CN108572602A - A kind of control device of tablet press machine - Google Patents
A kind of control device of tablet press machine Download PDFInfo
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- CN108572602A CN108572602A CN201810810622.9A CN201810810622A CN108572602A CN 108572602 A CN108572602 A CN 108572602A CN 201810810622 A CN201810810622 A CN 201810810622A CN 108572602 A CN108572602 A CN 108572602A
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- 238000004080 punching Methods 0.000 claims description 111
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2622—Press
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Abstract
The invention discloses a kind of control devices of tablet press machine.Described device includes：Analog input module, digital input module and digital output module；Wherein, the analog input module, the punch pressure signal for acquiring tablet press machine according to default collection period；The punch pressure signal of the tablet press machine is stored into circle queue；The digital input module, for receive the tablet press machine work as preshoot position signal；Described work as the corresponding punch pressure signal of preshoot position signal when preshoot position signal obtains in the circle queue in response to described；The digital output module, it is described when signal corresponding punch pressure signal in preshoot position controls the tablet press machine for basis.More accurately tablet press machine can be controlled.
Description
Technical Field
The embodiment of the invention relates to the technical field of tablet presses, in particular to a control device of a tablet press.
Background
The tablet press is mainly applied to pharmaceutical enterprises, is used for pressing granular or powdery materials into round, special-shaped or tablets with characters, symbols or figures, and is key equipment suitable for mass production. When the tablet press works, an upper punch die arranged in an upper punch disc moves downwards under the restraint of an early pull-down guide rail, a lower punch die arranged in a lower punch disc moves upwards under the restraint of a lifting guide rail, and finally materials in the dies in the middle punch disc are pressed into tablets.
The tablet press has various specifications, and can press round tablets, lettering tablets, special-shaped tablets, double-layer tablets, multi-layer tablets, annular tablets, core-spun tablets and other tablets. High speed, high throughput is a goal that has been sought after for many years by tablet press manufacturers, and the major tablet press manufacturers have had tablets with a throughput of up to 100 million tablets per hour. The maximum output of the ModulD type tablet press produced by Courtoy reaches 107 ten thousand tablets/hour; the maximum output of 4090i type tablet press produced by Fette company reaches 150 ten thousand tablets per hour, and the output is far higher than that of domestic tablet press.
In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art:
most of the existing tablet presses directly adopt a control module of a PLC (programmable logic controller) to collect pressure, and the program scanning period of the general small and medium-sized PLC is above millisecond level, so that the collected pressure is not the real pressure of the current impact position easily, and the tablet press cannot be accurately controlled. There is therefore a need to overcome this problem in some way as far as possible, but there is no effective solution in the prior art.
Disclosure of Invention
The invention provides a control device of a tablet press, which can more accurately control the tablet press.
The embodiment of the invention provides a control device of a tablet press, which comprises: the device comprises an analog input module, a digital input module and a digital output module; wherein,
the analog input module is used for acquiring a punch pressure signal of the tablet press according to a preset acquisition cycle; storing a punch pressure signal of the tablet press into an annular queue;
the digital input module is used for receiving a current punching signal of the tablet press; acquiring a punch pressure signal corresponding to the current position signal in the circular queue in response to the current position signal;
and the digital output module is used for controlling the tablet press according to the punch pressure signal corresponding to the current punch position signal.
In the above embodiment, the analog input module includes: a first analog input submodule and a second analog input submodule; wherein,
the first analog input submodule is used for acquiring a first punch pressure signal of the tablet press according to the preset period; storing a first punch pressure signal of the tablet press into the circular queue;
the second analog input submodule is used for acquiring a second punch pressure signal of the tablet press according to the preset period; storing a second punch pressure signal of the tablet press into the circular queue; the ram pressure signal comprises: the first ram pressure signal and the second ram pressure signal.
In the above embodiment, the digital input module includes: a first digital input submodule, a second digital input submodule and a third digital input submodule; wherein,
the first digital input submodule is used for receiving a current first punching signal of the tablet press; responding to the current first punching signal to obtain a punch pressure signal corresponding to the current first punching signal in the annular queue;
the second digital input submodule is used for receiving a current second punching signal of the tablet press; responding to the current second punching signal to obtain a punch pressure signal corresponding to the current second punching signal in the annular queue; the current rush signal comprises: the current first burst signal and the current second burst signal;
the third digital input submodule is used for receiving a zero position signal of the tablet press; and controlling the first digital input sub-module and the second digital input sub-module to acquire a punch pressure signal corresponding to the current first punching signal and a punch pressure signal corresponding to the current second punching signal in the annular queue according to the zero position signal of the tablet press.
In the above embodiment, the digital output module includes: a first digital output submodule and a second digital output submodule; wherein,
the first digital output submodule is used for controlling the tablet press according to a punch pressure signal corresponding to the current first punching signal;
and the second digital output submodule is used for controlling the tablet press according to the punch pressure signal corresponding to the current second punching position signal.
In the above embodiment, the first digital input sub-module is specifically configured to determine, in response to the current first burst signal, a first acquisition time point corresponding to the current first burst signal and a second acquisition time point corresponding to the current first burst signal; acquiring a punch pressure signal corresponding to the current first punching signal in the annular queue according to a first acquisition time point corresponding to the current first punching signal and a second acquisition time point corresponding to the current first punching signal;
the second digital input sub-module is specifically configured to determine, in response to the current second burst signal, a first acquisition time point corresponding to the current second burst signal and a second acquisition time point corresponding to the current second burst signal; and acquiring a punch pressure signal corresponding to the current second punching signal in the annular queue according to a first acquisition time point corresponding to the current second punching signal and a second acquisition time point corresponding to the current second punching signal.
In the above embodiment, the third digital input sub-module is specifically configured to control the first digital input sub-module and the second digital input sub-module to obtain, in the ring queue, a punch pressure signal corresponding to the current first punching signal and a punch pressure signal corresponding to the current second punching signal if a zero-position signal of the tablet press machine is at a low level; if the zero position signal of the tablet press is in a high level, controlling the first digital input sub-module and the second digital input sub-module to empty a punch pressure signal corresponding to the current first punching signal and a punch pressure signal corresponding to the current second punching signal in the annular queue; or if the zero position signal of the tablet press is at a high level, controlling the first digital input sub-module and the second digital input sub-module to acquire a punch pressure signal corresponding to the current first punching signal and a punch pressure signal corresponding to the current second punching signal in the annular queue; and if the zero position signal of the tablet press is low level, controlling the first digital input sub-module and the second digital input sub-module to empty the punch pressure signal corresponding to the current first punching signal and the punch pressure signal corresponding to the current second punching signal in the annular queue.
In the above embodiment, the first digital output sub-module is specifically configured to determine whether a punch pressure signal corresponding to the current first punching signal is within an effective signal range; if the punch pressure signal corresponding to the current first punching position signal is within the effective signal range, controlling the tablet press to divide the current first tablet into effective tablet queues;
the second digital output submodule is specifically configured to determine whether a punch pressure signal corresponding to the current second punch signal is within the effective signal range; and if the punch pressure signal corresponding to the current second punching position signal is within the effective signal range, controlling the tablet press to divide the current second tablet into the effective tablet queue.
In the above embodiment, the first digital output sub-module is further configured to control the tablet press to divide the current first tablet into the invalid tablet queues if the punch pressure signal corresponding to the current first punch signal is not within the valid signal range;
the second digital output sub-module is further configured to control the tablet press to divide the current second tablet into the invalid tablet queue if the punch pressure signal corresponding to the current second punch signal is not within the valid signal range.
In the above embodiment, the first digital output module is specifically configured to determine whether a punch pressure signal corresponding to the current first punch signal is greater than a first preset pressure threshold and smaller than a second preset pressure threshold; if the punch pressure signal corresponding to the current first punching signal is larger than the first preset pressure threshold and smaller than the second preset pressure threshold, judging that the punch pressure signal corresponding to the current first punching signal is within the effective signal range; the first preset pressure threshold and the second preset pressure threshold are boundary values of the effective signal range;
the second digital output module is specifically configured to determine whether a punch pressure signal corresponding to the current second punch signal is greater than the first preset pressure threshold and smaller than the second preset pressure threshold; and if the punch pressure signal corresponding to the current second punching signal is larger than the first preset pressure threshold and smaller than the second preset pressure threshold, judging that the punch pressure signal corresponding to the current second punching signal is in the effective signal range.
