Search

CN-121979131-A - Double-station top and bottom box production equipment control method and system

CN121979131ACN 121979131 ACN121979131 ACN 121979131ACN-121979131-A

Abstract

The invention discloses a control method and a control system for double-station top and bottom box production equipment, which relate to the technical field of packaging product processing equipment control and comprise the following steps: and establishing a dynamic occupation tracing band in a station boundary area of the double-station space box production equipment, continuously recording the entering moment, the leaving moment and the stay increment of the semi-finished product, generating a boundary occupation state string, and outputting a occupation threshold line according to the boundary occupation state string. According to the invention, flexible coordination of feeding, conveying and pressing actions is realized through dynamic occupation tracing and error frequency pulse abdication regulation and control, and the retained semi-finished product can be guided away from a boundary area by rhythms, so that blockage and overload are prevented. Through the time sequence integration of the turn-back trigger window, the dynamic peak shifting of the high-force action and the abdication process is executed, the energy transfer is balanced, the deformation of the die is avoided, and the stability and the forming precision of the equipment under continuous high-load operation are ensured.

Inventors

  • WANG CHUNBO

Assignees

  • 铭丰(广东)智能装备科技有限公司

Dates

Publication Date
20260505
Application Date
20251229

Claims (10)

  1. 1. The control method of the double-station heaven and earth box production equipment is characterized by comprising the following steps of: Establishing a dynamic occupation tracing band in a station boundary area of double-station space box production equipment, continuously recording the entering moment, the leaving moment and the stay increment of a semi-finished product, generating a boundary occupation state string, and outputting a occupation threshold line according to the boundary occupation state string; performing boundary abdication lock control on the feeding pushing instruction according to the occupation threshold line, freezing the feeding pushing instruction when the boundary occupation state string reaches the occupation threshold line, releasing an abdication gap in a frozen state, and generating a corresponding abdication gap list; Driving a front-stage conveying mechanism to execute breathing micro-concession traction according to the concession gap list, executing micro-stepback on the gray plate according to the rhythm of the concession gap list, rearranging the arrival sequence of the gray plate after the completion of the retractation, and generating a sequence position retractive mark; According to the sequence bit write-back identification, phase turn-back compression is carried out on the double-station switching sequence, the trigger point of the pressing action is aligned with the closed edge of the abdication gap, and a turn-back trigger window is output; And carrying out error frequency pulse abdication regulation and control on the station boundary area according to the foldback trigger window, sequentially carrying out alternate switching of micro-push amplitude limiting control, micro-retrace gain control and compression delay control in the foldback trigger window, and dragging the retained semi-finished product in the boundary area to leave the boundary area through rhythms.
  2. 2. The control method for a double-station space-time box production device according to claim 1, wherein the step of outputting the occupancy threshold line is as follows: Setting a monitoring interval of a dynamic occupation tracing band in a station boundary area of double-station space box production equipment, and setting the monitoring interval to cover a transition band part between adjacent stations; After recording the entering time of the semi-finished product, continuously tracking the motion state of the semi-finished product in the station boundary area, recording the leaving time when the semi-finished product leaves the station boundary area, and determining the stay increment according to the time difference between the entering time and the leaving time; After the entering time, the leaving time and the stay increment of a plurality of semi-finished products are obtained, a boundary occupying state string is formed by combining according to time sequence, and the congestion degree of a station boundary area is reflected according to the occupying state string; After the boundary occupancy state string is generated, the cumulative change in dwell delta is analyzed to output an occupancy threshold line.
  3. 3. The control method for a double-station space-time box production facility according to claim 2, wherein when the occupancy threshold line is outputted, the cumulative proportion of the stay increments is converted into threshold line information reflecting the real-time occupancy trend of the station boundary region by dynamically comparing the continuous variation trend of the stay increments in the boundary occupancy state string, and the threshold line information is outputted to the feed control unit.
  4. 4. The method for controlling a double-station heaven and earth box production device according to claim 2, wherein the step of performing boundary yielding lock control on the feeding push command according to the occupancy threshold line is as follows: After the occupation threshold line output by the dynamic occupation tracing band is obtained, taking the occupation threshold line as a dynamic boundary reference of feeding pushing, monitoring the occupation trend change of a station boundary area by a feeding control unit according to the relation between the occupation threshold line and a boundary occupation state string, and freezing a feeding pushing instruction when the occupation state reaches the occupation threshold line; After the feeding pushing instruction is frozen, the feeding control unit starts the releasing operation of the yielding clearance according to the frozen occupancy state string data, and slowly retreats the front-stage conveying mechanism in a micro intermittent mode to release the space allowance; After the releasing of the yielding gaps is completed, the feeding control unit generates a corresponding yielding gap list according to the difference value of the occupancy state strings before and after freezing; After the yielding gap list is generated, the feeding control unit dynamically preprocesses the freezing state according to the yielding gap list, releases the freezing state when the occupied state is lowered to be lower than the occupied threshold line, and resumes triggering of the feeding pushing instruction.
