CN109956107B - Control equipment, system and method for packing machine and engineering machinery - Google Patents
Control equipment, system and method for packing machine and engineering machinery Download PDFInfo
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- CN109956107B CN109956107B CN201711340096.6A CN201711340096A CN109956107B CN 109956107 B CN109956107 B CN 109956107B CN 201711340096 A CN201711340096 A CN 201711340096A CN 109956107 B CN109956107 B CN 109956107B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
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Abstract
The invention relates to the technical field of packaging machine control, and discloses a packaging machine control device, a packaging machine control system, a packaging machine control method and engineering machinery, wherein one transfer mechanism corresponds to a plurality of packaging machines, each packaging machine comprises a packaging machine control device, and the packaging machine control device comprises: receiving means for receiving a discharge inhibiting signal from a downstream packaging machine relative to the present packaging machine; and the control device is used for controlling the unpacking of the packing machine according to the unpacking forbidding signal. The invention calculates the total time of the packages discharged by the upstream packaging machine to reach the packaging machine according to the package discharging signals, and controls the package discharging of the packaging machine according to the calculated total time, thereby effectively controlling and avoiding the problems of package stacking and package splicing when a plurality of packaging machines work cooperatively, and effectively avoiding the problem of uneven productivity when the downstream packaging machine waits for a long time.
Description
Technical Field
The invention relates to a control technology of a packaging machine, in particular to a control device, a control system, a control method and engineering machinery of the packaging machine.
Background
Two-station or unit packaging is common in dry-mixed mortar packaging machine systems, and finished bags packaged in the production process are turned over and fall to a belt and other running mechanisms to be conveyed out of a station. When the process requirement or the site requirement needs to be realized, a plurality of stations are linearly installed, so that finished products all fall into the same operation mechanism or the belt, and the possibility that the packages are overlapped or spliced when the back sequence stations fall into the bags exists, so that the sorting and the transportation are difficult.
Because of the characteristics of equipment and production process and various factors of manual intervention, the working time of metering, packaging, bag turning, bag inserting and the like of the packaging machine is very unstable and irregular. The packaging station is responsible for automatically producing and packaging dry-mixed mortar products according to set parameters, and metering and packaging are completed by an independent PLC and related electronic control, and then the packages are unloaded to a running mechanism, such as a belt. The belt is responsible for transporting the package unloaded from the station to other sorting or transferring mechanisms for subsequent processing. Because of the operating characteristics of the equipment, the output rate of the packaging stations is unstable, the time is fast and slow, and the control program of each packaging station is operated independently. This is possible as shown in figure 1.
Fig. 1 is a schematic diagram of a packaging machine system provided by the prior art, as shown in fig. 1, a packaging machine 1 on the left side is likely to be overlapped or attached to a belt 2 of a belt conveyor, namely, a bag splicing or bag stacking phenomenon occurs, which causes difficulty in final sorting and transferring and thus reduces production efficiency, wherein the reason of the bag splicing or bag stacking phenomenon on the belt 2 is partly that the packaging machine 1 is still normally unloaded no matter how many bags are on the belt 2 or the distance between the bags.
Disclosure of Invention
The invention aims to provide a control device, a control system, a control method and an engineering machine of a packing machine, which are used for avoiding the phenomenon of bag splicing or bag stacking on a belt of a belt conveyor.
In order to achieve the above object, the present invention provides a control apparatus for a packing machine, wherein a belt conveyor corresponds to a plurality of packing machines, each packing machine includes the control apparatus for the packing machine, the apparatus includes: receiving means for receiving a discharge inhibiting signal from a downstream packaging machine relative to the present packaging machine; and the control device is used for controlling the unpacking of the packing machine according to the unpacking forbidding signal.
