Pet cage packaging line layout optimization method

Abstract

The pet cage packaging line layout optimization method comprises the following steps: classifying pet cage packaging line production line related mechanical equipment and auxiliary facilities according to the similarity and correlation of function, process flow and production structure; the layout of the production line is quantitatively analyzed in combination with the transportation distance and the material flow; the calculation results are drawn into a distance from to table for representing the distance between the material from the starting operation unit to the arrival operation unit; the logistics intensity is calculated by using the empirical estimation method; the non-logistics factors and non-logistics relationships between the operation units are analyzed in depth; the comprehensive relationship score is calculated in combination with the logistics relationship weight and the non-logistics relationship weight, the quantized comprehensive relationship score is arranged in descending order, then the corresponding comprehensive relationship grade is divided according to a certain proportion, and the comprehensive relationship correlation diagram of the operation unit pair is obtained.

Description

TECHNICAL FIELD

[0001] The present application relates to a pet cage packaging line layout optimization method. BACKGROUND

[0002] In recent years, with the improvement of people's living standards and the increase of pet care, the global pet market has shown a steady growth trend. In the future, the pet cage market size will continue to grow at a certain speed, and pet keepers' demand for pet cages will also continue to increase. At the same time, with the continuous development and popularization of automation technology, various industries have introduced automated production lines to improve production efficiency, reduce costs and improve product quality. In manufacturing, automated production lines have become an important means to improve competitiveness. Through automation technology, production lines can achieve intelligent control, flexible production, and efficient operation, thereby better adapting to market demand.

[0003] Currently, in addition to manual packaging production of pet cages, enterprises manufacturing pet cages on the market also often use transport trolleys to transport parts and semi-finished products. This traditional packaging production line layout basically takes the workstation as the intermediate node of the conveying, and cooperates with the workstation workers or special machines to operate and then pass to the next conveying workstation to finally complete the packaging production of the pet cage. Due to the overcomplicated existing pet cage production steps and large overall workload, the traditional production line has problems such as low production efficiency, unstable product quality, high labor cost, and worker fatigue, which ultimately results in a low product yield rate and cannot meet the actual needs of the existing market. SUMMARY

[0004] The pet cage packaging line layout optimization method provided by the embodiments of the present application is reasonable in design, based on visual detection and flexible manufacturing, uses SLP algorithm for analysis and planning, can establish a pet cage automated packaging production line, realizes automation and flow line of the production process, thereby greatly improves the overall production efficiency, and the automated assembly and packaging process can avoid delays and errors in human operation, improves the running speed and stability of the production line, reduces the production cost, adapts to the market demand for efficient production, reduces the influence of human factors on product quality, ensures the consistency and accuracy of product assembly, reduces the product defective rate, improves the overall product quality, and solves the problems in the prior art.

[0005] The technical scheme adopted by the present application to solve the above technical problems is:

[0006] The pet cage packaging line layout optimization method comprises the following steps:

[0007] S1, the pet cage packaging line production line related mechanical equipment and auxiliary facilities are classified according to the similarity and relevance of function, process flow and production structure, forming a plurality of interrelated areas; specifically, the production line is divided into 6 operation units, including raw material area, assembly area, welding area, opening box area, boxing area and sealing box area;

[0008] S2, the layout of the production line is quantitatively analyzed in combination with the transportation distance and the material flow, the center of each operation unit is taken as the starting point and the end point of distance calculation according to the size of each device of the production line, and the Manhattan distance is used to calculate the distance between each operation unit;

[0009] S3, the calculation results are drawn into a distance from to table, which is used to represent the distance between the material from the starting operation unit to the arrival operation unit; the material exchange between each automated device is regarded as the logistics, and the daily average material flow between each operation unit can be obtained according to the output and the weight of the pet cage;

[0010] S4, the logistics intensity is calculated by using the empirical estimation method, and the calculation results are collected into a logistics intensity from to table, the numerical value of logistics intensity is converted into an intensity level composed of five vowel letters, including A (Absolutely Important), E (Extremely Important), I (Important), O (Ordinary), U (Unimportant), which represent the intensity of logistics in descending order, and the intensity level between the operation unit pairs is arranged to form a logistics relationship correlation diagram according to the logistics intensity level table;

