A method and system for lossless synchronization association of a palletizer

Abstract

The present application provides a kind of method and system of lossless synchronization association of palletizer, to solve the error of reading code device after being disturbed in the prior art has cumulative nature, must be eliminated by subsequent algorithm, but its debugging process is more cumbersome.The method comprises the following steps: S1, when the first encoder has pulse signal, it is determined that the box inlet chain is started;S2, according to the preset box size parameter and the running speed of box inlet chain, the box signal synchronized with the palletizer is generated;S3, when the second encoder has pulse signal, it is determined that the tray outlet chain is started;S4, according to the preset tray size parameter and the running speed of tray outlet chain, the tray signal synchronized with the palletizer is generated;S5, the code association is completed according to the box signal and the tray signal.The system comprises a first encoder located on one side of the box inlet chain, a second encoder located on one side of the tray outlet chain, and a control system connected with the first encoder and the second encoder respectively.

Description

[0001] The present application relates to code technology and equipment automatic control field, and particularly relates to a method and system for lossless synchronization association of a palletizer.

[0002] It is a basic prerequisite for correct operation of a set of traceability system to establish accurate box pallet association relationship data. A conventional method is to trigger a code reader to read a box code through one or more sets of code reading devices, and then to establish a packaging association relationship through a software algorithm according to a predefined packaging ratio. This method has the disadvantage that the code reading device and the palletizer are independent, and the error generated after the code reading device is disturbed is cumulative, and must be eliminated through a subsequent algorithm, and the debugging process is relatively cumbersome.

[0003] The present application provides a method and system for lossless synchronization association of a palletizer, to solve the problem in the prior art that the error generated after the code reading device is disturbed is cumulative, and must be eliminated through a subsequent algorithm, but the debugging process is relatively cumbersome.

[0004] The method for lossless synchronization association of the palletizer according to an embodiment of the present application comprises the following steps: S1, when a first encoder has a pulse signal, determining that a box inlet chain track is started; S2, generating a box signal synchronized with the palletizer according to preset box size parameters and a box inlet chain track running speed; S3, when a second encoder has a pulse signal, determining that a pallet outlet chain track is started; S4, generating a pallet signal synchronized with the palletizer according to preset pallet size parameters and a pallet outlet chain track running speed; and S5, completing code association according to the box signal and the pallet signal.

[0005] In the method, the first encoder is reset before the box inlet chain track is started, and the second encoder is reset before the pallet outlet chain track is started.

[0006] In the method, the running distance of the overall roller, the box inlet chain track running speed and the pallet outlet chain track running speed are calculated according to the time of the pulse signals output by the first encoder and the second encoder.

[0007] In the method, the code association according to the box signal and the pallet signal in step S5 specifically comprises: when the box signal is received, triggering a first code reader to collect the codes on the products in the box; when the pallet signal is received, triggering a second code reader to collect the codes on the boxes in the pallet; and associating the codes on the products with the codes on the boxes.

[0008] ​​​The system for non-loss synchronous association of the palletizer according to the embodiment of the application comprises a first encoder located at one side of the box inlet chain, a second encoder located at one side of the tray outlet chain, and a control system connected with the first encoder and the second encoder respectively; the first encoder is used to send or interrupt the pulse signal according to the start or stop of the box inlet chain; the second encoder is used to send or interrupt the pulse signal according to the start or stop of the tray outlet chain; the control system is used to determine that the box inlet chain is started when the first encoder initially sends the pulse signal, and generate the box signal synchronous with the palletizer according to the preset box size parameter and the running speed of the box inlet chain; determine that the tray outlet chain is started when the second encoder initially sends the pulse signal, and generate the tray signal synchronous with the palletizer according to the preset tray size parameter and the running speed of the tray outlet chain; and complete the association according to the box signal and the tray signal.

[0009] In the embodiment, the first encoder is reset before the start of the box inlet chain, and the first pulse signal sent after the reset is the initial pulse signal; and the second encoder is reset before the start of the tray outlet chain, and the first pulse signal sent after the reset is the initial pulse signal.

[0010] In the embodiment, the control system calculates the running distance of the whole roller, the running speed of the box inlet chain and the running speed of the tray outlet chain according to the time of the pulse signals output by the first encoder and the second encoder.

[0011] In the embodiment, the control system triggers the first code reader to collect the codes on the products in the box when the box signal is received, and triggers the second code reader to collect the codes on the boxes in the tray when the tray signal is received; and associates the codes on the products with the codes on the boxes.

[0012] The method and system for non-loss synchronous association of the palletizer according to the application cancel the mode of triggering the code reader by the electric eye, and increase the incremental encoders at the inlet and outlet of the palletizer respectively, and mechanically synchronize the inlet chain of the palletizer and the outlet chain of the palletizer respectively. The cumulative error and human interference are eliminated, and the stability of the traceability system is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the flow chart of the method for non-loss synchronous association of the palletizer according to the embodiment 1 of the application;

[0014] Figure 2 is the schematic diagram of the pulse signal in the embodiment 1 of the application;

[0015] Figure 3 is the structural schematic diagram of the system for non-loss synchronous association of the palletizer according to the embodiment 2 of the application. DETAILED DESCRIPTION

[0016] The inventor found that the encoder is a device for accurately measuring angular displacement or linear displacement and converting the measurement results into an electrical signal output to the upper computer. If the encoder can be synchronized with the palletizer, and according to the size of the box and the stroke, a corresponding frequency signal (pulse) is generated. When the signal is sent out, the code reader collects the code on the product or box, so that the detection of the passing object by the electric eye is not dependent, and the error accumulation is avoided, and subsequent algorithm debugging is not required. Therefore, the inventor considers that after the encoder sends the pulse signal to the control system, the control system can accurately calculate the running distance of the roller bed; according to whether the encoder has a pulse signal, the start-stop action of the chain track is calculated, and the encoder is automatically reset; according to the preset size of the box or the carrier, a box or carrier signal synchronized with the palletizer is generated. Then, the control system can use the generated box signal or carrier signal to further establish the correlation relationship. The following will be described in detail through examples.

[0017] Example 1, a method for lossless synchronization correlation of a palletizer, as shown in Figure 1 , the method comprises the following main steps:

[0018] S101, when the first encoder has a pulse signal, it is determined that the box inlet chain track is started.

[0019] Specifically, the first encoder is reset before the box inlet chain track is started, so as to keep synchronization. Then, as shown in Figure 2 , the first encoder continuously outputs a pulse signal to the control system.

[0020] 102, according to the preset box size parameter and the running speed of the box inlet chain track, a box signal synchronized with the palletizer is generated.

[0021] The control system calculates the running distance of the whole roller bed and the running speed of the box inlet chain track according to the time and frequency of the pulse signal output by the first encoder, and then generates a box signal synchronized with the palletizer according to the preset box size parameter, as shown in Figure 2 , so that each time the box signal appears, the box body is just running into the reading area of the first code reader.

[0022] 103, when the second encoder has a pulse signal, it is determined that the carrier outlet chain track is started.

[0023] Specifically, the second encoder is reset before the carrier outlet chain track is started, so as to keep synchronization. Then, as shown in Figure 2 , the second encoder continuously outputs a pulse signal to the control system.

[0024] 104. According to the preset pallet size parameter and the pallet exit chain track running speed, a pallet signal synchronized with the palletizer is generated.

[0025] The control system calculates the running distance of the overall roller and the box entrance chain track running speed according to the time and frequency of the second encoder output pulse signal, and generates a pallet signal synchronized with the palletizer according to the preset pallet size parameter, as shown in Figure 2 so that each time the pallet signal appears, the pallet is just traveling into the code reading area of the second code reader.

[0026] 105. The code association is completed according to the box signal and the pallet signal.

[0027] Specifically, when the box signal is received, the first code reader is triggered to collect the codes on the products in the box; when the pallet signal is received, the second code reader is triggered to collect the codes on the boxes in the pallet; and then the codes on the products are associated with the codes on the boxes for subsequent product traceability.

[0028] In the method of the embodiment, the mode of canceling the electric eye to trigger the code reader is realized by adding incremental encoders at the entrance and exit of the palletizer, which are mechanically synchronized with the box entrance chain track at the entrance of the palletizer and the pallet exit chain track at the exit of the palletizer, respectively. The origin signal of mechanical synchronization is automatically generated by the code reader triggered by the start-stop action of the palletizer, so that no cumulative error is caused. The trigger signal of the code reader is generated by the control system, and the encoder is synchronized with the palletizer, which is equivalent to using the palletizer to trigger the code reader, so that automatic synchronization of the traceability system and the palletizer is realized. The traceability system running in the synchronization mode eliminates the cumulative error and human interference, and improves the stability of the traceability system.

[0029] Embodiment 2, a palletizer lossless synchronization association system of the embodiment is realized by using the method of the palletizer lossless synchronization association of the above-mentioned embodiment, as shown in Figure 3 includes a first encoder 201 located on one side of the box entrance chain track, a second encoder 202 located on one side of the pallet exit chain track, a first code reader 203 matched with the first encoder 201, a second code reader 204 matched with the second encoder 202, and a control system 205 connected with the first encoder 201, the second encoder 202, the first code reader 203 and the second code reader 204, respectively.

[0030] The first encoder 201 resets the first encoder before the box entrance chain track starts, and the first pulse signal emitted after the reset is the initial pulse signal, so that the synchronization is maintained. With the start or stop of the box entrance chain track, the control system 205 is sent or interrupted with a pulse signal.

[0031] The second encoder 202 is reset before the start of the box outlet chain, and the first pulse signal sent after the reset is the initial pulse signal, so as to keep synchronization. The pulse signal is sent or interrupted according to the start or stop of the box outlet chain.

[0032] The control system 205 calculates the running distance of the whole roller, the running speed of the box inlet chain and the running speed of the box outlet chain according to the time and frequency of the pulse signals output by the first encoder 201 and the second encoder 202. When the first encoder 201 sends the initial pulse signal, it is determined that the box inlet chain is started, and a box signal synchronized with the palletizer is generated according to the preset box size parameter and the running speed of the box inlet chain. When the second encoder 202 sends the initial pulse signal, it is determined that the box outlet chain is started, and a box signal synchronized with the palletizer is generated according to the preset box size parameter and the running speed of the box outlet chain. The first code reader 203 and the second code reader 204 are triggered according to the box signal and the box signal to complete code reading, thereby realizing code association.

[0033] The first code reader 203 is used to collect the codes on the products in the current box when the control system 205 sends the box signal, and report to the control system 205.

[0034] The second code reader 204 is used to collect the codes on the products in the current box when the control system 205 sends the box signal, and report to the control system 205.

[0035] In the system of the embodiment, the mode of triggering the code reader by the electric eye is cancelled, and an incremental encoder is added at the entrance and exit of the palletizer respectively, and is mechanically synchronized with the box inlet chain at the entrance of the palletizer and the box outlet chain at the exit of the palletizer. The origin signal of mechanical synchronization is automatically generated by the detection of the start and stop actions of the palletizer by the encoder, so that cumulative error is not caused. The trigger signal of the code reader is generated by the control system, and the encoder is synchronized with the palletizer, which is equivalent to triggering the code reader by the palletizer, so that automatic synchronization of the traceability system and the palletizer is realized. The traceability system running in the synchronization mode eliminates cumulative error and human interference, and improves the stability of the traceability system. The description and application of the present application herein are only illustrative and exemplary, and are not intended to limit the scope of the present application to the above embodiments. Variations and changes of the disclosed embodiments are entirely possible, and the replacement and equivalent components of the embodiments are well known to those skilled in the art. It should be clear to those skilled in the art that the present application can be realized in other forms, structures, arrangements, proportions, and with other components, materials and parts without departing from the spirit or essential characteristics of the present application, and other variations and changes of the disclosed embodiments can be made without departing from the scope and spirit of the present application.

Claims

1. A method for lossless synchronous association of palletizers, characterized in that, Includes the following steps: S1. When the first encoder has a pulse signal, it is determined that the box inlet chain has started. S2. Generate a box signal synchronized with the palletizer based on the preset box size parameters and the running speed of the box inlet conveyor. S3. When the second encoder has a pulse signal, it is determined that the delivery chain has started. S4. Generate pallet signals synchronized with the palletizer based on preset pallet size parameters and pallet outlet chain speed. S5. Complete the code association based on the box signal and tray signal.

2. The method for lossless synchronous association of palletizers as described in claim 1, characterized in that, The first encoder is reset before the box inlet chain is started, and the second encoder is reset before the tray outlet chain is started.

3. The method for lossless synchronous association of palletizers as described in claim 1, characterized in that, Based on the timing of the pulse signals output by the first and second encoders, the overall running distance of the roller conveyor, as well as the running speed of the box inlet chain conveyor and the running speed of the tray outlet chain conveyor, are calculated.

4. The method for lossless synchronous association of palletizers as described in claim 1, characterized in that, Step S5, which involves associating the code based on the box signal and the pallet signal, specifically includes: When a box signal is received, the first barcode reader is triggered to collect the codes on each product inside the box; When a pallet signal is received, the second barcode reader is triggered to collect the codes on each box inside the pallet. Associate the codes on each product with the codes on the boxes.

5. A system for lossless synchronous association of palletizers, characterized in that, include: A first encoder located on one side of the box inlet chain track, a second encoder located on one side of the tray outlet chain track, and a control system connected to the first encoder and the second encoder respectively; The first encoder is used to generate or interrupt pulse signals as the inlet chain of the box starts or stops; The second encoder is used to generate or interrupt pulse signals as the pallet exit chain starts or stops; The control system is configured to: determine that the box inlet conveyor belt has started when the first encoder initially emits a pulse signal; and generate a box signal synchronized with the palletizer based on preset box size parameters and the running speed of the box inlet conveyor belt; determine that the pallet outlet conveyor belt has started when the second encoder initially emits a pulse signal; and generate a pallet signal synchronized with the palletizer based on preset pallet size parameters and the running speed of the pallet outlet conveyor belt; and complete code association based on the box signal and pallet signal.

6. The system for lossless synchronous association of palletizers as described in claim 5, characterized in that, The first encoder is reset before the box inlet chain is started, and the first pulse signal emitted after the reset is the initial output pulse signal. The second encoder is reset before the tray outlet chain is started, and the first pulse signal emitted after the reset is the initial output pulse signal.

7. The system for lossless synchronous association of palletizers as described in claim 5, characterized in that, The control system calculates the overall roller conveyor running distance, the box inlet chain conveyor running speed, and the tray outlet chain conveyor running speed based on the timing of the pulse signals output by the first encoder and the second encoder.

8. The system for lossless synchronous association of palletizers as described in claim 5, characterized in that, When the control system receives a box signal, it triggers the first barcode reader to collect the codes on each product in the box; when it receives a tray signal, it triggers the second barcode reader to collect the codes on each box in the tray; and associates the codes on each product with the codes on the boxes.

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