Optionally, the controlling the unpacking of the packing machine according to the unpacking forbidding signal comprises: and under the condition that the receiving device receives a unpacking forbidding signal from a downstream packaging machine opposite to the packaging machine and the number of continuous packages at the upstream of the packaging machine is less than a first preset number, controlling the packaging machine to separate one unpacking position for unpacking again and sending a unpacking stopping signal to the downstream packaging machine opposite to the packaging machine.
Optionally, the controlling the unpacking of the packing machine according to the unpacking forbidding signal comprises: and under the condition that the receiving device receives a unpacking forbidding signal from a downstream packaging machine opposite to the packaging machine and a unpacking stopping signal from an upstream packaging machine opposite to the packaging machine, controlling the packaging machine to separate one unpacking position for unpacking again and sending a unpacking stopping signal to the downstream packaging machine opposite to the packaging machine.
Optionally, the controlling the unpacking of the packing machine according to the unpacking forbidding signal comprises: and under the condition that the receiving device receives a stop unpacking signal from an upstream packing machine opposite to the packing machine and the packing machine sends an unpacking inhibiting signal, controlling the packing machine to unpack under the condition that the unpacking position exists.
Correspondingly, the invention also provides a control system of the packing machine, which comprises: a transmitting device for transmitting a discharge inhibiting signal to an upstream packaging machine relative to the packaging machine in the case where the packaging machine is ready for discharge and the number of consecutive packages upstream of the packaging machine is greater than a second predetermined number; and the packaging machine control apparatus described above.
Correspondingly, the invention also provides engineering machinery comprising the packaging machine control system.
Correspondingly, the invention also provides a control method of the packing machine, wherein one belt conveyor corresponds to a plurality of packing machines, and each packing machine is controlled by the control method of the packing machine, which is characterized by comprising the following steps: receiving a discharge inhibiting signal from a downstream packaging machine relative to the present packaging machine; and controlling the unpacking of the packing machine according to the unpacking forbidding signal.
Optionally, the controlling the unpacking of the packing machine according to the unpacking forbidding signal comprises: and under the condition that a discharge forbidding signal from a downstream packaging machine opposite to the packaging machine is received and the number of continuous packages at the upstream packaging machine is less than a first preset number, controlling the packaging machine to separate a discharge position for discharging again and sending a discharge stopping signal to the downstream packaging machine opposite to the packaging machine.
Optionally, the controlling the unpacking of the packing machine according to the unpacking forbidding signal comprises: and controlling the packaging machine to perform the unpacking again at an unpacking position and to send a unpacking stop signal to the downstream packaging machine opposite to the packaging machine in case of receiving the unpacking prohibition signal from the downstream packaging machine opposite to the packaging machine and the unpacking stop signal from the upstream packaging machine opposite to the packaging machine.
Optionally, the controlling the unpacking of the packing machine according to the unpacking forbidding signal comprises: when the packaging machine receives a stop unloading signal from an upstream packaging machine opposite to the packaging machine and the packaging machine sends an unloading prohibition signal, the packaging machine is controlled to unload the packages under the condition that a package unloading position exists.
Through the technical scheme, the total time of the packages unloaded by the upstream packaging machine to reach the packaging machine is calculated according to the package unloading signal, and the package unloading of the packaging machine is controlled according to the calculated total time, so that the problems of overlapping and splicing of the packages when a plurality of packaging machines work cooperatively can be effectively controlled and avoided, and the problem of uneven productivity when the downstream packaging machine waits for a long time can be effectively avoided.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of a packaging machine system provided by the prior art;
fig. 2 is a block diagram of a control apparatus of a packing machine provided by the present invention;
FIG. 3 is a block diagram of a control system for a packaging machine provided by the present invention;
fig. 4 is a flow chart of a control method of the packing machine provided by the present invention;
FIG. 5 is a flow chart of the control device for controlling unpacking according to the present invention;
FIG. 6 is a block diagram of another wrapper control system provided by the present invention;
FIG. 7 is a flow chart of a let-packet control strategy provided by the present invention; and
fig. 8 is a flow chart of another method of controlling a packing machine according to the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Fig. 2 is a block diagram of the control device 10 of the packaging machine according to the present invention, wherein a transfer mechanism has a plurality of packaging machines, each of which includes the control device 10 of the packaging machine, and as shown in fig. 2, the control device 10 of the packaging machine includes a receiving device 101 and a control device 102, the receiving device 101 being adapted to receive a discharge signal from an upstream packaging machine with respect to the packaging machine; the control device 102 is used for calculating the total time of the package corresponding to the unpacking signal reaching the packing machine when the unpacking signal is received, and controlling the unpacking of the packing machine according to the calculated total time.