  5. 5. The control method for double-station heaven and earth box production equipment according to claim 4, wherein after the feed pushing command is frozen, the feed control unit performs a slow-back action in stages according to the change trend of the occupancy threshold line in the releasing process of the yielding gap, so that the released space allowance and the occupancy increment of the boundary area keep a proportional corresponding relation, and the recovery moment of the feed pushing is adjusted according to the rhythm of the yielding gap list before the freezing is released.
  6. 6. The method for controlling a double-station heaven and earth box production equipment according to claim 4, wherein the step of driving the front-stage conveying mechanism to execute the breathing micro-relief traction according to the relief clearance list comprises the following steps: after the yielding gap list is generated, the feeding control device drives the front-stage conveying mechanism to execute breathing type micro-yielding traction according to the time sequence of the yielding gap list; When the breathing type micro-relief traction is executed, the feeding control device executes micro-step withdrawal on the ash plate according to the rhythm of the relief clearance list; after the micro-step withdrawal is completed, the feeding control device rearranges the arrival sequence of the gray plate according to the position of the withdrawn gray plate; after the sequence bit rearrangement is completed, the feeding control device generates a sequence bit write-back mark according to the rearranged gray plate position.
  7. 7. The control method for a double-station heaven-earth box production device according to claim 6, wherein the step of performing phase folding compression on the double-station switching timing sequence according to the sequence bit folding identification is as follows: after a sequence bit write-back identifier generated by a breathing type micro-back traction process is obtained, the double-station control logic takes the sequence bit write-back identifier as a time reference for switching time sequence adjustment, and adjusts station switching phases according to the sequence bit write-back identifier; After determining the offset relation between the sequence bit write-back identification and the station switching phase, the double-station control logic starts the phase turn-back compression process and adjusts the station time sequence through reverse compression; After the phase foldback compression is completed, the double-station control logic uses the closed edge of the abdication gap as a key reference for time sequence alignment, and the trigger point of the pressing action is repositioned; After the pressing action trigger point and the closed edge are aligned, the double-station control logic outputs a turning trigger window to limit the execution range of the pressing action.
  8. 8. The method according to claim 7, wherein the double-station control logic dynamically adjusts the trigger time of the pressing action based on the sequence data of the sequence-bit write-back mark during the phase-turn-back compression, ensures the alignment of the start time of the pressing action and the end time of the closing edge, and outputs the turn-back trigger window after the alignment of the trigger points.
  9. 9. The control method for double-station space-earth box production equipment according to claim 8, wherein the step of performing error frequency pulse abdication control on the station boundary area according to the turn-back trigger window is as follows: after the output of the turn-back trigger window, the double-station control logic takes the time range of the turn-back trigger window as the execution period of error frequency pulse abdication regulation and control, and micro-push limiting control is applied to the front-stage conveying mechanism in the initial stage of the turn-back trigger window; after micro-pushing amplitude limiting control is completed, the double-station control logic executes micro-retraction gain control in the middle time interval of the folding trigger window, and the breathing movement rhythm of the semi-finished product is formed through reverse micro-amplitude traction; After the micro-retrace gain control is completed, the double-station control logic executes the pressing delay control in the rear time interval of the retrace trigger window; and when the turn-back trigger window is finished, the double-station control logic performs time sequence merging on execution results of micro-push limiting control, micro-back gain control and pressing delay control.
  10. 10. A double-station heaven and earth box production equipment control system for realizing the double-station heaven and earth box production equipment control method according to any one of the claims 1-9, which is characterized by comprising a dynamic occupation monitoring module, a boundary yielding lock control module, a breathing yielding traction module, a phase returning voltage control module and an error frequency yielding regulation and control module: The dynamic occupation monitoring module establishes a dynamic occupation tracing band in a station boundary area of double-station space box production equipment, continuously records the entering time, the leaving time and the stay increment of the semi-finished product, generates a boundary occupation state string, and outputs a occupation threshold line according to the boundary occupation state string; the boundary abdication lock control module is used for carrying out boundary abdication lock control on the feeding pushing instruction according to the occupation threshold line, freezing the feeding pushing instruction when the boundary occupation state string reaches the occupation threshold line, releasing an abdication gap in a freezing state, and generating a corresponding abdication gap list; The respiratory yielding traction module drives the front-stage conveying mechanism to execute respiratory yielding traction according to the yielding clearance list, performs micro-step retraction on the gray plate according to the rhythm of the yielding clearance list, rearranges the arrival sequence of the gray plate after the retraction is completed, and generates a sequence writing mark; The phase foldback voltage control module performs phase foldback compression on the double-station switching time sequence according to the sequence bit foldback writing identification, aligns a trigger point of the pressing action with a closed edge of the abdication gap, and outputs a foldback trigger window; The wrong frequency yielding regulation and control module carries out wrong frequency pulse yielding regulation and control on the station boundary area according to the turning-back trigger window, and alternately switches micro-pushing amplitude limiting control, micro-withdrawing gain control and pressing delay control are sequentially carried out in the turning-back trigger window, so that the remained semi-finished product is pulled out of the boundary area through rhythms in the boundary area.

