JP2003058221A - Method for producing many kinds of assembly structures composed of a plurality of unit components - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing many kinds of assembly structures composed of a plurality of unit components, capable of shortening time required for material supply, working and final assembly without the need of keeping management of the unit components. SOLUTION: Materials for forming a plurality of the unit components (18-28) are supplied to a carrying line according to an assembly structure unit component assembly process order, the unit components are successively manufactured in an assembly work order by a series of working machines (process, short side bending process and drawing process, etc.), equipped in the carrying line and the unit components are successively assembled thereafter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a multi-product assembly structure including a plurality of unit parts by assembling a plurality of unit parts manufactured through a manufacturing line to produce an assembly structure.

[0002]

2. Description of the Related Art For example, frozen / refrigerated showcase products include showcases of various types such as flat type, multistage type, round type, corner type, and canopy type showcases. Is composed of a plurality of unit parts in which a plurality of types of steel plate parts are combined.

As a production method for each of these models, conventionally, various processing machines are connected by a carrier device to form a line,
A so-called kanban system is adopted in which various steel plates stored in the material warehouse are taken out and sequentially supplied to a processing machine, the same articles are produced in lots, and they are stocked.

Since the conventional processing machine is produced on the assumption of lot production, in order to produce another steel plate component, a certain amount of steel plate component is produced in a predetermined amount in a lot and then the operation is stopped. Then, each time, the operator reset the machining program, etc., and put in the required steel sheet and restarted.

Therefore, when manufacturing various steel plate parts one by one, it is necessary to repeat the operation of stopping and restarting the operation for each one. Then, in order to manufacture the final product, various parts which have been manufactured are assembled and assembled.

[0006]

However, if the conventional lot production system is continuously adopted under the situation where high-mix low-volume production is desired, the machining program must be switched for each part, The production lead time becomes a problem, and it is necessary to store the finished parts for each assembly in preparation for assembly, which complicates the storage management of the parts, and an efficient part production method in high-mix low-volume production. Was desired.

The present invention has been made by paying attention to such problems, and it is possible to greatly reduce the time required from the material supply to the processing and the final assembly, and it is not necessary to store and manage the unit parts. An object of the present invention is to provide a method for producing a multi-product assembly structure including a plurality of unit parts.

[0008]

In order to solve the above-mentioned problems, a method for producing a multi-product assembly structure comprising a plurality of unit parts according to the present invention comprises a material for forming the plurality of unit parts, It is characterized in that the assembly structure is supplied to a transfer line in the order of the assembly process of the unit parts, a series of processing machines installed in the transfer line sequentially manufactures the unit parts in the order of assembly and processing, and then these unit parts are sequentially assembled. I am trying. According to this feature, since the unit parts constituting the assembly structure are manufactured and supplied in the order of the assembly process, not only can the assembly work of the assembly structure be efficiently performed, the production lead time can be shortened, and the assembly structure can be manufactured. The assembled unit parts are assembled immediately so there is no need to store them.

In the method for producing a multi-product assembly structure comprising a plurality of unit parts according to the present invention, the materials are stocked by the material warehouse according to the unit parts, and the series of processing machines perform shearing and punching. It is preferable to process at least one of processing, bending and drawing. By doing this, since the materials are stored in advance according to the unit parts by type, the materials can be supplied smoothly and the main processing such as shearing, drilling, bending and drawing can be performed. It can be applied to assembled structures.

According to the method for producing a multi-product assembly structure comprising a plurality of unit parts of the present invention, a command of a material take-out order corresponding to the multi-product assembly structure from the material warehouse and a material transfer line instruction are given. It is preferable that the command of the input timing, the selection command of each processing machine, and the processing content command in the processing machine are given by the higher-order control device, and the execution based on the command is given by the lower-order control device. In this way, the production time required from material supply to unit component supply can be set to a minimum by the upper and lower control devices, and the production procedure of various unit parts according to the type of assembly structure in the upper control device. By inputting, you can flexibly deal with the production of all kinds of assembly components.

In the method of producing a multi-product assembly structure including a plurality of unit parts according to the present invention, it is preferable that the upper control device also controls inventory control of the material warehouse.
In this way, material management without waste can be realized and the labor required for storage can be saved.

In the method for producing a multi-product assembly structure comprising a plurality of unit parts according to the present invention, the material for forming the plurality of unit parts comprises various steel plates corresponding to the unit parts, The body is preferably a steel plate part used in a freezing / refrigerating showcase. If you do this,
It is possible to more efficiently produce a large number of types of steel plate products such as a frozen / refrigerated showcase and a large number of unit parts constituting the product.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 show an embodiment of the present invention. FIG. 1 is a side view of a multi-stage freezing / refrigerating showcase to which the present invention is applied, and FIG. 2 is also a plurality of unit parts. Is an exploded side cross-sectional view of an outer case composed of FIG. 3, FIG. 3 is a plan view of various steel plates that are raw materials that form the unit parts, and FIG. 4 is a flow diagram of a production line that produces an assembly structure for each unit part. FIG. 5 is a block diagram showing a process of producing an assembly structure from a steel plate for each unit part.

Reference numeral 1 shown in FIG. 1 indicates a multi-stage freezing / refrigerating showcase (hereinafter referred to as a multi-stage showcase) applied as an assembly structure of the present invention. A case 3, an outer case 8 as a heat insulating case, and a product display space 6 as a cool box that is opened forward by a side plate (not shown) are configured.
A plurality of display shelves 7 fixed to the display shelf 7 allows the products to be displayed in multiple stages.

An insertion passage 9 is provided between the inner case 3 and the outer case 8 arranged outside the inner case 3 as a cool air circulation path, and the fan 10 is driven by driving the fan 10. The air is taken into the lower insertion passage 9 from the inlet 11 provided at the lower front of the product display space 6, and the taken air is cooled by the cooler R so that the air is convected in the direction of the arrow in the figure. The display space 6 can be cooled to a predetermined temperature at which frozen foods, fresh foods, etc. can be displayed.

Further, the intake port 1 below the discharge port 12 which is an outlet provided in the upper front part of the product display space 6.
Since cold air is discharged toward 1, and an air curtain is created in the front of the product display space 6, diffusion of cool air in the product display space 6 and heat from the outside are prevented, and the product display space is The temperature inside the section 6 is kept constant.

As shown in FIG. 2, the assembly structure 14 constituting the outer case 8 which is a main part of the multi-stage showcase 1 is formed into a housing by combining a plurality of steel plates formed in various shapes. Has been formed.

Focusing on this assembly structure 14, this assembly structure 14 has a lower body assembly 1 as a base.
5, an upper assembly 16 at the intermediate rear surface and a top assembly 17 at the top end portion. Further, the "assembled structure" in the claims of the present invention means all that are made up of unit parts, and thus includes "assembled substructure".

More specifically, as shown in FIG. 2, the body assembly 15, which is one of the subassemblies for constructing the outer case 8 as the assembly structure, is provided with the rear liner 18 and the bottom liner 20 arranged inside. , The front liner 21, the shell front 22, the shell rear 23, which are arranged outside,
The shell bottom 24 is made up of steel plate parts as various kinds of unit parts.

The upper assembly 16, which is one of the assembly substructures, is composed of steel plate parts as unit parts consisting of an upper liner 25 arranged inside and an upper panel 26 arranged outside. The top assembly 17, which is one of the assembly substructures, is composed of two types of steel plate parts, which are a top panel 27 located on the upper surface and a top liner 28 located on the lower surface.

Next, a method of manufacturing and supplying unit parts constituting the assembly structure according to the present invention will be described with reference to FIGS.

First, there are various types of frozen / refrigerated showcase products such as a flat type, a multi-stage type, a round type, a corner type, and a canopy type showcase. In this embodiment,
The assembly structure related to the model of the multi-stage showcase will be described.

The assembly structure 14 which constitutes the outer case 8 of the multi-stage showcase includes the above-described three assembly substructures, which are directed upward from the body assembly 15 at the lower portion, to the upper assembly 16 and the top. The assembly 17 is assembled in this order.

Therefore, in the production method of the present invention, the steps of processing and supplying the steel plate, which is a raw material, for each unit component of each assembly substructure constituting the body assembly 15, the upper assembly 16 and the top assembly 17 are performed. Set.

In the production method of the present invention, a host computer PC1 as one upper control device and two control computers PC2 and PC3 are used. In the host computer PC1, the type of the assembly structure 14 is used. And the selected assembly structure 14 is divided and set for each of the assembly substructure, that is, the body assembly 15, the upper assembly 16, and the top assembly 17 according to the assembly procedure.

Next, the rear liner 18, the bottom liner 20, and the front liner 2 which are the unit parts of the body assembly 15.
1, a shell front 22, a shell rear 23, a shell bottom 24, and an upper liner 25 and an upper panel 26 which are unit parts of the upper assembly 16, and a top panel 27 and a top liner 28 which are unit parts of the top assembly 17. The type of material (thickness and size) before storage, the storage position, the order of taking out the material, the time of loading into the transfer line, the selection of the processing machine according to the type of material, the processing method, etc. are set. The information is set for each of a plurality of assembled structures so that not only the assembled structure 14 but also other assembled structures can be assembled.

More specifically, an address is set as a storage location in the material warehouse 30 that stores the steel plates that are the materials for these unit parts by type, and the punching and cutting operations are the processing machines corresponding to each steel plate. Selection of the rebra 32 that performs processing, the short-side bending machine 34 that performs bending on the short side, the drawing machine 35 that performs drawing, and the bending machine 36 that performs bending, and the NC processing data, etc., of the two machines. It issues a transmission command to the control computers PC2 and PC3.

On the other hand, the two control computers PC2 and PC3, which are subordinate control devices, take out a predetermined steel plate from an address which is a storage location in the material warehouse 30 in accordance with the assembly procedure, and sequentially perform the libra 32 and the short side bending. The machine is conveyed to the processing machine 34, the drawing machine 35, and the bending machine 36, and based on the NC processing data corresponding to various unit parts transmitted from the host computer PC1 of higher order, the processing machines are instructed to execute the processing. The transport control is performed on each of the transport lines T1, T2, T3, and T4 via the sequencer CO.

Next, an embodiment relating to the flow of the manufacturing process of the unit parts constituting the assembly structure will be described with reference to FIGS.

First, the body assembly 15 is sequentially processed according to the assembly process order. In the first step, the steel plates of the rear liner 18, the bottom liner 20, the front liner 21, the shell front 22, the shell rear 23, and the shell bottom 24 shown in (a) to (e) of FIG. In accordance with an instruction from the control computer PC2 shown in the flow chart of the production line, the materials are sequentially taken out from a predetermined address in the material warehouse 30.

Among the steel plates taken out from the material warehouse 30, the rear liner 18, shell rear 23, shell bottom 2
4, the transport lines T1, T2, T3 shown in FIG.
It is sent to the libra 32 and the short side bending machine 34 via T4, and only the drilling, cutting and short side bending steps shown in FIG. 5 are executed in response to commands from the control computers PC2 and PC3.

Similarly, the bottom liner 20 among the steel plates taken out from the material warehouse 30 is processed by the short side bending machine 34 and then sent to the drawing machine 35 to perform drawing work. It

Among the steel plates taken out from the material warehouse 30, the front liner 21 and the shell front 2
In No. 2, after being processed by the short-side bending machine 34, bending by the bending machine 36 is executed.

As a result, the processing steps of the unit parts constituting the body assembly 15 are completed one after another in the order of the assembling steps, so that these assembly steps are executed in the order in which the unit parts are prepared and the body assembly 15 is assembled. . The assembled body assembly 15 moves to the next preheating and foaming process.

Next, when the shell bottom 24, which is the final component of the body assembly 15, is completely machined by the libra 32 for executing the first machining step, immediately after that,
According to a command from the control computer PC2, a steel plate which is a material of the upper liner 25 which is a unit component of the next upper assembly 16 is taken out from a predetermined address in the material warehouse 30.

As described above, since the next work is controlled by the computer in consideration of the processing time of the steel sheet, the flow of the steel sheet in the production line can be efficiently performed.

The steel plate 25 taken out is the body assembly 15
In the same manner as above, processing is carried out by being sent to the libra 32 and the short side bending machine 34 via the transport lines T1, T2, T3, T4. Immediately after the completion, the steel plate that is the material of the upper panel 26 that is the next unit part is
When the two types of unit parts constituting the upper assembly 16 are prepared by taking out from a predetermined address in the above and performing the same processing step as described above, these assembly steps are executed, and the next preheating and foaming are performed. The process is executed.

Then, the assembled upper assembly 16
Is assembled on top of the already assembled body assembly 15.

Next, the top panel 2 of the top assembly 17
7 and the top liner 28 are processed, but at the start of the processing step of the top panel 27, immediately after the processing by the libra 32 which is the first step of the upper panel 26 is completed, the next top assembly 17 is processed. The steel plate, which is a material for the top panel 27 and the top liner 28, which are unit parts, is taken out from a predetermined address in the material warehouse 30 and predetermined processing is executed by the libra 32 and the short side bending machine 34 in the same manner as described above. .

As described above, by manufacturing the unit parts in the order of the assembling process, the unit of the top assembly 17 to be assembled next while the upper assembly 16 is assembled on the upper portion of the body assembly 15. Since the parts are processed,
The production lead time of the assembly structure can be greatly reduced.

When the two types of unit parts constituting the top assembly 17 are prepared, these assembling steps are executed, the following preheating and foaming steps are executed, and when the top assembly 17 is completed, this top assembly is completed. 17 is a body assembly 1
5 is assembled on the top of the upper assembly 16 assembled on the upper part of the assembly 5, and the assembly structure 14 constituting the outer case 8 of the multi-stage showcase 1 is completed.

Therefore, according to the method for producing an assembled structure according to the embodiment of the present invention, the steel plate which is a component of the assembled structure 14 constituting the multi-stage showcase 1 is removed from the rear liner 18 of the body assembly 15. Since the top liner of the top assembly 17 is sequentially supplied and processed from the material warehouse 30 according to the assembly process order, the assembly work of the assembly structure 14 can be efficiently performed and the production lead time can be shortened. Moreover, unlike the conventional production methods, it is not necessary to store and manage intermediate processed unit parts in preparation for assembly.

