JP2000037685A - Method for estimating disjoining time of recycle product, disjoining method, electronic part and plan supporting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately calculate the disjoining time required in the disjoining of a recycle product within a short time without actually disjoining the product in evaluating the easy disjoining properties of the product from the disjoining time required in the disjoining of the recycle product. SOLUTION: When the disjoining time of the printed circuit board constituting of an on-vehicle electronic device is estimated at first, the time (unit disjoining time) required in the detachment of the electronic part attached to the printed circuit board is preliminarily measured at every kind (resistor R, capacitor C, transistor Tr,...) of the attached electronic part. When the disjoining time is calculated, the product of the unit disjoining time at every kinds of parts and the number of parts is calculated and a disjoining time is estimated from the sum total of product values. As a result, the disjoining time of the printed circuit board can be calculated without actually disjoining the board and easy disjoining properties can be evaluated from a plan stage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disassembly time estimating method for estimating a disassembly time required to disassemble a recycled product in which various recyclable parts are assembled, and a disassembly method for disassembling a product after the disassembly time is estimated. The present invention relates to a design support device suitable for designing a recycled product using an electronic component disassembled by a disassembly method and a disassembly time estimation method.

[0002]

2. Description of the Related Art Conventionally, from the necessity of protecting the global environment,
In manufacturing industrial products, there is a need for a design method that takes into consideration the impact on the global environment. As such a design method, for example, as disclosed in Japanese Patent Application Laid-Open No. Hei 7-24831, regarding the structural members of each component constituting the electrical appliance, the magnitude of the influence on the global environment is small and the recycling is difficult. The evaluation score is attached in advance from the viewpoint, the product of this evaluation score and the weight ratio of each part to the whole product is obtained, and the total evaluation score of the electric appliance is calculated from the sum of the product values. Highest score of 80
% Is known.

In other words, in recent years, when designing an industrial product such as an electric appliance, not only the production and sales aspects of the product, such as performance, appearance, operability, durability and productivity, but also the product to be sold is constituted. It is also required to take into account the impact of each part on the global environment and the difficulty in recycling each part.

[0004]

However, when evaluating the degree of difficulty of recycling each part, in consideration of the cost of recycling each part, each part is detached from the product body and the product is removed. It is necessary to determine the dismantling time required for dismantling.

However, conventionally, when such disassembly time is obtained, the time required for disassembling the product after actually assembling the product is measured.
There is a problem that it takes a long time to evaluate the disassembly time, that is, the easy disassembly of the product.

[0006] This problem arises especially in a product having a large number of components assembled in a product body, for example, a printed circuit board in which various electronic components such as a resistor, a capacitor, a transistor, an IC, etc. are assembled. Is a major problem when evaluating

[0007] The present invention has been made in view of the above problems, and in evaluating the ease of disassembly of a product based on the disassembly time required to disassemble a recycled product in which recyclable parts are assembled, the disassembly time is determined. It is an object of the present invention to enable a product to be accurately obtained in a short time without actually dismantling a product.

[0008]

According to a first aspect of the present invention, there is provided a method for estimating the disassembly time, which comprises the steps of disassembling a recycle product having various recyclable parts assembled therein. For this purpose, first, for each type of component to be assembled to the product body in the same manner, a unit disassembly time required for removing the component from the product body is measured in advance.

When actually estimating the disassembly time, the number of parts assembled to the product body is obtained for each part type, and the product of the number of parts for each part type and the unit disassembly time of the part is obtained. From the calculated disassembly time for each component type, and estimates the disassembly time of the recycled product from the sum of the calculated disassembly times for each component type.

In other words, according to the method of the present invention, in evaluating the ease of disassembly of a recycled product from the disassembly time of the product, instead of actually disassembling the product and measuring the disassembly time as in the related art, The number of parts an (n is 1, 2, 3,... Assigned to each part type) for each part type assembled in the same manner in the product body (in other words, removable in the same method and time) Is obtained, and the product of the number an and the unit disassembly time tn of the part is calculated. From the sum of the calculated product value (tn × an) of the entire product, the following equation (1) is obtained. Thus, the disassembly time T of the product is estimated.