Description

Double-station top and bottom box production equipment control method and system Technical Field The invention relates to the technical field of control of packaging product processing equipment, in particular to a control method and a control system of double-station top and bottom box production equipment. Background The top-bottom box is a common top-quality packing box structure, and consists of an upper part and a lower part, wherein the upper cover is called a top box, the lower cover is called a bottom box, and a closed box body is formed by upper and lower matching and is commonly used for Gao Duanli boxes, electronic product boxes and the like. The control of the double-station top and bottom box production equipment is based on the centralized scheduling logic of an industrial control system, and the time-sharing parallelism and beat coordination of procedures such as gray board slotting and folding, facial tissue laminating, positioning and laminating, forming box discharging and the like are realized by accurately controlling two mutually independent and cooperatively working processing stations. The industrial control system bears the core tasks of signal acquisition, action instruction distribution, feedback management execution and the like in the process, so that the movement mechanism, the conveying mechanism and the pasting unit realize synchronous operation under a unified control frame, and therefore, when the upper station performs the process of the top box, the lower station can simultaneously complete the formation of the ground box, and continuous and high-efficiency control of equipment operation are realized through signal interaction and beat optimization. The prior art has the following defects: In the control process of double-station top and bottom box production equipment in the prior art, when the production takt is dynamically adjusted according to the process state, the station switching time sequence, the pushing speed and the in-place judgment have transient changes, and the unplanned temporary stop of a single top and bottom box semi-finished product in the boundary area of the adjacent stations is easy to occur. Because the residence time is short and does not exceed the anomaly identification threshold preset by the control system, the control logic in the prior art generally still determines the station boundary region as a feedable state, and new gray plates continue to be conveyed into the region in a subsequent operation period, so that overlapping contact with retained semi-finished products occurs in a limited space, and a stacking compaction state is gradually formed under the action of continuous pushing and forming actions. Along with the continuous accumulation of the compaction degree of the overlapped materials, abnormal stress is continuously transmitted to the forming die and the guiding structure thereof, and the local plastic deformation or the reference position deviation of the die are easily caused, so that the forming precision of equipment is irreversibly reduced, even the die is permanently damaged, and the long-term stable operation of the production equipment of the top and bottom boxes is seriously influenced. The above information disclosed in the background section is only for enhancement of understanding of the background of the disclosure and therefore it may include information that does not form the prior art that is already known to a person of ordinary skill in the art. Disclosure of Invention The invention aims to provide a control method and a control system for double-station top and bottom box production equipment, which are used for solving the problems in the background technology. In order to achieve the purpose, the invention provides the following technical scheme that the control method of the double-station heaven-earth box production equipment comprises the following steps: Establishing a dynamic occupation tracing band in a station boundary area of double-station space box production equipment, continuously recording the entering moment, the leaving moment and the stay increment of a semi-finished product, generating a boundary occupation state string, and outputting a occupation threshold line according to the boundary occupation state string; performing boundary abdication lock control on the feeding pushing instruction according to the occupation threshold line, freezing the feeding pushing instruction when the boundary occupation state string reaches the occupation threshold line, releasing an abdication gap in a frozen state, and generating a corresponding abdication gap list; Driving a front-stage conveying mechanism to execute breathing micro-concession traction according to the concession gap list, executing micro-stepback on the gray plate according to the rhythm of the concession gap list, rearranging the arrival sequence of the gray plate after the completion of the retractation, and generating a sequence positi