Automobile wire harness opening line production control method

Abstract

The present application relates to the technical field of automobile wire harness, in particular to a kind of automobile wire harness open line production control method.The method comprises obtaining the target production data of automobile wire harness;Based on the waterproof sleeve type in target production data is multiple, obtain the wire harness production proportion corresponding to each waterproof sleeve type;Based on the order of wire harness production proportion sequentially decreasing, control the automobile wire harness corresponding to the waterproof sleeve type of multiple kinds in the front of order in open line machine is arranged production;Based on all open line machine is in production state, with preset frequency, real-time acquisition is inputed each waterproof sleeve type corresponding to the automobile wire harness of production arrangement production completion proportion;Based on the maximum difference of the production completion proportion of multiple waterproof sleeve types inputed production arrangement exceeds preset proportion, control the part open line machine of the waterproof sleeve type corresponding to the largest production completion proportion changes production arrangement type to the waterproof sleeve type not inputed production arrangement.Such it has solved how to improve the problem of automobile wire harness production efficiency.

Description

Technical Field

[0001] This invention relates to the field of automotive wiring harness technology, and more specifically, to a method for controlling the production scheduling of automotive wiring harnesses. Background Technology

[0002] Automotive wiring harnesses are assemblies consisting of copper-plated contact terminals (connectors) crimped to wires and cables, then covered with molded insulation or an outer metal shell, and bundled together to form a circuit connection. In other words, automotive wiring harnesses can include wires, terminals, and waterproof sleeves. The production process of automotive wiring harnesses involves steps such as wire cutting, crimping, and stranding. Wire cutting refers to stripping the ends of the wires and crimping them with terminals; crimping refers to crimping the wires with terminals and then crimping them with waterproof sleeves.

[0003] However, in the production scheduling process of automotive wiring harnesses, the wiring harness manufacturing system needs to press-fit the corresponding type of terminals onto the corresponding type of wires to form a wiring harness according to the production list, and then press-fit the corresponding type of waterproof sleeve onto the corresponding type of wiring harness. In existing technologies, production of the next type often begins only after the mold for a matching type of wiring harness and waterproof sleeve has been completed, resulting in low production efficiency. Furthermore, when changing the required production model, the corresponding waterproof sleeve mold or wiring harness needs to be found and replaced, which is time-consuming. Summary of the Invention

[0004] To address the problem of improving automotive wiring harness production efficiency, this invention provides a method for controlling the production scheduling of automotive wiring harnesses, comprising:

[0005] Step S10: Obtain target production data for automotive wiring harnesses; the target production data includes waterproof sleeve type and wiring harness quantity; the automotive wiring harness includes wires, terminals, and waterproof sleeves; each end of the wire is sequentially crimped with the terminal and the waterproof sleeve;

[0006] Step S20: Based on the fact that there are multiple types of waterproof sleeves in the target production data, obtain the wire harness production ratio corresponding to each type of waterproof sleeve; the wire harness production ratio is the ratio of the number of wire harnesses corresponding to the waterproof sleeve type to the sum of the total number of wire harnesses in the target production data;

[0007] Step S30: Based on the decreasing order of the wire harness production ratio, control the production of the automotive wire harnesses corresponding to the various waterproof sleeve types that are ranked first to be scheduled on the wire cutting machine; there are multiple wire cutting machines; the number of wire cutting machines allocated to each waterproof sleeve type is positively correlated with the wire harness production ratio; the wire cutting machine includes a wire cutting machine body and a waterproof sleeve mold.

[0008] Step S40: Based on the fact that all the wire-opening machines are in production, the production completion rate of the automotive wiring harness corresponding to each type of waterproof sleeve that is put into production is obtained in real time at a preset frequency.

[0009] Step S50: Based on the fact that the maximum difference in the production completion rate of the various waterproof sleeve types put into production exceeds a preset rate, control the part of the opening machines corresponding to the waterproof sleeve type with the highest production completion rate to change the production scheduling type to the waterproof sleeve type that has not been put into production.

[0010] In some embodiments, the target production data further includes terminal type; the wire cutting machine further includes a terminal mold;

[0011] Step S30 includes:

[0012] Step S31: Based on the decreasing order of the wire harness production ratio, obtain the reference production time of the automotive wire harness corresponding to the top-ranked waterproof sleeve types; the reference production time is positively correlated with the number of terminal types; the reference production time includes the working time of the wire opening machine, the first downtime for changing the waterproof sleeve mold, and the second downtime for changing the terminal mold.

