A control method and system for a strapping line live roller chain machine

Abstract

The application discloses a kind of packing line movable plate chain machine control method and system, the method includes: detecting production chain plate and the material information on storage chain plate, obtains material position and transmission speed;Configuration movable plate chain machine, according to the material position on the production chain and transmission speed Current control mode is judged;According to the current control mode, the conveying motor on the movable plate chain machine is driven to move at first speed, and the material is moved to first preset position;When the material moves to the first preset position, the conveying motor on the corresponding movable plate chain machine is driven to perform deceleration motion at reverse preset second acceleration, until material runs to movable plate chain machine outlet end and reaches second speed.

Description

Technical Field

[0001] This invention relates to the field of packaging production line technology, and in particular to a control method and system for a movable plate chain machine in a packaging line. Background Technology

[0002] In current control solutions for movable chain conveyors in packaging lines, the conveyor uses a fixed-speed motor for control. When moving between the production line and the storage line, the storage line is typically selected manually, using limit switches to determine if the selected storage line has been reached. Upon reaching the storage line, the location for storage is then manually confirmed. Therefore, this technical solution has the following problems: 1. The movable chain conveyor, when loading materials, has significant inertia, leading to inaccurate stopping positions and requiring repeated manual adjustments; 2. To prevent the movable trolley from overshooting its stop position, a low-speed forward movement with a motor brake is often used, limiting the trolley's efficiency; 3. Synchronization between the trolley's conveyor chain and the storage line's conveyor chain requires manual selection and confirmation, limiting the overall production efficiency of the line. Summary of the Invention

[0003] One objective of this invention is to provide a control method and system for a movable plate chain machine in a packaging line. The method and system implement alternating high-speed and low-speed transport modes for the movable plate chain machine for different storage and retrieval modes, and finally effectively balance the materials on the movable plate chain machine without reducing the transport efficiency of the movable plate chain machine, so that the corresponding materials can effectively overcome inertia and maintain an accurate stopping position.

[0004] Another objective of this invention is to provide a control method and system for a packing line movable plate chain machine. The method and system utilize detection switches on the production line or storage line to determine the transport position and speed of materials, and combine this with the motor control of the plate chain machine by a host computer to achieve automatic adjustment of the automated packing and storage modes on the production line and storage line, thereby improving the automation level of the packing line.

[0005] Another objective of this invention is to provide a control method and system for a movable plate chain machine in a packaging line. The method and system detect the position and running speed of the plate chain machine in the production line storage line and the movable plate chain machine in real time. Based on the position of the movable plate chain machine, the system determines that the movable plate chain machine will perform synchronous control operations after connecting to the corresponding packaging line plate chain machine. This allows for the synchronous execution of subsequent operations on the corresponding storage line, thereby improving the efficiency of the entire packaging line.

[0006] To achieve at least one of the above-mentioned objectives, the present invention further provides a control method for a packing line movable plate chain machine, the method comprising:

[0007] Detect material information on the production and storage chain, and obtain material location and transmission speed;

[0008] Configure a movable plate chain machine to determine the current control mode based on the material position and conveying speed on the production chain;

[0009] According to the current control mode, the conveyor motor on the movable plate chain machine is driven to move at a first speed, and the material is moved to a first preset position;

[0010] When the material moves to the first preset position, the conveyor motor on the corresponding movable chain machine is driven to perform a deceleration motion with a second preset acceleration in the opposite direction until the material reaches the second speed at the outlet end of the movable chain machine.

[0011] According to a preferred embodiment of the present invention, the control mode includes a package retrieval mode and a package storage mode. When the material detection result on the movable plate chain machine is empty, and there is corresponding material on the plate chain machine of the corresponding production line, the current movable plate chain machine is set to the package retrieval mode, and the moving motor of the movable plate chain machine is driven at the same time, so that the inlet of the movable plate chain machine moves to the outlet of the production line with material.