The transfer mechanism is a belt conveyor generally, and can be other transfer mechanisms, and the invention is mainly explained by taking the belt conveyor as an example.
It will be readily appreciated that a plurality of packaging machines, each of which packages a product and then discharges the packaged packages onto a belt for transfer to the next process, will issue a discharge signal each time a package is discharged, and that downstream packaging machines can calculate from this discharge signal the time until all packages discharged onto the belt relative to the upstream packaging machine of the present packaging machine arrive at the present packaging machine, and that the time until a packaged package is discharged from the upstream packaging machine to the discharge opening of the present packaging machine will be referred to herein as the total time. The time of arrival of a packet at the packaging machine during its transport on the belt conveyor and not at the discharge mouth of the packaging machine varies, and the time currently remaining for a packet to arrive at the packaging machine during its travel on the belt is referred to in this description as the remaining time. For example, assuming that the arrival time at the present packaging machine is 10s, and the current arrival time at the present packaging machine after the packet has traveled forward on the belt for 4s with the running of the belt is 6s, the total time is 10s, and the remaining time is 6s, as counted from the start of the packet being unloaded from the upstream packaging machine with respect to the present packaging machine. The time for the upstream packaging machine to discharge the packet onto the belt to reach the packaging machine can be calculated according to the total time, so that the packet is discharged according to the time to avoid splicing or overlapping.
The total time can be calculated according to the time of receiving the unpacking signal and the belt speed of the belt conveyor. The time difference between the upstream packaging machine sending the unpacking signal and the local packaging machine receiving the unpacking signal is ignored.
Further, the above-described control of the unpacking of the present packing machine according to the calculated total time includes: obtaining the residual time of the package reaching the packaging machine according to the total time; and when the remaining time is at the limit value, the packaging machine is prohibited from unloading. Each packaging machine should have a timer, and the counting is started after the total time is calculated, and in order to simplify the process, subtraction counting can be adopted, and the counted time in the timer is the remaining time.
It will be understood by those skilled in the art that the subtraction can be continued after the data in the subtraction timer is reduced to zero, and the data obtained by the subtraction is negative after zero, for example, taking integer counting as an example, assuming that the initial value is 5s, 4s, 3s, 2s, 1s, 0s, -1s, -2s, -3s, etc. are obtained after the subtraction timing. In general, when the count time of the subtraction timer for a pack is 0s, the pack is just at the discharge port of the present packaging machine, and the remaining time described above may be a positive number (e.g., 3s) or a negative number (e.g., -2 s).
The limit value is a time range in which, if the present packaging machine performs a bag-discharging operation when the remaining time counted by the subtraction timer for a bag of the present packaging machine is at the limit value, the discharged bag is overlapped or pieced with a bag discharged on the belt from an upstream packaging machine opposite to the present packaging machine. In order to ensure that no pack stacking or pack splicing occurs, the packaging machine needs to be prohibited from unloading when the timing time of the timer of the packaging machine is within a limit value. For example, if the limit value is 2s to-2 s, the control device 102 prohibits the packaging machine from unpacking when the counted time of the packaging machine for one package is in the time range of 2s to-2 s.