[0013] Step S32: Based on the reference production time arranged in descending order, control the production scheduling of the automotive wiring harnesses corresponding to the waterproof sleeve types that are ranked first on the wire cutting machine; there are multiple wire cutting machines; the number of wire cutting machines allocated to each type of waterproof sleeve in the production scheduling is positively correlated with the proportion of the wiring harness production; the number of wire cutting machines allocated to each type of waterproof sleeve in the production scheduling is positively correlated with the reference production time.

[0014] In some embodiments, step S40 includes:

[0015] Step S41: Based on the fact that all the wire-opening machines are in production, the production completion ratio of the automotive wiring harness corresponding to each type of waterproof sleeve that is put into production and the production output ratio of the wiring harness corresponding to each type of waterproof sleeve that is not put into production are obtained in real time at a preset frequency; the production completion ratio is the ratio of the number of automotive wiring harnesses corresponding to the waterproof sleeve type that have been put into production to the production target number.

[0016] Step S42: Adjust the preset ratio based on the sum of the production ratios of the wire harnesses corresponding to the various waterproof sleeve types that are not put into production; the preset ratio is negatively correlated with the sum of the production ratios of the various waterproof sleeve types that are not put into production.

[0017] In some embodiments, step S40 further includes:

[0018] Step S43: Adjust the preset frequency based on the maximum production completion ratio; the preset frequency is positively correlated with the maximum production completion ratio.

[0019] In some embodiments, the target production data in step S10 further includes terminal type;

[0020] Step S50 includes:

[0021] Step S51: Based on the fact that the maximum difference in the production completion ratio of the various waterproof sleeve types put into production exceeds a preset ratio, first terminal data and second terminal data are obtained; the first terminal data includes the terminal type of the automotive wiring harness to be put into production corresponding to the waterproof sleeve type with the largest production completion ratio; the second terminal data includes the terminal type of the automotive wiring harness corresponding to the waterproof sleeve type that has not been put into production.

[0022] Step S52: Based on the fact that the proportion of the remaining un-scheduled wire harness production is greater than 0, it is determined whether the un-scheduled waterproof sleeve type meets the scheduling conditions; the scheduling conditions are that any terminal type in the second terminal data is the same as any terminal type in the first terminal data.

[0023] Step S53: Based on the fact that the waterproof sleeve type that has not been put into production meets the production scheduling conditions, control the part of the opening machines corresponding to the waterproof sleeve type with the largest production completion rate to change the production scheduling type to the waterproof sleeve type that has not been put into production.

[0024] In some embodiments, step S50 further includes:

[0025] Step S54: Based on the fact that the remaining un-scheduled wire harness production ratio is 0, control the wire opening machine corresponding to the waterproof sleeve type with the largest production completion ratio to change the production scheduling type to the waterproof sleeve type with the smallest production completion ratio.

[0026] In some embodiments, the correlation between the number of wire-opening machines allocated in step S32 and the reference production time is greater than the correlation between the number of wire-opening machines allocated and the proportion of wire harness production.

[0027] In some embodiments, the target production data in step S10 further includes the wire harness diameter; the wire harness diameter is the diameter of the wire.

[0028] The reference production time in step S31 is negatively correlated with the average wire harness diameter of the automotive wiring harness corresponding to the waterproof sleeve type.

[0029] In some embodiments, the preset ratio is greater than 30%.

[0030] In some embodiments, the wire opening machine further includes a guide tube; after the wire is unwound, it passes through the guide tube and enters the main body of the wire opening machine for cutting and crimping; the diameter of the guide tube corresponds one-to-one with the diameter of the wire harness; the reference production time also includes a third downtime for replacing the guide tube.

