Production line and station distribution method thereof

Abstract

The invention relates to a production line and a station distribution method thereof.The production line comprises a conveying mechanism for conveying objects and a plurality of production mechanisms for machining the objects, and the production mechanisms are used for machining the objects on different conveying lines and connection stations; the ratio of the number of objects processed by a single first production mechanism at a time to the number of objects processed by a single second production mechanism at a time to the number of objects processed by a third production mechanism at a time is larger than or equal to 1, and the ratio is larger than or equal to 2 when set conditions are met. The longest-time-consuming production mechanism in all procedures is separated from other production mechanisms, the other production mechanisms machine objects on different conveying lines, through stepping movement of the conveying lines, the production mechanisms work many times to complete the machining amount the same as that of the longest-time-consuming production mechanism, the occupied area of the production line is reduced, and meanwhile the production efficiency is improved. And the positions of the production mechanisms can be reasonably arranged according to the sequence of production procedures.

Description

Technical Field

[0001] This invention relates to the field of integrated processing technology for multi-process objects, specifically to a production line and its workstation allocation method. Background Technology

[0002] Production lines offer advantages such as reduced human intervention, lower error rates, high automation, and high production efficiency. Achieving even higher levels of automation, smaller footprint, and lower manufacturing costs has always been a goal for those in the field of innovation.

[0003] Existing production lines are generally divided into two types. One type involves setting up a single conveyor line to transport objects, and then multiple production units process the objects at different positions using different procedures until the objects complete the set processing steps. The other type involves setting up multiple conveyor lines, each of which is connected to a production unit. The conveyor line of each production unit is connected to the conveyor lines of the production units in the preceding and following processes to form a conveyor mechanism for transporting objects and processing the objects at the set positions. The existing production line layouts differ in two ways. In the first structure, when the conveyor line moves in a step-by-step manner, all production units process the same number of items per cycle. This is because the conveyor line operates in coordination with the production units, which typically consist of multiple units. These units are categorized based on the processing time of different processes, separating them into the longest-running units and the rest. The intermittent movement of the conveyor line requires waiting for the longest-running unit to complete its process before it can move again. This results in significant waiting time for the other, less time-consuming units. Consequently, the uniform number of items processed per cycle across all units in this type of production line leads to high overall manufacturing costs, long floor space requirements, and consequently, increased purchase costs and space utilization for buyers. In the second structure, the conveyor line... Traditionally, parts are moved using a continuous conveyor system. When some production units need to process parts at fixed workstations, a blocking mechanism is used to stop the parts before processing. To maintain high overall production efficiency, the production unit with the longest processing time often needs to increase its efficiency, i.e., the number of parts produced per unit time, to provide a continuous supply of parts to downstream production units. Therefore, a long conveyor line is often needed between the longest-running production unit and the downstream production units to buffer the material, allowing the downstream production units to work continuously and complete the set processing steps as quickly as possible. As a result, this type of production line often occupies a large space and has high overall manufacturing costs. When parts are changed, causing changes in the longest-running mechanism, the overall layout of the production line will be disrupted, making the commissioning of the production line time-consuming and labor-intensive.

[0004] Therefore, the applicant aims to design a production line that can not only meet the production needs of different processes with large time differences, but also does not reduce the overall production efficiency of the processing of objects, and has the advantages of high automation, small footprint, flexible combination of production and conveying mechanisms, and high overall manufacturing cost reduction rate.

[0005] Furthermore, the overall production efficiency of existing production lines is limited by the processing time of each process and / or the movement time of the objects, which in turn affects the production efficiency of the production line. Therefore, the applicant has designed a production line production mechanism allocation method that further enhances this effect on the basis of a high overall manufacturing cost reduction rate, and also improves the production efficiency of the objects. Summary of the Invention

[0006] The purpose of this invention is to provide a production line that solves the problems of long floor space, high overall production costs due to all production units processing the same number of items at a time, and the need for item buffer areas to increase the efficiency of the longest-running production unit and provide sufficient items for downstream production units. This invention utilizes the differences in processing time between different processes, combined with the layout of the conveying mechanism and the production units, to allow some production units to complete the processing of a group of intermittently conveyed items through multiple operations. Simultaneously, it optimizes the layout of the production units, enabling the production line to be flexibly arranged to accommodate different process sequences, processing time differences, and the number of processes, thereby reducing the overall production line manufacturing cost. The improved production line avoids the adverse effects of large time differences between different processes without reducing production efficiency, and boasts advantages such as high automation, small floor space, and reduced manufacturing costs.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a production line, comprising a material support unit for carrying objects, a conveying mechanism for conveying the material support unit, and a production device for processing the objects. The conveying mechanism includes a first conveyor line and a second conveyor line, both conveying objects in a stepping manner and in opposite directions. It also includes a first connecting station located between the output end of the first conveyor line and the input end of the second conveyor line, and a second connecting station located between the input end of the first conveyor line and the output end of the second conveyor line. The material support unit can move between the first and second conveyor lines via corresponding connecting stations. The production device includes at least one first production mechanism for processing objects on the first conveyor line, at least one second production mechanism for processing objects on the second conveyor line, and a third production mechanism for processing objects at the first connecting station. The processing time of the third production mechanism is the longest among all production mechanisms, and the number of objects processed by the third production mechanism at a time is N. The number of objects processed at a time by the other production mechanisms that do not have the longest processing time is [not specified in the original text]. Compared to N, its ratio All are greater than or equal to 1; In the above scheme, by designing a structure with at least three places to place objects—a first conveyor line, a second conveyor line, and two connecting stations—the connecting stations are positioned between the first and second conveyor lines. These connecting stations buffer the material-carrying units that reciprocate along the two conveyor lines, allowing them to process independently of the stepping movements of the first and second conveyor lines. This enables the production mechanism with the longest processing time to process the objects at the first connecting station. The processing time of this production mechanism is within the sum of the intermittent dwell time, intermittent movement time, and time saved during movement on the upstream conveyor line (i.e., the first conveyor line), allowing the other production mechanisms to complete their processing according to the set plan. In this case, without considering the relationship between the processing time of the other production mechanisms and the processing time of the longest-running production mechanism, the number of objects processed by the other production mechanisms in a single operation can be increased. When the number of items N processed in a single operation is the same as that of the production mechanism with the longest processing time, N is greater than or equal to 1; when N is greater than or equal to 2, the processing time of the other production mechanisms is... When there is a set relationship between the processing time T of the longest-running production unit and the processing time of the unit, it can be based on... ratio Set the number of items processed per batch by the remaining production units. Because the conveyor line moves the parts in a step-by-step manner, it moves all the parts along with it. Therefore, the number of parts processed by each production unit on each conveyor line is the same per batch, and this number depends on the specific production units within those units. The minimum value is determined by Calculate the final number of processes per batch, ensuring the conveyor line passes the confirmed test. The value determines the stepping frequency of the conveyor line, enabling it to move components through multiple movements, thereby completing the same processing volume as the longest-running production mechanism in a single operation. This is because the number of execution units in the production mechanism depends on... The length of the conveyor line was reduced accordingly, resulting in a decrease in both the overall length of the conveyor mechanism and the manufacturing cost of the production mechanism. This also reduced the floor space required for the production line. Since the remaining production mechanisms complete multiple tasks within the processing time of the longest-running production mechanism, the production line's efficiency will not decrease. When the upstream conveyor line supplies the materials, its... When (dwell time + movement time) is equal to or close to T, the overall production efficiency of the production line can be improved, where: It represents the product.

[0008] Preferably, it further includes a first transition device and a second transition device. The first transition device is connected to the first conveyor line and is used to move the material support unit at the output end of the first conveyor line to the input end of the second conveyor line via a first connecting station. The second transition device is connected to the second conveyor line and is used to move the material support unit at the output end of the second conveyor line to the input end of the first conveyor line via a second connecting station.

[0009] In the above scheme, the material support unit can move between the first and second conveyor lines via corresponding connecting stations. This work can be done manually or by mechanical devices. To reduce human interference with the production line, a transition device is set up to complete this work. According to the position of the material support unit, a first transition device, a second transition device, and a third transition device are set up. The first transition device allows the material support unit at the output end of the first conveyor line to move to the input end of the second conveyor line via the first connecting station, while the second transition device allows the material support unit at the output end of the second conveyor line to move to the input end of the first conveyor line via the second connecting station. This realizes the recycling of the material support unit, so that a limited number of material support units can carry objects to complete the conveying and processing. At the same time, the material support unit improves the compatibility of the conveyor line with the conveyed objects. At this time, the type of object does not need to be limited, as long as the corresponding conveyor line and transition device can drive the material support unit to move in a set direction. The transition device is preferably a gripping mechanism or a flat pushing mechanism commonly found on the market. The flat pushing mechanism can refer to the relevant structure of the "bottle pushing mechanism 5" in the Chinese invention patent with patent publication number CN119797260A and title "A three-row filling machine and a single-row filling machine based on a three-row filling machine".

[0010] Specifically, when the first transition device, the second transition device, and the third transition device use a flat-pushing mechanism to move the material support unit, the width of the material support unit needs to be equal to the width of the connecting station, so as to achieve the effect of the material support unit pushing the material support unit to move as described in the above patent, thereby completing the cyclic movement of the material support unit and carrying the moving parts to complete the movement.

[0011] Furthermore, in order to better position the material support unit and enable the material support unit to complete the corresponding movement, it is preferable that the width of each conveyor line, each conveyor unit, and each connecting station is equal to the width of the material support unit.

[0012] Preferably, the production line further includes a third connecting station and a third transition device. The first conveyor line and / or the second conveyor line include at least two conveying units, and a third connecting station is provided between the output end and the input end of two adjacent conveying units, with a ratio of [value missing]. The production mechanism of <2 processes the objects at the third connecting station. The third transition device is connected to the upstream conveying unit and is used to move the material support unit at the output end of the upstream conveying unit to the input end of the downstream conveying unit via the third connecting station. In the above scheme, when the following occurs When <2, it means ratio A value less than 2 indicates that the production mechanism cannot perform multiple operations. If, besides this production mechanism, all other production mechanisms processing items on this conveyor line... All are greater than or equal to 2, in order to ensure that the number of items processed by the production facility in a single operation is greater than or equal to 2. The ratio of the number of processes N in a single operation of the production unit with the longest processing time. Since the ratio is greater than or equal to 2, a third connecting station is set up to make the ratio equal to 2. The production unit with a capacity of <2 processes the items at the third connecting station, thereby reducing the overall footprint and manufacturing cost of its production line.

[0013] Preferably, the third production mechanism processes the objects at the second connecting station, and the processing time of the third production mechanism is the longest among all production mechanisms.

[0014] In the above scheme, when the production process performed by the production mechanism with the longest time consumption, namely the third production mechanism, is in the first half of all processes, it is preferable to have it process the objects on the first connecting station. At this time, a production mechanism can be set up on the second connecting station to complete the processing, such as the production mechanism that performs the unloading process, or the production mechanism that performs the unloading process can unload the objects that have completed the set process on the second conveyor line. When the production process executed by the third production mechanism is in the latter half of all processes, especially near the end of the process, it is preferable to have it process the objects at the second connecting station. In this case, the objects at the first connecting station do not need to be processed by the production mechanism. When there are multiple production processes with the longest processing time, the positions of the production mechanisms can be adjusted so that only the production mechanism processing the objects on the first or second conveyor line can complete the processing multiple times. When there are two production processes with the longest processing time, if the order of the production processes is relatively close, such as one being process three and the other being process four, then two first connecting stations can be set up so that the production mechanisms of process three and process four process the objects at the first connecting stations in different positions. When the execution units of two production mechanisms interfere with each other due to their proximity, multiple first connecting stations can be set up to avoid mutual interference. It should be noted that the number of second connecting stations should be consistent with the number of first connecting stations so that the first and second conveyor lines can maintain a parallel layout while the material support unit is moved by the transition device in a direction perpendicular to the conveying direction.

[0015] Preferably, the number of items processed in a single operation by the production units processing items on the same conveyor line is the same.

[0016] In the above scheme, to optimize the manufacturing cost of the production mechanism as much as possible, the number of items processed per batch by the production mechanism processing the same items on the same conveyor line is made the same. This is because a typical production mechanism includes both loading and unloading processes. Since the loading and unloading conveyor lines are set up independently of the main conveyor system, the work trajectory of the execution unit of the loading and unloading production mechanism is a multi-degree-of-freedom cyclic trajectory. Therefore, its completion time is relatively shorter compared to other production mechanisms. For example, when the production line processes containers, in addition to the loading and unloading processes, it typically includes cleaning and filling processes. The production process involves loading and unloading inner caps, pressing caps, placing outer caps, and screwing caps on. These processes are typically completed through reciprocating motion in a straight line. Compared to loading and unloading, their travel trajectories are shorter, resulting in shorter working times. Therefore, the loading and unloading mechanism can grip multiple objects at once and place them in the corresponding conveyor line or connecting station's material support unit within a set time. However, this setup results in the loading and unloading mechanism occupying a significant amount of space. Therefore, when the ratio of the working time of the loading and unloading mechanism to the processing time of the longest-running mechanism is greater than or equal to 2, it is preferable to complete the loading and unloading process in multiple steps.

[0017] Preferably, the single dwell time of the first conveyor line and the second conveyor line during stepping is 1 / N times the dwell time of the object at the first connecting station, and the single stepping distance of the first conveyor line and the second conveyor line during stepping is 1 / N times the overall length of the object placed at the first connecting station.

[0018] Preferably, positioning devices are installed on the first connecting station, the second connecting station, and the third connecting station. The positioning devices include positioning blocks evenly distributed on the first connecting station, the second connecting station, and the third connecting station. After the first conveyor line, the second conveyor line, and the conveyor unit stop moving, the positioning blocks on each connecting station correspond one-to-one with the positioning blocks between the output end and the input end on the corresponding conveyor line or conveyor unit.

[0019] Preferably, the number of the first connecting stations is the same as the number of the second connecting stations.

[0020] In the above scheme, by setting the number of first connecting stations to be the same as the number of second connecting stations, firstly, the horizontal setting of the two conveyor lines is satisfied, and the material-carrying unit completes the cyclic conveying along mutually perpendicular movement trajectories; secondly, when there are two processes with the longest processing time, and these two processes are adjacent in process sequence, the two longest-running production mechanisms can process the objects at different positions of the first or second connecting stations. For example, in the existing container filling and packaging production, some processes may choose to fill different materials. When the filling time of the first material and the second material is the same or close, since the two processes are adjacent, they can both process the cleaned containers at the two first connecting stations with different filling processes. At the same time, when the execution unit of the production mechanism is limited by the interference of adjacent containers, the number of first connecting stations can be increased to process objects at different positions on the first connecting stations. It should be noted that when the conveying mechanism includes a first conveyor line and a second conveyor line, the number of first connecting stations must be the same as the number of second connecting stations.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The production line of this invention features a modular structure formed by independently setting up both the conveying mechanism and each production mechanism. This distinguishes it from the existing technology where the conveying mechanism and production mechanism are integrated. This allows the improved production line to rearrange the production mechanisms of each production process when faced with situations requiring changes in the processing sequence of some production mechanisms, the addition or removal of production mechanisms, or the rearrangement of processing sequences, without the need for disassembling the entire production line. Because the production mechanisms of the improved production line are connected to the conveying mechanism via a detachable structure, separation between the two is simpler and faster, aided by a dragging tool. The production units are moved from their original locations and quickly relocated to their new, pre-planned positions to complete the layout. Simultaneously, by processing the expected items, the overall length of the conveying mechanism is determined, and idle areas are planned to accommodate the addition or removal of production units when the number of processes varies. For example, in the process of washing, filling, pressing, and screwing containers, some containers require pressing before screwing, some require screwing before pressing, or some containers have only one processing step between pressing and screwing. The detachable design allows the order of production units to be changed according to different requirements, an advantage that integrated production lines do not possess.

[0022] Meanwhile, existing integrated production lines are difficult to repair or replace when they malfunction, requiring the entire production line to be shut down, which affects the overall production efficiency. In contrast, the production mechanism of this invention, which is detachably connected to the conveying mechanism, can be quickly moved out of the faulty workstation for offline repair or replacement. This modular design can shorten downtime and reduce production losses. Furthermore, the detachable production mechanism allows for offline maintenance, reducing operational complexity and safety risks. In turn, modular, detachable connections and replacements minimize downtime and lower overall maintenance costs.

[0023] 2. Compared with the prior art, the production line of the present invention, when processing objects, "completes the transportation of objects by intermittent movement of a single conveyor line, and then cooperates with multiple production mechanisms to complete multi-process processing of the transported objects"; Firstly, the layout of two conveyor lines and connecting workstations allows objects to move from one conveyor line to another. This enables multiple production units to process objects at connecting workstations on different conveyor lines. This setup, combined with the differences in processing time between different processes, allows the production unit with the longest processing time to process objects at connecting workstations, while other production units process objects conveyed on different conveyor lines. Through the time differences and their ratios, these production units can complete the same amount of processing as the longest-running production unit in a single operation through multiple processes. Simultaneously, based on a multiplier relationship, the number of execution units cooperating with the production units in these multiple-operation processes is reduced, thereby reducing the electrical control and other costs of the corresponding production units in subsequent processing. Furthermore, the layout of two conveyor lines reduces the footprint of the conveyor system.