On the other hand, the timer may start the addition timing when the subtraction timing reaches 0s, for example, assuming that the initial value is 5s and the counting time is 5s, the counting time is 4s, 3s, 2s, 1s, 0s, 1s, 2s, 3s, and the like, and the unpacking of the present packing machine is controlled based on the calculated total time, including: the timing is started when the package arrives at the packaging machine, and the packaging machine is forbidden to unload the package when the timing time is at a limit value. Similarly, if the limit value is in the time range, for example, if the limit value is 0s to 2s, the control device 102 prohibits the packaging machine from unpacking when the timing time of the packaging machine for one packet is in the time range of 0s to 2s, specifically, the control device 102 prohibits the packaging machine from unpacking when the packaging machine counts the time of the subtraction timing of 2s to 0s and the addition timing of 0s to 2 s.
The communication between the various packaging machines may be via a bus, in which case, when a packaging machine sends out a depacketizing signal, the depacketizing signal contains information about the respective packaging machine, for example which packaging machine (e.g. packaging machine No. 3) is, so that the other packaging machines know whether the packaging machine is an upstream packaging machine or a downstream packaging machine with respect to the present packaging machine. For example, a signal list may be provided and the receiving device 101 in each packaging machine may obtain the required signal, e.g. the receiving device 101 only needs to receive a depacketizing signal from an upstream packaging machine relative to the present packaging machine without knowing the depacketizing signal of a downstream packaging machine relative to the present packaging machine, and the receiving device 101 may read the corresponding signal in the signal list accordingly. When the number of the packing machines corresponding to one belt conveyor is small, one-to-one communication can be carried out point to point through I/O.
Fig. 3 is a block diagram of a control system of a packing machine provided by the present invention, which includes the above-described packing machine control apparatus 10 and the detecting device 20, as shown in fig. 3, the detecting device 20 being for detecting a depacketization of the packing machine to issue a depacketization signal.
The detecting device 20 can be a photoelectric sensor, an impact sensor, a magnetic induction sensor, etc., and different types of sensors can be used corresponding to different unpacking manners, and it should be understood by those skilled in the art that the position of the detecting device 20 is different according to the unpacking manners of the packing machine, and the following mainly describes three detecting devices 20 for three unpacking manners: the first bag unloading mode is to unload the bag onto the belt through a chute, and the detection device 20 can be arranged on a bag outlet of the chute in the bag unloading mode; the second way of unloading the pack is to turn the pack onto the belt through a turning plate, and the detection device 20 can be arranged above the turning plate in the unloading way; a third way of unloading the packs is to unload the packs onto the belt by means of a robot, in which the detection means 20 can be arranged on the revolving part of the robot so as to be accessible when the robot is revolving for the unpacking operation. The position where the detecting device 20 is installed is not limited to this, and may be any position where the unpacking operation can be recognized, and may be set by those skilled in the art according to the actual situation.
Correspondingly, the invention also provides engineering machinery comprising the packaging machine control system.
Fig. 4 is a flowchart of a control method of a packing machine according to the present invention, as shown in fig. 4, the method including:
in step 401, a packet discharge signal from an upstream packaging machine is received.
And 402, calculating the total time of the packet corresponding to the unpacking signal reaching the packaging machine when the unpacking signal is received.
And step 403, controlling the unpacking of the packing machine according to the calculated total time.
Fig. 5 is a flowchart of the control device controlling unpacking according to the present invention, and as shown in fig. 5, the flowchart includes:
In step 502, the timer performs timing, which may be subtraction timing only or may be a combination of subtraction timing and addition timing, and specific details are described above and are not described herein.
And step 504, unpacking.
It should be noted that the specific details and advantages of the control method of the packaging machine provided by the present invention are similar to those of the control device of the packaging machine provided by the present invention, and are not described herein again.
Since one belt conveyor corresponds to a plurality of packing machines, when the packing machine located at the upstream of the belt conveyor unloads packs frequently, the packing machine located at the downstream of the belt conveyor may not unload packs because of no pack unloading position. In connection with the above description, assuming that the limit value is-2 s, the distance traveled by the belt 4s is one unpacking bit, i.e., the distance traveled by the bag 4s is one unpacking bit.