[0031] To address the problem of how to improve the production efficiency of automotive wiring harnesses, this invention has the following advantages:

[0032] Based on the production volume proportion of each type of waterproof sleeve in the target production data for automotive wiring harnesses, wire cutting machines are allocated. Furthermore, during the wire cutting machine production process, the production schedule of the wire cutting machines is dynamically adjusted according to the completion rate of the waterproof sleeve types assigned to them. This ensures that the completion time of automotive wiring harness production for all waterproof sleeve types is similar, resulting in some wire cutting machines maintaining the same waterproof sleeve type from the start to the end of their production tasks. This ensures that all wire cutting machines operate at full capacity, reducing the number of times waterproof sleeve molds need to be changed, thereby reducing production time and improving production efficiency. Attached Figure Description

[0033] Figure 1 A flowchart illustrating an embodiment of an automotive wiring harness production scheduling control method is shown. Detailed Implementation

[0034] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0035] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0036] In the production process of automotive wiring harnesses, different types of waterproof sleeves need to be pressed onto corresponding terminal models using a wire-cutting machine according to the production list. Since both waterproof sleeve and terminal models come in multiple types, existing technologies often only begin production of the next type after processing one matching model of waterproof sleeve and terminal, resulting in low production efficiency. Furthermore, after changing the required production model on the wire-cutting machine, the corresponding waterproof sleeve mold or terminal mold needs to be found and replaced, which is time-consuming, especially for waterproof sleeve molds. To reduce the number of mold replacements when the wire-cutting machine is operating at full capacity, this embodiment discloses a wire-cutting production scheduling control method for automotive wiring harnesses.

[0037] In this embodiment, as Figure 1 As shown, the automotive wiring harness production control method may include steps S10-S50. The following provides a detailed description of these steps:

[0038] Step S10: Obtain the target production data for the automotive wiring harness. The target production data includes the type of waterproof sleeve and the quantity of wiring harnesses. The automotive wiring harness includes wires, terminals, and waterproof sleeves. Each end of the wire is sequentially crimped with a terminal and a waterproof sleeve.

[0039] Step S20: Based on the fact that there are multiple types of waterproof sleeves in the target production data, obtain the production ratio of wire harnesses corresponding to each type of waterproof sleeve. The production ratio of wire harnesses is the ratio of the number of wire harnesses corresponding to the waterproof sleeve type to the sum of the total number of wire harnesses in the target production data. The production scheduling priority of each type of waterproof sleeve is determined by the production ratio of wire harnesses.

[0040] Step S30: Based on the decreasing order of wire harness production volume, the production schedule for automotive wire harnesses corresponding to the most popular waterproof sleeve types is controlled on the wire cutting machine. Multiple wire cutting machines are available. The number of wire cutting machines allocated to each waterproof sleeve type is positively correlated with the wire harness production volume percentage. Each wire cutting machine may include a machine body and a waterproof sleeve mold; one type of waterproof sleeve mold corresponds to each type. Priority is given to automotive wire harnesses corresponding to waterproof sleeve types with a higher production volume percentage to ensure timely and sufficient production of automotive wire harnesses. For example, if the wire harness production volume of waterproof sleeve type A is 70%, then the allocation ratio of wire cutting machines for waterproof sleeve type A is also 70%.

[0041] Step S40: Assuming all wire-cutting machines are in production, the production completion rate of the automotive wiring harness corresponding to each type of waterproof sleeve in the production schedule is acquired in real time at a preset frequency. The production completion rate is also known as the production progress of the automotive wiring harness. By monitoring the production progress of the automotive wiring harness corresponding to each type of waterproof sleeve in the production schedule, it is possible to dynamically adjust the wire-cutting machines to change production types, thereby improving production efficiency. The preset frequency can be set according to production needs.

[0042] Step S50: Based on the fact that the maximum difference in the production completion rate of various waterproof sleeve types exceeds a preset ratio, the scheduling type of some wire-cutting machines corresponding to the waterproof sleeve type with the highest production completion rate is changed to the waterproof sleeve type not in production. Since changing the waterproof sleeve mold on the wire-cutting machine is time-consuming, to improve production efficiency, during the wire-cutting machine scheduling process, a preset ratio is used to determine whether the wire-cutting machines for various waterproof sleeve types need to be reassigned. This ensures that when the maximum difference in the production completion rate of various waterproof sleeve types exceeds the preset ratio, meaning that the automotive wiring harness production progress for at least one waterproof sleeve type is relatively fast, to ensure that the automotive wiring harnesses corresponding to multiple waterproof sleeve types can simultaneously complete their production targets, a portion of the wire-cutting machines corresponding to the waterproof sleeve type with the highest production completion rate can be reduced to slow down their output, and the reduced portion of the wire-cutting machines can be changed to the waterproof sleeve type not in production. Since the production volume of waterproof sleeve type wire harnesses that are not put into production has a low proportion and the production scheduling time is short, this operation can avoid overcapacity caused by unreasonable allocation of wire cutting machines. At the same time, it can reduce the number of times all wire cutting machines need to change waterproof sleeve molds, ensuring that the production target of this batch of automotive wire harnesses can be completed simultaneously, thereby improving production efficiency.

[0043] In this embodiment, the target production data in step S10 may also include terminal types. The wire opening machine also includes terminal molds. There are various terminal types, and each terminal type corresponds to a terminal mold. When the wire opening machine changes the production scheduling type, the time consumed by changing the waterproof sleeve mold is longer than the time consumed by changing the terminal mold.

[0044] Step S30 may include:

[0045] Step S31: Based on the decreasing order of wire harness production volume, obtain the reference production time for the automotive wire harnesses corresponding to the top-ranked waterproof sleeve types. The reference production time is positively correlated with the number of terminal types. The reference production time includes the working time of the wire opening machine, the first downtime for changing the waterproof sleeve mold, and the second downtime for changing the terminal mold.

[0046] Step S32: Based on the reference production time, the automotive wiring harnesses corresponding to the top-ranked waterproof sleeve types are arranged in descending order, and production is scheduled on the wire cutting machine. There are multiple wire cutting machines. The number of wire cutting machines allocated to each waterproof sleeve type is positively correlated with the proportion of wiring harness production. The number of wire cutting machines allocated to each waterproof sleeve type is also positively correlated with the reference production time. By considering the proportion of wiring harness production and the reference production time, the production weight of each type of automotive wiring harness can be determined, thus improving the rationality of the wire cutting machine's allocation of production types and prioritizing the production of automotive wiring harnesses with the largest proportion of production and the longest reference production time. During the wire cutting machine's production scheduling process, all automotive wiring harness production tasks for a single waterproof sleeve type may correspond to multiple types of terminals. Using the above method, after each wire cutting machine determines the corresponding waterproof sleeve type, it only needs to change the terminal mold to produce different models of automotive wiring harnesses, thereby reducing the number of waterproof sleeve mold changes and improving production efficiency. Furthermore, since calculating the wire harness production ratio is simpler and faster than calculating the reference production time, this invention can first quickly filter out the automotive wire harnesses corresponding to the waterproof sleeve types with large production volumes based on the wire harness production ratio, and then accurately sort the specific reference production times from the initially screened waterproof sleeve types. This two-stage screening saves computational resources, improves response speed, and ensures that the automotive wire harnesses corresponding to the waterproof sleeve types put into production are those with heavy production loads. This also ensures that some wire cutting machines do not need to change the waterproof sleeve type from the start to the end of their production tasks, reducing the overall number of waterproof sleeve replacements and thus improving overall production efficiency.

[0047] In this embodiment, step S40 includes:

[0048] Step S41: Based on all wire-opening machines being in production, the production completion rate of automotive wiring harnesses corresponding to each type of waterproof sleeve that is put into production and the production output ratio of wiring harnesses corresponding to each type of waterproof sleeve that is not put into production are obtained in real time at a preset frequency. The production completion rate is the ratio of the number of automotive wiring harnesses corresponding to the waterproof sleeve type that have been produced to the production target number.

[0049] Step S42: Adjust the preset ratio based on the sum of the production proportions of wire harnesses corresponding to various waterproof sleeve types that are not yet in production scheduling. The preset ratio is negatively correlated with the sum of the production proportions of wire harnesses corresponding to various waterproof sleeve types that are not yet in production scheduling. The smaller the production proportion of wire harnesses corresponding to the waterproof sleeve types that are not yet in production scheduling, the lower their production weight. However, if the preset ratio is too small, it may cause the wire cutting machine to frequently change the production scheduling type. To avoid extending the production time of automotive wire harnesses, adjusting the preset ratio using the above method can delay the wire cutting machine from changing the production scheduling type to the waterproof sleeve types that are not yet in production scheduling, thereby improving production efficiency.