In the above embodiment, the first digital output module is further configured to determine whether a punch pressure signal corresponding to the current first punching signal is smaller than a first preset pressure threshold or greater than or equal to a second preset pressure threshold; if the punch pressure signal corresponding to the current first punching signal is smaller than the first preset pressure threshold value or is larger than or equal to the second preset pressure threshold value, judging that the punch pressure signal corresponding to the current first punching signal is not in the effective signal range;
the second digital output module is further configured to determine whether a punch pressure signal corresponding to the current second punch signal is smaller than a first preset pressure threshold or greater than or equal to a second preset pressure threshold; and if the punch pressure signal corresponding to the current second punching signal is smaller than the first preset pressure threshold value or is larger than or equal to the second preset pressure threshold value, judging that the punch pressure signal corresponding to the current second punching signal is not in the effective signal range.
The control device of the tablet press provided by the invention has the advantages that the analog input module acquires a punch pressure signal of the tablet press according to a preset acquisition cycle; storing a punch pressure signal of the tablet press into an annular queue; the digital input module receives a current punching signal of the tablet press; acquiring a punch pressure signal corresponding to the current position signal in the annular queue in response to the current position signal; and the digital output module controls the tablet press according to the punch pressure signal corresponding to the current punch position signal. That is to say, in the technical solution provided by the embodiment of the present invention, the digital output module may control the tablet press according to the punch pressure signal corresponding to the current punch position signal acquired by the digital input module in the circular queue. Therefore, compared with the prior art, the control device of the tablet press provided by the embodiment of the invention can control the tablet press more accurately; moreover, the technical scheme of the embodiment of the invention is simple and convenient to realize, convenient to popularize and wider in application range.
Drawings
Fig. 1 is a schematic structural diagram of a control device of a tablet press according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a control device of a tablet press according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a schematic structural diagram of a control device of a tablet press according to an embodiment of the present invention. As shown in fig. 1, the control device of the tablet press may include: an analog input module 101, a digital input module 102 and a digital output module 103; wherein,
the analog input module 101 is used for acquiring a punch pressure signal of the tablet press according to a preset acquisition cycle; the punch pressure signal of the tablet press is stored into an annular queue.
In a specific embodiment of the present invention, the analog input module 101 may acquire a punch pressure signal of the tablet press according to a preset acquisition cycle; the punch pressure signal of the tablet press is stored into an annular queue. Specifically, the analog input module 101 can acquire a punch pressure signal of the tablet press every 40-50 us; the punch pressure signal of the tablet press is stored into an annular queue.
A digital input module 102, configured to receive a current punch position signal of the tablet press; and acquiring a punch pressure signal corresponding to the current punching signal in the circular queue in response to the current punching signal.
In a specific embodiment of the present invention, the digital input module 102 may receive a current punch signal of the tablet press; and then responding to the current punching signal to acquire a punch pressure signal corresponding to the current punching signal in the circular queue. In an embodiment of the present invention, a typical high speed rotary tablet press has about 75 punch stations, a throughput of 150W (tablets/hour) per pass, a fixed punch to punch spacing: 3600/(1500000/2) ═ 4.8ms, the width of the punch and the distance of the punch position are approximately 1: 3, the time actually consumed at the punches is about 1.2 ms. To accurately describe the pressure change of the whole punch during tabletting, about 20 punch pressure signals need to be acquired.
And the digital output module 103 is used for controlling the tablet press according to the punch pressure signal corresponding to the current punch signal.