[0011] S5, the non-logistics factors and non-logistics relationships between operation units are analyzed in depth to improve the rationality and accuracy of the layout design, and the non-logistics relationship level is divided into A, E, I, O, U and X, a total of six levels;

[0012] S6, combined with the logistics relationship weight and the non-logistics relationship weight, the comprehensive relationship score is calculated, the quantitative comprehensive relationship score is arranged in descending order, then the corresponding comprehensive relationship level is divided according to a certain proportion, the comprehensive relationship correlation diagram of the operation unit pair is obtained, and then the position relationship diagram of the operation unit is drawn, the optimized layout of the operation unit is obtained, and the construction of the production line is completed.

[0013] The raw material area is used for stacking semi-finished products, the assembling area includes clamping mechanical arms and screw assembling mechanical arms, which are used for assembling the integrated cage body and door frame of the pet cage; the welding area includes clamping mechanical arms and welding mechanical arms, which are used for welding the assembled pet cage and universal wheels; the box opening area includes a box opening machine and a tape sticking machine, which are used for opening the box and sticking the bottom tape; the boxing area is used for loading the assembled pet cage into a carton; and the carton sealing area includes a tape sticking machine and a bundling machine, which are used for sticking the top tape of the carton and bundling.

[0014] The non-logistics factors include the continuity of the process flow, the convenience of material handling, vibration, noise, and the safety of the working environment.

[0015] The Manhattan distance calculation formula is:

[0016] d ij = |x i -x j | + |y i -y j |

[0017] Wherein, d ij represents the Manhattan distance between the work unit i and the work unit j; x i and y i respectively represent the horizontal and vertical coordinates of the work unit i; x j and y j respectively represent the horizontal and vertical coordinates of the work unit j.

[0018] The calculation formula of the empirical estimation method is:

[0019] f ij = d ij · q ij

[0020] The logistics intensity calculation formula of the entire production line is:

[0021]

[0022] Wherein, f ij is the logistics intensity between the work unit i and the work unit j; q ij is the material flow between the work unit i and the work unit j; d ij is the distance between the work unit i and the work unit j; and F is the logistics intensity of the entire production line.

[0023] The in-depth analysis of the non-logistics factors and non-logistics relationships between work units includes the following steps:

[0024] S5.1, calculate the number of work unit pairs and divide them according to the non-logistics relationship level;

[0025] S5.2, on the basis of determining the non-material flow relationship influencing factors and the quantity range of each level, obtaining the non-material flow relationship level between each operation unit pair of the pet cage packaging line;

[0026] S5.3, arranging the non-material flow relationship between the operation unit pairs into a non-material flow relationship correlation diagram.

[0027] Taking m as the material flow relationship weight and n as the non-material flow relationship weight, m:n=3:1 is selected; the calculation formula of the comprehensive relationship score is:

[0028] TR ij = mMR ij + nNR ij

[0029] Wherein, TR ij is the comprehensive relationship score, MR ij is the material flow relationship score, and NR ij is the non-material flow relationship score; the values of MR ij and NR ij are obtained by quantifying and assigning the material flow relationship level and the non-material flow relationship level, and A=4, E=3, I=2, O=1, U=0, and X=-1 are usually taken.

[0030] The optimization layout of the operation unit includes a straight line type layout, a U type layout, and a unit type layout; the straight line type layout is that the production line is arranged in a straight line according to the order of assembly, welding, and packaging; the U type layout is that the production line is arranged in a U shape, the starting point and the ending point are relatively close, which is convenient for material input and product output; the unit type layout is that the production line is divided into several independent units, and each unit completes a specific production task.

[0031] In the position relationship diagram, 3 line segments represent A level relationship, 2 line segments represent E level relationship, 1 line segment represents I level relationship, and O level and U level relationship do not use line segments to represent.

[0032] The simulation processing is carried out on the optimization layout of the pet cage packaging line, the operation unit parameters and the working time are set, the summary report is generated, and the balance evaluation is carried out on the simulation result by using the balance rate and the balance loss rate.

