Pet cage packaging line layout optimization method

Abstract

The invention discloses a layout optimization method for a pet cage packaging line. The layout optimization method comprises the following steps: classifying mechanical equipment and auxiliary facilities related to a production line of the pet cage packaging line according to similarity and correlation in the aspects of functions, process flows and production structures; carrying out quantitative analysis on the layout of the production line in combination with the transportation distance and the logistics quantity; the calculation result is drawn into a distance from-to-to table used for representing the distance of the material from the starting operation unit to the arrival operation unit; carrying out logistics intensity calculation by adopting an empirical estimation method; carrying out deep analysis on non-logistics factors and non-logistics relationships among the operation units; and calculating comprehensive relation scores by combining the logistics relation weight and the non-logistics relation weight, arranging the quantized comprehensive relation scores from large to small, then dividing corresponding comprehensive relation grades according to a certain proportion, and obtaining a comprehensive relation correlation graph of the operation unit pair.

Description

Technical field:

[0001] The invention relates to a pet cage packaging line layout optimization method. Background technology:

[0002] In recent years, with the improvement of people's living standards and the increase in their love for pets, the global pet market has shown a steady growth trend. In the future, the market size of pet cages will continue to grow at a certain rate, and the demand for pet cages by pet owners will 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 the manufacturing industry, 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, so as to better adapt to market demand.

[0003] At present, in addition to manual packaging and production of pet cages, pet cage manufacturing companies on the market often use transport carts to transport parts and semi-finished products. The layout of this traditional packaging production line basically uses the workstation as the intermediate node for transportation, and cooperates with the workstation workers or special machines to operate and then pass it to the next transportation station to finally complete the packaging and production of the pet cage. Due to the existing pet cage production steps being too cumbersome and the overall workload being large, the traditional production line has problems such as low production efficiency, unstable product quality, high labor costs, and easy fatigue of workers, which ultimately results in a relatively low product yield and cannot meet the actual needs of the existing market. Summary of the invention:

[0004] The embodiment of the present invention provides a pet cage packaging line layout optimization method. The method is reasonably designed, based on visual inspection and flexible manufacturing, and uses the SLP algorithm for analysis and planning. It can establish a pet cage automated packaging production line, realize the automation and assembly line of the production process, thereby greatly improving the overall production efficiency. At the same time, the automated assembly and packaging process can avoid delays and errors in human operation, improve the operation speed and stability of the production line, reduce production costs, meet the market demand for efficient production, reduce the impact of human factors on product quality, ensure the consistency and accuracy of product assembly, reduce the product defective rate, improve the overall product quality, and solve the problems existing in the prior art.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A pet cage packaging line layout optimization method, the layout optimization method comprising the following steps:

[0007] S1, classify the mechanical equipment and auxiliary facilities related to the pet cage packaging line according to the similarities and correlations in terms of functional role, process flow and production structure to form multiple interconnected areas; specifically, the production line is divided into 6 operating units, including raw material area, assembly area, welding area, unpacking area, packing area and sealing area;

[0008] S2, quantitatively analyze the layout of the production line by combining the transportation distance and the logistics volume. According to the size of each equipment in the production line, the center of each operation unit is used as the starting point and end point of the distance measurement, and the distance between each operation unit is calculated using the Manhattan distance;

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

[0010] S4, use the empirical estimation method to calculate the logistics intensity, and collect the calculation results into the logistics intensity from to table, convert the logistics intensity expressed in numerical values ​​into five intensity levels composed of vowels, including A (Absolutely Important), E (Extremely Important), I (Important), O (Ordinary), and U (Unimportant), representing the decreasing size of logistics intensity. According to the logistics intensity level table, the intensity levels between the operation unit pairs are sorted to form a logistics relationship correlation diagram;

[0011] S5, conduct in-depth analysis of non-logistics factors and non-logistics relationships between operating units to improve the rationality and accuracy of layout design. The non-logistics relationship levels are divided into six levels: A, E, I, O, U and X;

[0012] S6, combining the logistics relationship weight and the non-logistics relationship weight, calculates the comprehensive relationship score, arranges the quantified comprehensive relationship score in order from large to small, and then divides the corresponding comprehensive relationship level according to a certain ratio, obtains the comprehensive relationship correlation diagram of the operation unit pair, and then draws the position relationship diagram of the operation unit to obtain the optimized layout of the operation unit and complete the construction of the production line.