[0011]

(Equation 1)

In the expression (1), A represents the number of component types of all the components assembled in the product. Therefore, according to the method of the present invention, if the unit disassembly time is measured in advance for each type of parts assembled to the product, the disassembly time of the product can be accurately obtained in a short time without actually disassembling the product. This makes it possible to evaluate the disassembly of the product very easily.

Further, according to the method of the present invention, since the disassembly time of the assembled product can be estimated without actually disassembling the product, the disassembly time of the product (and hence easy disassembly) can be estimated.
Can be evaluated from an early stage of product design without trial production of the product, and the design time for designing a product that is easy to recycle can be shortened.

Here, the method of the present invention can be applied to a product using a large number of components of a plurality of types, and in particular, the disassembly time of a printed circuit board on which various electronic components are assembled as described in claim 2 If it is used when estimating, the effect can be more exhibited. In other words, printed circuit boards usually contain resistors, capacitors, coils, transistors, diodes,
Since a large number of various electronic components such as ICs, LSIs, and the like are assembled, it takes time to disassemble them. However, at the time of disassembly, for each component type, using a specific jig, it is only necessary to remove from the substrate body in order, if the unit disassembly time for each component type is measured, the unit disassembly time, The disassembly time can be estimated in a short time from the number of parts for each part type obtained from the parts list and the like. Therefore, if the method of the present invention is applied to a printed circuit board having a large number of mounted components and requiring a long time to disassemble, it becomes possible to evaluate the ease of disassembly of the printed circuit board very simply and efficiently.

In the case of a printed circuit board, the types of electronic components assembled on the substrate are substantially the same even if the substrates have different uses, so that the unit disassembly time can be measured for each type of electronic component. The measured data can be used for estimating the dismantling time of various printed circuit boards, and the evaluation of easy dismantling can be performed more efficiently.

Next, a third aspect of the present invention is a method for dismantling a recycled product, wherein the dismantling time is estimated using the dismantling time estimating method according to the first or second aspect, and then the recycled product is dismantled. It is characterized by dismantling. According to the disassembly method according to the third aspect, since the dismantling operation is started after estimating the disassembly time of the recycled product, the disassembly order of the recycled product, the number and arrangement of workers who dismantle the product, and the like, are disassembled. The work process for performing the recycle can be optimally set, and the disassembly of the recycled product can be performed smoothly.

According to a fourth aspect of the present invention, there is provided a recyclable electronic component, which is disassembled by the disassembly method according to the third aspect. According to the electronic component according to the fourth aspect, the disassembly method estimates the disassembly time according to the third aspect, and the electronic component is smoothly disassembled. It is possible to prevent that the desired characteristics cannot be obtained due to being unusable or being damaged at the time of disassembly, so that it can be easily reused.

According to a fifth aspect of the present invention, there is provided a design support apparatus used for designing a recycle product into which various recyclable parts are assembled. Means and dismantling time estimating means. The unit disassembly time storage means is provided for each type of component that is used to design a recycled product, and for each type of component that has the same method of assembling to the product itself. The unit disassembly time is stored in the unit disassembly time, and the unit disassembly time is stored in the unit disassembly time storage unit. Aggregate for each component type.
Further, the disassembly time estimating means calculates the disassembly time for each component type based on the number of components for each component type counted by the component number counting means and the unit disassembly time for each component type stored in the unit disassembly time storage means. Is calculated, and the disassembly time of the designed product is estimated from the calculated sum of the disassembly times for each component type. Then, the estimation result by the disassembly time estimation means is notified to the designer.

Therefore, according to the design support apparatus of the fifth aspect, when a designer designs a recycled product using the apparatus, the disassembly time of the designed recycled product is set to the first aspect. Alternatively, it is automatically estimated according to the estimation method described in claim 2, and the estimated disassembly time is notified to the user. Therefore, designers can design recycled products while checking the dismantling time,
Recycled products that are easy to dismantle can be easily designed.