[0012] According to another preferred embodiment of the present invention, when the material detection result on the movable plate chain machine is not empty, and no material is detected on the plate chain machine corresponding to the storage line, the movable plate chain machine is set to the storage mode, and the moving motor of the movable plate chain machine is driven so that the outlet of the movable plate chain machine moves to the inlet of the corresponding storage line plate chain machine.

[0013] According to another preferred embodiment of the present invention, the straight-line path distance from the preset position of the movable chain conveyor to the inlet of the movable chain conveyor is S1, the first velocity is V1, the preset second acceleration is a2, wherein the total length of the movable chain conveyor is S, and the straight-line path distance from the corresponding preset position to the outlet of the movable chain conveyor is S2, where S = S1 + S2, and the time for the material to move from the inlet of the movable chain conveyor to the preset position is T1, the time for the material to move from the preset position to the outlet of the movable chain conveyor is T2, and the second velocity is V2, where V 1* t2+0.5*a2*(T2) 2 ≤S2.

[0014] According to another preferred embodiment of the present invention, wherein V1-a2*T2=V2, and the second speed V2 is less than or equal to the transmission speed V3 of the corresponding plate chain machine on the storage line, when the detection switch at the inlet position of the corresponding plate chain machine on the storage line detects the presence of material, it sends its own material detection signal to the host computer. After receiving the first detection signal, the host computer simultaneously sends synchronization control signals to the corresponding plate chain machine and the movable plate chain machine on the storage line, and the corresponding plate chain machine and the movable plate chain machine on the storage line perform synchronous operation.

[0015] According to another preferred embodiment of the present invention, the straight-line path distance from the preset position of the movable plate chain to the inlet of the movable plate chain machine is S1, the first speed is V1, and the inlet of the movable plate chain machine is connected to the outlet of the plate chain machine corresponding to the production line. The transmission speed of the plate chain machine corresponding to the production line is V0, V0 is the initial speed of the movable plate chain, and V0 < V1; a first acceleration a1 is preset in the same direction as the transmission direction of the movable plate chain machine, wherein S1 = V 0* T1+0.5*a1(T1) 2 And V0 + a1 * T1 = V1.

[0016] According to another preferred embodiment of the present invention, the straight-line path distance from the preset position of the movable plate chain to the inlet of the movable plate chain machine is S1, the first speed is V1, and the inlet of the movable plate chain machine is connected to the corresponding plate chain machine outlet of the production line. The initial transmission speed at the inlet of the movable plate chain machine is 0. When the inlet of the movable plate chain machine detects the corresponding material, it controls the transmission motor of the movable plate chain machine to control the material to move to a1*T1=V1 with a preset first acceleration a1 in the same direction as the transmission direction of the movable plate chain machine. At this time, 0.5*a1(T1) 2 =S1.

[0017] According to another preferred embodiment of the present invention, the control mode includes an energy-saving mode, wherein when no material information is detected on the corresponding plate chain machine on the production line, and no corresponding material information is detected on the plate chain machines of the production line itself and the storage line, the plate chain machines of the production line, the storage line, and the production line are controlled to stop running.

[0018] To achieve at least one of the above-mentioned objectives, the present invention provides a control system for a packing line movable plate chain machine, wherein the system executes the above-mentioned control method for a packing line movable plate chain machine.

[0019] The present invention further provides a computer-readable storage medium storing a computer program, the computer program being executed by a processor as described above in the method for controlling a packing line movable plate chain machine. Attached Figure Description

[0020] Figure 1 The diagram shown is a schematic flowchart of a control method for a packing line movable plate chain machine according to the present invention.

[0021] Figure 2 The diagram shown is a schematic representation of the scene structure controlled by the movable plate chain machine of the packaging line of the present invention.