[0013] The raw material area is used for stacking semi-finished products, the assembly area includes a clamping robot arm and a screw assembly robot arm, which are used to assemble the integrated cage body and door frame of the pet cage; the welding area includes a clamping robot arm and a welding robot arm, which are used to weld the assembled pet cage and the universal wheel; the unpacking area includes a box unpacking machine and a tape pasting machine, which are used to unpack and paste the bottom tape; the packing area is used to pack the assembled pet cage into cartons; the sealing area includes a tape pasting machine and a strapping machine, which are used to paste and strap the top tape of the carton.

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

[0015] The calculation formula of the Manhattan distance is:

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

[0017] Among them, d ij represents the Manhattan distance between operation unit i and operation unit j; x i With y i Respectively represent the horizontal and vertical coordinates of the operation unit i; j With y j They represent the horizontal and vertical coordinates of the operating unit j respectively.

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

[0019] f ij =d ij ·q ij

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

[0021]

[0022] Among them, f ij is the logistics intensity between operation unit i and operation unit j; q ij is the logistics volume between operation unit i and operation unit j; d ij is the distance between operation unit i and operation unit j; F is the logistics intensity of the entire production line.

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

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

[0025] S5.2, based on the determination of the influencing factors of non-logistics relationships and the range of quantities of each level, derive the level of non-logistics relationships between each pair of operating units in the pet cage packaging line;

[0026] S5.3, organize the non-logistics hierarchical relationships between pairs of operating units into a non-logistics relationship correlation diagram.

[0027] 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:

[0028] TR ij =mMR ij +nN ij

[0029] Among them, TR ij is the comprehensive relationship score, MR ij is the logistics relationship score, NR ij is the non-logistics relationship score; MR ij With NR ij The value of is obtained by quantitatively assigning its logistics relationship level and non-logistics relationship level, usually A=4, E=3, I=2, O=1, U=0, X=-1.

[0030] The optimized layout of the operation unit 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, with the starting point and the end point close to each other, which is convenient for material input and finished product output; the unit layout is to divide the production line into several independent units, each unit completes a specific production task;

[0031] In the position relationship diagram, 3 line segments are used to represent A-level relationship, 2 line segments are used to represent E-level relationship, 1 line segment is used to represent I-level relationship, and O-level and U-level relationships are not represented by line segments.

[0032] The optimized layout of the pet cage packaging line is simulated, the working unit parameters and working time are set, and a summary report is generated. The balance rate and balance loss rate are used to evaluate the simulation results.

[0033] The present invention adopts the above structure, classifies the mechanical equipment and auxiliary facilities related to the pet cage packaging line production line through the similarities and correlations in functional effects, process flows and production structures, and forms a plurality of interconnected areas; quantitatively analyzes the layout of the production line by combining the transportation distance and the logistics volume, and calculates the distance between each operating unit by using the Manhattan distance according to the size of each device of the production line and the center of each operating unit as the starting point and end point of the distance measurement; plots the calculation results into a distance from to table to indicate the distance between the material from the departure operating unit to the arrival operating unit; calculates the logistics intensity by an empirical estimation method, and collects the calculation results into a logistics intensity from to table; and conducts an in-depth analysis of the non-logistics factors and non-logistics relationships between the operating units to improve the rationality and accuracy of the layout design, which has the advantages of accuracy, efficiency, precision and practicality. Description of the drawings:

[0034] Figure 1 It is a schematic diagram of the process of the present invention.

[0035] Figure 2 The distance from to table of the present invention.

[0036] Figure 3 The logistics intensity of the present invention is from to table.

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

[0038] Figure 5 It is a logistics relationship correlation diagram of the present invention.

[0039] Figure 6 It is a non-logistics relationship correlation diagram of the present invention.

[0040] Figure 7 It is the comprehensive relationship quantization table of the present invention.

[0041] Figure 8 It is a comprehensive relationship correlation diagram of the present invention.

[0042] Fig. 9 It is a position relationship diagram of the working units of the present invention. Specific implementation method:

[0043] In order to clearly illustrate the technical features of the present solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0044] like Figure 1-9 As shown in the figure, a pet cage packaging line layout optimization method comprises the following steps:

[0045] S1, classify the mechanical equipment and auxiliary facilities related to the pet cage packaging line according to the similarities and correlations in terms of functional role, process flow and production structure to form multiple interconnected areas; specifically, the production line is divided into 6 operating units, including raw material area, assembly area, welding area, unpacking area, packing area and sealing area;

[0046] S2, quantitatively analyze the layout of the production line by combining the transportation distance and the logistics volume. According to the size of each equipment in the production line, the center of each operation unit is used as the starting point and end point of the distance measurement, and the distance between each operation unit is calculated using the Manhattan distance;

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

[0048] S4, use the empirical estimation method to calculate the logistics intensity, and collect the calculation results into the logistics intensity from to table, convert the logistics intensity expressed in numerical values ​​into five intensity levels composed of vowels, including A (Absolutely Important), E (Extremely Important), I (Important), O (Ordinary), and U (Unimportant), representing the decreasing size of logistics intensity. According to the logistics intensity level table, the intensity levels between the operation unit pairs are sorted to form a logistics relationship correlation diagram;

[0049] S5, conduct in-depth analysis of non-logistics factors and non-logistics relationships between operating units to improve the rationality and accuracy of layout design. The non-logistics relationship levels are divided into six levels: A, E, I, O, U and X;

[0050] S6, combining the logistics relationship weight and the non-logistics relationship weight, calculates the comprehensive relationship score, arranges the quantified comprehensive relationship score in order from large to small, and then divides the corresponding comprehensive relationship level according to a certain ratio, obtains the comprehensive relationship correlation diagram of the operation unit pair, and then draws the position relationship diagram of the operation unit to obtain the optimized layout of the operation unit and complete the construction of the production line.

[0051] The raw material area is used for stacking semi-finished products, the assembly area includes a clamping robot arm and a screw assembly robot arm, which are used to assemble the integrated cage body and door frame of the pet cage; the welding area includes a clamping robot arm and a welding robot arm, which are used to weld the assembled pet cage and the universal wheel; the unpacking area includes a box unpacking machine and a tape pasting machine, which are used to unpack and paste the bottom tape; the packing area is used to pack the assembled pet cage into cartons; the sealing area includes a tape pasting machine and a strapping machine, which are used to paste and strap the top tape of the carton.

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

[0053] The calculation formula of the Manhattan distance is:

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

[0055] Among them, d ij represents the Manhattan distance between operation unit i and operation unit j; x i With y i Respectively represent the horizontal and vertical coordinates of the operation unit i; j With y j They represent the horizontal and vertical coordinates of the operating unit j respectively.

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

[0057] f ij =d ij ·q ij

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

[0059]

[0060] Among them, f ij is the logistics intensity between operation unit i and operation unit j; q ij is the logistics volume between operation unit i and operation unit j; d ij is the distance between operation unit i and operation unit j; F is the logistics intensity of the entire production line.

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

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

[0063] S5.2, based on the determination of the influencing factors of non-logistics relationships and the range of quantities of each level, derive the level of non-logistics relationships between each pair of operating units in the pet cage packaging line;

[0064] S5.3, organize the non-logistics hierarchical relationships between pairs of operating units into a non-logistics relationship correlation diagram.

[0065] 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:

[0066] TR ij =mMR ij +nN ij

[0067] Among them, TR ij is the comprehensive relationship score, MR ij is the logistics relationship score, NR ij is the non-logistics relationship score; MR ij With NR ij The value of is obtained by quantitatively assigning its logistics relationship level and non-logistics relationship level, usually A=4, E=3, I=2, O=1, U=0, X=-1.

[0068] The optimized layout of the operation unit 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, with the starting point and the end point close to each other, which is convenient for material input and finished product output; the unit layout is to divide the production line into several independent units, each unit completes a specific production task;

[0069] In the position relationship diagram, 3 line segments are used to represent A-level relationship, 2 line segments are used to represent E-level relationship, 1 line segment is used to represent I-level relationship, and O-level and U-level relationships are not represented by line segments.

[0070] The optimized layout of the pet cage packaging line is simulated, the working unit parameters and working time are set, and a summary report is generated. The balance rate and balance loss rate are used to evaluate the simulation results.

[0071] The working principle of the pet cage packaging line layout optimization method in the embodiment of the present invention is: using the SLP algorithm for analysis and planning, it is possible to establish an automated pet cage packaging production line, realize the automation and assembly line of the production process, thereby greatly improving the overall production efficiency. At the same time, the automated assembly and packaging process can avoid delays and errors in human operations, improve the operating speed and stability of the production line, reduce production costs, adapt to the market demand for efficient production, reduce the impact of human factors on product quality, ensure the consistency and accuracy of product assembly, reduce the defective rate of products, and improve the overall product quality.

[0072] The SLP algorithm is a layout design method commonly used in the field of industrial engineering. It mainly helps determine the layout location of the work unit by analyzing the logistics intensity between each work unit, organizing and arranging the work space to optimize process efficiency, reduce material handling costs, and improve productivity and work environment quality.

[0073] The SLP algorithm mainly considers five basic elements when performing layout design, including P, Q, R, S, and T. Their specific meanings are shown in Appendix 1.

[0074]

[0075] Schedule 1

[0076] The specific steps of the SLP algorithm are as follows: collect and analyze the data of the five raw materials P, Q, R, S, and T, and divide their respective operating units based on their process flow; explore the logistics and non-logistics relationships between the operating units, and draw the corresponding logistics and non-logistics relationship diagrams; weightedly summarize the results of the logistics and non-logistics relationships, derive the comprehensive correlation, and draw the mutual position relationship diagram between the operating units; after obtaining the preliminary position correlation diagram, adjust it in combination with the constraints in the actual situation to obtain alternative plans that are both logical and feasible; use scientific methods to evaluate the alternative plans, and select the final optimal layout design plan through comparative analysis.

[0077] In the overall scheme, the layout optimization method includes the following steps: classifying the mechanical equipment and auxiliary facilities related to the pet cage packaging line production line according to the similarities and correlations in terms of functional role, process flow and production structure to form multiple interconnected areas; specifically, the production line is divided into 6 operating units, including raw material area, assembly area, welding area, unpacking area, packing area and sealing area; quantitatively analyzing the layout of the production line in combination with the transportation distance and logistics volume, according to the size of each equipment in the production line, taking the center of each operating unit as the starting point and end point of the distance measurement, and using Manhattan distance to calculate the distance between each operating unit; drawing the calculation results into a distance from to table to represent the distance between the material from the departure operating unit to the arrival operating unit; regarding the material exchange between each automated equipment as logistics, the average daily logistics volume between each operating unit can be obtained according to the output and the weight of the pet cage; using the empirical estimation method to calculate the logistics intensity, and collecting the calculation results into the logistics intensity from to table, converting the logistics intensity expressed in numerical values ​​into five intensity levels composed of vowels, including A (Absolutely Important), E (Extremely Important), I (Important), O (Ordinary), and U (Unimportant), representing the decreasing size of logistics intensity. According to the logistics intensity grade table, the intensity grades between the work unit pairs are sorted out to form a logistics relationship correlation diagram; the non-logistics factors and non-logistics relationships between the work units are deeply analyzed to improve the rationality and accuracy of the layout design. The non-logistics relationship grades are divided into six grades: A, E, I, O, U, and X; the comprehensive relationship score is calculated by combining the logistics relationship weight and the non-logistics relationship weight, and the quantified comprehensive relationship score is arranged in order from large to small, and then the corresponding comprehensive relationship grades are divided according to a certain ratio to obtain the comprehensive relationship correlation diagram of the work unit pairs, and then the position relationship diagram of the work unit is drawn to obtain the optimized layout of the work unit, and the construction of the production line is completed.