[0024] 3. Compared with the prior art, the production line of the present invention, when processing objects, "sets up multiple interconnected conveyor lines to complete the conveying of objects, and the objects are moved to the downstream conveyor line for the next process after being processed on the upstream conveyor line, and then the production line is formed by completing all the set processes through different conveyor lines"; Firstly, the processing time of the shorter-time production mechanism is compared with that of the longest-time production mechanism. Based on the resulting multiple relationship and the sequence of production processes, other production mechanisms are allowed to perform multiple operations on objects on different conveyor lines, conveyor units, or third connecting stations to complete the same number of operations as the longest-time production mechanism in a single operation. This reduces the manufacturing cost and floor space of these production mechanisms. Furthermore, the layout of the conveyor mechanism with the first and second connecting stations allows the material-carrying units to move back and forth on the two conveyor lines to complete a cycle. This creates a closed-loop conveyor system, allowing production mechanisms that process objects to work on multiple conveyor lines without being limited to two separate lines. This enables them to arbitrarily set their processing positions when processing times change. Simultaneously, other production mechanisms can also leverage the time differences between different processes to allow those capable of multiple operations to process objects on the conveyor lines in sequence, achieving an even greater reduction in manufacturing costs.

[0025] 4. To address the challenges posed by factors such as the sequence of production processes, differences in processing time, cost optimization, and the overall footprint of the conveyor system, and to enable production units with shorter processing times to perform multiple processing steps, this invention modifies the structure of the first and / or second conveyor line by adding a corresponding third connecting station and a third transition device. This allows for changes in the sequence, processing time, or overall position of the production units due to changes in the processing requirements of the workpieces within several consecutive production units, thereby enabling... The production mechanism <2 can process the objects on the third connecting station. Multiple operations are achieved by repeatedly pushing the material support unit through the corresponding third transition device, avoiding the need for all these production mechanisms to be concentrated together for a single operation, which extends the overall length of the conveying mechanism and increases the cost of the corresponding production mechanism. At the same time, according to the structural form in which the first conveyor line or / and the second conveyor line are composed of at least two conveying units, the production efficiency of the production line for objects is further improved. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the closed-loop conveying structure of the material support unit in the production line of the present invention; Figure 2 This is a schematic diagram of the processing time ① in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the processing time ② in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the processing time ① in Embodiment 2 of the present invention; Figure 5 This is a schematic diagram of the processing time ② in Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of the structure of the first conveyor line after disassembly in Embodiment 3 of the present invention; Figure 7 This is a schematic diagram of the structure of the second conveyor line after disassembly in Embodiment 4 of the present invention; Figure 8 This is a schematic diagram of the disassembled structure of the first and second conveyor lines in Embodiment 5 of the present invention; Figure 9 This is a schematic diagram of the structure of a production line including a positioning device according to Embodiment Six of the present invention; Figure 10 This is a schematic diagram of the structure of Embodiment Six of the present invention.

[0027] In the diagram: 1. Object; 2. Material support unit; 21. Placement area; 3. Conveying mechanism; 31. First conveyor line; 32. Second conveyor line; 301. Conveying unit; 4. Production device; 41. First production mechanism; 42. Second production mechanism; 43. Third production mechanism; 401. Execution unit; 5. First connecting station; 6. Second connecting station; 7. First transition device; 8. Second transition device; 9. Third connecting station; 10. Third transition device; 11. Positioning device; 111. Positioning block. Detailed Implementation

[0028] In the following embodiments, the "multiple operations," "multiple processing," "multiple-times relationship," and the number of steps implied in the relative number of steps of the conveyor line in the production mechanism are based on the ratio of the processing time difference between different processes. The selection range, specific number of steps, and preferred value of the number of steps are determined according to the following steps: S1. First, based on the object 1 to be processed on the production line, determine the steps of the production process required to process the object 1 and the time required for each step; denoted as [Step 1], [Step 2], ... [Step n], and their corresponding processing times denoted as [Time]. [Working Hours] ]、... [Work Hours] ]; S2. Furthermore, based on whether there is a necessary sequence between the various production processes and their relative processing times, the production mechanism with the longest processing time processes the object 1 at the first connecting station 5 or the second connecting station 6, while the other production mechanisms process the objects 1 on different conveyor lines, thereby reducing the processing volume of a single operation by the production mechanism that processes objects 1 on at least one conveyor line. Compared to the processing volume N of the longest-running production unit, after The resulting ratio Greater than or equal to 2, its The value of is equivalent to the number of times these production mechanisms process a set of objects 1. This arrangement must minimize the processing time of the production mechanism that takes the longest time to process objects 1 on the conveyor line. ,For example Let t1 be the time interval between the longest working time T, for example, T = t2, where the ratio satisfies t2 / t1 ≥ 2; and It is an integer; In this step, taking into account practical factors, since there is usually only one longest processing time in all processes, when the longest processing time occurs or when parallel processes have the same time, the production mechanism with the longest processing time in all processes only processes the object 1 on the first connecting station 5 or the second connecting station 6, so that the production mechanism that processes the object 1 conveyed on the conveyor line can perform multiple operations. S3. Finally, calculate the range of possible number of operations based on the ratio between t1 and t2. When t2 / t1 ≥ 2, The value range is [2, floor(t2 / t1)], where floor() is a function that rounds down; In the above steps, considering the sequence requirements of the processing steps, a portion of the production mechanisms capable of multiple processing steps are used to process object 1 on the conveyor line. The preferred processing times for these production mechanisms are among these time ratios. The smallest integer value after rounding down; For example, production units with four production processes each process object 1 multiple times on two conveyor lines, and their two sets of time ratios... If the values ​​after rounding down from floor() are all 3, 4, 4, and 5, then the final number of processing steps is... The maximum number of selections is 3, and the minimum number of selections is 2. This ensures that these production units can complete processing during the intermittent waiting time of the conveyor line. The selection is then made between 2 and 3 based on the rate of reduction in manufacturing costs, the desired production efficiency, and the estimated cost. For specific selection values, please refer to the following examples. Based on the selected values ​​for the number of processing operations, when processing the object 1 on the first conveyor line 31 and the second conveyor line 32, the four production mechanisms... When both are set to 2, the step size of the first conveyor line 31 and the second conveyor line 32 is set to 1 / 2 of the length of the placement area of ​​the first connecting station 5 or the second connecting station 6; the step size refers to the distance that the conveyor line moves the part 1 each time, and the value of the number of conveyor line steps depends on the number of processing steps in S3. The final value of both is the same; To further improve the selection of the optimal number of processing operations, the above scheme can be further improved in the following way to adapt to different situations: when the actual processing time of the production mechanism for object 1 exceeds the standard time, the actual processing time is used instead of the standard time for calculation. The value is used to reallocate the number of execution units 401 to each production facility.

[0029] First, in the above scheme, the conveyor line uses intermittent motion to transport the object 1. The preferred intermittent waiting time is the longest processing time for the object 1 transported on the conveyor line, i.e., the standard time, so that the corresponding production unit can complete the processing of the object 1 within this period of time, and avoid the conveyor line starting the next transport before the object is finished. The processing time of the production mechanism that takes the longest to process the object 1 on the first conveyor line 31 or / and the second conveyor line 32. The ratio is compared with the processing time T of the longest-consuming production mechanism among all processes. When it is impossible to form values ​​greater than or equal to 2, the intermittent waiting time of the corresponding conveyor line can be extended. The extended intermittent waiting time can then be regarded as the longest processing time for processing the conveyed object 1 on that conveyor line. This can be used as the actual time to replace the standard time in the previous section. Then, by comparing the processing time of the production mechanism that processes the conveyed object 1 on another conveyor line with it, and referring to the comparison rules of the above scheme steps, the range of processing times can be selected, and the optimal value of processing times can be determined.

[0030] The following will use different embodiments to discuss the specific selection and preferred value of the number of processing times, as well as the value selection method under different working conditions. At the same time, the combined advantages brought about by the independent setting of the production device 4 and the conveying mechanism 3 will be discussed.

[0031] In the production lines of Examples 1 to 5 below, the object 1 is a container. The production process for container production is as follows: feeding, cleaning, filling, placing the cap, pressing the cap, placing the screw cap, screwing the cap, and unloading; a total of eight production processes, corresponding to processes one to eight in the attached drawings. In different embodiments, the positions of placing the cap, pressing the cap and placing the screw cap, screwing the cap can be interchanged, changing from "placing the cap, pressing the cap, placing the screw cap, screwing the cap" (in this case, the cap is the inner cap) to "placing the screw cap, screwing the cap, placing the cap, pressing the cap" (in this case, the cap is the outer cap).

[0032] Furthermore, the connection structure between the conveying mechanism 3 and the two connecting stations is the same in both Embodiment 1 and Embodiment 2, such as... Figure 1As shown, the conveying mechanism 3 includes a first conveying line 31 and a second conveying line 32 arranged in parallel. The first conveying line 31 and the second conveying line 32 are driven independently and convey the object 1 in a stepping manner with opposite conveying directions. A first connecting station 5 is provided between the output end of the first conveying line 31 and the input end of the second conveying line 32, and a second connecting station 6 is provided between the input end of the first conveying line 31 and the output end of the second conveying line 32. The material support unit 2 can move between the first conveying line 31 and the second conveying line 32 through the corresponding connecting station to complete the cyclic movement of the material support unit 2. The production device 4 includes at least one first production mechanism 41 for processing the object 1 on the first conveying line 31, at least one second production mechanism 42 for processing the object 1 on the second conveying line 32, and a third production mechanism 43 for processing the object 1 on the first connecting station 5 or the second connecting station 6. The processing time of the third production mechanism 43 is the longest among all production mechanisms.