In an embodiment of the present invention, the digital output module 103 may control the tablet press according to the punch pressure signal corresponding to the current punch position signal. Specifically, the digital output module 103 may determine whether the punch pressure signal corresponding to the current punch signal is within the valid signal range; if the punch pressure signal corresponding to the current punch signal is within the effective signal range, the digital output module 103 may control the tablet press to divide the current first tablet into an effective tablet queue; if the punch pressure signal corresponding to the current punch signal is not within the valid signal range, the digital output module 103 may control the tablet press to divide the current first tablet into the invalid tablet queue.
The control device of the tablet press provided by the invention has the advantages that the analog input module acquires a punch pressure signal of the tablet press according to a preset acquisition cycle; storing a punch pressure signal of the tablet press into an annular queue; the digital input module receives a current punching signal of the tablet press; acquiring a punch pressure signal corresponding to the current position signal in the annular queue in response to the current position signal; and the digital output module controls the tablet press according to the punch pressure signal corresponding to the current punch position signal. That is to say, in the technical solution provided by the embodiment of the present invention, the digital output module may control the tablet press according to the punch pressure signal corresponding to the current punch position signal acquired by the digital input module in the circular queue. Therefore, compared with the prior art, the control device of the tablet press provided by the embodiment of the invention can control the tablet press more accurately; moreover, the technical scheme of the embodiment of the invention is simple and convenient to realize, convenient to popularize and wider in application range.
Example two
Fig. 2 is a schematic structural diagram of a control device of a tablet press according to a second embodiment of the present invention. As shown in fig. 2, the analog input module 101 includes: a first analog input sub-module 1011 and a second analog input sub-module 1012; wherein,
the first analog input submodule 1011 is used for acquiring a first punch pressure signal of the tablet press according to a preset period; a first punch pressure signal of the tablet press is stored into the circular queue.
In a specific embodiment of the present invention, the first analog input sub-module 1011 may collect a first punch pressure signal of the tablet press according to a preset period; a first punch pressure signal of the tablet press is stored into the circular queue. Specifically, the first analog input sub-module 1011 may collect a first punch pressure signal of the sheeter every 40-50 us; a first punch pressure signal of the tablet press is stored into the circular queue.
A second analog input sub-module 1012 for acquiring a second punch pressure signal of the tablet press according to a preset period; a second punch pressure signal of the tablet press is stored into the circular queue.
In a specific embodiment of the present invention, the second analog input sub-module 1012 may collect a second punch pressure signal of the tablet press according to a preset period; a second punch pressure signal of the tablet press is stored into the circular queue. Specifically, the second analog input sub-module 1012 may collect a second punch pressure signal of the tablet press every 40-50 us; a second punch pressure signal of the tablet press is stored into the circular queue.
Preferably, in an embodiment of the present invention, the digital input module 102 includes: a first digital input sub-module 1021, a second digital input sub-module 1022, and a third digital input sub-module 1023; wherein,
the first digital input submodule 1021 is used for receiving a current first punching signal of the tablet press; and acquiring a punch pressure signal corresponding to the current first punching signal in the circular queue in response to the current first punching signal.
In an embodiment of the present invention, the first digital input sub-module 1021 is specifically configured to determine, in response to the current first burst signal, a first acquisition time point corresponding to the current first burst signal and a second acquisition time point corresponding to the current first burst signal; then, the first digital input word module 1021 may obtain the punch pressure signal corresponding to the current first punching signal in the ring queue according to the first collecting time point corresponding to the current first punching signal and the second collecting time point corresponding to the current first punching signal.
A second digital input sub-module 1022 for receiving a current second burst signal of the tablet press; and responding to the current second punching signal to acquire a punch pressure signal corresponding to the current second punching signal in the circular queue.
In an embodiment of the present invention, the second digital input sub-module 1022 is specifically configured to determine, in response to the current second burst signal, a first acquisition time point corresponding to the current second burst signal and a second acquisition time point corresponding to the current second burst signal; then, the second digital input sub-module 1022 may obtain the punch pressure signal corresponding to the current second punching signal in the circular queue according to the first collecting time point corresponding to the current second punching signal and the second collecting time point corresponding to the current second punching signal.