Further, the steel plates for the body assembly 15, the intermediate rear upper assembly 16 and the top top assembly 17 necessary for the assembly structure 14 are stored in the material warehouse 30 by type. It is possible to smoothly supply the steel plate under computer control. Further, if other assembled structures such as the inner case are to be produced continuously, it goes without saying that various steel plates for that purpose are prepared in the material warehouse 30.

Further, according to the production method of the present invention, since the processing machine is provided in the plural conveyor lines so that the main processing such as shearing, drilling, bending and drawing can be performed, it can be applied to various assembled structures. it can.

Further, taking out the steel plate from the material warehouse 30,
Since the input to the transfer line, the selection of the processing machine, and the processing contents are all command-controlled by the computer, it is possible to realize efficient production with less operation loss time in the production line.

Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to these embodiments. For example, the stock management of the material warehouse 30 is performed by the host computer PC1, Material management without waste can be realized.

[0048]

According to the present invention, the following effects can be obtained.

(A) According to the invention described in claim 1, since the unit parts constituting the assembly structure are manufactured and supplied in the order of the assembly process, the assembly work of the assembly structure can be efficiently performed. Not only can lead times be shortened, but the manufactured unit parts are assembled immediately so there is no need to store them.

(B) According to the second aspect of the present invention, since the materials are stored in advance according to the unit parts by type, the materials can be smoothly supplied, and shearing, drilling, Main processing such as bending and drawing is possible, so it can be applied to various assembled structures.

(C) According to the third aspect of the invention, the upper and lower control devices can set the production time required from the material supply to the supply of the unit parts to a minimum, and the upper control device has an assembly structure. By inputting the manufacturing procedures of various unit parts according to the type, it is possible to flexibly cope with the production of all types of assembly components.

(D) According to the invention described in claim 4, material management without waste can be realized, and the labor required for storage can be saved.

(E) According to the invention described in claim 5, it is more efficient for a large number of types of steel plate products such as a freezing / refrigerating showcase and having a large number of unit parts constituting the product. Can be produced.

[Brief description of drawings]

FIG. 1 is a side view of a multistage freezing / refrigerating showcase to which the present invention is applied.

FIG. 2 is an exploded side sectional view of an outer case, which is also composed of a plurality of unit assemblies.

FIG. 3 is a plan view of various types of steel plates that are raw materials forming the unit assembly.

FIG. 4 is a flow diagram of a production line for producing an assembly structure for each unit assembly.

FIG. 5 is a block diagram showing a process of manufacturing a steel plate for each unit assembly.

[Explanation of symbols]

1 Multi-stage showcase (freezer / refrigerator showcase) 3 Inner case 6 Product display space 7 Display shelf 8 Outer case 9 Insert passage 10 Fan 11 Inlet 12 Outlet 14 Assembly structure 15 Body assembly 16 Upper assembly Solid 17 Top assembly 18 Rear liner 20 Bottom liner 21 Front liner 22 Shell front 23 Shell rear 24 Shell bottom 25 Upper liner 26 Upper panel 27 Top panel 28 Top liner 30 Material warehouse 32 Libra 34 Short-side bending machine 35 Drawing machine 36 Bending machine Machine CO Sequencer PC1 Host computer PC2, PC3 Controlling computer R Cooler T1 to T5 Transfer line

Claims (5)

[Claims] 1. A method for producing a multi-product assembly structure comprising a plurality of unit parts, wherein a material for forming the plurality of unit parts is transported according to a unit part assembly process order of the assembly structure. A multi-product assembly structure comprising a plurality of unit parts, characterized in that the parts are sequentially supplied to a line, the unit parts are sequentially manufactured by a series of processing machines equipped in the transfer line in the order of assembling, and then these unit parts are sequentially assembled. Body production method. 2. The material is stocked by a material warehouse by type according to unit parts, and the series of processing machines processes at least one of shearing, drilling, bending or drawing. A method for producing a multi-product assembly structure comprising a plurality of unit parts described in. 3. A command for a material take-out order corresponding to a multi-product assembly structure from the material warehouse, a command for loading a material into a transfer line, a command for selecting various processing machines, and processing in the processing machine. The method for producing a multi-product assembly structure comprising a plurality of unit parts according to claim 2, wherein the command of the contents is given by a higher-order controller, and the execution based on the command is done by a lower-order controller. 4. The method for producing a multi-product assembly structure comprising a plurality of unit parts according to claim 3, wherein the host controller also controls inventory control of the material warehouse. 5. The material for forming the plurality of unit parts is made of various steel plates corresponding to the unit parts, and the assembly structure is a steel plate part used for a freezing / refrigerating showcase. 4. A method for producing a multi-product assembly structure comprising a plurality of unit parts according to any one of 4 above.