[0050] In this embodiment, step S40 may further include:

[0051] Step S43: Adjust the preset frequency based on the maximum production completion rate. The preset frequency is positively correlated with the maximum production completion rate. Adjusting the preset frequency based on the maximum production completion rate means that the faster the production schedule for the automotive wiring harness corresponding to the waterproof sleeve type with the fastest production progress, the higher the preset frequency. This reduces the data lag in real-time acquisition of the production completion rate for each waterproof sleeve type, ensures the accuracy of the scheduling changeover for the wiring harness opening machine, reduces the number of waterproof sleeve mold changes, and improves production efficiency.

[0052] In this embodiment, the target production data in step S10 may also include terminal types. There are various terminal types. When the production scheduling type is changed on the wire cutting machine, the time consumed by changing the waterproof sleeve mold is longer than the time consumed by changing the terminal mold.

[0053] Step S50 includes:

[0054] Step S51: Based on the fact that the maximum difference in the production completion rate of various waterproof sleeve types put into production exceeds a preset rate, first terminal data and second terminal data are obtained. The first terminal data includes the terminal type of the automotive wiring harness to be produced corresponding to the waterproof sleeve type with the highest production completion rate. The second terminal data includes the terminal type of the automotive wiring harness corresponding to the waterproof sleeve types not put into production.

[0055] Step S52: Based on the fact that the remaining un-scheduled wire harness production ratio is greater than 0 (i.e., there are un-scheduled waterproof sleeve types), determine whether the un-scheduled waterproof sleeve types meet the scheduling conditions. The scheduling condition is that any terminal type in the second terminal data is the same as any terminal type in the first terminal data.

[0056] Step S53: Based on the fact that the waterproof sleeve type that has not been put into production meets the production scheduling conditions, control the partial production line opening machine corresponding to the waterproof sleeve type with the largest production completion rate to change the production scheduling type to the waterproof sleeve type that has not been put into production.

[0057] By using the above method, when the wire cutting machine changes to the automotive wiring harness corresponding to a waterproof sleeve type that has not been put into production, it prioritizes selecting a waterproof sleeve type that has the same terminal type as the automotive wiring harness corresponding to the waterproof sleeve type with the largest production completion rate among the various waterproof sleeve types that have not been put into production. This reduces the number of times the wire cutting machine needs to change the terminal mold and improves production efficiency.

[0058] In this embodiment, step S50 may further include:

[0059] Step S54: Based on the fact that the remaining unscheduled wire harness production ratio is 0 (i.e., all waterproof sleeve types are scheduled for production on the wire cutting machine), the scheduling type of some wire cutting machines corresponding to the waterproof sleeve type with the highest production completion rate is changed to the waterproof sleeve type with the lowest production completion rate. This method slows down the production progress of the automotive wire harness corresponding to the waterproof sleeve type with the highest production completion rate, dynamically adjusts the waterproof sleeve types corresponding to all wire cutting machines in the scheduling process, allowing automotive wire harnesses corresponding to multiple waterproof sleeve types to be produced simultaneously, and reduces the number of times all wire cutting machines need to change waterproof sleeve molds, thereby improving production efficiency.

[0060] In other embodiments, step S54 may include:

[0061] Step S541: Based on the fact that the remaining un-scheduled wire harness production ratio is 0, obtain the third terminal data and the fourth terminal data; the third terminal data includes the terminal type of the automotive wire harness currently in production corresponding to the waterproof sleeve type with the largest production completion ratio; the fourth terminal data includes the terminal type of the automotive wire harness currently in production corresponding to the waterproof sleeve type with the smallest production completion ratio.

[0062] Step S542: Based on the third terminal data and the fourth terminal data, determine whether there are any opening machines that meet the allocation conditions for all the opening machines corresponding to the waterproof sleeve type with the largest production completion rate; the allocation condition is that any terminal type in the third terminal data is the same as any terminal type in the fourth terminal data.

[0063] Step S543: Based on the fact that all the wire-cutting machines corresponding to the waterproof sleeve type with the highest production completion rate have wire-cutting machines that meet the allocation conditions, control the wire-cutting machines that meet the allocation conditions to change their production scheduling type to the waterproof sleeve type with the lowest production completion rate. Through this method, when there are no waterproof sleeve types not yet in production scheduling, when the wire-cutting machine corresponding to the waterproof sleeve type with the highest production completion rate in production scheduling changes its production scheduling type, it can choose to change to the wire-cutting machine with the same terminal type corresponding to the lowest production completion rate. This allows for dynamic adjustment of the number of wire-cutting machines to balance the production progress of automotive wiring harnesses corresponding to various waterproof sleeve types. Furthermore, when changing the production scheduling type of a wire-cutting machine, only the waterproof sleeve mold needs to be changed, reducing the time spent on mold changes and improving production efficiency.

[0064] In this embodiment, the correlation between the number of wire-opening machines allocated in step S32 and the reference production time is greater than the correlation between the number of wire-opening machines allocated and the proportion of wire harness production. That is, the reference production time has a greater impact on the weight of the number of wire-opening machines allocated. This setting can make the allocation of production types for wire-opening machines more accurate, avoid overcapacity of wire-opening machines, and improve production efficiency.

[0065] In this embodiment, the target production data in step S10 also includes the wire harness diameter, which is the diameter of the wire. The reference production time in step S31 is negatively correlated with the average wire harness diameter of the automotive wire harness corresponding to the waterproof sleeve type. Automotive wire harnesses have various wire diameter types. Before the wire opening machine starts production, the wire needs to be wound onto the wire harness spool so that the wire can be output during production. The larger the wire diameter, the shorter the length that can be wound on the wire harness spool. During the wire opening machine production process, the average wire harness diameter can be obtained to obtain the reference frequency for replacing the wire harness spool, thereby reducing the actual frequency of wire harness spool replacement, controlling the reference production time, and improving production efficiency.

[0066] In this embodiment, the preset ratio is at least greater than 30%. This avoids frequent changes in production scheduling caused by an excessively small preset ratio, reduces the number of mold changes, thereby reducing downtime for mold replacement and improving production efficiency.

[0067] In this embodiment, the wire splitting machine also includes a guide tube; after the wire is unwound, it passes through the guide tube and enters the main body of the wire splitting machine for cutting and crimping; the diameter of the guide tube corresponds one-to-one with the diameter of the wire harness; the reference production time also includes a third downtime for replacing the guide tube. When different types of wires are output to the wire splitting machine for crimping terminals, they need to be guided by the corresponding type of guide tube. On the wire splitting machine, the replacement time of the waterproof sleeve mold, the replacement time of the terminal mold, the replacement time of the guide tube, and the replacement time of the wire decrease in the following order, that is, the first downtime is longer than the second downtime, and the second downtime is longer than the third downtime.

[0068] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. A method of controlling production of an automobile wire harness opening line, characterized by, The automotive wiring harness production scheduling control method includes: Step S10: Obtain target production data for automotive wiring harnesses; the target production data includes waterproof sleeve type and wiring harness quantity; the automotive wiring harness includes wires, terminals, and waterproof sleeves; each end of the wire is sequentially crimped with the terminal and the waterproof sleeve; Step S20: Based on the fact that there are multiple types of waterproof sleeves in the target production data, obtain the wire harness production ratio corresponding to each type of waterproof sleeve; the wire harness production ratio is the ratio of the number of wire harnesses corresponding to the waterproof sleeve type to the sum of the total number of wire harnesses in the target production data; Step S30: Based on the decreasing order of the wire harness production ratio, control the production of the automotive wire harnesses corresponding to the various waterproof sleeve types that are ranked first to be scheduled on the wire cutting machine; there are multiple wire cutting machines; the number of wire cutting machines allocated to each waterproof sleeve type is positively correlated with the wire harness production ratio; the wire cutting machine includes a wire cutting machine body and a waterproof sleeve mold. Step S40: Based on the fact that all the wire-opening machines are in production, the production completion rate of the automotive wiring harness corresponding to each type of waterproof sleeve that is put into production is obtained in real time at a preset frequency. Step S50: Based on the fact that the maximum difference in the production completion rate of the various waterproof sleeve types put into production exceeds a preset rate, control the part of the opening machines corresponding to the waterproof sleeve type with the highest production completion rate to change the production scheduling type to the waterproof sleeve type that has not been put into production.

2. The automotive wiring harness production control method according to claim 1, characterized in that, The target production data also includes terminal type; the wire cutting machine also includes terminal mold; Step S30 includes: Step S31: Based on the decreasing order of the wire harness production ratio, obtain the reference production time of the automotive wire harness corresponding to the top-ranked waterproof sleeve types; the reference production time is positively correlated with the number of terminal types; the reference production time includes the working time of the wire opening machine, the first downtime for changing the waterproof sleeve mold, and the second downtime for changing the terminal mold. Step S32: Based on the reference production time arranged in descending order, control the production scheduling of the automotive wiring harnesses corresponding to the waterproof sleeve types that are ranked first on the wire cutting machine; there are multiple wire cutting machines; the number of wire cutting machines allocated to each type of waterproof sleeve in the production scheduling is positively correlated with the proportion of the wiring harness production; the number of wire cutting machines allocated to each type of waterproof sleeve in the production scheduling is positively correlated with the reference production time.

3. The automotive wiring harness production control method according to claim 1, characterized in that, Step S40 includes: Step S41: Based on the fact that all the wire-opening machines are in production, the production completion ratio of the automotive wiring harness corresponding to each type of waterproof sleeve that is put into production and the production output ratio of the wiring harness corresponding to each type of waterproof sleeve that is not put into production are obtained in real time at a preset frequency; the production completion ratio is the ratio of the number of automotive wiring harnesses corresponding to the waterproof sleeve type that have been put into production to the production target number. Step S42: Adjust the preset ratio based on the sum of the production ratios of the wire harnesses corresponding to the various waterproof sleeve types that are not put into production; the preset ratio is negatively correlated with the sum of the production ratios of the various waterproof sleeve types that are not put into production.

4. The automotive wiring harness production control method according to claim 3, characterized in that, Step S40 further includes: Step S43: Adjust the preset frequency based on the maximum production completion ratio; the preset frequency is positively correlated with the maximum production completion ratio.

5. The automotive wiring harness production control method according to claim 1, characterized in that, The target production data in step S10 also includes terminal type; Step S50 includes: Step S51: Based on the fact that the maximum difference in the production completion ratio of the various waterproof sleeve types put into production exceeds a preset ratio, first terminal data and second terminal data are obtained; the first terminal data includes the terminal type of the automotive wiring harness to be put into production corresponding to the waterproof sleeve type with the largest production completion ratio; the second terminal data includes the terminal type of the automotive wiring harness corresponding to the waterproof sleeve type that has not been put into production. Step S52: Based on the fact that the proportion of the remaining un-scheduled wire harness production is greater than 0, it is determined whether the un-scheduled waterproof sleeve type meets the scheduling conditions; the scheduling conditions are that any terminal type in the second terminal data is the same as any terminal type in the first terminal data. Step S53: Based on the fact that the waterproof sleeve type that has not been put into production meets the production scheduling conditions, control the part of the opening machines corresponding to the waterproof sleeve type with the largest production completion rate to change the production scheduling type to the waterproof sleeve type that has not been put into production.

6. The automotive wiring harness production control method according to claim 5, characterized in that, Step S50 further includes: Step S54: Based on the fact that the remaining un-scheduled wire harness production ratio is 0, control the wire opening machine corresponding to the waterproof sleeve type with the largest production completion ratio to change the production scheduling type to the waterproof sleeve type with the smallest production completion ratio.

7. The automotive wiring harness production control method according to claim 2, characterized in that, The correlation between the number of wire-opening machines allocated in step S32 and the reference production time is greater than the correlation between the number of wire-opening machines allocated and the proportion of wire harness production.

8. The automotive wiring harness production control method according to claim 2, characterized in that, The target production data in step S10 also includes the wire harness diameter; the wire harness diameter is the diameter of the wire. The reference production time in step S31 is negatively correlated with the average wire harness diameter of the automotive wiring harness corresponding to the waterproof sleeve type.

9. The automotive wiring harness production control method according to claim 3, characterized in that, The preset ratio is greater than 30%.

10. The automotive wiring harness production control method according to claim 8, characterized in that, The wire opening machine also includes a guide tube; after the wire is unwound, it passes through the guide tube and enters the main body of the wire opening machine for cutting and crimping; the diameter of the guide tube corresponds one-to-one with the diameter of the wire harness; the reference production time also includes a third downtime for replacing the guide tube.

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