The third digital input submodule 1023 is used for receiving a zero position signal of the tablet press; and controlling the first digital input submodule and the second digital input submodule to acquire a punch pressure signal corresponding to the current first punching signal and a punch pressure signal corresponding to the current second punching signal in the annular queue according to the zero position signal of the tablet press.
In an embodiment of the present invention, the third digital input submodule 1023 is specifically configured to, if the zero signal of the tablet press is low level, control the first digital input submodule 1021 and the second digital input submodule 1022 to obtain, in the ring queue, a punch pressure signal corresponding to the current first punching signal and a punch pressure signal corresponding to the current second punching signal; if the zero position signal of the tablet press is a high level, controlling the first digital input submodule 1021 and the second digital input submodule 1022 to empty a punch pressure signal corresponding to a current first punching signal and a punch pressure signal corresponding to a current second punching signal in the circular queue; or, if the zero position signal of the tablet press is a high level, controlling the first digital input submodule 1021 and the second digital input submodule 1022 to obtain a punch pressure signal corresponding to the current first punching signal and a punch pressure signal corresponding to the current second punching signal in the circular queue; and if the zero position signal of the tablet press is in a low level, controlling the first digital input submodule 1021 and the second digital input submodule 1022 to empty the punch pressure signal corresponding to the current first punching signal and the punch pressure signal corresponding to the current second punching signal in the circular queue.
Preferably, in the embodiment of the present invention, the digital output module 103 includes: first and second digital output sub-modules 1031 and 1032; wherein,
and the first digital output sub-module 1031 is used for controlling the tablet press according to the punch pressure signal corresponding to the current first punch position signal.
In a specific embodiment of the present invention, the first digital output sub-module 1031 is specifically configured to determine whether a punch pressure signal corresponding to the current first punch signal is within an effective signal range; and if the punch pressure signal corresponding to the current first punching signal is in the effective signal range, controlling the tablet press to divide the current first tablet into an effective tablet queue.
Specifically, the first digital output sub-module 1031 is further configured to control the tablet press to divide the current first tablet into the invalid tablet queue if the punch pressure signal corresponding to the current first punch signal is not within the valid signal range.
Specifically, the first digital output module 1031 is specifically configured to determine whether a punch pressure signal corresponding to the current first punch signal is greater than a first preset pressure threshold and smaller than a second preset pressure threshold; if the punch pressure signal corresponding to the current first punching signal is larger than a first preset pressure threshold and smaller than a second preset pressure threshold, judging that the punch pressure signal corresponding to the current first punching signal is in an effective signal range; the first and second predetermined pressure thresholds are boundary values of the valid signal range.
Specifically, the first digital output module 1031 is further configured to determine whether a punch pressure signal corresponding to the current first punch signal is smaller than a first preset pressure threshold or greater than or equal to a second preset pressure threshold; and if the punch pressure signal corresponding to the current first punching signal is smaller than a first preset pressure threshold value or larger than or equal to a second preset pressure threshold value, judging that the punch pressure signal corresponding to the current first punching signal is not in the effective signal range.
And the second digital output sub-module 1032 is used for controlling the tablet press according to the punch pressure signal corresponding to the current second punch signal.
In an embodiment of the present invention, the second digital output sub-module 1032 is specifically configured to determine whether a punch pressure signal corresponding to the current second punch signal is within an effective signal range; and if the punch pressure signal corresponding to the current second punching position signal is in the effective signal range, controlling the tablet press to divide the current second tablet into the effective tablet queue.
Specifically, the second digital output sub-module 1032 is further configured to control the tablet press to divide the current second tablet into the invalid tablet queue if the punch pressure signal corresponding to the current second punch signal is not within the valid signal range.
Specifically, the second digital output module 1032 is specifically configured to determine whether a punch pressure signal corresponding to the current second punch signal is greater than a first preset pressure threshold and smaller than a second preset pressure threshold; and if the punch pressure signal corresponding to the current second punching signal is larger than the first preset pressure threshold and smaller than the second preset pressure threshold, judging that the punch pressure signal corresponding to the current second punching signal is in the effective signal range.