[0033] (Example 1)

[0034] As one embodiment of the present invention, the processing time under two different operating conditions for container production is shown in the table below:

[0035] According to processing time ①, the longest production process among all production processes is the filling process, with a corresponding time T = 8 seconds. The filling process is located in the third stage of the production sequence, within the first half. When the conveying mechanism 3 conveys the material support unit 2 clockwise, the production mechanism corresponding to the filling process processes the object 1 on the first connecting station 5. At this time, the production mechanisms corresponding to processes one and two process processes the object 1 on the first conveyor line 31, and processes four to eight process the object 1 on the second conveyor line 32. The longest processing time among the production mechanisms processing the object 1 on the first conveyor line 31 is 5 seconds, and the longest processing time among the production mechanisms processing the object 1 on the second conveyor line 32 is 5 seconds, and there are two such production mechanisms. Calculate the multiple values ​​for processing item 1 on the first conveyor line 31 and the second conveyor line 32. Since 8 / 5 < 2, the multiple condition is not met. Therefore, the quantity processed per operation is the same for all production mechanisms. ratio All are 1; At this time, as Figure 2 As shown, during production on the production line, the material support unit 2 is first placed in the corresponding position. The intermittent dwell time between the first conveyor line 31 and the second conveyor line 32 is set to 5 seconds. The preferred intermittent movement time is 8-5=3 seconds, or the movement time can be made close to 3 seconds. Assuming the intermittent movement time is 3 seconds, due to the ratio... Since both ratios are 1, the distance that the material support unit 2 moves with each step of the first conveyor line 31 and the second conveyor line 32 is equal to the distance of the placement area on the first connecting station 5, thus starting the automated operation of the equipment. Since both steps are 1, the stepping frequencies of the first conveyor line 31 and the second conveyor line 32 are both 5, 3, 5, 3... cycles, satisfying the necessary and sufficient condition for the material support unit 2 cycle: the set number of steps of the first conveyor line 31. (Intermittent dwell time of the first conveyor line 31 + Intermittent movement time of the first conveyor line 31) = Set number of steps of the second conveyor line 32 (Intermittent dwell time of the second conveyor line 32 + intermittent movement time of the second conveyor line 32) ≥ the longest processing time among all processes, where The ratio of the number of items taken from the number of processing items, its value is... The final value is consistent; assuming that the number of objects 1 processed in a single operation is eight, after the production line starts running, the production mechanism that has completed the loading process places the eight containers in the placement area 21 of the material support unit 2 during the interval of the first conveyor line 31. After the first conveyor line 31 stops for 5 seconds, it starts to move for 3 seconds. The first conveyor line 31 drives the material support unit 2 carrying the containers to the next production station, so that the production mechanism of the cleaning process cleans the containers. The containers that have been cleaned move towards the output end of the first conveyor line 31. The eight containers carrying the cleaned containers at the output end of the first conveyor line 31 are manually moved to the first connecting station 5. The eight containers that have been filled at the first connecting station 5 are manually moved to the input end of the second conveyor line 32. Yes, the material support unit 2 that has completed unloading on the second conveyor line 32 is manually moved from the output end to the second connecting station 6. The original material support unit 2 at the second connecting station 6 is then moved to the input end of the first conveyor line 31. After the first conveyor line 31 and the second conveyor line 32 move, the empty material support unit 2 moves to the processing position of the feeding process production mechanism to complete the feeding process. The material support unit 2 that has completed the capping process and the container it carries move to the processing position of the unloading process production mechanism to complete the unloading process. As the two conveyor lines stop moving, the manual operation completes the movement of the material support unit 2 at the output end of the two conveyor lines, so that the material support unit 2 can achieve closed-loop cyclic conveying between the two conveyor lines through the corresponding connecting stations, thereby driving the container to complete the conveying and being processed by the corresponding production mechanism at each set processing position. The design of the first connecting station 5 and the second connecting station 6 changes the trajectory path of the material support unit 2 and its object 1 from one conveyor line to another. This allows the material support unit 2 to be moved to the corresponding connecting station and the other conveyor line in a direction perpendicular to the conveyor line's conveying direction, thus completing the transfer of the material support unit 2. Since the speed of the conveyor line is set, the longer the distance the material support unit moves, the longer the movement time. However, when the material support unit is moved in a direction perpendicular to the conveyor line's conveying direction, its movement time is a fixed value regardless of the length of the material support unit. Furthermore, the object on the first connecting station 5 does not move with the intermittent movement of the first conveyor line 31 and the second conveyor line 32. This allows for the optimization of the overall length of the first conveyor line 31 and the second conveyor line 32 based on the time ratio when there are large differences in production processing time. It also allows for the optimization of the corresponding production mechanism to control costs and manufacturing costs, and reduces the overall length of the production line.

[0036] According to processing time ②, the longest production process among all production processes is the filling process, with a corresponding time T = 8 seconds. The filling process is located in process three, within the first half of the production sequence. When the conveying mechanism 3 is conveying the material support unit 2 clockwise, the production mechanism corresponding to the filling process processes the object 1 on the first connecting station 5. At this time, the production mechanisms corresponding to processes one and two process one process the object 1 on the first conveyor line 31, and processes four to eight process the object 1 on the second conveyor line 32; the first conveyor line... The longest processing time for the production mechanism processing item 1 on conveyor line 31 is 5 seconds. The longest processing time for the production mechanism processing item 1 on conveyor line 32 is also 5 seconds. However, this process is the unloading process and is the last of all production processes. The longest processing time among processes four to seven is 4 seconds, which is a multiple of the longest processing time of 8 seconds. Since 8 / 4 = 2, the condition for multiple processing is met. Therefore, the unloading process's production mechanism unloads the container-carrying unit 2 on the second connecting station 6. At this time, according to... Calculate the multiple processing times for object 1 on the first conveyor line 31 and the second conveyor line 32. The processing time of the production mechanism that takes the longest to process object 1 on the first conveyor line 31 is 5 seconds. Therefore, 8 / 5 is less than 2, which does not meet the condition for multiple processing times. The processing time of the production mechanism that takes the longest to process object 1 on the second conveyor line 32 is 4 seconds. =8 / 4 = 2, which satisfies the condition for multiple operations; At this time, as Figure 3As shown, during production on the production line, the material support unit 2 is first placed in the corresponding position. The intermittent dwell time of the first conveyor line 31 is set to 5 seconds, and the intermittent dwell time of the second conveyor line 32 is set to 4 seconds. Since the production mechanism for processing the object 1 on the second conveyor line 32 needs to process it twice, that is... The value and The values ​​are all the same and both are 2. Therefore, based on the cycle time of material handling unit 2, it is necessary to make 1 (Intermittent dwell time of the first conveyor line 31 (5 seconds) + intermittent movement time of the first conveyor line 31) = set number of steps of the second conveyor line 32 (2) (The intermittent dwell time of the second conveyor line 32 is 4 seconds + the intermittent movement time of the second conveyor line 32) ≥ the longest processing time in all operations. According to the above requirements, the intermittent movement time is 3 seconds. However, since the second conveyor line 32 needs to move twice to reach the distance that the first conveyor line moves once, the movement time of the second conveyor line 32 each time is 1.5 seconds. Therefore, the movement time of the first conveyor line 31 is 6 seconds. Thus, the stepping frequency of the first conveyor line 31 is 5, 6, 5, 6... in a cycle, and the stepping frequency of the second conveyor line 32 is 4, 1.5, 4, 1.5, 4, 1.5, 4, 1.5... in a cycle, making 1 (5+6)=2 (4+1.5)≥8; The condition for the material support unit 2 cycle is that the movement time of the first conveyor line 31 is 6 seconds, which is longer than the movement time of 3 seconds in processing time ①. Therefore, the number of objects 1 processed in a single operation can be greater than the number processed in a single operation in processing time ①. This allows for moving a greater distance in 6 seconds at the same speed, thereby enabling the movement of more containers and increasing the number of materials supplied to the downstream conveyor line, thus increasing the production capacity of the production line. Since the production mechanism for processing objects 1 on the second conveyor line 32 needs to work twice to complete the processing of a set number of objects 1, the number of objects 1 processed in a single operation by the production mechanism for processing objects 1 on the first conveyor line 31, the first connecting station 5, and the second connecting station 6 is a multiple of 2. Assuming that the number of objects 1 processed in a single operation by these production mechanisms is eight, then the number of objects 1 processed in a single operation by the production mechanism for processing objects 1 on the second conveyor line 32 is four, that is... =2, at this time It also equals 2; Therefore, after the production line starts running, during the interval of the feeding process on the first conveyor line 31, the production mechanism that has completed the feeding process places eight containers in the placement area 21 of the material support unit 2. After the first conveyor line 31 stops for 5 seconds, it begins to move for 6 seconds, moving the material support unit 2 carrying the containers to the next processing station. This allows the production mechanism of the cleaning process to clean the containers. The eight containers that have completed the cleaning process move towards the output end of the first conveyor line 31. The eight containers carrying the cleaned containers at the output end of the first conveyor line 31 are then manually moved to the first connecting station 5. The eight containers that have completed the filling process at the first connecting station 5 are then manually moved to the input end of the second conveyor line 32. Correspondingly, the material support unit 2 that has completed the unloading process at the second connecting station 6 is then manually moved to the input end of the second conveyor line 32. The workpiece moves to the input end of the first conveyor line 31, and the material support unit 2 carrying the container that has completed the capping process at the output end of the second conveyor line 32 is moved to the second connecting station 6. Since the production mechanism that processes the object 1 on the second conveyor line 32 needs to work twice to complete the processing amount of the other production mechanisms in one work, the distance that the second conveyor line 32 moves the container each time is only half the single step distance of the first conveyor line 31. This allows the corresponding production mechanism to complete two processing steps after the second conveyor line 32 moves twice. After the second movement, the manual operation of the material support unit 2 is completed, so that the material support unit 2 can achieve closed-loop cyclic conveying between the two conveyor lines through the corresponding connecting station, thereby driving the container to complete the conveying and being processed by the corresponding production mechanism at each set processing position. The design of the first connecting station 5 and the second connecting station 6 changes the trajectory path of the material support unit 2 and its object 1 from one conveyor line to another. This allows the material support unit 2 to be moved to the corresponding connecting station and the other conveyor line in a direction perpendicular to the conveyor line's conveying direction, thus completing the transfer of the material support unit 2. Since the speed of the conveyor line is set, the longer the distance the material support unit 2 moves, the longer the movement time. However, when the material support unit 2 is moved in a direction perpendicular to the conveyor line's conveying direction, its movement time is a fixed value regardless of how long the material support unit 2 is. Furthermore, the object 1 on the first connecting station 5 does not move with the intermittent movement of the first conveyor line 31 and the second conveyor line 32. This allows for the optimization of the overall length of the first conveyor line 31 and the second conveyor line 32 based on the time ratio when there are large differences in production processing time. It also allows for the optimization of the corresponding production mechanism to control costs and manufacturing costs, and reduces the overall length of the production line.