[0022] Among them, production line-A, production line-B, movable plate chain machine-10, conveyor motor-11, moving motor-12, detection switch-13, position detection device-14, production line plate chain machine-20, storage line plate chain machine-30, storage line-C, and preset position-P. Detailed Implementation

[0023] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0024] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0025] Please combine Figures 1-2 This invention provides a control method and system for a movable plate chain machine in a packaging line. The system mainly includes: a host computer, a movable plate chain machine, a plate chain machine corresponding to the production line, and a plate chain machine corresponding to the storage line. Multiple plate chain machines can be configured for each production line and storage line. Each plate chain machine is equipped with a detection switch and a plate chain conveyor motor. The detection switch detects material information at the current position, including the material's position and speed. The plate chain conveyor motor is installed below the plate chain belt to provide power for material transport. The movable plate chain machine also includes a plate chain moving motor, which can control the entire movable plate chain to move laterally or longitudinally, allowing the movable plate chain machine to interface with plate chain machines on the corresponding production or storage line. The host computer communicates with the plate chain conveyor motor and the plate chain moving motor to control their operating status.

[0026] Specifically, this invention detects the material status on the corresponding plate chain machine, movable plate chain machine, and storage line plate chain machine of the production line, and executes different modes according to the material status on different plate chain machines. Please refer to... Figure 2To address the problems of inefficient transmission and material inertia during the operation of the movable plate chain conveyor, the present invention provides the following technical solution:

[0027] This invention employs high-frequency and low-frequency variable-frequency drives to propel the corresponding moving plate chain conveyor motor, enabling the moving plate chain to perform variable-speed transmission of received materials. A lower speed is required at the end of the moving plate chain to prevent significant deviations in the material's position on the storage line due to its own inertia. In a preferred embodiment, a first speed V1 is set, corresponding to an initial transmission speed V0 on the production line. In this preferred embodiment, the initial transmission speed V0 and the first speed V1 are relatively high and close. A preset position P is configured on the moving plate chain, with a straight-line distance S1 between the preset position P and the entrance of the moving plate chain, and a corresponding straight-line distance S2 between the preset position P and the exit of the moving plate chain. The total length of the moving plate chain is S = S1 + S2. A detection switch or position detection device is provided at the entrance of the storage line plate chain. The detection switch is used to detect whether material has passed through, and the position detection device can be installed at, but is not limited to, the upper and lower inner edges of the end of the production line plate chain and the upper and lower inner edges of the starting position of the storage plate chain. The detection switch or position detection device may include, but is not limited to, laser or infrared detectors, for detecting whether the material has passed through the position. When the detection switch at the entrance of the movable plate chain machine detects the presence of corresponding material, the conveyor motor of the movable plate chain machine starts. This start command can be configured by a host computer. The conveyor motor of the movable plate chain operates at a conveying speed of V1, and detection switches at different positions on the movable plate chain detect the material information at the current position. In this invention, the detection switch is configured at a preset position. When the material moves to the corresponding detection switch, the corresponding material can be detected at the material detection switch at the preset position. When the material is detected at the preset position, the host computer sends a deceleration signal to the conveyor motor of the movable plate chain machine, wherein the deceleration signal is used to control the conveying speed of the movable plate chain machine. In the preferred embodiment described above, the initial speed of the movable chain conveyor is a first speed V1. When the movable chain conveyor receives a deceleration signal, it decelerates with a second acceleration a2 in the opposite direction to its transmission speed until the material on the movable chain conveyor reaches a preset second speed V2 when it approaches the end of the conveyor, where the second speed V2 < the first speed V1. The time it takes for the material to travel from the inlet position to the preset position is defined as T1, and the preset time for the material to travel from the preset position to the outlet position is defined as T2. The total running time on the movable chain conveyor is T = T1 + T2. When the material travels from the preset position to the outlet position, the distance traveled by the material satisfies the following formula: V1 * T2 + 0.5 * a2 * (T2) 2≤S2, meaning that the material will decelerate to a required second speed before the exit point at the end of the movable plate chain. In one preferred embodiment of the invention, the second speed of the movable plate chain is the same as the transmission speed of the storage plate chain, allowing the movable plate chain to operate synchronously with the corresponding storage line plate chain.

[0028] It should be noted that, since the entire movable plate chain machine needs to be moved to the entrance of the corresponding storage line plate chain machine, the movable plate chain machine's own moving motor can move the entire movable plate chain machine to the corresponding position of the storage line plate chain machine, so that the end outlet of the movable plate chain machine corresponds to the opening of the plate chain machine on the storage line. In one preferred embodiment of the present invention, the production line and the storage line are located on the same straight line, and the movable plate chain machine is located between the production line and the storage line, so that the movable plate chain machine moves linearly between the plate chain machines corresponding to the movable production line and the storage line via its moving motor. In one preferred embodiment of the present invention, the movable plate chain machine is located beside the production line and the storage line, and different production lines correspond to one storage line. Therefore, the moving motor of the movable plate chain machine needs to drive the entire movable plate chain machine to move laterally along different production lines to the opening of the plate chain machine of the storage line corresponding to another production line, thereby realizing rapid allocation between different production lines. It should be noted that the time for the moving motor to move laterally or longitudinally in the present invention is T3, where T3≤T.

[0029] In another preferred embodiment of the present invention, since a frequency conversion control method is required, this embodiment is configured such that the first speed V1 is greater than the initial speed V0, so that the material on the movable plate chain experiences a first acceleration a1, including but not limited to static friction, along the conveying direction of the movable production line. Therefore, when the material moves to the preset position within time T1, such that S1 = V 0* T1+0.5*a1(T1) 2 And V0 + a1 * T1 = V1, therefore, when the material gradually accelerates from V0 to V1 with an acceleration of a1, the material is no longer accelerated, and a deceleration operation is further performed. In some other feasible embodiments of the present invention, S1 < V 0* T1+0.5*a1(T1) 2At this point, the material has already reached the first speed V1 before T1. Before the preset position P, the material is accelerated to the specified first speed V1 and moves to the preset position P at the specified first speed V1; then, a deceleration operation is performed at the preset position. In this invention, in the path between the preset position at a distance S2 and the exit of the movable chain conveyor, a deceleration movement with a second acceleration a2 is performed in the reverse direction along the conveying direction of the movable chain conveyor. At this time, the preset second speed is defined as V2, where V2 < V1, and V2 = a. 2* T2+V1, at this point, V1*T2+0.5*a2*(T2) must be satisfied. 2 ≤S2, that is, the preset second speed V2 has been reached before the preset position. At this time, the total material transportation time T on the moving chain plate is T1+T2. The material can be decelerated to the preset second speed V2 before the end of the moving chain plate.

[0030] In another preferred embodiment of the present invention, the movable plate chain conveyor detects material with a velocity close to 0 at the inlet using the position detection device. At this time, the movable plate chain conveyor needs to increase its driving frequency, using the static or dynamic friction of the conveyor belt to drive the material to accelerate along the conveying direction of the movable plate chain conveyor, so that the material reaches a preset first velocity V1 at or before the preset position P. When the time for the material to reach the preset position is T1, and the material reaches the first velocity V1 at the preset position, then S1 = 0.5 * a1(T1). 2 Of course, in some other preferred embodiments of the present invention, 0.5*a1(T1) 2 <S1, and the material is accelerated to the first speed V1 before the preset position.

[0031] It is worth mentioning that the host computer in this invention monitors the material status on the movable chain conveyor, the chain conveyor corresponding to the storage line, and the chain conveyor corresponding to the production line in real time, and executes modes including bag retrieval, bag storage, and energy saving, thereby improving the automation effect of the packaging line. The movable chain conveyor in the bag retrieval mode executes as follows: when the material detection result on the movable chain conveyor is empty, and there is corresponding material on the chain conveyor of the corresponding production line, the movable chain conveyor is set to bag retrieval mode, and its moving motor is simultaneously driven, causing the inlet of the movable chain conveyor to move to the outlet of the production line with material. The movable chain conveyor in the bag storage mode executes as follows: when the material detection result on the movable chain conveyor is not empty, and there is no material detected on the chain conveyor corresponding to the storage line, the movable chain conveyor is set to bag storage mode, and its moving motor is driven, causing the outlet of the movable chain conveyor to move to the inlet of the corresponding storage line chain conveyor. The energy-saving mode is as follows: when no material is detected on the movable plate chain machine, the corresponding plate chain machine of the storage chain, and the corresponding plate chain machine of the production line, the operation of the movable plate chain machine is stopped.

[0032] It should be noted that in this invention, when the movable conveyor belt moves to the corresponding conveyor belt of the storage line, it sends its own material detection signal to the host computer. After receiving the first detection signal, the host computer simultaneously sends synchronization control signals to both the corresponding conveyor belt and the movable conveyor belt on the storage line, enabling synchronized operation between them. Therefore, this invention can increase the length of the storage line and improve its processing efficiency.

[0033] The processes described above with reference to the flowcharts in the embodiments disclosed in this invention can be implemented as computer software programs. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication component, and / or installed from a removable medium. When the computer program is executed by a central processing unit (CPU), it performs the functions defined in the methods of this application. It should be noted that the computer-readable medium described above in this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wire segments, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in connection with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to: wireless segments, wire segments, optical fibers, RF, etc., or any suitable combination thereof.

[0034] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0035] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A control method for a movable plate chain machine in a packing line, characterized in that, The method includes: Detect material information on the production chain and storage chain to obtain material position and transmission speed; Configure a movable plate chain conveyor and determine the current control mode based on the material position and conveying speed; According to the current control mode, the conveyor motor on the movable plate chain machine is driven to move at a first speed, and the material is moved to a first preset position; When the material moves to the first preset position, the conveyor motor on the corresponding movable chain machine is driven to perform a deceleration motion with a reverse preset second acceleration until the material reaches the second speed when it reaches the outlet end of the movable chain machine. The control modes include a bag-retrieving mode and a bag-storing mode. When the material detection result on the movable plate chain machine is empty, and there is corresponding material on the corresponding production chain plate, the movable plate chain machine is set to the bag-retrieving mode, and the moving motor of the movable plate chain machine is driven, so that the inlet of the movable plate chain machine moves to the outlet of the production line with material. When the material detection result on the movable plate chain machine is not empty, and there is no material detected on the storage chain plate, the movable plate chain machine is set to the bag-storing mode, and the moving motor of the movable plate chain machine is driven, so that the outlet of the movable plate chain machine corresponds to the inlet of the storage chain plate. The initial speed of the movable chain conveyor is set to a first speed V1, and the corresponding initial conveying speed on the production line is V0. Since the first speed V1 is greater than V0, the material on the movable chain conveyor experiences a first acceleration a1, including but not limited to static friction, along the conveying direction of the movable production line. Therefore, when the material moves to the first preset position within time T1, S1 = V0. 0* T1+0.5*a1(T1) 2 And V0 + a1 * T1 = V1, therefore, when the material gradually accelerates from V0 to V1 with an acceleration of a1, the material is no longer accelerated, and a deceleration operation is performed; when S1 < V 0* T1+0.5*a1(T1) 2 At this time, the material has already reached the first speed V1 before T1. At this time, the material is accelerated to the specified first speed V1 before the first preset position P, and runs to the first preset position P according to the specified first speed V1; and further deceleration operation is performed at the first preset position. In the path between the first preset position at a distance S2 and the exit of the movable chain machine, a deceleration motion with a second acceleration a2 is performed in the reverse direction of the movable chain machine's transmission direction. At this time, a preset second speed is defined as V2, where V2 < V1, and V2 = a. 2* T2+V1, satisfying V1*T2+0.5*a2*(T2). 2 ≤S2, because the preset second speed V2 has been reached before a preset position, at which point the total material transport time T on the moving chain plate is greater than T1+T2, and the speed is reduced to the preset second speed V2 before the end exit of the moving chain plate.

2. The control method for a movable plate chain machine in a packing line according to claim 1, characterized in that, The control mode includes an energy-saving mode. When no material information is detected on the production chain, and no corresponding material information is detected on itself and the storage chain, the system controls itself, the storage line, and the production chain to stop operating.

3. A control system for a packing line movable plate chain machine, characterized in that, The system executes the control method for a packing line movable plate chain machine as described in any one of claims 1-2.

4. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which is executed by a processor according to any one of claims 1-2, a method for controlling a packing line movable plate chain machine.

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