CN109249461B - Automatic cleaning system for thermal cutter for cutting detonating cord - Google Patents

Automatic cleaning system for thermal cutter for cutting detonating cord Download PDF

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Publication number
CN109249461B
CN109249461B CN201811246928.2A CN201811246928A CN109249461B CN 109249461 B CN109249461 B CN 109249461B CN 201811246928 A CN201811246928 A CN 201811246928A CN 109249461 B CN109249461 B CN 109249461B
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China
Prior art keywords
temperature
black spot
main controller
hot
signal
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CN109249461A (en
Inventor
魏善碧
周翼
吴金腾
周建雄
卢华庆
简天乐
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Chongqing University
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Chongqing University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/088—Means for treating work or cutting member to facilitate cutting by cleaning or lubricating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/10—Means for treating work or cutting member to facilitate cutting by heating
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor

Abstract

The invention relates to an automatic cleaning system for a thermal cutter for cutting an explosion wire, which comprises a main controller, a gasification attachment removing module, a black spot detection device and an air draft device, wherein the main controller is connected with the gasification attachment removing module; the gasified attachment removing module comprises a temperature controller, a thermal resistor, a hot-melting blade and a temperature sensor; black spot detection device connects main control unit, black spot detection device detects the black spot area that the attachment formed on the hot melt blade, and give main control unit with black spot area signal transmission who detects, set value in the main control unit, when the black spot area signal that main control unit received reached the set value, main control unit gave temperature controller restraint condition, control thermal resistance heating hot melt sword, make the attachment gasification, accomplish the cleanness in the shortest time, treat that black spot area is 0 after, main control unit control opens updraft ventilator, realize quick and safe self-cleaning. The invention has the advantages of high cleaning speed, good effect, high efficiency and safe and reliable operation.

Description

Automatic cleaning system for thermal cutter for cutting detonating cord
The invention belongs to the field of aerospace initiating explosive device production, and particularly relates to an automatic cleaning system for a thermal cutter for cutting an explosion wire.
Background
The detonating cord is a linear initiating explosive with certain flexibility and has irreplaceable effect in national defense and military construction projects. The processing of the detonating cord mainly comprises the steps of cutting, coating layer separation, compression joint and the like, wherein when cutting, the direct mechanical cutting can cause the braided layer on the cutting surface of the detonating cord to be scattered, and the subsequent end coating layer removing process is influenced, so the method of firstly heating to fuse the coating layer of the detonating cord and then mechanically cutting along the cutting part of the detonating cord is adopted. However, when the detonating cord coating layer is fused by heating, the coating layer material can be attached to the hot-melting knife, and black spots can appear on the hot-melting knife after a period of time, so that the processing process is influenced. The current cleaning method is a method for removing attachments by workers using a razor, and the method is relatively original and has some problems:
(1) the method for removing the attachments on the attachment hot melting knife by using the razor by workers wastes manpower and material resources, wastes time, reduces the production efficiency of the whole processing link, and has certain potential safety hazards.
(2) The workman uses the razor to get rid of the attachment on the attachment hot melt sword, causes the damage to hot melt sword surface easily, influences its life-span, also can cause the influence to the control of temperature, and then influences normal production and processing.
In order to solve the problems, a quick and safe method is urgently needed to be found, so that the hot melting knife can be automatically cleaned, and the cleaning efficiency and the cleaning effect are improved.
Disclosure of Invention
In view of this, the invention aims to provide an automatic cleaning system for a thermal cutting tool of a detonating cord with high automation degree, high reliability and high efficiency, which overcomes the defects in the prior art and reduces the labor input.
The invention provides the following technical scheme: an automatic cleaning system for a thermal cutter for cutting a detonating cord comprises a main controller, a gasification attachment removing module, a black spot detection device and an air draft device; the gasification attachment removing module comprises two temperature controllers, a thermal resistor, a hot-melting knife and two temperature sensors, wherein the temperature controllers are connected with the main controller, the thermal resistor is connected with the temperature controllers, the hot-melting knife is connected with the thermal resistor, and the temperature sensors are connected with the hot-melting knife; the black spot detection device is connected with the main controller, detects the area of a black spot formed by attachments on the surface of the hot-melting knife, transmits a detected black spot area signal to the main controller, sets a set value in the main controller, and outputs an execution command to control the gasified attachment removal module to complete cleaning when the main controller receives the black spot area signal reaching the set value; the air draft device is connected with the main controller.
Further, the black spot detection device transmits three signals of a, b and c according to the size of the black spot formed by the detected attachment, wherein the signal a indicates that the area of the black spot is smaller than a set value S, the signal b indicates that the area of the black spot is larger than the set value S, and the signal c indicates that the areas of the black spots of the two hot melting knives are both 0.
Further, when the main controller receives the signal a, the main controller outputs an execution command A, the gasification and attachment removal module does not enter the cleaning mode when receiving the execution command A, and the execution command A sets the temperature of the temperature controller to be the normal temperature T of the melting braid layer1。
Further, when the main controller receives the signal B, an execution command B is output, the gasification deposit removal module enters a cleaning mode, the two temperature controllers respectively control the thermocouple in the closed loop circuit to heat, and the hot electric melting cutter is indirectly heated to the deposit gasification temperature TmSo as to gasify the surface attachments and further achieve the purpose of cleaning.
Further, the temperature T of vaporization of the depositmNot a fixed value, but any temperature value which can gasify the surface attachment of the hot melting knife, wherein the temperature value is lower than the ignition temperature T of the surface attachment of the hot melting knifef。
Further, when the main controller receives the signal B and outputs an execution command B, the execution command B does not give a specific set value to the temperature sensor, does not make specific requirements on a tracking curve of the temperature sensor, and only gives constraint conditions, namely shortest cleaning time and safety limit, to the temperature sensor, wherein the safety limit is Tm＜TfAnd the specific temperature is optimized and processed according to the working condition when the PID parameters are set by the temperature controller.
Further, when the main controller receives the signal C, the main controller indicates that attachments on the two hot knives are completely removed, the main controller outputs an execution command C to open the air draft device, the attachments gasified from the hot melting knives are absorbed, and meanwhile, the given temperature is output to be the temperature T of the normal melting weaving layer1。
The invention has the beneficial effects that:
1. the automatic cleaning system for the thermal cutter for cutting the detonating cord can enter a cleaning mode through self-checking, manual switching is not needed, and the operation efficiency is high.
2. The automatic cleaning system for the detonating cord cutting hot cutter adopts a heating, gasifying and air exhausting mode when cleaning, is an automatic cleaning mode, omits manual links such as dismantling, removing attachments and the like, reduces the investment of manpower and material resources, improves the cleaning efficiency and effect, further improves the production efficiency and reduces the mechanical damage to equipment.
3. The temperature controller does not give a specific temperature value in the automatic heating and cleaning process, and does not make specific requirements on a tracking curve, so that the cleaning work can be completed in the shortest time under the condition of ensuring safety, and the cleaning efficiency and the cleaning effect are further improved.
Other advantages, objects, and features of the invention will be apparent to those skilled in the art or may be learned from practice of the invention. It should be noted that the technical means disclosed in the present invention are not limited to the technical means disclosed in the above embodiments, and include technical means formed by any combination of the above technical features.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
FIG. 1 is a schematic view of the automatic cleaning system for thermal cutting tools for detonating cord cutting according to the present invention.
FIG. 2 is a flow chart of the operation of the automatic cleaning system for thermal cutting tools for detonating cord cutting of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the operation of an automatic cleaning system for an explosive fuse cutting hot tool, which comprises a main controller 1, a temperature controller I2, a thermal resistor I3, a hot-melting tool I4, a temperature sensor I5, a temperature controller II 6, a thermal resistor II 7, a hot-melting tool II 8, a temperature sensor II 9, a black spot detection device 10 and an air draft device 11, wherein the temperature controller I and the temperature controller II are connected with the main controller, the thermal resistor I is connected with the temperature controller I, the hot-melting tool I is connected with the thermal resistor I, the temperature sensor I is connected with the hot-melting tool I, the thermal resistor II is connected with the temperature controller II, the hot-melting tool II is connected with the thermal resistor II, and the temperature sensor II is connected with the hot-melting tool II; the black spot detection device is connected with the main controller, detects the area of a black spot formed by attachments on the surface of the hot-melting knife and transmits a detected black spot area signal to the main controller, a set value is arranged in the main controller, and when the main controller receives the black spot area signal reaching the set value, the main controller outputs an execution command to control the gasified attachment removal module to complete cleaning; the air draft device is connected with the main controller.
Fig. 2 is a flow chart of the work of the automatic cleaning system for the thermal cutter for cutting the detonating cord of the invention, when the automatic cleaning system works, the black spot detection device transmits three signals of a, b and c according to the size of the black spot formed by the detected attachments, wherein the signal a shows that the area of the black spot is smaller than a set value S, the signal b shows that the area of the black spot is larger than the set value S, and the signal c shows that the areas of the black spots formed by the attachments on the two thermal cutters I and II are both 0.
The black spot detection device transmits two signals, namely a signal a, a signal b and a signal c, of the size of a black spot formed by the detected attachment, wherein the signal a indicates that the area of the black spot is smaller than a set value S, the signal b indicates that the area of the black spot is larger than the set value S, and the signal c indicates that the areas of the black spots formed by the attachment on the hot-melting knife I and the attachment on the hot-melting knife II are both 0.
When the main controller receives the signal a, the main controller outputs an execution command A, the gasification and attachment removal module does not enter a cleaning mode when receiving the execution command A, and the execution command A sets the temperature of the temperature controller to be the normal temperature T of the melting braid layer1。
When the main controller receives a letter B, an execution command B is output, the gasified attachment removing module enters a cleaning mode, the execution command B does not give a specific set value to the temperature controller I and the temperature controller II, and does not make specific requirements on a tracking curve of the temperature controller I and the temperature controller II, only constraint conditions are given to the temperature controller I and the temperature controller II, the constraint conditions are that the cleaning time is shortest and the safety limit is safe, the specific temperature is optimized and processed according to working conditions when the PID parameters are set by the temperature controller, the temperature controller I and the temperature controller II respectively control the heating of the thermocouple I and the thermocouple II, and the temperature of the hot melting knife I and the temperature of the hot melting knife II indirectly reach the attachment gasification temperature Tm，TmNot a fixed value, butAny temperature value capable of gasifying the attachments on the surface of the hot melting knife, which is lower than the ignition temperature T of the attachments on the surface of the hot melting knifefSo as to gasify the surface attachments and further achieve the purpose of cleaning.
The black spot detection device continuously detects the area of the black spots on the hot-melting knife, when the main controller receives the signal C, the main controller indicates that attachments on the two hot-melting knives are completely removed, the main controller outputs an execution command C to open the air draft device, the attachments gasified from the hot-melting knife are absorbed, and meanwhile, the given temperature is output to be the temperature T of the normally-melted weaving layer1And the whole cleaning process is finished.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail by the above embodiments, it will be apparent to those skilled in the art that several modifications and amendments can be made without departing from the principle of the present invention.