Specifically, the second digital output module 1032 is further configured to determine whether a punch pressure signal corresponding to the current second punch signal is smaller than a first preset pressure threshold or greater than or equal to a second preset pressure threshold; and if the punch pressure signal corresponding to the current second punching signal is smaller than the first preset pressure threshold value or is larger than or equal to the second preset pressure threshold value, judging that the punch pressure signal corresponding to the current second punching signal is not in the effective signal range.
The control device of the tablet press provided by the invention has the advantages that the analog input module acquires a punch pressure signal of the tablet press according to a preset acquisition cycle; storing a punch pressure signal of the tablet press into an annular queue; the digital input module receives a current punching signal of the tablet press; acquiring a punch pressure signal corresponding to the current position signal in the annular queue in response to the current position signal; and the digital output module controls the tablet press according to the punch pressure signal corresponding to the current punch position signal. That is to say, in the technical solution provided by the embodiment of the present invention, the digital output module may control the tablet press according to the punch pressure signal corresponding to the current punch position signal acquired by the digital input module in the circular queue. Therefore, compared with the prior art, the control device of the tablet press provided by the embodiment of the invention can control the tablet press more accurately; moreover, the technical scheme of the embodiment of the invention is simple and convenient to realize, convenient to popularize and wider in application range.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A control device for a tablet press, characterized in that the device comprises: the device comprises an analog input module, a digital input module and a digital output module; wherein,
the analog input module is used for acquiring a punch pressure signal of the tablet press according to a preset acquisition cycle; storing a punch pressure signal of the tablet press into an annular queue;
the digital input module is used for receiving a current punching signal of the tablet press; acquiring a punch pressure signal corresponding to the current position signal in the circular queue in response to the current position signal;
and the digital output module is used for controlling the tablet press according to the punch pressure signal corresponding to the current punch position signal.
2. The apparatus of claim 1, wherein the analog input module comprises: a first analog input submodule and a second analog input submodule; wherein,
the first analog input submodule is used for acquiring a first punch pressure signal of the tablet press according to the preset period; storing a first punch pressure signal of the tablet press into the circular queue;
the second analog input submodule is used for acquiring a second punch pressure signal of the tablet press according to the preset period; storing a second punch pressure signal of the tablet press into the circular queue; the ram pressure signal comprises: the first ram pressure signal and the second ram pressure signal.
3. The apparatus of claim 2, wherein the digital input module comprises: a first digital input submodule, a second digital input submodule and a third digital input submodule; wherein,
the first digital input submodule is used for receiving a current first punching signal of the tablet press; responding to the current first punching signal to obtain a punch pressure signal corresponding to the current first punching signal in the annular queue;
the second digital input submodule is used for receiving a current second punching signal of the tablet press; responding to the current second punching signal to obtain a punch pressure signal corresponding to the current second punching signal in the annular queue; the current rush signal comprises: the current first burst signal and the current second burst signal;
the third digital input submodule is used for receiving a zero position signal of the tablet press; and controlling the first digital input sub-module and the second digital input sub-module to acquire a punch pressure signal corresponding to the current first punching signal and a punch pressure signal corresponding to the current second punching signal in the annular queue according to the zero position signal of the tablet press.
4. The apparatus of claim 3, wherein the digital output module comprises: a first digital output submodule and a second digital output submodule; wherein,
the first digital output submodule is used for controlling the tablet press according to a punch pressure signal corresponding to the current first punching signal;
and the second digital output submodule is used for controlling the tablet press according to the punch pressure signal corresponding to the current second punching position signal.
5. The apparatus of claim 3, wherein:
the first digital input sub-module is specifically configured to determine, in response to the current first burst signal, a first acquisition time point corresponding to the current first burst signal and a second acquisition time point corresponding to the current first burst signal; acquiring a punch pressure signal corresponding to the current first punching signal in the annular queue according to a first acquisition time point corresponding to the current first punching signal and a second acquisition time point corresponding to the current first punching signal;
the second digital input sub-module is specifically configured to determine, in response to the current second burst signal, a first acquisition time point corresponding to the current second burst signal and a second acquisition time point corresponding to the current second burst signal; and acquiring a punch pressure signal corresponding to the current second punching signal in the annular queue according to a first acquisition time point corresponding to the current second punching signal and a second acquisition time point corresponding to the current second punching signal.