[0033] The present application adopts the above structure, and classifies the mechanical equipment and auxiliary facilities related to the pet cage packaging line production line according to the similarity and correlation of the functions, process flow and production structure, forms multiple interrelated areas, quantitatively analyzes the layout of the production line by combining the transportation distance and material flow, calculates the distance between each operation unit by using Manhattan distance according to the size of each device of the production line, draws a distance from-to table by using the calculation results, which is used to represent the distance between the starting operation unit and the arriving operation unit, calculates the logistics intensity by using the empirical estimation method, and collects the calculation results into a logistics intensity from-to table, and deeply analyzes the non-logistics factors and non-logistics relationships between the operation units to improve the rationality and accuracy of the layout design, which has the advantages of high efficiency, accuracy and practicality. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a flowchart of the present application.

[0035] Figure 2 It is a distance from-to table of the present application.

[0036] Figure 3 It is a logistics intensity from-to table of the present application.

[0037] Figure 4 It is a logistics intensity grade table of the present application.

[0038] Figure 5 It is a logistics relationship related graph of the present application.

[0039] Figure 6 It is a non-logistics relationship related graph of the present application.

[0040] Figure 7 It is a comprehensive relationship quantification table of the present application.

[0041] Figure 8 It is a comprehensive relationship related graph of the present application.

[0042] Figure 9 It is a position relationship graph of the operation unit of the present application. DETAILED DESCRIPTION

[0043] In order to clearly illustrate the technical features of the present application, the present application will be described in detail below with reference to the specific embodiments and the accompanying drawings.

[0044] As shown in the Figures 1-9 The pet cage packaging line layout optimization method comprises the following steps:

[0045] S1, the pet cage packaging line production line related mechanical equipment and auxiliary facilities are classified according to the similarity and relevance of function, process flow and production structure, forming a plurality of interrelated areas; specifically, the production line is divided into 6 operation units, including raw material area, assembly area, welding area, opening box area, boxing area and sealing box area;

[0046] S2, the layout of the production line is quantitatively analyzed in combination with the transportation distance and the material flow, the center of each operation unit is taken as the starting point and the end point of distance calculation according to the size of each device of the production line, and the Manhattan distance is used to calculate the distance between each operation unit;

[0047] S3, the calculation results are drawn into a distance from to table, which is used to represent the distance between the material from the starting operation unit to the arrival operation unit; the material exchange between each automated device is regarded as the logistics, and the daily average material flow between each operation unit can be obtained according to the output and the weight of the pet cage;

[0048] S4, the logistics intensity is calculated by using the empirical estimation method, and the calculation results are collected into a logistics intensity from to table, the numerical value of logistics intensity is converted into an intensity level composed of five vowel letters, including A (Absolutely Important), E (Extremely Important), I (Important), O (Ordinary), U (Unimportant), which represent the intensity of logistics in descending order, and the intensity level between the operation unit pairs is arranged to form a logistics relationship correlation diagram according to the logistics intensity level table;

[0049] S5, the non-logistics factors and non-logistics relationships between operation units are analyzed in depth to improve the rationality and accuracy of the layout design, and the non-logistics relationship level is divided into A, E, I, O, U and X, a total of six levels;

[0050] S6, combined with the logistics relationship weight and the non-logistics relationship weight, the comprehensive relationship score is calculated, the quantitative comprehensive relationship score is arranged in descending order, then the corresponding comprehensive relationship level is divided according to a certain proportion, the comprehensive relationship correlation diagram of the operation unit pair is obtained, and then the position relationship diagram of the operation unit is drawn, the optimized layout of the operation unit is obtained, and the construction of the production line is completed.

[0051] The raw material area is used for stacking semi-finished products, the assembling area includes clamping mechanical arms and screw assembling mechanical arms, which are used for assembling the integrated cage body and door frame of the pet cage; the welding area includes clamping mechanical arms and welding mechanical arms, which are used for welding the assembled pet cage and universal wheels; the box opening area includes a box opening machine and a tape sticking machine, which are used for opening the box and sticking the bottom tape; the boxing area is used for loading the assembled pet cage into a carton; and the carton sealing area includes a tape sticking machine and a bundling machine, which are used for sticking the top tape of the carton and bundling.