[0037] (Example 2)

[0038] As one embodiment of the present invention, compared with Embodiment 1, the sequence of some production processes and their production time have changed. The processing times for the two working environments in container production are shown in the table below:

[0039] According to processing time ①, the longest production process among all production processes is the filling process, with a corresponding time T = 8 seconds. The filling process is located in process three, within the first half of the production sequence. When the conveying mechanism 3 is conveying the material support unit 2 clockwise, the production mechanism corresponding to the filling process processes the object 1 on the first connecting station 5. At this time, the production mechanisms corresponding to processes one and two process one process the object 1 on the first conveyor line 31, and processes four to eight process the object 1 on the second conveyor line 32. The longest processing time among the production mechanisms processing the object 1 on the first conveyor line 31 is 4 seconds. Calculate the multiple of processing times for object 1 on the first conveyor line 31. Since 8 / 4 = 2 = = This constitutes a doubling condition, thus ensuring that the number of production mechanism execution units 401 processing object 1 on the first connecting station 5 is twice the number of production mechanism execution units 401 processing object 1 on the first conveyor line 31. The longest processing time for the production mechanism processing object 1 on the second conveyor line 32 is 5 seconds, and this is the last production step. The longest processing time for the remaining steps four to seven is 3 seconds. =8 / 3≈2.6, rounded down to 2, at this point and Take 2; to form a multiple processing condition, in order to enable some production mechanisms to achieve multiple processing as much as possible, the production mechanism of process eight processes the object 1 on the second connecting station 6, so that all production mechanisms except process eight and process three can perform multiple processing, and the number of processing operations per operation by the production mechanism processing the object 1 on the two connecting stations is a multiple of the number of processing operations per operation by the other production mechanisms. ratio Both are 2; At this time, as Figure 4 As shown, during production on the production line, the material support unit 2 is first placed in the corresponding position. The intermittent dwell time of the first conveyor line 31 is set to 4 seconds, and the intermittent dwell time of the second conveyor line 32 is set to 3 seconds. Due to the... and Both are taken as 2, based on 2 (4 + Intermittent travel time of the first conveyor line 31) = 2 (3 + second conveyor line 32 intermittent movement time) ≥ 8 seconds. Based on the preset single processing time, the preferred movement time of the first conveyor line 31 is 8 - 4 = 4 seconds. Therefore, the intermittent movement time of the first conveyor line 31 is 2 seconds, and the gap movement time of the second conveyor line 32 is 3 seconds. Assuming that the production mechanism that completes the set process for object 1 at the first connecting station 5 and the second connecting station 6 processes eight containers at a time, while the other production mechanisms process four containers at a time, then each step of the first conveyor line 31 and the second conveyor line 32 causes the corresponding production mechanism to process four containers. After the second step of the first conveyor line 31 and the second conveyor line 32, the corresponding production mechanism processes the other four containers in that group. At this time, the eight containers that have completed the cleaning process at the output end of the first conveyor line 31 and the eight containers that have completed the capping process at the output end of the second conveyor line 32 will be manually moved between the two conveyor lines. During the pause, the container is pushed to the corresponding connecting station. Since the processing time of the original filling and unloading processes at the two connecting stations is equal to or less than twice the processing time of the upstream conveyor line plus twice the movement time, these two processes are completed when the material support unit 2 completes its cycle preparation. Therefore, the material support unit 2 at the corresponding connecting station is manually moved to the input end of the corresponding conveyor line to complete the cycle of the material support unit 2. This allows the container filled from the first connecting station 5 to enter the second conveyor line 32 and, with the next step of the second conveyor line 32, reach the processing position of the capping process production mechanism to complete the process. Meanwhile, the material support unit 2 and its object 1 unloaded from the second connecting station 6 enter the first conveyor line 31 and, with the next step of the first conveyor line 31, move to the processing position of the loading process, where the corresponding production mechanism loads them.

[0040] According to processing time ②, the longest production process among all production processes is the cap placement process, with a corresponding time T = 6 seconds. This process is located in process six, in the latter half of the production sequence. When the conveyor mechanism 3 is conveying the material support unit 2 clockwise and the production mechanism of process one completes the loading process for the material support unit 2 on the first conveyor line 31, in order for these eight production mechanisms to process the object 1 on the first conveyor line 31, the second conveyor line 32, and any connecting station respectively, considering the processing time of the other seven production mechanisms... Compared to the longest production time T, by Calculated All are greater than or equal to 2, meeting the condition for double processing. Therefore, according to the requirement that when the production mechanism of process one completes the feeding process of the material support unit 2 on the first conveyor line 31, the production mechanism corresponding to the cap placement process must process the object 1 on the second connecting station 6. The production mechanisms of the remaining production processes are distributed in sequence, arranged with the same or nearly the same number of processes, so that three production mechanisms on each of the first and second conveyor lines 31 and 32 process the object 1. Since the remaining seven production mechanisms can all complete double processing, one production mechanism can process the object 1 on the first connecting station 6. The object 1 at position 5 is processed, and the number of objects 1 that stay at the first connecting station 5 at a time is half the number of objects 1 that stay at the second connecting station 6 at a time. Since the object 1 is placed in the material support unit 2 and moves with the material support unit 2, it is preferable that only one object 1 is placed in one material support unit 2. Alternatively, the number of material support units 2 that carry a group of objects 1 is the same as the value of the processing multiple times. For example, in this scheme, the value of the processing multiple times is 2, so two material support units are needed to carry a group of objects 1, and the number of objects 1 carried by each material support unit 2 is the same. At this time, as Figure 5 As shown, the production mechanisms corresponding to processes seven, eight, and one complete the corresponding processes for the material support unit 2 on the first conveyor line 31. Process two processes the object 1 on the first connecting station 5. Processes three to five process the object 1 on the second conveyor line 32. Process six processes the object 1 on the second connecting station 6. During production, the material support unit 2 is first placed in the corresponding position. The intermittent dwell time of the first conveyor line 31 is set to 3 seconds, and the intermittent dwell time of the second conveyor line 32 is also set to 3 seconds. These are the longest processing times for the corresponding production mechanisms, ensuring that all six production mechanisms can complete the corresponding processing within this dwell time. Since the processing time of process six is ​​the longest among all processes, the cumulative processing time of the upstream conveyor line is 2 according to the multiplier value of 2. 3 = 6 seconds, which is equal to the processing time of process six. Therefore, by setting a doubling of the movement time, the operation of the two conveyor lines is made to meet the 2 (3 + intermittent travel time of the first conveyor line 31) = 2 (3 + intermittent movement time of the second conveyor line 32) ≥ 6 seconds. Therefore, based on the values ​​in the above embodiments, the shortest intermittent movement time of the corresponding conveyor line is set. Assuming that the intermittent movement time of the first conveyor line 31 and the second conveyor line 32 is 1.5 seconds, when the conveyor mechanism 3 is running, assuming that the production mechanism of process six processes eight objects 1 at a time, the distance of each step of the first conveyor line 31 and the second conveyor line 32 is half the length of the object 1 placed on the second connecting station 6. After the object 1 driven by it moves this distance, it is processed by the corresponding production mechanism. At this time, the material support unit 2 that has completed the loading process moves to the output end of the first conveyor line 31 and also completes the corresponding processing of the container that has completed process three on the first connecting station 5. This allows the manual to place the first conveyor line 31 within the intermittent dwell time between the two conveyor lines. The material support unit 2 at the output end and its object 1 are moved to the first connecting station 5, and the object 1 and its material support unit 2 at the first connecting station 5 are moved to the input end of the second conveyor line 32. After the first conveyor line 31 and the second conveyor line 32 move again, the object 1 at the second connecting station 5 has completed the corresponding process. At this time, during the intermittent dwell time of the two conveyor lines, the manual moves the object 1 at the output end of the first conveyor line 31 to the first connecting station 5, the object 1 at the first connecting station 5 is moved to the input end of the second conveyor line 32, the object 1 at the second connecting station 6 is moved to the input end of the first conveyor line 31, and the object 1 at the output end of the second conveyor line 32 is moved to the second connecting station 6, so that the material support unit 2 completes the cycle, thereby carrying the object 1 to complete the conveying and perform the corresponding process.

[0041] (Example 3)

[0042] As one embodiment of the present invention, compared with Embodiment 1 and Embodiment 2, as follows: Figure 6 As shown, when the processing time of the production process changes significantly, the structure of the conveying mechanism 3 and the connecting station needs to be changed accordingly. Therefore, the structure of the conveying mechanism 3 of the material conveying unit 2 in Embodiments 3 to 5 changes as follows: By improving the structure of the first conveyor line 31, it is made to consist of at least two conveyor units 301. A third connecting station 9 is set between the output and input ends of two adjacent conveyor units 301, and a third transition device 10 is set at the corresponding position to move the material-carrying unit 2 from the output end of the upstream conveyor unit 301 to the corresponding third connecting station 9, and to move the material-carrying unit 2 on the original third connecting station 9 to the input end of the downstream conveyor unit 301. The third transition device 10 can be manual or a corresponding device. The processing time for container production in one production cycle is shown in the table below:

[0043] According to the processing times shown in the table above, the longest processing step in all production processes is the filling process, with a time T = 8 seconds. The filling process is located in the third stage of the production sequence, within the first half of the production order. When the conveyor mechanism 3 is conveying the material support unit 2 clockwise and the production mechanism of process two is processing the object 1 on the first conveyor line 31, the production mechanism corresponding to the filling process processes the object 1 on the first connecting station 5. Because the processing time of process two... Compared to the processing time T of process three, the conditions for double processing cannot be met; while for processes four through eight, except for process eight, the processing time of the other processes is... Compared to the processing time T of process three, the ratio is greater than or equal to 2, constituting the condition for double processing. Therefore, process eight completes the unloading process for the object 1 on the second connecting station 6. To prevent the production mechanisms of processes one and two from processing the object 1 on the first conveyor line 31, the first conveyor line 31 is split into two conveyor units 301, and a third connecting station 9 is added between the two conveyor units 301. This allows the production mechanism of process two to process the object 1 on the third connecting station 9, and the production mechanism of process one to complete the loading process for the material support unit 2 on the upstream conveyor unit 301. Since there are only two processes before process three, no production mechanism is set up on the downstream conveyor unit 301. However, the stepping frequency of the downstream conveyor unit 301 needs to be consistent with that of the upstream conveyor unit 301. The material handling unit 2 needs to be cycled between the conveying unit 301 and the second conveyor line 32. Therefore, the intermittent dwell time and intermittent movement time of the conveying unit 301 need to be set accordingly. Since the processing time of process one is 4 seconds, it is preferable that the intermittent dwell time of both conveying units 301 is 4 seconds. The processing time of the longest production mechanism among processes four to seven is 4 seconds. Therefore, the single intermittent dwell time of the second conveyor line 32 is 4 seconds. The processing time of the object 1 on the third connecting station 9 is 5 seconds. Thus, the intermittent movement time of both conveying units 301 and the second conveyor line 32 is 1.5 seconds. This ensures that the single intermittent dwell time of the conveying unit 301 plus the intermittent movement time is ≥ 5 seconds, so that the object 1 on the third connecting station 9 can be processed, and the 2 (Single intermittent dwell time + single intermittent movement time) ≥ 8 seconds, allowing object 1 on the first connecting station 5 to complete processing, while object 2 on the second conveyor line 32... (Single intermittent dwell time + single intermittent movement time) = 2 of conveyor unit 301 (Single intermittent dwell time + single intermittent movement time) > 5 seconds, so that the object 1 on the second connecting station 6 completes the unloading process; During production on the production line, such as Figure 6As shown, the material support unit 2 is first placed in the corresponding position. After each step of the upstream conveying unit 301, the material support unit 2 at its output end is moved to the third connecting station 9. The material support unit 2 and its container that have completed the second process at the third connecting station 9 are then moved to the input end of the downstream conveying unit 301. When the conveying unit 301 moves for the next time, the third transition device 10 or a person moves the material support unit 2 at its output end to the third connecting station 9. The material support unit 2 and its container that have completed the second process at the third connecting station 9 are then moved to the input end of the downstream conveying unit 301. The material support unit 2 and its object 1 at the output end of the downstream conveying unit 301 are then moved to the first connecting station 5. The object 1 and its material support unit 2 at the first connecting station 5 are then moved to the input end of the second conveying line 32. When the conveying unit... After stepping twice, the second conveyor line 32 also steps twice. During the intermittent dwell time between the second conveyor line 32 and the corresponding conveyor unit 301, the operator moves the object 1 and its supporting unit 2 at the output end of the second conveyor line 32 to the second connecting station 6 to complete the unloading process. The supporting unit 2, which has been unloaded at the second connecting station 6, is then moved to the upstream conveyor unit 301. As the upstream conveyor unit 301 moves, it moves to the processing position of process one to complete the loading process. During this process, the supporting unit 2 moves from the upstream conveyor unit 301 to the downstream conveyor unit 301 via the third connecting station 9, and then enters the second conveyor line 32 via the first connecting station 5. It then moves to the upstream conveyor unit 301 via the second connecting station 6, completing the cyclic movement of the supporting unit 2 and carrying the object 1 to complete all the set processes.

[0044] (Example 4)

[0045] As one embodiment of the present invention, compared with Embodiment 1 and Embodiment 2, as follows: Figure 7 As shown, when the processing time of the production process changes significantly, the structure of the conveying mechanism 2 and the connecting station needs to be changed accordingly. Therefore, the structure of the conveying mechanism 3 of the material conveying unit 2 in Embodiments 3 to 5 changes as follows: By improving the structure of the second conveyor line 32, it is made to consist of at least two conveyor units 301. A third connecting station 9 is set between the output and input ends of two adjacent conveyor units 301, and a third transition device 10 is set at the corresponding position to complete the movement of the material support unit 2 from the output end of the upstream conveyor unit 301 to the corresponding third connecting station 9, and to move the material support unit 2 on the original third connecting station 9 to the input end of the downstream conveyor unit 301. The third transition device 10 can be manual or a corresponding device. The processing time for container production in one production cycle is shown in the table below:

[0046] According to the processing time shown in the table above, the longest processing step in all production processes is the filling process, with a time of T = 8 seconds. The filling process is located in the third process, which is in the first half of the production sequence. When the conveying mechanism 3 is conveying the material support unit 2 clockwise and the second process is processing the object 1 on the first conveying line 31, the production mechanism corresponding to the filling process processes the object 1 on the first connecting station 5. The longest processing time in processes four to eight is 5 seconds, and there are two of them. Moreover, these two processes are not consecutive. Therefore, the eighth process completes the unloading process for the object 1 on the second connecting station 6. At this time, the second conveying line 32 is divided into two conveying units 301. A third connecting station 9 is set between these two conveying units 301 to place the object 1 and its material support unit 2 that move from the upstream conveying unit 301 to the downstream conveying unit 301. The sixth process processes the object 1 on the third connecting station 9. During production on the production line, such as Figure 7 As shown, the material support unit 2 is first placed in the corresponding position. Assuming that the production mechanism of process three processes eight objects 1 at a time, and setting the dwell time and movement time of the first conveyor line 31 and the conveyor unit 301, since the longest processing time in processes one and two is 4 seconds, the intermittent dwell time of the first conveyor line 31 is 4 seconds. The longest processing time in processes four to eight is 5 seconds, and there are two such processes. At this time, process eight completes the unloading process for the object 1 on the second connecting station 6. In this embodiment, the second conveyor line 32 is split into two conveyor units 301, and a third connecting station 9 is set between the two conveyor units 301, so that the production mechanism of process six processes the object 1 on the third connecting station 9. Processes four and five process the object 1 on the upstream conveyor unit 3301, and process seven processes the object 1 on the downstream conveyor unit 301. Since the longest processing time in processes four and five is 3 seconds, that is... The value is 3, at this time =8 / 3=2 (rounded down), forming a doubling condition; the processing time of process seven is 2 seconds. According to 8 / 2=4, a doubling condition is formed. Therefore, the actuator processing containers on the upstream conveyor unit 301 can complete the processing of eight containers in two operations. When the production mechanism of process seven processes containers on the downstream conveyor unit 301, it can choose to complete the processing of eight containers in four operations or in two operations. At this time, the intermittent dwell time of the conveyor unit 301 is 2 seconds. Based on the processing time of the production mechanism with the longest time consumption, the intermittent movement time of the upstream conveyor line 301 is estimated. According to 2 (4 + the gap and movement time of the first conveyor line 31) ≥ 8 seconds, and combined with 2 (4 + travel time due to gaps in the first conveyor line 31) = 2 (3 + intermittent travel time of upstream conveyor unit 301) = 2 (2 + intermittent travel time of downstream conveyor unit 301) or 4 (2 + intermittent movement time of downstream conveyor unit 301), and 3 + intermittent movement time of upstream conveyor unit 301 ≥ 5 seconds; when the production mechanism of process seven processes in two steps, 2 + intermittent movement time of downstream conveyor unit 301 ≥ 5 seconds; when the production mechanism of process seven processes in four steps, 2 (2 + intermittent movement time of downstream conveying unit 301) ≥ 5 seconds; so that during the intermittent dwell time + intermittent movement time of upstream conveying unit 301, the workpiece 1 at the corresponding connecting station is completed. At this time, it is estimated that the intermittent movement time of the first conveying line 31 is preferably 1.5 seconds, the intermittent movement time of upstream conveying unit 301 is 2.5 seconds, and the intermittent movement time of downstream conveying unit 301 is 3.5 seconds (processing in two parts of process 7) or 1.75 seconds (processing in four parts of process 7). When the production mechanism of process seven processes in two steps: The first conveyor line 31 advances once, and the production mechanisms of processes one and two process four containers each time. After the next advance, another four containers are processed, thus completing the processing of a set of containers. At this time, the containers on the first connecting station 5 have completed the processing of process three. The manual operator moves the eight containers and their supporting units 2 from the output end of the first conveyor line 31 to the first connecting station 5, while the eight containers and their supporting units 2 on the first connecting station 5 are moved to the input end of the upstream conveyor unit 301. During the advancement of the first conveyor line 31, the upstream and downstream conveyor units 301 also complete corresponding advancement movements. The upstream conveyor unit 301 advances once, and the production mechanisms of processes four and five process four containers each time. After one movement, the production mechanisms of process four and process five respectively transport the four containers in the corresponding processing area to the conveying unit 301 for processing. During this process, the manual moves the container and its material support unit 2 at the output end of the upstream conveying unit 301 to the third connecting station 9. The container at the third connecting station 9 has also completed the processing of process six and is manually moved to the input end of the downstream conveying unit 301. The four containers at the downstream conveying unit 301 that have completed the processing of process seven are manually moved to the second connecting station 6. The four containers at the second connecting station 6 have also completed the unloading process. The manual moves the empty material support unit 2 to the input end of the first conveying line 31. Then, after moving with the stepping movement of the first conveying line 31, it moves to the processing position of process one to complete the loading process and then starts a new cycle.

[0047] The difference between the production mechanism of process seven and the above is that the object 1 on the downstream conveying unit 301 can only be manually moved to the second connecting station 6 after the processing of the four containers is completed in process seven.

[0048] (Example 5)

[0049] As one embodiment of the present invention, such as Figure 8 As shown, compared to Embodiment 1 and Embodiment 2, when the processing time of the production process changes significantly, the structure of the conveying mechanism 3 and the connecting station needs to be changed accordingly. Therefore, the structure of the conveying mechanism 3 of the conveying and supporting unit 2 in Embodiments 3 to 5 changes as follows: By improving the structure of the first conveyor line 31 and the second conveyor line 32, each is composed of at least two conveying units 301. A third connecting station 9 is set between the output and input ends of two adjacent conveying units 301, and a third transition device 10 is set at the corresponding position to move the material-carrying unit 2 from the output end of the upstream conveying unit 301 to the corresponding third connecting station 9, and to move the material-carrying unit 2 on the original third connecting station 9 to the input end of the downstream conveying unit 301. The third transition device 10 can be manual or a corresponding device. The processing time for a container manufacturing process is shown in the table below:

[0050] According to the processing times shown in the table above, the longest production process is the filling process, with a time T = 8 seconds. The filling process is located in the third stage of the production sequence, within the first half of the production order. When the conveying mechanism 3 is conveying the material support unit 2 clockwise and the second stage processes the object 1 on the first conveyor line 31, the production mechanism corresponding to the filling process processes the object 1 on the first connecting station 5. At this time, according to the table above... The ratio of the two processes satisfies the condition of double processing for the production mechanism of process one. If the production mechanism of process two processes the same object 1 on the same conveyor line as the production mechanism of process one, then the condition of double processing is not satisfied. Among the remaining processes, processes four, six, and seven satisfy the condition of double processing, while processes five and eight do not satisfy the condition of double processing. Thus, the production mechanism of process four processes the object 1 on the upstream conveyor unit 301 obtained by splitting the second conveyor line 32. Process five processes the object 1 on the third connecting station 9 corresponding to the output end of the conveyor unit 301. The production mechanisms corresponding to processes six and seven process the object 1 on the downstream conveyor unit 301 obtained by splitting the second conveyor line 32. The production mechanism of process eight completes the unloading process for the four containers that have moved to the second connecting station 6 between the downstream conveyor unit 301 and the upstream conveyor unit 301 obtained by splitting the first conveyor line 31.

[0051] During production on the production line, such as Figure 8 As shown, first place the material support unit 2 in the corresponding position. Assuming that the number of objects 1 processed by the production mechanism of process three at a time is 8, and setting the intermittent dwell time and intermittent movement time of the conveyor units 301 divided by the two conveyor lines, it can be seen from the processing time of each production process in the table above that, according to the arrangement of the process sequence, since the processing time of process one meets the requirements... =2, thus satisfying the condition of double processing, enabling the production mechanism of process one to complete the feeding process of the material support unit 2 on the upstream conveying unit 301 of the first conveying line 31, so that the intermittent dwell time of the upstream conveying unit 301 is 4 seconds; the production mechanism of process two to complete the cleaning process of the object 1 on the third connecting station 9 between the upstream conveying unit 301 and the downstream conveying unit 301, so that process two completes the corresponding process within the sum of the intermittent dwell time of the upstream conveying unit 301 and the intermittent movement time; the production mechanism of process three to complete the filling process of the object 1 on the first connecting station 5. Since no production mechanism processes the object 1 on the downstream conveying unit 301, the intermittent dwell time and movement time of the downstream conveying unit 301 are consistent with those of the upstream conveying unit 301, so that process three completes the corresponding process within the sum of the intermittent dwell time of the upstream conveying unit 301 and the intermittent movement time of the downstream conveying unit 301. The corresponding work is completed within (4 + intermittent movement time of conveyor unit 301); because the processing time of process four meets the requirements. =2, thus satisfying the condition for double processing, enabling the production mechanism of process four to perform the capping process on object 1 on the upstream conveyor unit 301 of the second conveyor line 32; since the processing time of process five is 5 seconds, its The value is less than 2, which does not meet the condition for multiple processing cycles. Therefore, the object 1 on the third connecting station 9 between the upstream and downstream conveying units 301 is capped, and the corresponding processing cycle is completed within the single intermittent dwell time of the upstream conveying unit 301 plus the movement time. Because the ratio of the processing times of processes six and seven is... Both are ≥2, and in order to enable double processing, the production mechanisms of both processes complete the corresponding production processing of the object 1 on the downstream conveying unit 301. According to the preferred setting, the number of items processed by the production mechanisms processing the object 1 on the same conveying unit 301 is the same in a single operation. Therefore, the production mechanisms of both processes complete the production processing of a set of containers through two processing operations. Since the production mechanism for processing the object 1 on the downstream conveying unit 301 split from the second conveying line 32 completes double processing in two operations, while the production mechanism for processing the upstream conveying unit 301 split from the first conveying line 31 completes double processing in two operations... The production mechanism for processing object 1 on conveying unit 301 also completes the processing twice. Therefore, when process eight completes the unloading process for object 1 on the second connecting station 6, its single work quantity is half of the single work quantity of the filling process production mechanism. At this time, the working time of the unloading process needs to be shorter than or equal to the sum of the single intermittent dwell time and movement of the downstream conveying unit 301 split from the second conveying line 32. When this condition is not met, the single unloading quantity completed by the production mechanism of process eight needs to be consistent with the single filling quantity of the filling process production mechanism. Based on the processing time of the object 1 on different conveying units 301 and the processing time of the object 1 on each connecting station, the intermittent movement time of each conveying unit 301 is calculated. This yields the time condition for the material support unit 2 to complete its cyclic movement. Based on the longest processing time of 8 seconds in all processes and the longest processing time before that process of 5 seconds, the difference in processing time is calculated: 8 - 5 = 3 seconds. According to the multiple movement relationship, the intermittent dwell time of both the upstream and downstream conveying units 301 of the first conveyor line 31 is 4 seconds, and the intermittent movement time is 1.5 seconds, ensuring that 4 + 1.5 ≥ 5 seconds. This allows the production mechanism of process two to complete processing within this time; and also ensures that 2 (4+1.5)≥8 seconds, allowing the production mechanism of process three to complete processing within this time; the intermittent dwell time of the upstream conveyor unit 301 split from the second conveyor line 32 is 3 seconds, so its intermittent movement time is 2.5 seconds. After the object 1 and its supporting unit 2 on the first connecting station 5 are manually moved to the upstream conveyor unit 301, the sum of the two intermittent movement times and the single intermittent dwell time can free up space at the input end of the conveyor unit 301, so that the object 1 and its supporting unit 2 on the first connecting station 5 can be moved to the input end of the conveyor unit 301 again, satisfying the transfer requirements of object 1 and its supporting unit 2; since 3+2.5≥5 seconds, the production mechanism of process five can complete processing within this time. The corresponding processing is completed within the second conveyor line 32. The intermittent dwell time of the downstream conveyor unit 301 is 4 seconds, and the corresponding single intermittent movement time is 1.5 seconds. The working time of process eight is 5 seconds, which meets the requirement of 4 + 1.5 ≥ 5. Therefore, after each movement of the downstream conveyor unit 301, the corresponding transition device moves the object 1 and its material support unit 2 at the output end of the downstream conveyor unit 301 to the second connecting station 6 to complete the unloading process. The material support unit 2, which originally completed the unloading process at the second connecting station 6, is moved to the input end of the upstream conveyor unit 301 split from the first conveyor line 31. Thus, the material support unit 2 completes the cyclic movement and, during the movement, moves the object 1 and completes the set process processing operation.

[0052] (Example 6)

[0053] As one embodiment of the present invention, refer to Figure 9 , Figure 10 Compared to the previous five embodiments, this embodiment adds a feature to prevent the material support unit 2 from shifting during intermittent movement and conveying in different directions. This is achieved by setting a positioning device 11 on the first conveyor line 31, the second conveyor line 32, and / or the corresponding conveyor unit 301. The positioning device 11 is preferably a positioning block 111, which allows two adjacent positioning blocks 111 to constrain a material support unit 2. Each material support unit 2 has at least one placement area 21 for placing the object 1 to be processed. The addition of the positioning device 11 allows the corresponding material support unit 2 to accurately stop at the set position after conveying, thereby improving the movement accuracy of all material support units 2 and meeting the requirements of a production line with high processing precision. For the execution unit 401 of the production mechanism, when the precision requirement for the execution unit 401 to cooperate with the corresponding object 1 is not high, the positioning device 11 may not be set.

[0054] Furthermore, considering that the number of material support units 2 placed at each connecting station exceeds one, a positioning block 111 is also set at the corresponding connecting station to limit the moving direction of the object 1 and its material support unit 2, so that it can be moved accurately and stably to the input end of the corresponding conveyor line or conveyor unit 301.

Claims

1. A production line comprising a conveying mechanism (3) for conveying a material support unit (2) carrying an object (1) and a production device (4) for processing the object (1), wherein the conveying mechanism (3) comprises a first conveying line (31) and a second conveying line (32), both the first conveying line (31) and the second conveying line (32) conveying the object (1) in a stepping manner and in opposite directions, characterized in that: It also includes a first connecting station (5) set between the output end of the first conveyor line (31) and the input end of the second conveyor line (32) and a second connecting station (6) set between the input end of the first conveyor line (31) and the output end of the second conveyor line (32). The material support unit (2) can move between the first conveyor line (31) and the second conveyor line (32) through the corresponding connecting station. The production device (4) includes at least one first production mechanism (41) for processing objects (1) on the first conveyor line (31), at least one second production mechanism (42) for processing objects (1) on the second conveyor line (32), and a third production mechanism (43) for processing objects (1) on the first connecting station (5). The processing time of the third production mechanism (43) is the longest among all production mechanisms. The number of objects (1) processed by the third production mechanism (43) at a time is N. The number of objects (1) processed by the other production mechanisms that do not have the longest processing time at a time is N. Compared to N, its ratio All are greater than or equal to 1, and It is an integer.

2. The production line according to claim 1, characterized in that: It also includes a first transition device (7) and a second transition device (8). The first transition device (7) is connected to the first conveyor line (31) and is used to move the material support unit (2) at the output end of the first conveyor line (31) to the input end of the second conveyor line (32) via the first connecting station (5). The second transition device (8) is connected to the second conveyor line (32) and is used to move the material support unit (2) at the output end of the second conveyor line (32) to the input end of the first conveyor line (31) via the second connecting station (6).

3. The production line according to claim 1, characterized in that: The production line also includes a third connecting station (9) and a third transition device (10). The first conveyor line (31) or / and the second conveyor line (32) includes at least two conveying units (301). A third connecting station (9) is provided between the output end and the input end of two adjacent conveying units (301). The processing time of the remaining production mechanisms is... Compared to the processing time T of the production unit that takes the longest time, The production mechanism of <2 processes the object (1) on the third connecting station (9). The third transition device (10) is connected to the upstream conveying unit (301) and is used to move the material support unit (2) at the output end of the upstream conveying unit (301) to the input end of the downstream conveying unit (301) via the third connecting station (9).

4. The production line according to any one of claims 1 to 3, characterized in that: The conveying mechanism (3) further includes a positioning device (11) for positioning the material support unit (2).

5. The production line according to claim 4, characterized in that: The positioning device (11) consists of positioning blocks (111) evenly distributed on the first conveyor line (31) and the second conveyor line (32), with two adjacent positioning blocks (111) positioning a material support unit (2).

6. The production line according to any one of claims 1 to 3, characterized in that: The third production mechanism (43) processes the object (1) on the second connecting station (6), and the processing time of the third production mechanism (43) is the longest among all production mechanisms.

7. The production line according to claim 6, characterized in that: The conveying mechanism (3) further includes a positioning device (11) for positioning the material support unit (2).

8. The production line according to any one of claims 1 to 3, characterized in that: The number of items (1) processed by the production organization on the same conveyor line is the same in a single processing.

9. The production line according to any one of claims 1 to 3, characterized in that: The single dwell time of the first conveyor line (31) and the second conveyor line (32) during stepping is 1 / N times the dwell time of the object (1) on the first connecting station (5).

10. The production line according to any one of claims 1 to 3, characterized in that: The single step distance of the first conveyor line (31) and the second conveyor line (32) during stepping is 1 / N times the overall length of the object (1) placed on the first connecting station (5).

11. The production line according to any one of claims 1 to 3, characterized in that: All of the production mechanisms and the conveying mechanism (3) are set up independently.

12. The production line according to claim 11, characterized in that: The production mechanisms are all detachably connected to the conveying mechanism (3).

13. The production line according to claim 1 or 2, characterized in that: The number of the first connecting station (5) and the second connecting station (6) are the same.

14. A method for allocating workstations on a production line, characterized in that: In a production line comprising any one of claims 1 to 13, workstations are allocated according to the following steps: S1. Determine the production organization involved in the production process of processing the object (1); S2. Determine the standard time and processing sequence for each production step; S3. Determine the starting station and the ending station, arrange the first production mechanism at the starting station and the last production mechanism at the ending station. The first production mechanism and the last production mechanism process the objects (1) on different conveyor lines, and the production mechanism with the longest processing time processes the objects (1) on the first connecting station (5) or the second connecting station (6). S4. Arrange the remaining production units according to the first plan. The first plan is that the number of execution units (401) of the production units that process the objects (1) on the same conveyor line is the same. The number of execution units (401) of the production unit that takes the longest time is N times the number of execution units (401) of the other production units, where N is a value greater than or equal to 1.

15. The production line workstation allocation method according to claim 14, characterized in that: The content in step S3 can be replaced by the following: Determine the starting and ending workstations, arrange the first production mechanism at the starting workstation, arrange the last production mechanism at the ending workstation, and both the first and last production mechanisms complete the processing of the object (1) on the same conveyor line, and the production mechanism with the longest processing time processes the object (1) at the first connecting workstation (5) or the second connecting workstation (6).

16. The production line station allocation method according to claim 14 or 15, characterized in that: Step S4 further includes allocating execution units (401) to the production mechanism based on the following conditions: the processing time T1 of the production mechanism that takes the longest time to process the object (1) on the first connecting station (5) or the second connecting station (6) is compared with the processing time T2 of the production mechanism that takes the longest time to process the object (1) on any conveyor line, calculated using standard time. The ratio of the two processing times T1 and T2 is divided by the shorter time value and then rounded down. The ratio is recorded as N. The number of execution units (401) in the production mechanism that processes the object (1) on the two conveyor lines is re-determined based on the value of N.

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