JP H021836Y2
- Authority
- JP
- Japan
- Prior art keywords
- current
- plate
- carrying
- mica
- nichrome wire
- 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
- 229910001120 nichrome Inorganic materials 0.000 claims description 31
- 239000010445 mica Substances 0.000 claims description 25
- 229910052618 mica group Inorganic materials 0.000 claims description 25
- 238000003466 welding Methods 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/83—Heating or cooling the cylinders
- B29C48/832—Heating
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Surface Heating Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
本考案は、合成樹脂の押出成形機における押出
シリンダーなどの被加熱体を加熱するヒーターに
関するものである。[Detailed Description of the Invention] The present invention relates to a heater for heating an object to be heated such as an extrusion cylinder in a synthetic resin extrusion molding machine.
従来のこの種ヒーターには、第１図及び第２図
示のように一対のマイカ板１，２にニクロム線
３，４を巻き付け、マイカ板１，２の各切欠部
５，６の間と７，８の間に介在させた小形のマイ
カ板９，１０に取付けられている通電端子１１，
１２にニクロム線３，４の各端部を接続したヒー
ターが多数使用されている。 In a conventional heater of this type, nichrome wires 3 and 4 are wound around a pair of mica plates 1 and 2, as shown in FIGS. , 8 are electrically conductive terminals 11 attached to small mica plates 9, 10 interposed between them.
Many heaters are used in which each end of nichrome wires 3 and 4 are connected to 12.
このヒーターにおいては、各通電端子１１，１
２をニクロム線３，４の各端部に接触させた状態
でマイカ板９，１０に取付ける手段として、マイ
カ板が溶接に向かないため、各通電端子１１，１
２の端部をマイカ板９，１０にかしめることによ
り取付ける手段が採用されているが、各通電端子
１１，１２のかしめ部１３は、ニクロム線３，４
の発熱により熱膨脹してゆるみやすく、それが原
因となつて各通電端子１１，１２とニクロム線
３，４との電気的接触の不良や、ニクロム線３，
４の断線を起しやすいという欠点がある。 In this heater, each energizing terminal 11, 1
2 to the mica plates 9, 10 in contact with each end of the nichrome wires 3, 4. Since mica plates are not suitable for welding, each current-carrying terminal 11, 1
2 is attached by caulking the ends of the nichrome wires 3, 4 to the mica plates 9, 10.
Due to the heat generated by the nichrome wires, they expand thermally and become loose, which may cause poor electrical contact between the current-carrying terminals 11, 12 and the nichrome wires 3, 4, or the nichrome wires 3, 4.
It has the disadvantage that wire breakage is likely to occur.
また上記ヒーターの代わりに、ニクロム線の各
端部を通電端子に設けられた孔に通し、ナツトで
締めつけるようにしたヒーターも使用されている
けれども、このヒーターにおいても、ニクロム線
の発熱によりナツトが熱膨脹して、締めつけがゆ
るみやすく、前記のヒーターと同様の欠点があ
る。 Also, instead of the above heater, a heater is used in which each end of a nichrome wire is passed through a hole provided in a current-carrying terminal and tightened with a nut. It has the same drawback as the heater described above, as it tends to become loose due to thermal expansion.
本考案は、上記従来の欠点を解消しうるヒータ
ーを提供しようとするものである。 The present invention aims to provide a heater that can overcome the above-mentioned conventional drawbacks.
以下図面第３図ないし第５図にもとずいて本考
案の一実施例を説明すると、１４，１５は一対の
マイカ板、１６，１７はマイカ板１４，１５に巻
き付けたニクロム線、１８，１９はマイカ板１４
の板面の両端部においてニクロム線１６の両端部
をそれぞれ取り囲むように切欠した切欠部、２
０，２１はマイカ板１５の板面の両端部において
ニクロム線１７の両端部をそれぞれ取り囲むよう
に切欠した切欠部２２はマイカ板１４，１５の一
方の端部間に掛け渡した通電板で、それらの両端
部２３，２４を切欠部１８，２０へ挿入し、切欠
部１８，２０の範囲内においてニクロム線１６，
１７の各一端２５，２６を両端部２３，２４にス
ポツト溶接などにより溶接してある。２７は通電
板２２の中央部分に予め取付けられた通電端子
で、その下端部を通電板２２にかしめるととも
に、そのかしめ部を溶接してある。２８はマイカ
板１４，１５の他方の端部に掛け渡した通電板
で、それらの両端部２９，３０を切欠部１９，２
１へ挿入し、切欠部１９，２１の範囲内において
ニクロム線１６，１７の各他端３１，３２を両端
部２９，３０にスポツト溶接などにより溶接して
ある。３３は通電板２８の中央部分に予め取付け
られた通電端子で、その下端部を通電板２８にか
しめるとともにそのかしめ部を溶接してある。 An embodiment of the present invention will be described below with reference to FIGS. 3 to 5. Reference numerals 14 and 15 are a pair of mica plates, 16 and 17 are nichrome wires wound around the mica plates 14 and 15, 18, 19 is mica board 14
cutout portions 2 each surrounding both ends of the nichrome wire 16 at both ends of the plate surface;
0 and 21 are notches 22 which are cut out at both ends of the plate surface of the mica plate 15 so as to surround both ends of the nichrome wire 17, respectively, and are current-carrying plates that are stretched between one end of the mica plates 14 and 15. Insert the ends 23 and 24 into the notches 18 and 20, and place the nichrome wire 16 and
One end 25, 26 of 17 is welded to both ends 23, 24 by spot welding or the like. Reference numeral 27 denotes a current-carrying terminal that is attached in advance to the center of the current-carrying plate 22, the lower end of which is caulked to the current-carrying plate 22, and the caulked portion is welded. Reference numeral 28 denotes a current-carrying plate that spans the other ends of the mica plates 14 and 15, and connects both ends 29 and 30 to the notches 19 and 2.
1, and the other ends 31, 32 of the nichrome wires 16, 17 are welded to both ends 29, 30 by spot welding or the like within the range of the notches 19, 21. Reference numeral 33 denotes a current-carrying terminal that is attached in advance to the center of the current-carrying plate 28, and its lower end is caulked to the current-carrying plate 28 and the caulked portion is welded.
次に、第６図にもとずいて本考案の別の実施例
を説明すると、３４は一枚のマイカ板、３５はマ
イカ板３４に巻き付けたニクロム線、３６，３７
はマイカ板３４の板面の両端部においてニクロム
線３５の両端部３８，３９をそれぞれ取り囲むよ
うに切欠した切欠部、４０，４１は切欠部３６，
３７とそれぞれ一対をなすように設けた切欠部、
４２は通電板で、それらの両端部４３，４４を切
欠部３６，４０へ挿入し、切欠部３６の範囲内に
おいてニクロム線３５の一端３８を端部４３にス
ポツト溶接などにより溶接してある。４５は通電
板で、それらの両端部４６，４７を切欠部３７，
４１へ挿入し、切欠部３７の範囲内においてニク
ロム線３５の他端３９を端部４６にスポツト溶接
などにより溶接してある。４８，４９は通電板４
２，４５の中央部に予め取付けられた通電端子で
ある。なお、この実施例における通電端子４８，
４９の下端をマイカ板３４にかしめることにより
通電端子４８，４９を固定し、切欠部４０，４１
及びこれらに挿入する端部４４，４７を省くこと
もある。 Next, another embodiment of the present invention will be described based on FIG. 6. 34 is a mica plate, 35 is a nichrome wire wound around the mica plate 34,
40 and 41 are notches cut out at both ends of the plate surface of the mica plate 34 so as to surround both ends 38 and 39 of the nichrome wire 35, respectively;
37, and a notch provided in a pair, respectively.
Reference numeral 42 designates a current-carrying plate whose both ends 43 and 44 are inserted into notches 36 and 40, and within the notch 36 one end 38 of a nichrome wire 35 is welded to the end 43 by spot welding or the like. 45 is a current-carrying plate, and both ends 46 and 47 thereof are connected to notches 37,
41, and the other end 39 of the nichrome wire 35 is welded to the end 46 within the range of the notch 37 by spot welding or the like. 48 and 49 are current-carrying plates 4
2, 45 is a current-carrying terminal attached in advance to the center part. Note that the current-carrying terminal 48 in this embodiment,
By caulking the lower ends of 49 to the mica plate 34, the current-carrying terminals 48, 49 are fixed, and the notches 40, 41 are fixed.
And the ends 44, 47 inserted therein may be omitted.
上記各実施例に示したヒーターは、熱を伝えや
すい材質で平板状、円弧状、コの字形状その他被
加熱体に接触させる形状に成形されたケーシング
に内蔵させて使用するものである。 The heaters shown in each of the above embodiments are used by being built into a casing made of a material that easily conducts heat and shaped into a flat, arcuate, U-shaped, or other shape for contacting the object to be heated.