[0052] The non-logistics factors include the continuity of the process flow, the convenience of material handling, vibration, noise, and the safety of the working environment.

[0053] The Manhattan distance calculation formula is:

[0054] d ij =|x i -x j |+|y i -y j |

[0055] Wherein, d ij represents the Manhattan distance between the work unit i and the work unit j; x i and y i respectively represent the horizontal and vertical coordinates of the work unit i; x j and y j respectively represent the horizontal and vertical coordinates of the work unit j.

[0056] The calculation formula of the empirical estimation method is:

[0057] f ij =d ij ·q ij

[0058] The logistics intensity calculation formula of the entire production line is:

[0059]

[0060] Wherein, f ij is the logistics intensity between the work unit i and the work unit j; q ij is the material flow between the work unit i and the work unit j; d ij is the distance between the work unit i and the work unit j; and F is the logistics intensity of the entire production line.

[0061] The in-depth analysis of the non-logistics factors and non-logistics relationships between work units includes the following steps:

[0062] S5.1, calculate the number of work unit pairs and divide them according to the non-logistics relationship level;

[0063] S5.2, on the basis of determining the non-material flow relationship influencing factors and the quantity range of each level, obtaining the non-material flow relationship level between each operation unit pair of the pet cage packaging line;

[0064] S5.3, arranging the non-material flow relationship between the operation unit pairs into a non-material flow relationship correlation diagram.

[0065] Taking m as the weight of the material flow relationship and n as the weight of the non-material flow relationship, m:n=3:1 is selected; the calculation formula of the comprehensive relationship score is:

[0066] TR ij =mMR ij +nNR ij

[0067] Wherein, TR ij is the comprehensive relationship score, MR ij is the material flow relationship score, and NR ij is the non-material flow relationship score; the values of MR ij and NR ij are obtained by quantifying and assigning the material flow relationship level and the non-material flow relationship level, and A=4, E=3, I=2, O=1, U=0, X=-1 are usually taken.

[0068] The optimized layout of the operation unit includes linear layout, U-shaped layout and unit layout; the linear layout is that the production line is arranged in a straight line according to the order of assembly, welding and packaging; the U-shaped layout is that the production line is arranged in a U shape, the starting point and the ending point are relatively close, which is convenient for material input and product output; the unit layout is that the production line is divided into several independent units, and each unit completes a specific production task.

[0069] In the position relationship diagram, 3 line segments represent A level relationship, 2 line segments represent E level relationship, 1 line segment represents I level relationship, and O level and U level relationship do not use line segments to represent.

[0070] The simulation processing is carried out on the optimized layout of the pet cage packaging line, the work unit parameters and the working time are set, the summary report is generated, and the balance evaluation is carried out on the simulation results by using the balance rate and the balance loss rate.

[0071] The working principle of the pet cage packaging line layout optimization method in the embodiment of the present application is that: the SLP algorithm is used for analysis and planning, which can establish an automatic packaging production line for pet cages, realize the automation and flow line of the production process, thereby greatly improve the overall production efficiency, at the same time, the automatic assembly and packaging process can avoid the delay and error in human operation, improve the running speed and stability of the production line, reduce the production cost, adapt to the market demand for efficient production, reduce the influence of human factors on product quality, ensure the consistency and accuracy of product assembly, reduce the product defective rate, and improve the overall product quality.

[0072] The SLP algorithm is a layout design method commonly used in the field of industrial engineering, which mainly determines the layout position of the operation unit by analyzing the material flow intensity between each operation unit, organizes and arranges the working space to optimize the process efficiency, reduces the material handling cost, and improves the productivity and working environment quality.

[0073] When the SLP algorithm is used for layout design, five basic elements are mainly considered, including P, Q, R, S and T, and their specific meanings are shown in Table 1.