6. The apparatus of claim 3, wherein:
the third digital input submodule is specifically configured to control the first digital input submodule and the second digital input submodule to obtain a punch pressure signal corresponding to the current first punching signal and a punch pressure signal corresponding to the current second punching signal in the circular queue if the zero-position signal of the tablet press is at a low level; if the zero position signal of the tablet press is in a high level, controlling the first digital input sub-module and the second digital input sub-module to empty a punch pressure signal corresponding to the current first punching signal and a punch pressure signal corresponding to the current second punching signal in the annular queue; or if the zero position signal of the tablet press is at a high level, controlling the first digital input sub-module and the second digital input sub-module to acquire a punch pressure signal corresponding to the current first punching signal and a punch pressure signal corresponding to the current second punching signal in the annular queue; and if the zero position signal of the tablet press is low level, controlling the first digital input sub-module and the second digital input sub-module to empty the punch pressure signal corresponding to the current first punching signal and the punch pressure signal corresponding to the current second punching signal in the annular queue.
7. The apparatus of claim 4, wherein:
the first digital output submodule is specifically used for judging whether a punch pressure signal corresponding to the current first punching signal is within an effective signal range; if the punch pressure signal corresponding to the current first punching position signal is within the effective signal range, controlling the tablet press to divide the current first tablet into effective tablet queues;
the second digital output submodule is specifically configured to determine whether a punch pressure signal corresponding to the current second punch signal is within the effective signal range; and if the punch pressure signal corresponding to the current second punching position signal is within the effective signal range, controlling the tablet press to divide the current second tablet into the effective tablet queue.
8. The apparatus of claim 7, wherein:
the first digital output sub-module is further used for controlling the tablet press to divide the current first tablet into an invalid tablet queue if the punch pressure signal corresponding to the current first punch signal is not within the valid signal range;
the second digital output sub-module is further configured to control the tablet press to divide the current second tablet into the invalid tablet queue if the punch pressure signal corresponding to the current second punch signal is not within the valid signal range.
9. The apparatus of claim 8, wherein:
the first digital output module is specifically configured to determine whether a punch pressure signal corresponding to the current first punch position signal is greater than a first preset pressure threshold and smaller than a second preset pressure threshold; if the punch pressure signal corresponding to the current first punching signal is larger than the first preset pressure threshold and smaller than the second preset pressure threshold, judging that the punch pressure signal corresponding to the current first punching signal is within the effective signal range; the first preset pressure threshold and the second preset pressure threshold are boundary values of the effective signal range;
the second digital output module is specifically configured to determine whether a punch pressure signal corresponding to the current second punch signal is greater than the first preset pressure threshold and smaller than the second preset pressure threshold; and if the punch pressure signal corresponding to the current second punching signal is larger than the first preset pressure threshold and smaller than the second preset pressure threshold, judging that the punch pressure signal corresponding to the current second punching signal is in the effective signal range.
10. The apparatus of claim 9, wherein:
the first digital output module is further configured to determine whether a punch pressure signal corresponding to the current first punch position signal is smaller than a first preset pressure threshold or greater than or equal to a second preset pressure threshold; if the punch pressure signal corresponding to the current first punching signal is smaller than the first preset pressure threshold value or is larger than or equal to the second preset pressure threshold value, judging that the punch pressure signal corresponding to the current first punching signal is not in the effective signal range;
the second digital output module is further configured to determine whether a punch pressure signal corresponding to the current second punch signal is smaller than a first preset pressure threshold or greater than or equal to a second preset pressure threshold; and if the punch pressure signal corresponding to the current second punching signal is smaller than the first preset pressure threshold value or is larger than or equal to the second preset pressure threshold value, judging that the punch pressure signal corresponding to the current second punching signal is not in the effective signal range.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111890722A (en) * | 2020-08-06 | 2020-11-06 | 上海海得控制系统股份有限公司 | Method and device for controlling pressure of punch of tablet press, storage medium and electronic equipment |
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