The design support device is a design support device generally used in the design of machines and electronic devices, such as a CAD and a circuit simulator.
By providing the design support apparatus with a function of automatically estimating the disassembly time of a recycled product that has been designed or completed in accordance with the disassembly time estimation method according to claim 1 or 2, This makes it possible to easily design a recycled product that can be easily disassembled (in other words, the time required for disassembly is short).

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following, as one embodiment of the present invention, the disassembly time of a printed circuit board constituting various on-vehicle electronic devices mounted on an automobile is estimated, so that the printed circuit board (and hence the The method for evaluating the ease of disassembly of the above is described.

In this embodiment, as an on-vehicle electronic device, an anti-skid control device (ABS-ECU) for controlling a braking force applied to wheels during vehicle braking, a fuel injection amount and an ignition timing of an engine which is a power source of the vehicle, and the like. Control unit (E / G-ECU) for controlling the air conditioner (A / C-ECU) for controlling the air conditioner (air conditioner) so that the temperature in the passenger compartment becomes the set temperature, and a signal from the temperature sensor. A / C amplifier for amplification, wireless door lock device that switches door lock / unlock state by receiving door lock / unlock signal (infrared light etc.) transmitted from outside the vehicle, etc. In order to evaluate the ease of disassembly of various electronic devices, all electronic components mounted on the printed circuit board that constitutes each of these electronic devices are classified based on the mounting method on the substrate, etc. , For each type of electronic component that classification, measured in advance a unit disassembly time required to remove the electronic component from the substrate.

FIG. 1 shows the measurement results of the unit disassembly time for each mounted component, and FIG. 2 shows the disassembly method for each mounted component. That is, an electronic component (THD component) having a lead wire inserted into a hole formed in the printed board and soldered to a wiring pattern of the board, or directly mounted on the board surface via an adhesive or the like, is mounted on the printed board. The electrode parts formed on the outer wall are soldered to the wiring pattern of the substrate, and the heat is radiated from the heat from heat generating components such as a chip component (SMD component), a connector for supplying power or connecting to an external device, and a transistor or IC. Solder screws (solder screws) used to fix electronic components such as heat sinks (so-called heat sinks) and heat sinks to the board, and after the fixation, solder is applied to prevent loosening due to vibration or the like. Many electronic components are assembled.

Therefore, in this embodiment, as shown in FIG. 2, a jig or a tool used for disassembly and a disassembly method using the same are set in advance for each of the electronic components, and the set disassembly method is used. The time required to remove one electronic component from the printed circuit board is measured, and this is set as the unit disassembly time of each electronic component as shown in FIG.

In FIG. 1, "R", "C", "T"
“r”, “D”, and “L” respectively represent a leaded resistor, a capacitor, a transistor, a diode, and a coil, which are THD components, and “SMD” is, as shown in FIG. Represents SMD components such as resistors, capacitors, transistors, and ICs that can be easily disassembled using hot tweezers.

In FIG. 1, the unit disassembly time of “IC, LSI” is set to a time from 54 seconds to over 600 seconds, and the unit disassembly time of “connector” is from 60 seconds to over 1500 seconds. The time is set. this is,
For example, even if “IC, LSI” is an SMD component and it is decided to use the spot heater shown in FIG. 2 for disassembly, the actual disassembly time is determined by the shape and size of the component, the number of leads or electrodes. The disassembly time greatly differs depending on the shape, size, number of electrodes connected to the substrate, and the like.
This is because the types of “C, LSI” and “connector” are further subdivided, and a unit disassembly time is set for each subdivided type.

Next, when estimating the disassembly time of each printed circuit board, the number of components mounted on the printed circuit board is determined for each component type when the unit disassembly time is set (FIGS. 3 and 4). reference). In FIG. 3, (a) to (c)
Are ABS-ECU, E / G-ECU and A / C-EC
U represents the number of components for each component type mounted on each printed circuit board constituting U, and is shown in FIGS.
Represents the number of components for each component type mounted on the printed circuit boards that constitute the A / C amplifier and the wireless door lock device, respectively. The number of components for each component type in each printed circuit board can be easily obtained from a list of components mounted on each printed circuit board or the like.

Next, based on the number of components to be mounted on the printed circuit board for each component type obtained as described above and the unit disassembly time measured in advance for each component type, the above-mentioned equation (1) is obtained. Then, the disassembly time T of the printed circuit board is calculated. That is, the number an of the components mounted on each printed circuit board for each component type an
Is multiplied by the unit disassembly time tn, the disassembly time (tn × an) is obtained for each component type, and the sum thereof is calculated to calculate the disassembly time T of the entire printed circuit board.

As a result, ABS-ECU, E / G-EC
U, A / C-ECU, A / C amplifier, and the same time as the actual disassembly time measurement result shown in FIG. 5 could be obtained as the disassembly time of each printed circuit board constituting each of the wireless door lock devices. . In addition, when the disassembly time of each printed circuit board is actually measured as in the related art, it takes about 23 minutes to 4 hours or more, whereas in this embodiment, the disassembly time is obtained in a few minutes to 10 minutes or less. Was completed.

Therefore, according to the present embodiment, in evaluating the easy disassembly of an electronic device having a printed circuit board on which a large number of electronic components are assembled, the printed circuit board can be extremely easily and quickly dismantled without actually being dismantled. In designing a product that is easy to dismantle in consideration of product recycling, it is necessary to evaluate the ease of disassembly of the product from the design stage and to carry out optimal design. Will be possible.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and can take various forms. For example, in the above embodiment,
In order to evaluate the ease of disassembly of the electronic device mounted on the vehicle, the case of estimating the disassembly time of the printed circuit board that constitutes each of these electronic devices has been described.
In the case of estimating the disassembly time of a printed circuit board used in various electric appliances other than automobiles, such as home appliances, electronic products such as word processors and personal computers, the same effects as in the above embodiment can be obtained. Can be obtained. Further, the method of the present invention can also be applied to a case where a disassembly time other than a printed circuit board is determined.

According to the method of the present invention, the disassembly time of a recycled product is determined from the unit disassembly time for each type of component constituting a recycled product such as a printed circuit board and the number of components in accordance with the above-mentioned equation (1). However, if this calculation is performed using a computer, the disassembly time can be estimated more easily and efficiently.

That is, the measurement result of the unit disassembly time for each component type constituting the recycled product whose disassembly time is to be estimated is stored in a storage device (hard disk, optical disk, magneto-optical disk, etc.) mounted or connected to the computer. When calculating the disassembly time, if the number of parts for each component type is input by an external operation and the computer calculates the disassembly time based on the above equation (1), the disassembly time can be calculated. Can be obtained very easily, and the workability at the time of product design can be further improved.

Further, if such an arithmetic function is provided to a design support device (CAD, circuit simulator, etc.) conventionally used for design, and a function for automatically totalizing the number of components for each component type is provided, By simply inputting the unit disassembly time for each component type in advance, it is possible to sequentially display the disassembly time in the product design process.

Hereinafter, an example of the design support apparatus configured as described above will be described with reference to FIG. This design support device
It is a general device including a computer, an input device such as a keyboard and a tablet, and an output device such as a display and a printer. The computer has a function as a design support device such as a CAD and a circuit simulator. A storage medium (hard disk, optical disk, magneto-optical disk, etc.) for storing design results such as programs, circuit diagrams, and component lists is provided.

Then, the computer executes various processes for design support in accordance with the program shown in the flowchart of FIG. 6 stored in the storage medium. In order to execute this program, a list of parts used for a product to be designed (part candidate list) and a product among various parts registered in the part candidate list are stored in a storage medium in advance. The unit disassembly time tn that measures the time required for disassembly for each component is stored in advance for each component type disassembled in the same manner when disassembly is performed.

As shown in FIG. 6, when the design support device (specifically, a computer) is started, first, in S110 (S represents a step), an instruction from the designer is inputted through the input device. In accordance with the above, a drawing process, a circuit simulation, and the like are performed, product design support is performed, and a design process of storing a product drawing, a component list, and the like obtained as a result of the design support in a storage medium is executed. Note that this design process is performed by a general CA.
D is the same as the processing executed for design support in a circuit simulator or the like.