[0074]

[0075] Table 1

[0076] The specific steps of the SLP algorithm are as follows: collect and analyze the five original materials P, Q, R, S and T, divide the respective operation units based on the process flow; explore the material flow relationship and non-material flow relationship between each operation unit, draw the corresponding material flow and non-material flow relationship diagram; weight the results of the material flow and non-material flow relationship, obtain the comprehensive correlation relationship, and draw the mutual position relationship diagram between the operation units; after obtaining the preliminary position correlation diagram, adjust it combined with the constraint conditions in the actual situation, obtain a feasible alternative scheme that conforms to logic; use a scientific method to evaluate the alternative scheme, select the best layout design scheme through comparative analysis.

[0077] In the overall scheme, the layout optimization method comprises the following steps: classifying the mechanical equipment and auxiliary facilities related to the pet cage packaging line according to the similarity and correlation of functions, process flow and production structure to form a plurality of interrelated areas; specifically, the production line is divided into six operation units, including a raw material area, an assembly area, a welding area, an opening box area, a boxing area and a sealing box area; the layout of the production line is quantitatively analyzed in combination with the transportation distance and the material flow, the size of each device of the production line is used as the starting point and the end point of the distance calculation, and the Manhattan distance is used to calculate the distance between each operation unit; the calculation results are drawn into a distance from-to table, which is used to represent the distance between the material from the starting operation unit to the arrival operation unit; the material exchange between each automated device is regarded as a logistics, and the daily average material flow between each operation unit can be obtained according to the output and the weight of the pet cage; the logistics intensity is calculated by using the empirical estimation method, and the calculation results are collected into a logistics intensity from-to table, and the numerical value of the logistics intensity is converted into an intensity level composed of five vowel letters, including A (Absolutely Important), E (Extremely Important), I (Important), O (Ordinary), and U (Unimportant), which represent the size of the logistics intensity in descending order, and the intensity level between the operation unit pairs is arranged to form a logistics relationship correlation diagram according to the logistics intensity level table; non-logistics factors and non-logistics relationships between operation units are analyzed in depth to improve the rationality and accuracy of the layout design, and the non-logistics relationship level is divided into A, E, I, O, U and X, a total of six levels; in combination with the logistics relationship weight and the non-logistics relationship weight, the comprehensive relationship score is calculated, the quantized comprehensive relationship score is arranged in descending order, and then the corresponding comprehensive relationship level is divided according to a certain proportion, the comprehensive relationship correlation diagram of the operation unit pair is obtained, and then the position relationship diagram of the operation unit is drawn to obtain the optimized layout of the operation unit and complete the construction of the production line.

[0078] Specifically, the raw material area is 2m long and 2m wide, mainly used for stacking semi-finished products; the assembly area is 2m long and 4m wide, including a clamping mechanical arm and a screw assembly mechanical arm, mainly used for assembling the integrated cage body and door frame of the pet cage; the welding area is 2m long and 4m wide, including a clamping mechanical arm and a welding mechanical arm, mainly used for welding the assembled pet cage and universal wheels; the opening box area is 3m long and 2.5m wide, including an opening box machine and a tape sticking machine, mainly used for opening boxes and sticking bottom tapes; the boxing area is 2m long and 2m wide, mainly used for packing the assembled pet cage into a carton; the sealing box area is 2m long and 2.5m wide, including a tape sticking machine and a bundling machine, mainly used for sticking top tapes of the carton and bundling.

[0079] Pet cage packaging line in the process of operation, there are logistics handling activities, these material handling activities will be closely combined with each work unit; the layout is quantitatively analyzed from the two aspects of transportation distance and material flow.

[0080] Because the production line of each area is connected by the conveyor belt as the logistics transmission mode, according to the size of each device, the center of each work unit is taken as the starting point and the end point of distance measurement, and the Manhattan distance is used to calculate the distance between each work unit, and the calculation formula of the Manhattan distance is:

[0081] d=|x i -x j |+|y i -y j |

[0082] Wherein, d ij represents the Manhattan distance between work unit i and work unit j; x i and y i respectively represent the horizontal and vertical coordinates of work unit i; x j and y j respectively represent the horizontal and vertical coordinates of work unit j.