The present invention also provides a further packaging machine control apparatus which is similar in construction to the packaging machine control apparatus shown in fig. 2 and thus can be described with reference to fig. 2, the receiving means 101 and the control means 102 of the packaging machine control apparatus 10 described in fig. 2 being further operable to: receiving means 101 for receiving a discharge inhibiting signal from a downstream packaging machine relative to the present packaging machine; the control device 102 is used for controlling the unpacking of the packing machine according to the unpacking forbidding signal.
In the case that the receiving device 101 receives the unpacking forbidding signal, the control device 102 determines whether the packaging machine is unpacking (specifically described below) according to the unpacking forbidding signal, that is, whether the packaging machine needs to be unpacked, and in the case that the receiving device 101 does not receive the unpacking forbidding signal, the control device 102 controls the packaging machine to normally unpack.
The no-unload signal is a signal issued by a downstream packaging machine with respect to the present packaging machine in the case where the downstream packaging machine is ready to unload a package but cannot unload a package because of the absence of a unload position. Each packaging machine upstream of a packaging machine receives the unpacking inhibiting signal after the packaging machine sends the unpacking inhibiting signal (actually, each packaging machine downstream of the packaging machine can also receive the unpacking inhibiting signal but discards or does not process the unpacking inhibiting signal because of independence of the packaging machine), and each packaging machine upstream carries out subsequent operations after receiving the unpacking inhibiting signal, and specifically, the unpacking of the packaging machine is controlled according to the unpacking inhibiting signal, and the unpacking inhibiting signal comprises the following steps: and under the condition that the receiving device 101 receives the unpacking inhibiting signal and the number of the continuous packages at the upstream of the packaging machine is less than a first preset number, controlling the packaging machine to carry out unpacking again at an unpacking position and sending a unpacking stopping signal to a downstream packaging machine relative to the packaging machine.
The self-checking method is to check whether the number of continuous packages at the upstream of the packaging machine is smaller than a first preset number, if the number of continuous packages at the upstream of the packaging machine is smaller than the first preset number, the packaging machine unloads packages at an interval, otherwise, the packaging machine does not need to let the packages. The first predetermined number may be set by a person skilled in the art according to actual conditions, for example, the first predetermined number may be set to 2, that is, in the case where the present packing machine receives a discharge prohibition signal from a downstream packing machine with respect to the present packing machine and the number of consecutive packs upstream of the present packing machine is 1 or 0, the present packing machine performs discharge at a discharge position interval, that is, in the case where the limit value is-2 s to 2s, performs discharge at a 4s interval with the previous pack passing through the present packing machine.
For example, if there are 3 consecutive packets, which are sequentially the 1 st consecutive packet, the 2 nd consecutive packet, and the 3 rd consecutive packet, the distance between the 1 st consecutive packet and the 2 nd consecutive packet and the distance between the 2 nd consecutive packet and the 3 rd consecutive packet are both smaller than the distance of one depacketizing position.
The stop discharge signal is also sent after the present machine has discharged the pack to instruct the downstream machine to discharge the pack (i.e., every other discharge station for further discharge), and in fact, the upstream machine with respect to the present machine will also receive the stop discharge signal, but will discard or not process it independently of itself. The method comprises the following steps that a packing machine which sends a packing forbidding signal and a packing machine which sends a stopping signal receive a packing forbidding signal and a stopping signal, in order to prevent the packing machine which sends the stopping signal from taking up the packing position after the packing machine gives a package, and the packing machine which sends the stopping signal comprises the following steps: and controlling the packaging machine to perform the unpacking again at an unpacking position and to send a unpacking stop signal to the downstream packaging machine opposite to the packaging machine in case of receiving the unpacking prohibition signal from the downstream packaging machine opposite to the packaging machine and the unpacking stop signal from the upstream packaging machine opposite to the packaging machine.