Next, when a product is designed by the design process of S110, the number of components used in the designed product is determined in S120 from a drawing or a component list showing the design result. Is executed for each component type corresponding to the unit disassembly time tn stored in.

In S130, the unit disassembly time tn is read from the storage medium for each component type used in the product designed in S110, and the read unit disassembly time tn for each component type is read from S120. Based on the number an for each component type obtained in the aggregation process,
Calculate (estimate) the disassembly time T of the designed product using the formula
Then, in S140, the calculated disassembly time T is displayed on the display.

Finally, at S150, the calculated disassembly time T and a target value (time) preset by the designer are set.
If the disassembly time T is larger than the target value, it is determined in S110 that the time required for disassembly of the product designed this time is too long, and the process shifts to S110 again. When the disassembly time T is equal to or less than the target value, it is determined that the disassembly of the product designed this time is satisfactory, and the process for design support is temporarily terminated.

As described above, according to the design support apparatus shown in FIG. 6, the disassembly time T of the designed product is predicted, and the result is displayed on the display, so that the designer can know the disassembly time T of the product. In addition to the notification, if the disassembly time T does not fall below the target value set in advance, the design process is started again to urge the designer to review the design.

Therefore, the designer can design the product while checking the disassembly time of the product, and can easily design a product having a short disassembly time and excellent disassembly. In the design support device shown in FIG. 6, a storage medium such as a hard disk functions as a unit disassembly time storage unit according to claim 5, and the process of S120 is performed as a component number counting unit according to claim 5. The processing of S130 functions as the dismantling time estimating means according to claim 5.

[Brief description of the drawings]

FIG. 1 is a graph showing an example of a unit disassembly time for each mounted component on a printed circuit board.

FIG. 2 is an explanatory diagram illustrating an example of a disassembly method for each mounted component on a printed circuit board.

FIG. 3 shows an ABS-ECU, an E / G-ECU and an A / C.
-It is a graph showing an example of the number of parts for every kind of parts mounted on each printed circuit board constituting the ECU.

FIG. 4 is a graph showing an example of the number of components for each component type mounted on each printed circuit board constituting the A / C amplifier and the wireless door lock device.

FIG. 5: ABS-ECU, E / G-ECU, A / C-
4 is a graph showing an example of a measurement result of a disassembly time of each printed circuit board constituting an ECU, an A / C amplifier, and a wireless door lock device.

FIG. 6 is an explanatory diagram illustrating an example of a design support device to which the present invention has been applied.

Claims (5)

[Claims] 1. A method for estimating a disassembly time required to disassemble a recycled product in which various recyclable parts are assembled, the method comprising:
The unit disassembly time per part required to remove the part from the product body is measured in advance, and when estimating the disassembly time, the number of parts assembled to the product body is obtained for each part type. The disassembly time for each part type is calculated from the product of the number of parts for each part type and the unit disassembly time for the part, and the disassembly time for the recycled product is estimated from the sum of the disassembly times for each part type. A method for estimating the dismantling time of a recycled product, characterized in that: 2. The method according to claim 1, wherein the recycled product is a printed circuit board on which various electronic components are assembled. 3. A method for dismantling a recycled product having various recyclable parts assembled therein, the method comprising estimating a dismantling time using the dismantling time estimating method according to claim 1 or 2, and resuming the recycled product. A method for dismantling a recycled product, comprising dismantling a recycled product. 4. An electronic component which is disassembled by the disassembly method according to claim 3. 5. A design support apparatus used for designing a recycled product in which various recyclable parts are assembled, wherein a method of assembling the various parts used in designing the recycled product into a product body is provided. For each component type classified for the same component, a unit disassembly time storage means for storing a unit disassembly time per component required to remove the component from the product body, and a design using the design support device. The number of parts to be assembled into the recycled product is stored in the part number totaling means for totalizing each part type, the number of parts for each part type totaled by the part number totaling means, and the unit dismantling time storage means. The disassembly time for each component type is calculated from the unit disassembly time for each component type, and the disassembly time of the designed product is calculated from the sum of the disassembly times for each component type. And a disassembly time estimating means for estimating the destruction time, wherein a design result is notified to a designer by the disassembly time estimating means.