JPH042419B2 - - Google Patents
Info
- Publication number
- JPH042419B2 JPH042419B2 JP7506886A JP7506886A JPH042419B2 JP H042419 B2 JPH042419 B2 JP H042419B2 JP 7506886 A JP7506886 A JP 7506886A JP 7506886 A JP7506886 A JP 7506886A JP H042419 B2 JPH042419 B2 JP H042419B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- temperature controller
- overheating
- energization rate
- heater
- 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
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000001746 injection moulding Methods 0.000 claims description 3
- 238000013021 overheating Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002123 temporal effect 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/766—Measuring, controlling or regulating the setting or resetting of moulding conditions, e.g. before starting a cycle
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】
＜発明の属する技術分野＞
本発明は射出成形機等の加熱シリンダの温度制
御を行う温度調節計（以下単に温調計という）に
係り、特に加熱シリンダの過温やヒータの過熱に
よる破損が防止出来る通電率を表示することの出
来る温調計に関する。[Detailed description of the invention] <Technical field to which the invention pertains> The present invention relates to a temperature controller (hereinafter simply referred to as a temperature controller) that controls the temperature of a heating cylinder of an injection molding machine, etc. The present invention relates to a temperature controller capable of displaying the energization rate that can prevent damage to the heater due to overheating.
＜従来技術とその欠点＞
従来から温調計は加熱シリンダ等の温度制御に
用いられているが、最近、温度制御に関係する、
例へばヒータの過温による破損防止や加熱シリン
ダ等の過温防止機能等を備えた多機能な温調計と
することが行われている。<Prior art and its drawbacks> Temperature controllers have traditionally been used to control the temperature of heating cylinders, etc., but recently, temperature controllers related to temperature control,
For example, multi-functional temperature controllers are being developed that have functions to prevent heaters from being damaged due to overheating and to prevent overheating of heating cylinders and the like.
ヒータの過温による破損防止は熱電対の断線を
検知することにより防止出来るが、熱電対が適切
に温度検知個所に挿し込まれていない場合には、
断線ではないため、従来のヒータ破損防止では検
知することが出来ず、ヒータは、終局的にはヒー
タが切れてしまうまでON状態が続いてしまいヒ
ータの破損防止は出来なかつた。また、加熱シリ
ンダ等の過温防止も、温調計の針が設定値まで達
し、ON−OFF制御しているか否かを機械操作者
等が見ない限り分らなかつた。 Damage to the heater due to overheating can be prevented by detecting disconnection of the thermocouple, but if the thermocouple is not properly inserted into the temperature sensing point,
Since it was not a disconnection, it could not be detected by conventional heater damage prevention methods, and the heater remained on until it eventually went out, making it impossible to prevent heater damage. In addition, to prevent overheating of the heating cylinder, etc., it was not possible to tell unless the machine operator or the like saw whether the temperature controller's needle had reached the set value and whether ON-OFF control was being performed.
＜発明の目的＞
本発明は前述のような欠点を取除き、ヒータの
温調制御に関係するヒータの過熱による破損、な
らびに加熱シリンダ等の過熱防止機能を温度計に
持たせ、温度制御とともに前述のヒータ過熱防止
等が同時に出来るようにすることを目的とする。<Object of the Invention> The present invention eliminates the above-mentioned drawbacks, and provides a thermometer with a function to prevent damage caused by overheating of the heater related to temperature control of the heater, as well as overheating of the heating cylinder, etc. The purpose is to simultaneously prevent overheating of the heater.
＜発明の概要＞
前述の目的を達成するため、射出成形機等の加
熱シリンダの温度制御を行う温調計に通電率を演
算し、演算結果を表示する手段を設けたことを特
徴とする温調計とした。また前記演算結果が任意
に設定出来る通電許容値の範囲を設定可能とし、
その許容範囲をはずれたとき、警報を発するよう
にした温調計とした。<Summary of the Invention> In order to achieve the above-mentioned object, there is provided a temperature controller which is characterized in that a temperature controller for controlling the temperature of a heating cylinder of an injection molding machine is provided with means for calculating the energization rate and displaying the calculation result. It was used as a meter. In addition, the calculation result can set the range of the energization tolerance value arbitrarily,
The temperature controller was designed to issue an alarm when the temperature exceeds the allowable range.