In general, when one packing machine is prohibited from discharging and issues a discharge prohibition signal, the upstream packing machine checks the number of consecutive packages upstream of the upstream packing machine one by one, for example, 5 upstream packing machines with respect to the present packing machine (0 th packing machine), and the sequence from downstream to upstream is 1, 2, 3, 4, and 5, respectively, that is, the 1 st packing machine is the closest packing machine to the present packing machine among the upstream packing machines with respect to the present packing machine, the 2 nd packing machine is the closest packing machine to the 1 st packing machine among the upstream packing machines with respect to the 1 st packing machine, and so on, after the 0 th packing machine issues the discharge prohibition signal, the 1 st packing machine first checks the number of consecutive packages upstream thereof, for example, 6 consecutive packages, and does not satisfy a package permission condition (a package strip is made to be a consecutive package number of packages of 0 or 1), so that no package is permitted, and then the 2 nd packing machine checks the number of consecutive packages upstream thereof, The 3 rd packaging machine checks the number of the continuous packages at the upstream of the 3 rd packaging machine until the number of the continuous packages at the upstream of one packaging machine is 0 or 1, for example, the 4 th packaging machine is a 4 th packaging machine, then the 4 th packaging machine unloads the packages again at intervals, and sends out a package unloading stopping signal, and the 1 st packaging machine, the 2 nd packaging machine and the 3 rd packaging machine unload the packages again at intervals of a package unloading position according to the package unloading stopping signal and a package unloading prohibiting signal of the 0 th packaging machine so as to ensure that the package unloading position given out by the 4 th packaging machine cannot be occupied by the 1 st packaging machine, the 2 nd packaging machine and the 3 rd packaging machine.
Further, the control of the unpacking by the present packing machine based on the unpacking inhibiting signal includes: when the packaging machine receives a stop unloading signal from an upstream packaging machine opposite to the packaging machine and the packaging machine sends an unloading prohibition signal, the packaging machine is controlled to unload the packages under the condition that a package unloading position exists. That is, when the 0 th packing machine which has issued the unpacking inhibiting signal receives the unpacking stopping signal, the unpacking can be performed in the case of the unpacking position.
Fig. 6 is a block diagram of another wrapping machine control system provided by the present invention, as shown in fig. 6, which includes the wrapping machine control apparatus 10 and a transmitting device 30 for transmitting a discharge inhibiting signal to an upstream wrapping machine with respect to the present wrapping machine in the case where the present wrapping machine is ready to discharge the wrapping machine and the number of consecutive wrapping machines upstream of the present wrapping machine is greater than a second predetermined number.
The issue of the signal inhibiting unpacking as soon as a packing machine is unable to unpack would certainly cause a disruption of the entire production line, so that the issue of the signal inhibiting unpacking is limited to the case where the number of consecutive packs upstream of a packing machine is greater than a second predetermined number, which may be 7 or 8, for example, and may be set by the person skilled in the art according to the actual circumstances.
Correspondingly, the invention also provides a working machine which comprises another packaging machine control system described in the figure 6.
Fig. 7 is a flowchart of a packet control policy provided by the present invention, and as shown in fig. 7, the flowchart includes:
in step 701, it is determined whether a packet unloading prohibition signal is received from a downstream packaging machine corresponding to the present packaging machine, and if the determination result is yes, step 702 is executed, and if the determination result is no, step 704 is executed.
Step 702, determining whether the number of consecutive packets on the upstream of the present packaging machine is less than 2, where the first predetermined number is set to 2, if yes, performing step 705, and if no, performing step 703.
In step 703, it is determined whether a stop unpacking signal is received from an upstream packing machine with respect to the present packing machine, and if the determination result is yes, step 705 is executed, and if the determination result is no, step 704 is executed.
And step 704, unloading the package normally.
Step 705, unpacking every other unpacking position, namely letting the package.