[0078] Specifically, the raw material area is 2m long and 2m wide, and is mainly used for stacking semi-finished products; the assembly area is 2m long and 4m wide, including a clamping robot arm and a screw assembly robot arm, which are mainly used to assemble the integrated cage body and door frame of the pet cage; the welding area is 2m long and 4m wide, including a clamping robot arm and a welding robot arm, which are mainly used to weld the assembled pet cage and universal wheels; the unpacking area is 3m long and 2.5m wide, including a carton opener and a tape paster, which are mainly used for unpacking and pasting the bottom tape; the packing area is 2m long and 2m wide, and is mainly used to pack the assembled pet cages into cartons; the sealing area is 2m long and 2.5m wide, including a tape paster and a strapping machine, which are mainly used for pasting and strapping the top tape of the carton.

[0079] There are logistics handling activities in the operation of pet cage packaging line, and these material handling activities closely integrate various operation units; this application conducts quantitative analysis on the layout from two aspects: transportation distance and logistics volume.

[0080] Since each area of ​​the production line uses a conveyor belt as a means of connecting logistics, the distance between each operating unit is calculated using the Manhattan distance based on the size of each device and the center of each operating unit as the starting point and end point of the distance measurement. The calculation formula of the Manhattan distance is:

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

[0082] Among them, d ij represents the Manhattan distance between operation unit i and operation unit j; x i With y i Respectively represent the horizontal and vertical coordinates of the operation unit i; j With y j They represent the horizontal and vertical coordinates of the operating unit j respectively.

[0083] In the distance from to table, the numbers in the table represent the corresponding work units: 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 various automated equipment can be regarded as logistics, such as the transportation volume of semi-finished products from the raw material area to the assembly area, the transportation volume of universal wheels from the material area to the welding area, and the transportation volume of cartons from the unpacking area to the packing area.

[0085] Furthermore, the logistics intensity of a production line is an important indicator for evaluating and measuring the concentration and efficiency level of logistics activities on the production line. It involves many aspects such as the flow efficiency of materials on the production line, transportation and storage costs, and the degree of coordination between various links. It is not appropriate to simply use weight to measure the size of the logistics intensity; therefore, these materials must be corrected and converted into a unified quantity on this basis before calculations and analysis can be performed. This unified quantity is the equivalent logistics flow rate. This application uses a relatively simple and convenient empirical estimation method to calculate the logistics intensity.

[0086] The empirical estimation method uses the product of the logistics volume and distance between the operating unit pairs as the judgment standard for the size of the logistics intensity. The calculation formula of the empirical estimation method is:

[0087] f ij =d ij ·q ij

[0088] The logistics intensity calculation formula for the entire production line is:

[0089]

[0090] Among them, f ij is the logistics intensity between operation unit i and operation unit j; q ij is the logistics volume between operation unit i and operation unit j; d ij is the distance between operation unit i and operation unit j; F is the logistics intensity of the entire production line.

[0091] In this application, the division criteria include division by the proportion of logistics routes and division by the proportion of logistics volume undertaken. This application chooses the proportion of logistics volume undertaken by each route as the main basis for division, and sorts the logistics intensity between each pair of operating units from large to small.

[0092] Furthermore, non-logistics factors will have a certain impact on the relationship between the operating units. Therefore, it is necessary to conduct an in-depth analysis of the non-logistics relationship between the operating units to improve the rationality and accuracy of the layout design; the non-logistics factors include the continuity of the process, the convenience of material handling, vibration, noise and pollution, and the safety of the operating environment.

[0093] Specifically, pet cage packaging and assembly has a smooth process flow in the production process. When designing the production line layout, in order to ensure the continuity of the process flow, these work units need to be as close as possible; convenient material handling can greatly improve the production efficiency of components and reduce production and handling costs, which is also one of the non-logistics factors affecting the production line layout design; some equipment will produce vibration, noise and other pollution during use, which will have a certain impact on other equipment or work units, so these work units need to be as far away from each other as possible.

[0094] Preferably, an in-depth analysis of non-logistics factors and non-logistics relationships between operating units includes the following steps: calculating the number of operating unit pairs and dividing them according to the level of non-logistics relationships; obtaining the level of non-logistics relationships between operating unit pairs of the pet cage packaging line on the basis of determining the influencing factors of non-logistics relationships and the number range of each level; and organizing the non-logistics level relationships between operating unit pairs 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 +nN ij

[0097] Among them, TR ij is the comprehensive relationship score, MR ij is the logistics relationship score, NR ij is the non-logistics relationship score; MR ij With NR ij The value of is obtained by quantitatively assigning its logistics relationship level and non-logistics relationship level, usually A=4, E=3, I=2, O=1, U=0, X=-1.

[0098] Arrange the quantified comprehensive relationship scores in order from large to small, and then divide the corresponding comprehensive relationship levels according to a certain ratio.

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

[0100] As for the optimized layout, the optimized layout of the work unit 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, with the starting point and the end point relatively close, which is convenient for material input and finished product output; the unit layout is to divide the production line into several independent units, each unit completing a specific production task.

[0101] The advantage of the linear layout is that it simplifies the material flow and reduces the time and cost of moving products between workstations. The disadvantage is that expanding or modifying the production line may be complicated and costly. The advantage of the U-shaped layout is that it is easy to monitor the entire production process. The disadvantage is that the space utilization may not be as efficient as the linear layout, and there are certain requirements for the shape of the site. The advantage of the unit layout is that it is highly flexible and easy to adjust and expand each unit according to production needs. The disadvantage is that it may require more management and coordination, and the material flow between units may be more complicated. For pet cage manufacturers, efficiency and cost are given priority, and the process flow and material transportation routes are relatively simple, so a linear layout is selected.

[0102] This application analyzes the pet cage packaging line through a modular design concept, and divides the pet cage packaging line into two modules: assembly and packaging. The assembly module includes screw assembly and welding of universal wheels, and the packaging module includes boxing, sealing, and bundling. The SLP algorithm is then used to optimize the layout of the pet cage packaging line, and the overall process flow is determined by comprehensively considering the requirements of pet cage output, volume, and production time.

[0103] It is especially noted that the optimized layout of the pet cage packaging line can also be simulated, the working unit parameters and working time can be set, and a summary report can be generated. At the same time, the balance rate and balance loss rate can be used to evaluate the balance of the simulation results. The balance rate of the production line is the ratio of the sum of the operating time of each process to the number of processes multiplied by the bottleneck process time. In the production line, the balance rate can reflect the balance of the operating time of each process. The balance loss rate of the production line is first calculated by the ratio of the sum of the operating time of each process to the number of processes multiplied by the bottleneck process time, and then this value is subtracted from 1. This ratio reflects the degree of balance loss of the production line.

[0104] To sum up, the pet cage packaging line layout optimization method in the embodiment of the present invention uses the SLP algorithm for analysis and planning, and can establish an automated pet cage packaging production line to realize the automation and assembly line of the production process, thereby greatly improving the overall production efficiency. At the same time, the automated assembly and packaging process can avoid delays and errors in human operations, improve the operating speed and stability of the production line, reduce production costs, adapt to the market demand for efficient production, reduce the impact of human factors on product quality, ensure the consistency and accuracy of product assembly, reduce the defective rate of products, and improve the overall product quality.

[0105] The above specific implementation manner cannot be used as a limitation on the protection scope of the present invention. For those skilled in the art, any substitution, improvement or change made to the implementation manner of the present invention falls within the protection scope of the present invention.

[0106] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A pet cage packaging line layout optimization method, characterized in that: The layout optimization method comprises the following steps: S1, classify the mechanical equipment and auxiliary facilities related to the pet cage packaging line according to the similarities and correlations in terms of functional role, process flow and production structure to form multiple interconnected areas; specifically, the production line is divided into 6 operating units, including raw material area, assembly area, welding area, unpacking area, packing area and sealing area; S2, quantitatively analyze the layout of the production line by combining the transportation distance and the logistics volume. According to the size of each equipment in the production line, the center of each operation unit is used as the starting point and end point of the distance measurement, and the distance between each operation unit is calculated using the Manhattan distance; S3, the calculation results are plotted into a distance from to table, which is used to represent the distance between the material from the departure operation unit to the arrival operation unit; the material exchange between each automation equipment is regarded as logistics, and the average daily logistics volume between each operation unit can be obtained according to the output and the weight of the pet cage; S4, use the empirical estimation method to calculate the logistics intensity, and collect the calculation results into the logistics intensity from to table, convert the logistics intensity expressed in numerical values ​​into five intensity levels composed of vowels, including A (Absolutely Important), E (Extremely Important), I (Important), O (Ordinary), and U (Unimportant), representing the decreasing size of logistics intensity. According to the logistics intensity level table, the intensity levels between the operation unit pairs are sorted to form a logistics relationship correlation diagram; S5, conduct in-depth analysis of non-logistics factors and non-logistics relationships between operating units to improve the rationality and accuracy of layout design. The non-logistics relationship levels are divided into six levels: A, E, I, O, U and X; S6, combining the logistics relationship weight and the non-logistics relationship weight, calculates the comprehensive relationship score, arranges the quantified comprehensive relationship score in order from large to small, and then divides the corresponding comprehensive relationship level according to a certain ratio, obtains the comprehensive relationship correlation diagram of the operation unit pair, and then draws the position relationship diagram of the operation unit to obtain the optimized layout of the operation unit and complete the construction of the production line.

2. The pet cage packaging line layout optimization method according to claim 1, characterized in that: The raw material area is used for stacking semi-finished products, the assembly area includes a clamping robot arm and a screw assembly robot arm, which are used to assemble the integrated cage body and door frame of the pet cage; the welding area includes a clamping robot arm and a welding robot arm, which are used to weld the assembled pet cage and the universal wheel; the unpacking area includes a box unpacking machine and a tape pasting machine, which are used to unpack and paste the bottom tape; the packing area is used to pack the assembled pet cage into cartons; the sealing area includes a tape pasting machine and a strapping machine, which are used to paste and strap the top tape of the carton.

3. The pet cage packaging line layout optimization method according to claim 1, characterized in that: The non-logistics factors include the continuity of the process, the convenience of material handling, vibration, noise and pollution, and the safety of the working environment.

4. The pet cage packaging line layout optimization method according to claim 1, characterized in that: The calculation formula of the Manhattan distance is: d ij =|x i -x j |+|y i -y j | Among them, d ij represents the Manhattan distance between operation unit i and operation unit j; x i With y i Respectively represent the horizontal and vertical coordinates of the operation unit i; j With y j They represent the horizontal and vertical coordinates of the operating unit j respectively.

5. The pet cage packaging line layout optimization method according to claim 1, characterized in that: The calculation formula of the empirical estimation method is: f ij =d ij ·q ij The logistics intensity calculation formula for the entire production line is: Among them, f ij is the logistics intensity between operation unit i and operation unit j; q ij is the logistics volume between operation unit i and operation unit j; d ij is the distance between operation unit i and operation unit j; F is the logistics intensity of the entire production line.

6. The pet cage packaging line layout optimization method according to claim 1, characterized in that: An in-depth analysis of non-logistics factors and non-logistics relationships between operating units includes the following steps: S5.1, calculate the number of pairs of operating units and divide them according to the level of non-logistics relationship; S5.2, based on the determination of the influencing factors of non-logistics relationships and the range of quantities of each level, derive the level of non-logistics relationships between each pair of operating units in the pet cage packaging line; S5.3, organize the non-logistics hierarchical relationships between pairs of operating units into a non-logistics relationship correlation diagram.

7. The pet cage packaging line layout optimization method according to claim 1, characterized in that: 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: TR ij =mMR ij +nNR ij Among them, TR ij is the comprehensive relationship score, MR ij is the logistics relationship score, NR ij is the non-logistics relationship score; MR ij With NR ij The value of is obtained by quantitatively assigning its logistics relationship level and non-logistics relationship level, usually A=4, E=3, I=2, O=1, U=0, X=-1.

8. The pet cage packaging line layout optimization method according to claim 1, characterized in that: The optimized layout of the operation unit 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, with the starting point and the end point close to each other, which is convenient for material input and finished product output; the unit layout is to divide the production line into several independent units, each unit completes a specific production task; In the position relationship diagram, 3 line segments are used to represent A-level relationship, 2 line segments are used to represent E-level relationship, 1 line segment is used to represent I-level relationship, and O-level and U-level relationships are not represented by line segments.

9. The pet cage packaging line layout optimization method according to claim 1, characterized in that: The optimized layout of the pet cage packaging line is simulated, the working unit parameters and working time are set, and a summary report is generated. The balance rate and balance loss rate are used to evaluate the simulation results.

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