Apparatus for controlling a heating temperature

• US 5,272,644 A
• Filed: 11/14/1990
• Issued: 12/21/1993
• Est. Priority Date: 11/24/1989
• Status: Expired due to Term

• Current Assignee: Toshiba Kikai Kabushiki Kaisha
• Original Assignee: Toshiba Kikai Kabushiki Kaisha
• Inventors: Fujie, Hideo, Tomikawa, Kazuto, Katsumata, Hirofumi, Nagakura, Yasuhiko
• Primary Examiner(s): Smith, Jerry
• Assistant Examiner(s): Garland, Steven R.
• Application Number:
  US07/612,436
• Time in Patent Office: 1,133 Days
• Field of Search: 364/557, 364/473, 364/476, 364/477, 264/40.6, 264/40.7, 425/143, 425/144
• US Class Current: 700/207
• CPC Class Codes: B29B 7/823 Temperature control
• CPC Class Codes: B29B 7/826 Apparatus therefor
• CPC Class Codes: B29C 2948/92704 Temperature
• CPC Class Codes: B29C 2948/9279 Errors or malfunctioning, e.g. for quality control
• CPC Class Codes: B29C 2948/92895 Barrel or housing
• CPC Class Codes: B29C 45/78 of temperature
• CPC Class Codes: B29C 48/03 characterised by the shape of the extruded material at extrusion
• CPC Class Codes: B29C 48/832 Heating
• CPC Class Codes: B29C 48/92 Measuring, controlling or regulating
• CPC Class Codes: G05D 23/1917 using digital means

Abstract

An apparatus for controlling a heating temperature, especially for heating a resin in a injection mold machine, a extruder and the like, includes a control device for controlling a heating means and the state of a heated barrel and a condition compensating device for issuing a compensation input to the heaters respectively in response to a reset of the control device, depending on the kinds of resin materials and molding conditions so as to prevent insufficient moldability in the injection mold machine and a deterioration of resin.

Claims

1. A temperature controller for controlling the heating of an object, comprising:

control means for controlling a heater, the control means capable of issuing a temperature reset command indicative of a desired temperature change;

a resetting detector for detecting the reset command;

a compensatory data memory for storing control data; and

a compensation processor for deriving a heating control signal corresponding to the desired temperature change in accordance with the control data from the compensatory data memory; and

a compensation input generator for issuing the heating control signal to the heater in response to the reset command to effect the desired temperature change.

2. The controller of claim 1, wherein the compensatory data memory is a data table.

3. The controller of claim 1, wherein the reset command is also indicative of an operation state of the object to be heated.

4. The controller of claim 1, wherein the object to be heated is a resin.

5. The controller of claim 1, wherein the heating control signal is a step function.

6. A temperature controller for controlling the heating of an object, comprising:

control means for controlling a heater, the control means capable of issuing a reset command indicative of a desired temperature change;

a resetting detector for detecting the reset command; and

a compensation input generator for generating a control signal and issuing the control signal to the heater to effect the desired temperature change in response to the reset command, the compensation input generator storing predetermined control signal parameters corresponding to a plurality of predetermined desired temperature change.

7. The controller of claim 6, wherein the object to be heated is a resin.

8. The controller of claim 6, wherein the control signal is a step function.