＜実施例＞
第１図により時間的な温度変化状態と、通電状
態の関係を示すグラフを説明すると、温度が設定
温度Tsに達するまでの通電状態は一定時間ｔに
対し通電時間Snとすると、Sn／ｔはに近く、100
〜80％程度通電しているが、温度が設定温度Ts
に達すると、今度は温度Tsを維持するだけでよ
く、Sn／ｔは0.5〜0.6程度、即ち50〜60％の通電
率となることを示している。<Example> To explain the graph showing the relationship between the temporal temperature change state and the energization state with reference to FIG. 1, the energization state until the temperature reaches the set temperature Ts is the energization time Sn for a certain time t. Sn/t is close to 100
Approximately 80% of power is on, but the temperature is below the set temperature Ts
When the temperature Ts is reached, it is sufficient to maintain the temperature Ts, and Sn/t becomes approximately 0.5 to 0.6, that is, the conduction rate becomes 50 to 60%.
従つて、通電率を演算するためには、一定時間
nt内に実際の通電時はS1＋S2＋S3＋……＋Sn＝
ΣSnとなり
通電率はΣSn／nt×100％となる。 Therefore, in order to calculate the energization rate, it is necessary to
When the current is actually applied within nt, S 1 + S 2 + S 3 +……+Sn=
ΣSn, and the conduction rate is ΣSn/nt×100%.
＜効果＞
以上のように通電率が演算され、予め定めた許
容通電率を前記演算結果が越えた場合は、警報を
発するようにすれば、作業者が温調計を都度監視
する必要もなく、また従来装置と比較し、応答が
早く加熱シリンダ等の過熱防止、ヒータの過熱に
よる破損の防止が出来る。更に、種々の材料によ
る異なる材料の特性を取らえるための加熱シリン
ダから受ける熱容量の把握が出来る。<Effect> The energization rate is calculated as described above, and if the calculation result exceeds the predetermined allowable energization rate, an alarm is issued, eliminating the need for the worker to monitor the temperature controller every time. Also, compared to conventional devices, the response is faster, preventing overheating of the heating cylinder, etc., and preventing damage to the heater due to overheating. Furthermore, it is possible to grasp the heat capacity received from the heating cylinder in order to obtain the characteristics of different materials due to various materials.
第１図は本発明における時間の経過と温度変化
状態、ならびに通電時間の様子を示したグラフ。
FIG. 1 is a graph showing the passage of time, temperature changes, and current application time in the present invention.
Claims (1)
う温度調節計に、通電率を演算し、この演算結果
を表示する手段を設けたことを特許とする温度調
節計。 ２ 前記の通電率に対し、任意の許容範囲を設定
可能である特許請求範囲第１項記載の温度調節
計。 ３ 前記演算結果が任意に設定出来る通電率の許
容範囲をはずれたとき、警報を発するようにした
ことを特徴とする前記特許請求範囲第２項記載の
温度調節計。[Scope of Claims] 1. A temperature controller that is patented in that the temperature controller that controls the temperature of a heating cylinder of an injection molding machine or the like is provided with means for calculating the energization rate and displaying the result of this calculation. 2. The temperature controller according to claim 1, wherein an arbitrary allowable range can be set for the energization rate. 3. The temperature controller according to claim 2, wherein an alarm is issued when the calculation result falls outside of a permissible range of energization rate that can be set arbitrarily.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7506886A JPS62231717A (en) | 1986-04-01 | 1986-04-01 | Temperature control meter |
| DE19873710605 DE3710605A1 (en) | 1986-04-01 | 1987-03-31 | CONTROL SYSTEM FOR AN INJECTION MOLDING MACHINE |
| DE3744804A DE3744804C2 (en) | 1986-04-01 | 1987-03-31 | |
| US07/032,787 US4802097A (en) | 1986-04-01 | 1987-03-31 | Control systems of injection molding machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7506886A JPS62231717A (en) | 1986-04-01 | 1986-04-01 | Temperature control meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62231717A JPS62231717A (en) | 1987-10-12 |
| JPH042419B2 true JPH042419B2 (en) | 1992-01-17 |
Family
ID=13565509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7506886A Granted JPS62231717A (en) | 1986-04-01 | 1986-04-01 | Temperature control meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62231717A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5996579B2 (en) * | 2014-06-09 | 2016-09-21 | 株式会社日本製鋼所 | Heater disconnection / deterioration judgment method and injection molding machine |
-
1986
- 1986-04-01 JP JP7506886A patent/JPS62231717A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62231717A (en) | 1987-10-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |