CN115204637B

CN115204637B - SMT production and distribution method and equipment based on WMS system

Info

Publication number: CN115204637B
Application number: CN202210734842.4A
Authority: CN
Inventors: 孙瑛; 马嘉林; 苏世伟; 崔方剑
Original assignee: Qingdao Hisense Information Technology Co ltd
Current assignee: Qingdao Hisense Information Technology Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2023-07-14
Anticipated expiration: 2042-06-27
Also published as: CN115204637A

Abstract

The invention discloses a SMT production and distribution method and equipment based on a WMS system, which are used for generating a plurality of rows of material receiving details based on a material stack table generated by a chip mounter; determining inventory allocation rules based on warehouse types, and determining order picking tasks based on the inventory allocation rules and the material details; based on the goods picking task scanning material disc bar code to place the material disc on the stack position that the skip corresponds, thereby with the electronic components supersend, the strategies such as divide while choosing, off-line material preparation are organically combined together, a production delivery mode based on WMS has been proposed, the whole process management of production delivery has been realized, current SMT production line time of changing types has been shortened greatly, and the application scope is wider, simultaneously a skip from taking the light mechanism has been proposed, through WMS system and hardware interaction, with goods picking task execution and sorting process combination and provide mistake proofing material mechanism, the operating efficiency and the quality of warehouse have been improved.

Description

SMT production and distribution method and equipment based on WMS system

Technical Field

The application relates to the technical field of warehouse logistics, in particular to a SMT production and distribution method and equipment based on a WMS system.

Background

SMT refers to a circuit attachment technique in which surface-mount electronic components without pins or short leads are mounted on the surface of a Printed Circuit Board (PCB) or other substrate, and soldered and assembled by reflow soldering or dip soldering. During normal production, two sides of the circuit board need to be processed, and as the packaging modes of the electronic element components are all whole discs (the electronic element components are convenient for an automatic chip mounter to use, the chip mounter is shown in a structure shown in figure 1), the production requirement is 1000, the disc is 1000, but the T surface needs to be printed with 500, and the B surface needs to be printed with 500. When the T surface is changed into the B surface, the problem of production line transformation can be related: the same components and parts are different in stacking positions on different surfaces, even stations of a production line, and tailings are required to be fed again according to the stacking positions on the surface B, so that the common type changing time is about 30 minutes.

Existing SMT production distribution modes are generally divided into two types: firstly, when a chip mounter chip mounting program is compiled, the same production order is limited, the T/B surfaces of the same materials are on the same stack position, and the T/B surfaces of the materials are used by a skip (the T/B surfaces of the materials placed by the skip) are shared by the T/B surfaces, but the chip mounter chip mounting efficiency is often lost in the mode, in addition, as the chip mounting station and the skip capacity of an SMT production line are limited, for the production order with more electronic components, the same components still exist, and the stack positions of the T/B surfaces are different; secondly, the warehouse sorts goods according to the material stack table, the demand of the split T/B surface, at the moment, the materials are mixed together, and then the material trays are sorted to corresponding stack positions of the skip car.

When a chip mounter chip mounting program is compiled, the same production order is limited, the T/B surfaces of the same materials are on the same stack position, the T/B surfaces share a skip car, so that the chip mounting efficiency of the chip mounter is often lost, the production line type changing time is shortened, the actual production time is prolonged, the efficiency is not improved greatly, in addition, as the chip mounting station and skip car capacity of the SMT production line are limited, the same components still exist for the production order with more electronic components, and the stack positions of the T/B surfaces are different, so that the application range is narrow;

the warehouse is based on a material stack table, the T/B surface is split for picking, a sorting link is added in a manner of sorting trays to a stack position on line, an error-proofing mechanism is not needed, the warehouse operation efficiency is low, and error proofing is realized by manual identification.

Therefore, how to improve the efficiency of SMT production and distribution process and reduce the material error rate is a technical problem to be solved at present.

Disclosure of Invention

The invention provides a SMT production and distribution method based on a WMS system, which is used for solving the technical problems that in the prior art, a sorting link is added in a manner of sorting trays to a stack position by an online side, an error-proofing mechanism is not provided, the warehouse operation efficiency is low, and error proofing is realized by manual identification, and the method comprises the following steps:

generating a plurality of rows of material receiving details based on a material stack table generated by a chip mounter, wherein the material stack table comprises stack positions, electronic component codes, electronic component descriptions, single-machine consumption of the electronic components, specific mounting and attaching points of a PCB (printed circuit board) and material layout, and the material layout comprises a T surface and a B surface;

determining inventory allocation rules based on warehouse types, and determining order picking tasks based on the inventory allocation rules and the material details;

and scanning the tray bar codes based on the picking task, and placing the trays on corresponding stacking positions of the skip car.

In some embodiments of the present application, inventory allocation rules are determined based on warehouse types, and pick tasks are determined based on the inventory allocation rules and the material details, specifically:

when the warehouse type is a warehouse using only an electronic shelf and available inventory exists, orderly occupying the warehouse according to the material trays of the whole tray, and judging whether the required quantity in the material receiving detail is greater than the number of the occupied material trays;

if yes, continuing to occupy the material trays, and deducting the number of occupied material trays from the required number;

if not, occupying the tray and ending the picking task flow;

and when the warehouse type is a warehouse which only uses the electronic shelf and no available inventory exists, directly ending the picking task flow.

when the warehouse type is that the electronic shelf and the plane shelf are used at the same time, if the available inventory exists in the warehouse position of the electronic shelf, the warehouse is occupied according to the material trays of the whole tray until the required quantity in the material receiving detail is smaller than the quantity of the occupied material trays;

and if the available inventory does not exist in the inventory positions of the electronic shelf, judging whether the available inventory exists in the plane shelf.

In some embodiments of the present application, determining whether the flat shelf has available inventory is specifically:

if the plane goods shelf has available stock, determining the actual material-receiving requirement based on the material-receiving detail, and occupying according to a material tray of the whole box;

if the actual material receiving requirement is greater than the number of the boxes of the material trays, occupying the whole box of the material trays, and deducting the number of the occupied material trays from the required number;

if the actual material receiving requirement is smaller than the number of the boxes of the material trays, the number of the material trays corresponding to the actual material receiving requirement is occupied.

In some embodiments of the present application, the actual material receiving requirement is determined based on the material receiving details, specifically:

actual stock requirement= (stock requirement in stock detail/MPQ) MPQ;

wherein, (the material receiving requirement/MPQ in the material receiving detail) is taken up as an integer, and MPQ is the minimum packaging quantity.

In some embodiments of the present application, the skip specifically includes:

the T surface layer comprises a pressure sensing device, is used for placing a head sleeve material of the T surface and is provided with an indicator lamp;

the surface layer B comprises the pressure sensing device, is used for placing the head sleeve material of the surface B and is provided with an indicator lamp;

the residual material layer is used for placing residual materials on the T surface or the B surface, and no indicator lamp is arranged;

the pressure sensing device is used for detecting the placing position of the material tray, sending information of a car number and a stack position to the WMS according to the placing position of the material tray, and controlling the indicator lamp to be turned off.

In some embodiments of the present application, the tray bar code is scanned based on the picking task, and the tray is placed on a stack position corresponding to the skip, specifically:

when a material vehicle number and a material disc bar code are scanned through scanning equipment, if the material disc is a head set material, a light-on interface is called through a WMS system based on the material vehicle number and stack position information, an indicator light corresponding to a stack position of the material vehicle is controlled to be automatically turned on, after the pressure sensing device detects that the material disc is placed at the corresponding position of the material vehicle, the indicator light is automatically turned off, material vehicle number and stack position information are returned to the WMS system, and after the returned material vehicle number and stack position information are received by the WMS system, a picking task is automatically ended;

when the number of the skip car and the bar code of the tray are scanned by the scanning equipment, if the tray is the excess material, the indicator lamp cannot be lightened, and after the tray is placed at the corresponding position of the skip car, the picking task is manually finished by the WMS system.

In some embodiments of the present application, a plurality of rows of material receiving details are generated based on a material stack table generated by a chip mounter, specifically:

and generating a plurality of rows of material receiving details according to the number of material layouts, stack positions and single machine consumption in the material stack table.

Correspondingly, the invention also provides SMT production and distribution equipment based on the WMS system, which comprises the following components:

the generating module is used for generating a plurality of rows of material receiving details based on a material stack table generated by the chip mounter, wherein the material stack table comprises stack positions, electronic component codes, electronic component descriptions, single-machine consumption of the electronic components, specific mounting points of a PCB (printed circuit board) and material layout, and the material layout comprises a T surface and a B surface;

the confirmation module is used for determining inventory allocation rules based on warehouse types and determining picking tasks based on the inventory allocation rules and the material details;

and the scanning module is used for scanning the tray bar codes based on the picking task and placing the trays on corresponding stacking positions of the skip car.

By applying the technical scheme, a plurality of rows of material receiving details are generated based on a material stack table generated by a chip mounter, wherein the material stack table comprises stack positions, electronic component codes, electronic component descriptions, single-machine consumption of electronic components, specific mounting points of a PCB (printed circuit board) and material layout, and the material layout comprises a T surface and a B surface; determining inventory allocation rules based on warehouse types, and determining order picking tasks based on the inventory allocation rules and the material details; based on the goods picking task scanning material disc bar code to place the material disc on the stack position that the skip corresponds, thereby with the electronic components supersend, the strategies such as divide while choosing, off-line material preparation are organically combined together, a production delivery mode based on WMS has been proposed, the whole process management of production delivery has been realized, current SMT production line time of changing types has been shortened greatly, and the application scope is wider, simultaneously a skip from taking the light mechanism has been proposed, through WMS system and hardware interaction, with goods picking task execution and sorting process combination and provide mistake proofing material mechanism, the operating efficiency and the quality of warehouse have been improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a flow diagram of an SMT production and distribution method based on a WMS system according to an embodiment of the present invention;

fig. 2 shows a schematic structural diagram of a stack table according to an embodiment of the present invention;

FIG. 3 is a schematic diagram showing a material-receiving structure according to an embodiment of the present invention;

FIG. 4 is a diagram showing a comparison of the front and rear of a requirement for splitting a collar material detail according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a warehouse inventory allocation process using only electronic racks according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a warehouse inventory allocation process using both electronic racks and flat racks according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a skip car according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of an SMT production distribution apparatus based on a WMS system according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The embodiment of the application provides an SMT production distribution method based on a WMS system, which organically combines strategies such as electronic component overdriving, sorting and separating, offline material preparation and the like, provides a production distribution mode based on the WMS, realizes overall process management of production distribution, greatly shortens the existing SMT production line type changing time, has wider application range, and simultaneously provides a skip car with a lighting mechanism, and performs picking tasks and sorting processes and provides an error-proofing mechanism through interaction of the WMS system and hardware, so that the operation efficiency and quality of a warehouse are improved.

As shown in fig. 1, the method comprises the steps of:

step S101, generating a plurality of rows of material receiving details based on a material stack table generated by a chip mounter, wherein the material stack table comprises stack positions, electronic component codes, electronic component descriptions, single-machine consumption of the electronic components, specific mounting points of a PCB (printed circuit board) and material layout, and the material layout comprises a T surface and a B surface.

In this embodiment, the stack table is detailed stack information given by the chip mounter after the chip mounter has completed the chip mounter program, and its structure is shown in fig. 2, and is divided into LOC (stack position), part No. (electronic component code), description (electronic component Description), qty (electronic component single unit usage), remark (specific mounting point of PCB), and material layout (TOP/BOT).

Meanwhile, in order to meet the offline material preparation of the T surface and the B surface, the material receiving details of a plurality of rows of WMSs are generated according to the material layout, the stack position and the single machine consumption of the material stack table (the production quantity of finished products), so that the electronic air element needs to be split according to the TOP/BOT surface and the stack position, and when the production quantity is 100, the material receiving details of the WMSs are shown in the figure 3.

It will be appreciated that the above-mentioned stack table structure and the material-receiving detail structure are only a preferred embodiment provided in the present application, and are not limited to the structure thereof, and those skilled in the art can reasonably modify the stack table structure and the material-receiving detail structure according to actual production requirements, which all fall within the scope of protection of the present scheme

Step S102, determining inventory allocation rules based on warehouse types, and determining order picking tasks based on the inventory allocation rules and the material details.

In this embodiment, the picking task is generated by WMS according to a certain inventory allocation rule and by row inventory allocation occupation based on the stock-taking details, and is used for executing the subsequent picking task. Meanwhile, the picking task can be related with a stock receiving detail so as to be used for acquiring a layout and a stack position when the subsequent picking task is performed, and assuming that two Mat1 and Mat3 discs are respectively arranged in the current stock, three Mat2 discs are arranged, the number of each disc is 1000, the stock distribution results before and after the splitting requirement and the picking task pair are as shown in fig. 4, the Mat1 and the Mat2 can be seen to need multiple picking discs to meet the requirement of materials on a TB surface and simultaneously take off-line for preparation, so that the time for changing a production line from the T surface to the B surface is reduced.

The stock allocation rules are also varied depending on the shelf and storage mode used in the warehouse. Typically, an SMT warehouse is configured with industry standard electronic shelves, single-disc single-bin storage. But the storage capacity of the electronic shelf is limited, one shelf can only store 2000-4000 discs, and the operations of loading and unloading the shelf are complicated. For some enterprises with larger scale, the number of the electronic trays often reaches the order of more than 10W, and a mode of parallel storage of flat shelves by boxes and storage of the electronic shelves by discs is generally adopted, so that the upper limit of the warehouse capacity and the overall operation efficiency are improved.

Alternatively, the warehouse type may specifically include a warehouse using only electronic racks or a warehouse using both electronic racks and flat racks.

To ensure accuracy of warehouse inventory allocation using only electronic racks, in some embodiments of the present application, inventory allocation rules are determined based on warehouse type and pick tasks are determined based on the inventory allocation rules and the material detail, specifically:

if not, occupying the tray and ending the picking task flow;

As shown in fig. 5, a warehouse inventory allocation flow using only electronic shelves according to the embodiment of the present application is shown, when the warehouse type is a warehouse using only electronic shelves, firstly, whether available inventory exists is confirmed, if yes, allocation is performed once according to the trays, when the trays are allocated, whole tray occupation is performed according to the requirement and the number of the trays on each bin, meanwhile, the number of occupied trays is deducted from the required number in the material receiving detail, and the trays are continuously occupied until the number of occupied trays is greater than the required number of the material receiving detail.

When the required number in the material receiving detail is greater than the number of occupied trays, the tray occupation is continued, and meanwhile the number of occupied trays is deducted from the required number in the material receiving detail, so that the trays are continuously occupied until the number of occupied trays is greater than the required number of the material receiving detail.

To ensure accuracy of the allocation, in some embodiments of the present application, inventory allocation rules are determined based on warehouse type, and pick tasks are determined based on the inventory allocation rules and the material details, specifically:

As shown in fig. 6, when the warehouse type is that the electronic shelf and the plane shelf are used simultaneously, firstly judging whether available inventory exists on the electronic shelf, if so, occupying the whole tray according to the required number in the stock-receiving detail until the required number is smaller than the occupied tray number, completing inventory allocation, and if not, further confirming whether available inventory exists on the plane shelf.

To achieve proper allocation of flat racks, in some embodiments of the present application, it is determined whether the flat racks have available inventory, specifically:

Specifically, inventory allocation of the plane shelf is performed according to the whole box of trays, if the actual material receiving requirement is greater than the number of boxes of the trays, the trays of the current number of boxes are indicated to not meet the actual material receiving requirement, the whole box of trays is occupied, and the number of occupied trays is deducted from the required number. If the actual material receiving requirement is smaller than the number of the trays, the number of the trays corresponding to the actual material receiving requirement is occupied if the trays with the current number of the trays can meet the remaining actual material receiving requirement.

For a warehouse using both an electronic shelf and a flat shelf, the inventory allocation rule also needs to consider the Minimum Packing Quantity (MPQ), the trays stored in the flat shelf are single-bin multi-tray, and the actual material-receiving requirements= (material-receiving requirements/MPQ) ×mpq, and the material-receiving requirements/MPQ in the material-receiving details are integer numbers upward.

Step S103, the tray bar codes are scanned based on the picking task, and the trays are placed on corresponding stacking positions of the skip car.

In this embodiment, the order picking task is performed based on the order picking task generated after inventory allocation, and the warehouse operator scans the wire rod code in the WMS to perform the order picking and taking operation.

In order to ensure smooth performance of the picking task, in some embodiments of the present application, the tray bar code is scanned based on the picking task, and the tray is placed on a stack position corresponding to the skip, specifically:

Specifically, first stock is to the material loading structure (a stack position can only go up a dish material once) of chip mounter, and when production begins, the first dish material of beating will use the clout promptly with the electron primordial qi piece of charging tray after beating, other charging trays of the same material. The operator needs to scan the number of the skip car firstly, then scan the bar code, if the bar code is a first batch, the WMS can call a lighting interface according to the scanned number of the skip car and the stack position information, and after the interface is called successfully, the T/B lamp corresponding to the stack position on the skip car can be lighted; the skip stack position is provided with a pressure sensing device, after an operator places the material tray at the corresponding stack position, the lamp can be automatically turned off, meanwhile, skip number and stack position information of the WMS for turning off the lamp can be returned, and the WMS can automatically turn off the corresponding picking task; if the material is the clout, the skip does not have the lamp and lights, and the operation personnel is placed the tray and is needed to close the order picking task after the clout layer, through the mode of branch while choosing, save follow-up letter sorting link, prevent wrong material through the mechanism of lighting simultaneously. After the goods are picked, the skip is directly distributed to the production line, and the skip is not required to be sorted to each stack position again.

In order to prevent material misplacement through a lighting mechanism, in some embodiments of the present application, the skip specifically includes:

Fig. 7 is a schematic structural diagram of a skip car according to the present application, where a T-surface layer is used for placing a T-surface jacket material and is provided with an indicator light; the surface layer B is used for placing the first sleeve material of the surface B and is provided with an indicator lamp; the clout layer is used for placing the clout of T face or B face, does not have the pilot lamp, in addition, all is provided with pressure sensing device at T face layer level B face, pressure sensing device's form does not do specific restriction, pressure sensing device's concrete action is for detecting whether place the charging tray on the skip to and whether the stack position that the charging tray placed is correct, in order to guarantee correct order picking, through the mode of branch while choosing, save follow-up sorting link, prevent wrong material through the light mechanism simultaneously. After the goods are picked, the skip is directly distributed to the production line, and the skip is not required to be sorted to each stack position again.

It should be noted that the above-mentioned skip structure is only a preferred structure of the present application, and other skip structures that divide different layering and set up the pilot lamp also belong to the protection scope of the present application.

To meet the production needs, in some embodiments of the present application, when dispensing trays, the material with the front production date is preferentially dispensed, and if the production dates are the same, the material with the front warehouse entry time is preferentially dispensed.

The embodiment of the application also provides SMT production and distribution equipment based on a WMS system, as shown in FIG. 8, the equipment comprises:

the generating module 10 is configured to generate a plurality of rows of material receiving details based on a material stack table generated by the chip mounter, where the material stack table includes a stack position, an electronic component code, an electronic component description, a single-machine usage amount of the electronic component, a specific mounting point of the PCB, and a material layout, and the material layout includes a T-plane and a B-plane;

a confirmation module 20 for determining inventory allocation rules based on warehouse type and for determining picking tasks based on the inventory allocation rules and the material details;

the scanning module 30 is configured to scan the tray bar code based on the picking task, and place the tray on a corresponding stacking position of the skip.

In summary, the invention organically combines strategies such as overdriving, picking and separating electronic components, offline material preparation and the like for the first time, provides a production and distribution mode based on WMS, realizes overall process management of production and distribution, greatly shortens the conventional SMT production line type changing time, has wider application range, combines the picking task execution and sorting process through interaction of the WMS system and hardware, provides an error-proofing mechanism, and improves the operation efficiency and quality of a warehouse.

Compared with the prior art, the invention has the following advantages:

1. the method is suitable for production and distribution modes of all SMT production lines, and has wider application range.

2. The surface mounting efficiency is not lost, and the overall production efficiency of the production line is higher.

3. The subsequent sorting link is omitted by matching with the transformed skip car, so that the efficiency of warehouse operation is improved.

4. The skip is from taking the light mechanism, prevents wrong material, has improved warehouse operation's quality.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, one of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An SMT production and distribution method based on a WMS system, said method comprising:

scanning a tray bar code based on the picking task, and placing the tray on a stack position corresponding to the skip car;

the inventory allocation rule is determined based on the warehouse type, and the order picking task is determined based on the inventory allocation rule and the material detail, specifically:

when the warehouse type is that the electronic shelf and the plane shelf are used simultaneously, if the available inventory exists in the warehouse position of the electronic shelf, the warehouse is occupied according to the material trays of the whole tray until the required number in the material receiving detail is smaller than the number of the occupied material trays;

2. The method of claim 1, wherein inventory allocation rules are determined based on warehouse type and pick tasks are determined based on the inventory allocation rules and the material details, in particular:

if not, occupying the tray and ending the picking task flow;

3. The method of claim 1, wherein determining whether the flat pallet has available inventory is specifically:

4. A method according to claim 3, characterized in that the actual collar material demand is determined based on the collar material details, in particular:

actual stock requirement= (stock requirement in stock detail/MPQ) MPQ;

5. The method of claim 1, wherein the skip comprises:

6. The method of claim 5, wherein the tray bar code is scanned based on the picking task and the tray is placed on a corresponding stack of the skip, in particular:

7. The method of claim 2, wherein the material having a preceding production date is preferentially dispensed when dispensing the dispensing tray, and if the production dates are the same, the material having a preceding warehouse entry time is preferentially dispensed.

8. The method of claim 1, generating a plurality of rows of material-receiving details based on a stack table generated by a chip mounter, specifically:

9. An SMT production and distribution device based on a WMS system, said device comprising:

the scanning module is used for scanning the tray bar codes based on the picking task and placing the trays on corresponding stack positions of the skip car;

the confirmation module is specifically configured to: