CN103631167A - Volume quantitative control system for wood material extrusion process - Google Patents
Volume quantitative control system for wood material extrusion process Download PDFInfo
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- CN103631167A CN103631167A CN201310648604.2A CN201310648604A CN103631167A CN 103631167 A CN103631167 A CN 103631167A CN 201310648604 A CN201310648604 A CN 201310648604A CN 103631167 A CN103631167 A CN 103631167A
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Abstract
A volume quantitative control system for wood material extrusion process comprises a bunker for storing wood chips, a packing tower, a feeding device, a motor, a detector, a comparator and a control unit. A drive current threshold is preset in the comparator, the motor drives the feeding device to operate to convey the wood chips in the bunker to the packing tower, the detector monitors drive currents in the motor in real time and transmits the monitored drive current values to the comparator, and after the drive current values monitored in the comparator are compared with the drive current threshold, the comparator transmits comparison results to the control unit which transmits operation control signals to the motor after receiving comparison signals. In the system, whether or not the packing tower is packed is judged through variation of the driven currents and monitored through the motor, the defect that packing quantity is affected each time due to factors such as different packing density of the wood chips and different texture of material is overcome, so that an error range of the packing quantity each time is narrowed, and quality of formed wood blocks is small in fluctuation.
Description
Technical field
The present invention relates to a kind of wood materials disposal system, particularly a kind of volume quantitative control system of wood materials extrusion process.
Background technology
In traditional wood chip extrusion process, wood chip enters packed tower by the feed bin of screw feeding device self compaction machine.Screw feeding device has screw motor, by set the working time of screw motor control each charging in packed tower number.Yet, when the bulk density of wood chip is different, material is different and the reason such as screw motor response lag and inertia, cause different number of times inlet amounies to change, thereby cause the wooden unit quality fluctuation forming after extruding large and then bring various unnecessary losses.
Summary of the invention
In view of this, be necessary to provide a kind of volume quantitative control system that reduces the wood materials extrusion process of wooden unit quality fluctuation.
A kind of volume quantitative control system of wood materials extrusion process, comprise the feed bin of storing wood chip, packed tower, pay-off, motor, detector, comparer and control module, in described comparer, be preset with a drive current threshold values, thereby described motor drives described pay-off running that the wood chip in feed bin is sent to packed tower, drive current in detector detecting real-time motor, and the signal of the driving current value detecting is sent to comparer, after making the driving current value that detects in comparer and drive current threshold values relatively, then comparer is sent to control module by comparative result, described control module receives the backward motor of described comparison signal and sends working control signal.
In invention, variation by detecting real-time motor drive current judges whether packed tower fills up for accommodating the space of wood chip, overcome because the bulk density of wood chip is different, material is different and the impact of factor on each amount of filler such as screw motor response lag and inertia, thereby make each filler quantitative error scope less, moulding wooden unit quality fluctuation is little.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the volume quantitative control system of wood materials extrusion process of the present invention.
Main element symbol description
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1, the volume quantitative control system of the wood materials extrusion process of preferred embodiment of the present invention comprises the feed bin 10, a packed tower 30 of a storage wood chip, for the wood chip of feed bin 10 being sent to the pay-off 20 in packed tower 30, a motor 40 that drives pay-off 20 runnings, the control module 70 for detecting a detector 50 of motor 40 drive currents, the comparer 60 being connected with detector 50 and being connected with comparer 60 and motor 40.
In described packed tower 30, for accommodating the volume of wood chip, fix.
Described pay-off 20 is spiral pay-off 20 or pusher feed device 20, for the wood chip of feed bin 10 is sent in packed tower 30 by the mode of spiral or the mode of push rod.
Described motor 40 is for driving described pay-off 20 feedings.
Described detector 50 is for the drive current of detecting real-time motor 40.
In described comparer 60, be preset with a drive current threshold values, driving current value when described drive current threshold values is greater than motor 40 and turns round with nominal load.
Whether described control module 70 turns round for controlling motor 40.
When the volume quantitative control system of described wood materials extrusion process turns round, thereby described motor 40 drives described pay-off 20 runnings that the wood chip in feed bin 10 is sent to packed tower 30, drive current in detector 50 detecting real-time motors 40, and the signal of the driving current value detecting is sent to comparer 60, after making the driving current value that detects in comparer 60 and drive current threshold values relatively, then comparer 60 is sent to control module 70 by comparative result, and described control module 70 receives the backward motor 40 of described comparison signal and sends working control signal.Concrete condition is as follows:
When the volume quantitative control system of described wood materials extrusion process turns round, thereby described motor 40 drives described pay-off 20 runnings that the wood chip in feed bin 10 is sent to packed tower 30.When packed tower 30 is not filled, described motor 40 is pressed nominal load running, the drive current that detects motor 40 when detector 50 is less than drive current threshold values and the signal of the driving current value detecting is sent to after comparer 60, the driving current value detecting in comparer 60 and the comparison of drive current threshold values, then comparer 60 is sent to control module 70 by comparative result, control module 70 sends the control signal remaining in operation to motor 40, control motor 40 continuous runnings until packed tower 30 is filled.After this, when pay-off 20 continues feeding, its suffered resistance increases, and causes motor 40 loads to increase, and then causes driving current value to increase.The drive current that detects motor 40 when detector 50 is more than or equal to drive current threshold values and the signal of the driving current value detecting is sent to after comparer 60, the driving current value detecting in comparer 60 and drive current threshold values relatively after, comparer 60 is sent to control module 70 by comparative result, control module 70 motors 40 send the control signal shutting down, control described motor 40 and shut down, and then cause pay-off 20 to stop feeding.Now, feeding completes.
In the present invention, variation by detecting real-time motor 40 drive currents judges whether packed tower 30 fills up for accommodating the space of wood chip, overcome because the bulk density of wood chip is different, material is different and the impact of factor on each amount of filler such as screw motor response lag and inertia, thereby make each filler quantitative error scope less, moulding wooden unit quality fluctuation is little.
Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change and distortion all should belong to the protection domain of the claims in the present invention.
Claims (4)
1. the volume quantitative control system of a wood materials extrusion process, it is characterized in that: comprise the feed bin of storing wood chip, packed tower, pay-off, motor, detector, comparer and control module, in described comparer, be preset with a drive current threshold values, thereby described motor drives described pay-off running that the wood chip in feed bin is sent to packed tower, drive current in detector detecting real-time motor, and the signal of the driving current value detecting is sent to comparer, after making the driving current value that detects in comparer and drive current threshold values relatively, then comparer is sent to control module by comparative result, described control module receives the backward motor of described comparison signal and sends working control signal.
2. the volume quantitative control system of wood materials extrusion process as claimed in claim 1, it is characterized in that: the drive current that detector detects motor is less than drive current threshold values and the signal of the driving current value detecting is sent to after comparer, the driving current value detecting in comparer and the comparison of drive current threshold values, then comparer is sent to control module by comparative result, control module sends the control signal remaining in operation to motor, control motor continuous running.
3. the volume quantitative control system of wood materials extrusion process as claimed in claim 1, it is characterized in that: the drive current that detector detects motor is more than or equal to drive current threshold values and the signal of the driving current value detecting is sent to after comparer, the driving current value detecting in comparer and drive current threshold values relatively after, comparer is sent to control module by comparative result, control module motor sends the control signal shutting down, and controls described motor and shuts down.
4. the volume quantitative control system of wood materials extrusion process as claimed in claim 1, is characterized in that: described pay-off is spiral pay-off or pusher feed device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310648604.2A CN103631167B (en) | 2013-12-04 | 2013-12-04 | The volume quantitative control system of wood materials extrusion process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310648604.2A CN103631167B (en) | 2013-12-04 | 2013-12-04 | The volume quantitative control system of wood materials extrusion process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103631167A true CN103631167A (en) | 2014-03-12 |
| CN103631167B CN103631167B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310648604.2A Expired - Fee Related CN103631167B (en) | 2013-12-04 | 2013-12-04 | The volume quantitative control system of wood materials extrusion process |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080231219A1 (en) * | 2007-03-23 | 2008-09-25 | Matsushita Electric Industrial Co., Ltd. | Motor drive apparatus and motor drive method |
| CN101559818A (en) * | 2009-05-16 | 2009-10-21 | 江南大学 | Control technology for electric motor car with nature boost function |
| EP2241434A2 (en) * | 2009-04-13 | 2010-10-20 | Dieffenbacher GmbH + Co. KG | Method and installation for producing pellets made of biomass in a pelleting mass for use as fuel in fireplaces |
| CN102653694A (en) * | 2011-03-02 | 2012-09-05 | 永昌生绿能科技有限公司 | Movable automatic system and method for making curing formed product |
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2013
- 2013-12-04 CN CN201310648604.2A patent/CN103631167B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080231219A1 (en) * | 2007-03-23 | 2008-09-25 | Matsushita Electric Industrial Co., Ltd. | Motor drive apparatus and motor drive method |
| EP2241434A2 (en) * | 2009-04-13 | 2010-10-20 | Dieffenbacher GmbH + Co. KG | Method and installation for producing pellets made of biomass in a pelleting mass for use as fuel in fireplaces |
| US20100263267A1 (en) * | 2009-04-13 | 2010-10-21 | Dieffenbacher Gmbh + Co. Kg | Method and Installation for the Production of Pellets from Biomass in a Pelletizing Press for Use as Fuel in Furnaces |
| CN101559818A (en) * | 2009-05-16 | 2009-10-21 | 江南大学 | Control technology for electric motor car with nature boost function |
| CN102653694A (en) * | 2011-03-02 | 2012-09-05 | 永昌生绿能科技有限公司 | Movable automatic system and method for making curing formed product |
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| CN103631167B (en) | 2015-12-02 |
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Granted publication date: 20151202 Termination date: 20171204 |