[0083] In the distance from to table, the numbers in the table respectively represent the corresponding work unit: 1-raw material area, 2-assembly area, 3-welding area, 4-unpacking area, 5-packing area, 6-sealing area.

[0084] In the pet cage packaging line, the material exchange between each automatic device can be regarded as logistics, for example, the semi-finished product transportation between the raw material area and the assembly area, the universal wheel transportation between the material area and the welding area, the paper box transportation between the unpacking area and the packing area, etc.

[0085] Further, the logistics intensity of the production line is an important index for evaluating and measuring the concentration degree and efficiency level of the logistics activities on the production line, which involves the flow efficiency of the materials on the production line, the transportation and storage cost, and the coordination degree between each link, etc. It is not appropriate to simply use weight to measure the size of logistics intensity; therefore, these materials must be converted into a unified quantity by correction, and on this basis, calculation and analysis can be carried out. The unified quantity is equivalent material flow, and the experience estimation method is used to calculate the logistics intensity.

[0086] The experience estimation method takes the material flow distance product between work unit pairs as the judgment standard of logistics intensity, and the calculation formula of the experience estimation method is:

[0087] f ij =d ij ·q ij

[0088] The logistics intensity calculation formula of the whole production line is:

[0089]

[0090] Wherein, f ij is the logistics intensity between the operation unit i and the operation unit j; q ij is the logistics flow between the operation unit i and the operation unit j; d ij is the distance between the operation unit i and the operation unit j; F is the logistics intensity of the whole production line.

[0091] In the present application, the division criteria include two kinds of division according to the logistics route proportion and division according to the logistics flow proportion borne, the present application selects the logistics flow proportion borne by each route as the main division basis, and the logistics intensity between each operation unit pair is sorted in the descending order.

[0092] Further, the non-logistics factors will have certain influences on the mutual relationship of the operation unit pairs. Therefore, the non-logistics relationship between the operation units must be analyzed in depth to improve the rationality and accuracy of the layout design; the non-logistics factors include the continuity of the process flow, the convenience of the material handling, the vibration, the noise and the pollution and the safety of the operation environment.

[0093] Specifically, the pet cage packaging assembly has a smooth process flow in the production process, when the production line layout design is carried out, in order to ensure the continuity of the process flow, these operation units need to be as close as possible; the convenient material handling can greatly improve the production efficiency of the components and reduce the production and transportation cost, which is also one of the non-logistics factors affecting the production line layout design; part of the equipment will produce vibration, noise and other pollution during use, which will have certain influences on other equipment or operation units, therefore, these operation units need to be as far away as possible.

[0094] Preferably, the in-depth analysis of the non-logistics factors and the non-logistics relationship between the operation units includes the following steps: calculating the number of operation unit pairs and dividing according to the non-logistics relationship grade; on the basis of determining the non-logistics relationship influencing factors and the number range of each grade, the non-logistics relationship grade between each operation unit pair of the pet cage packaging line is obtained; the non-logistics grade relationship between the operation unit pairs is sorted into a non-logistics relationship correlation diagram.

[0095] m represents the logistics relationship weight, n represents the non-logistics relationship weight, and m:n=3:1 is selected; the calculation formula of the comprehensive relationship score is:

[0096] TR ij = mMR ij + nNR ij

[0097] Wherein, TR ij is the comprehensive relationship score, MR ij is the logistics relationship score, NR ij is the non-logistics relationship score; MR ij and NR ij are obtained by quantitatively assigning the logistics relationship grade and the non-logistics relationship grade, and are usually A=4, E=3, I=2, O=1, U=0, and X=-1.

[0098] The quantified comprehensive relationship scores are arranged in descending order, and then the corresponding comprehensive relationship grades are divided according to a certain proportion.

[0099] The comprehensive relationship correlation diagram is obtained, and then the position relationship diagram is obtained, in which 3 line segments represent A-level relationship, 2 line segments represent E-level relationship, 1 line segment represents I-level relationship, and O-level and U-level relationships are not represented by line segments.

[0100] For the optimized layout, the optimized layout of the work units includes a linear layout, a U-shaped layout, and a unit layout; the linear layout is that the production line is arranged in a straight line in the order of assembly, welding, and packaging; the U-shaped layout is that the production line is arranged in a U shape, the starting point and the ending point are relatively close, facilitating material input and finished product output; and the unit layout is that the production line is divided into several independent units, each unit completes a specific production task.

[0101] The linear layout has the advantages of simplifying material flow, reducing product handling time and cost between workstations, and the disadvantages of possible complexity and high cost in expanding or modifying the production line; the U-shaped layout has the advantages of easy monitoring of the entire production process, and the disadvantages of possible less efficient space utilization than the linear layout and certain requirements for site shape; and the unit layout has the advantages of high flexibility, easy adjustment and expansion of each unit according to production needs, and the disadvantages of possible more management and coordination and more complex material flow between units. For pet cage production enterprises, efficiency and cost are given priority, and the process flow and material transportation route are relatively simple, so the linear layout is selected.

[0102] The pet cage packaging line is divided into two modules of assembly and packaging by the modular design concept, the assembly module includes screw assembly and universal wheel welding, and the packaging module includes boxing, sealing, and bundling; the SLP algorithm is used to optimize the layout of the pet cage packaging line, and the overall process flow is determined by comprehensively considering the pet cage production, volume, and production time.

[0103] It is particularly pointed out that the optimization layout of the pet cage packaging line production line can also be simulated, the work unit parameters and working time are set, the summary report is generated, and the balance evaluation is carried out on the simulation result by using the balance rate and the balance loss rate; the production line balance rate is the ratio of the total working time of each process to the product of the process number and the bottleneck process time, in the production line, the balance rate can reflect the balance degree of the working time of each process; the production line balance loss rate is first calculated by the ratio of the total working time of each process to the product of the process number and the bottleneck process time to obtain the production line balance rate, and then subtract this value from 1. The ratio reflects the production line balance loss degree.

[0104] In summary, the pet cage packaging line layout optimization method in the embodiment of the application uses SLP algorithm for analysis and planning, can establish a pet cage automatic packaging production line, realizes the automation and flow line of the production process, thereby greatly improves the overall production efficiency, at the same time, the automatic assembly and packaging process can avoid the delay and error in human operation, improves the running speed and stability of the production line, reduces the production cost, adapts to the market demand for efficient production, reduces the influence of human factors on product quality, guarantees the consistency and accuracy of product assembly, reduces the product defective rate, and improves the overall product quality.

[0105] The above specific embodiments cannot be regarded as a limitation on the protection scope of the present application, and any alternative improvement or change made by those skilled in the art to the embodiments of the present application falls within the protection scope of the present application.

[0106] The details not described in the present application are well-known to those skilled in the art.

Claims

1. A method for optimizing the layout of a pet crate packaging line, characterized in that, The layout optimization method comprises the following steps: S1, the pet cage packaging line related mechanical equipment and auxiliary facilities are classified according to the similarity and correlation of functions, process flow and production structure, and a plurality of interrelated areas are formed; specifically, the production line is divided into six operation units, including a raw material area, an assembly area, a welding area, an opening box area, a boxing area and a sealing box area; S2, the layout of the production line is quantitatively analyzed in combination with the transportation distance and the material flow, the size of each device of the production line is taken as the starting point and the end point of the distance calculation, and the Manhattan distance is used to calculate the distance between each operation unit; S3, the calculation result is drawn into a distance from-to table, which is used to represent the distance between the starting operation unit and the arriving operation unit; the material exchange between each automatic device is regarded as a logistics, and the daily average material flow between each operation unit can be obtained according to the output and the weight of the pet cage; S4, the logistics intensity is calculated by using an empirical estimation method, and the calculation result is collected into a logistics intensity from-to table; the numerical logistics intensity is converted into an intensity level composed of five vowel letters, including A (Absolutely Important), E (Extremely Important), I (Important), O (Ordinary) and U (Unimportant), which represent the intensity in descending order; the intensity level between the operation unit pairs is arranged to form a logistics relationship correlation diagram according to the logistics intensity level table; S5, non-logistics factors and non-logistics relationships between operation units are analyzed in depth to improve the rationality and accuracy of the layout design; the non-logistics relationship level is divided into A, E, I, O, U and X, a total of six levels; S6, the comprehensive relationship score is calculated in combination with the logistics relationship weight and the non-logistics relationship weight, the quantized comprehensive relationship score is arranged in descending order, then the corresponding comprehensive relationship level is divided according to a certain proportion, the comprehensive relationship correlation diagram of the operation unit pairs is obtained, and then the position relationship diagram of the operation unit is drawn to obtain the optimized layout of the operation unit and complete the construction of the production line; m represents the logistics relationship weight, n represents the non-logistics relationship weight, and m:n=3:1 is selected; the calculation formula of the comprehensive relationship score is: where TR ij is the overall relationship score, MR ij is the material relationship score, and NR ij is the non-material relationship score. MR ij With the value of NR ij The value is obtained by quantifying the value of its logistics relationship level and non-logistics relationship level, the value is A=4, E=3, I=2, O=1, U=0, X=-1.

2. The pet crate packaging line layout optimization method of claim 1, wherein: The raw material area is used for stacking semi-finished products, the assembly area includes a clamping mechanical arm and a screw assembly mechanical arm, which are used for assembling the integrated cage body and door frame of the pet cage; the welding area includes a clamping mechanical arm and a welding mechanical arm, which are used for welding the assembled pet cage and universal wheels; the opening box area includes an opening box machine and a tape sticking machine, which are used for opening the box and sticking the bottom tape; the boxing area is used for packing the assembled pet cage into a carton; the sealing box area includes a tape sticking machine and a bundling machine, which are used for sticking the top tape of the carton and bundling.

3. The pet kennel packaging line layout optimization method of claim 1, wherein: The non-logistics factors include the continuity of the process flow, the convenience of material handling, vibration, noise, pollution and the safety of the working environment.

4. The pet kennel packaging line layout optimization method of claim 1, wherein, The calculation formula of the Manhattan distance is: where d ij denotes the Manhattan distance between job units i and j; x i and y i denote the horizontal and vertical coordinates of job unit i, respectively; x j and y j denote the horizontal and vertical coordinates of job unit j, respectively.

5. The pet crate packaging line layout optimization method of claim 1, wherein, The calculation formula of the empirical estimation method is: The calculation formula of the logistics intensity of the whole production line is: wherein f ij is the flow intensity between the work units i and j; q ij is the flow volume between the work units i and j; d ij is the distance between the work units i and j; and F is the flow intensity of the entire production line.

6. The pet kennel packaging line layout optimization method of claim 1, wherein, The in-depth analysis of the non-logistics factors and non-logistics relations between the operation units includes the following steps: S5.1, calculating the number of operation unit pairs and dividing them according to the non-logistics relation levels; S5.2, on the basis of determining the non-logistics relation influencing factors and the number range of each level, obtaining the non-logistics relation levels between the operation unit pairs of the pet cage packaging line; S5.3, arranging the non-logistics level relations between the operation unit pairs into a non-logistics relation correlation diagram.

7. The pet kennel packaging line layout optimization method of claim 1, wherein: The optimized layout of the operation units includes a straight-line type layout, a U-shaped layout and a unit type layout; the straight-line type layout is that the production line is arranged in a straight line according to the order of assembly, welding and packaging; the U-shaped layout is that the production line is arranged in a U shape, the starting point and the ending point are relatively close, which is convenient for material input and product output; the unit type layout is that the production line is divided into several independent units, and each unit completes a specific production task; In the position relation diagram, 3 line segments are used to represent the A-level relation, 2 line segments are used to represent the E-level relation, 1 line segment is used to represent the I-level relation, and the O-level and U-level relations are not represented by line segments.

8. The pet kennel packaging line layout optimization method of claim 1, wherein: The simulation processing is carried out on the optimized layout of the pet cage packaging line, the operation unit parameters and the operation time are set, a summary report is generated, and the simulation results are evaluated in terms of balance rate and balance loss rate.

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