Claims (4)

1. An automatic cleaning system for a thermal cutter for cutting a detonating cord is characterized by comprising a main controller, a gasification attachment removing module, a black spot detection device and an air draft device; the gasification attachment removing module comprises two temperature controllers, a thermal resistor, a hot-melting knife and two temperature sensors, wherein the temperature controllers are connected with the main controller, the thermal resistor is connected with the temperature controllers, the hot-melting knife is connected with the thermal resistor, and the temperature sensors are connected with the hot-melting knife; the black spot detection device is connected with the main controller, detects the area of a black spot formed by attachments on the surface of the hot-melting knife, transmits a detected black spot area signal to the main controller, sets a set value S in the main controller, and outputs an execution command to control the gasified attachment removal module to finish cleaning when the main controller receives the black spot area signal reaching the set value; the air draft device is connected with the main controller.
2. The automatic cleaning system for the thermal knife for cutting the detonating cord as claimed in claim 1, wherein the black spot detecting device transmits three signals a, b and c indicating the size of the black spot formed by the detected attachments, wherein the signal a indicates that the area of the black spot is smaller than the set value S, the signal b indicates that the area of the black spot is larger than the set value S, and the signal c indicates that the areas of the black spots of the two thermal knives are both 0.
3. The automatic cleaning system for thermal cutting tools of detonating cord as claimed in claim 1, wherein the main controller can switch the control status, when the main controller receives the signal a, it outputs the execution command a, the vaporizing and removing the attachments module does not enter the cleaning mode when receiving the execution command a, the execution command a sets the temperature of the controller to the normal temperature T of the molten braid1(ii) a When the main controller receives the signal B, an execution command B is output, the gasification and attachment removal module enters a cleaning mode, the two temperature controllers respectively control the thermocouple in the closed loop to heat, and the hot electric melting cutter is indirectly heated to the attachment gasification temperature TmThe temperature T of vaporization of the depositmThe temperature is not a fixed value, but any temperature value capable of gasifying the surface attachments of the hot melting knife so as to gasify the surface attachments to achieve the aim of cleaning, and the temperature is lower than the ignition temperature T of the surface attachments of the hot melting knifef(ii) a When the main controller receives the signal C, the main controller indicates that attachments on the two hot knives are completely removed, outputs an execution command C to open the air draft device, absorbs the attachments gasified from the hot melting knives, and outputs the given temperature to be the temperature T of the normal melting weaving layer1。
4. The automatic cleaning system for thermal cutter for detonating cord cutting as claimed in claim 3, wherein when the main controller receives the signal B and outputs the execution command B, said execution command B does not give a specific setting value to the temperature sensor nor make specific requirements for its tracking curve, only gives the temperature sensor constraint conditions, i.e. minimum cleaning time and safety limit, said safety limit is Tm<TfAnd the specific temperature is optimized together when the PID parameters are set by the temperature controller.
CN201811246928.2A 2018-10-25 2018-10-25 Automatic cleaning system for thermal cutter for cutting detonating cord Active CN109249461B (en)

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Application Number Priority Date Filing Date Title
CN201811246928.2A CN109249461B (en) 2018-10-25 2018-10-25 Automatic cleaning system for thermal cutter for cutting detonating cord

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CN109249461B true CN109249461B (en) 2020-05-15

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465627A (en) * 1967-09-20 1969-09-09 Coated Products Inc Polytetrafluoroethylene coated hot cutting die
JPH0386500A (en) * 1989-08-25 1991-04-11 Tokyo Houraishiya:Kk Cleaning method for heat cutter and mechanism thereof
AU641050B2 (en) * 1991-02-06 1993-09-09 Kabushiki Kaisha Tokyo Horaisha Mark cutting apparatus and method controlling same
CN105700584A (en) * 2014-11-26 2016-06-22 中国科学院沈阳自动化研究所 Temperature control circuit and temperature control method for hot knife mechanism
CN106738037A (en) * 2016-12-07 2017-05-31 无锡同心塑料制品有限公司 A kind of plastic foam mechanical processes punch device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465627A (en) * 1967-09-20 1969-09-09 Coated Products Inc Polytetrafluoroethylene coated hot cutting die
JPH0386500A (en) * 1989-08-25 1991-04-11 Tokyo Houraishiya:Kk Cleaning method for heat cutter and mechanism thereof
AU641050B2 (en) * 1991-02-06 1993-09-09 Kabushiki Kaisha Tokyo Horaisha Mark cutting apparatus and method controlling same
CN105700584A (en) * 2014-11-26 2016-06-22 中国科学院沈阳自动化研究所 Temperature control circuit and temperature control method for hot knife mechanism
CN106738037A (en) * 2016-12-07 2017-05-31 无锡同心塑料制品有限公司 A kind of plastic foam mechanical processes punch device

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