Fig. 8 is a flowchart of another control method of a packing machine according to the present invention, as shown in fig. 8, the method including:
step 801 receives a disable unpacking signal from a downstream packaging machine relative to the present packaging machine.
And step 802, controlling the unpacking of the packing machine according to the unpacking forbidding signal.
It should be noted that the specific details and benefits of the alternative wrapper control method shown in fig. 8 provided by the present invention are similar to those of the alternative wrapper control apparatus provided by the present invention and will not be described herein.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (8)
1. The utility model provides a packagine machine controlgear, one of them belt feeder has a plurality of packagine machine correspondingly, and each packagine machine all includes packagine machine controlgear, its characterized in that, this equipment includes:
receiving means for receiving a discharge inhibiting signal from a downstream packaging machine relative to the present packaging machine; and
the control device is used for controlling the unpacking of the packing machine according to the unpacking forbidding signal and comprises:
and under the condition that the receiving device receives a unpacking forbidding signal from a downstream packaging machine opposite to the packaging machine and the number of continuous packages at the upstream of the packaging machine is less than a first preset number, controlling the packaging machine to separate one unpacking position for unpacking again and sending a unpacking stopping signal to the downstream packaging machine opposite to the packaging machine.
2. The apparatus of claim 1, wherein the controlling of the depacketizing of the present packaging machine in accordance with the depacketizing inhibiting signal comprises:
and under the condition that the receiving device receives a unpacking forbidding signal from a downstream packaging machine opposite to the packaging machine and a unpacking stopping signal from an upstream packaging machine opposite to the packaging machine, controlling the packaging machine to separate one unpacking position for unpacking again and sending a unpacking stopping signal to the downstream packaging machine opposite to the packaging machine.
3. The apparatus according to claim 1 or 2, wherein controlling the unpacking by the present packing machine based on the unpacking inhibiting signal comprises:
and under the condition that the receiving device receives a stop unpacking signal from an upstream packing machine opposite to the packing machine and the packing machine sends an unpacking inhibiting signal, controlling the packing machine to unpack under the condition that the unpacking position exists.
4. A packaging machine control system, characterized in that the system comprises:
a transmitting device for transmitting a discharge inhibiting signal to an upstream packaging machine relative to the packaging machine in the case where the packaging machine is ready for discharge and the number of consecutive packages upstream of the packaging machine is greater than a second predetermined number; and
the packaging machine control apparatus according to any one of claims 1 to 3.
5. A working machine, characterized by comprising a packaging machine control system according to claim 4.
6. A control method of a packing machine, wherein one belt conveyor corresponds to a plurality of packing machines, and each packing machine is controlled by the control method of the packing machine, is characterized by comprising the following steps:
receiving a discharge inhibiting signal from a downstream packaging machine relative to the present packaging machine; and
the method for controlling the unpacking of the packing machine according to the unpacking forbidding signal comprises the following steps: and under the condition that a discharge forbidding signal from a downstream packaging machine opposite to the packaging machine is received and the number of continuous packages at the upstream packaging machine is less than a first preset number, controlling the packaging machine to separate a discharge position for discharging again and sending a discharge stopping signal to the downstream packaging machine opposite to the packaging machine.
7. The method of claim 6, wherein controlling the unpacking of the present packing machine in accordance with the unpacking inhibiting signal includes:
and controlling the packaging machine to perform the unpacking again at an unpacking position and to send a unpacking stop signal to the downstream packaging machine opposite to the packaging machine in case of receiving the unpacking prohibition signal from the downstream packaging machine opposite to the packaging machine and the unpacking stop signal from the upstream packaging machine opposite to the packaging machine.
8. A method according to claim 6 or 7, wherein controlling the unpacking by the present packing machine in accordance with the unpacking inhibiting signal comprises:
when the packaging machine receives a stop unloading signal from an upstream packaging machine opposite to the packaging machine and the packaging machine sends an unloading prohibition signal, the packaging machine is controlled to unload the packages under the condition that a package unloading position exists.
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