本考案は、叙上のようにニクロム線を巻き付け
たマイカ板の板面においてニクロム線の端部を取
り囲むように切欠した切欠部を設け、この切欠部
に通電板の端部を挿入し、切欠部の範囲内におい
てニクロム線の端部を通電板に溶接し、通電板に
通電端子を設けるようにしたから、通電板とニク
ロム線との接続部分が熱膨脹によつてゆるむよう
なことはなく、したがつて電気的接触の不良や、
ニクロム線の断線を起すようなことはない。ま
た、マイカ板に設けた切欠部の範囲内でニクロム
線の端部を通電板に溶接するようにしたから、マ
イカ板が溶接の邪摩をするようなことはないし、
溶接時に発生する溶接熱がマイカ板に直接加わら
ず、マイカ板をこがさなくて済み、したがつてマ
イカ板の強度を低下させなくて済む。また各通電
板の両端をマイカ板に設けた切欠部へ挿入したか
ら、各通電板の取付位置が一定し、したがつて各
通電板に取付けられる通電端子の間隔を正確に保
持できる利点を有する。 In the present invention, as described above, a notch is provided in the plate surface of a mica plate wrapped with a nichrome wire so as to surround the end of the nichrome wire, and the end of the current-carrying plate is inserted into this notch. Since the end of the nichrome wire is welded to the current-carrying plate and a current-carrying terminal is provided on the current-carrying plate, the connection between the current-carrying plate and the nichrome wire will not loosen due to thermal expansion. Therefore, poor electrical contact,
There is no chance of breaking the nichrome wire. Also, since the end of the nichrome wire is welded to the current carrying plate within the notch provided in the mica plate, the mica plate will not interfere with welding.
The welding heat generated during welding is not directly applied to the mica plate, so there is no need to burn the mica plate, and therefore there is no need to reduce the strength of the mica plate. In addition, since both ends of each current-carrying plate are inserted into the notches provided in the mica plate, the mounting position of each current-carrying plate is fixed, which has the advantage that the spacing between the current-carrying terminals attached to each current-carrying plate can be maintained accurately. .
第１図は従来品の一例を一部切除して示す図、
第２図は第１図の要部の拡大断面図、第３図は本
考案の一実施例を一部切除して示す図、第４図は
第３図の裏側を示す図、第５図は第３図の要部の
拡大断面図、第６図は本考案の別の例を一部切欠
して示す図である。
１４，１５……マイカ板、１６，１７……ニク
ロム線、１８，１９……切欠部、２０，２１……
切欠部、２２……通電板、２３，２４……通電板
の両端部、２５，２６……ニクロム線、１６，１
７の各一端、２７……通電端子、２８……通電
板、２９，３０……通電板の両端部、３１，３２
……ニクロム線、１６，１７の各他端、３３……
通電端子、３４……マイカ板、３５……ニクロム
線、３６，３７……切欠部、３８，３９……ニク
ロム線３５の端部、４２……通電板、４３……通
電板４２の端部、４５……通電板、４６……通電
板４５の端部、４８，４９……通電端子。
Figure 1 is a partially cutaway diagram of an example of a conventional product.
Fig. 2 is an enlarged sectional view of the main part of Fig. 1, Fig. 3 is a partially cutaway view of an embodiment of the present invention, Fig. 4 is a view showing the back side of Fig. 3, Fig. 5 3 is an enlarged sectional view of the main part of FIG. 3, and FIG. 6 is a partially cutaway view of another example of the present invention. 14, 15... Mica plate, 16, 17... Nichrome wire, 18, 19... Notch, 20, 21...
Notch, 22... Current carrying plate, 23, 24... Both ends of current carrying plate, 25, 26... Nichrome wire, 16, 1
One end of each of 7, 27... current carrying terminal, 28... current carrying plate, 29, 30... both ends of current carrying plate, 31, 32
...Nichrome wire, each other end of 16 and 17, 33...
Current-carrying terminal, 34... mica plate, 35... nichrome wire, 36, 37... notch, 38, 39... end of nichrome wire 35, 42... current-carrying plate, 43... end of current-carrying plate 42 , 45... energizing plate, 46... end of energizing plate 45, 48, 49... energizing terminal.
Claims (1)
てニクロム線の端部を取り囲むように切欠した切
欠部を設け、この切欠部に通電板の端部を挿入
し、上記切欠部の範囲内においてニクロム線の端
部を通電板に溶接し、上記通電板に通電端子を設
けてなるヒーター。 A notch is provided on the plate surface of the mica plate around which the nichrome wire is wound so as to surround the end of the nichrome wire, and the end of the current-carrying plate is inserted into this notch, and the nichrome wire is inserted within the range of the above notch. A heater whose end portion is welded to a current-carrying plate, and a current-carrying terminal is provided on the current-carrying plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983049213U JPS59155117U (en) | 1983-04-01 | 1983-04-01 | heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983049213U JPS59155117U (en) | 1983-04-01 | 1983-04-01 | heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59155117U JPS59155117U (en) | 1984-10-18 |
| JPH021836Y2 true JPH021836Y2 (en) | 1990-01-17 |
Family
ID=30179726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983049213U Granted JPS59155117U (en) | 1983-04-01 | 1983-04-01 | heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59155117U (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS615742Y2 (en) * | 1978-02-22 | 1986-02-21 |
-
1983
- 1983-04-01 JP JP1983049213U patent/JPS59155117U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59155117U (en) | 1984-10-18 |
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