KR20090036286A - System for operation color selection buffer and method thereof - Google Patents

Abstract

A system for operating a color selection buffer and a method thereof are provided to determine the withdrawal order by analyzing the constitutional ratio of each color of a car body loaded in the color selection buffer. Barcode scanners(BS1, BS2) are prepared at the entrance and exit of a color selection buffer installed in a painting factory, and read out the barcode attached to a car body which is inserted into and ejected from the color selection buffer. A stopper(ST) is arranged on each line of the color selection buffer to control the inserted and ejected cars. A controller(C) manages information about the car body loaded in the color selection buffer by analyzing the scanned barcode information, calculates a withdrawal group, and controls the operation of the stopper to control the withdrawal of car bodies in each line.

Description

Operating system and method of color selection buffer {SYSTEM FOR OPERATION COLOR SELECTION BUFFER AND METHOD THEREOF}

The present invention relates to a system and method for operating a color selection buffer, and more specifically, to the color selection buffer installed between the intermediate process and the top coat process in a painting factory, an emergency vehicle production and production sequence correction line and a sequence correction return line are added. The present invention relates to a vehicle pick-up system and a method of a color selection buffer which enables to produce an emergency vehicle more quickly in a state in which a production sequence is preserved and improves the drawing efficiency of each vehicle by color.

In general, in the production process of automobiles, the painting of the car body is designed to prevent corrosion of the car body and to enhance the merchandise by making the beauty of the sound with beautiful sound.It requires a high level of rust prevention and aesthetics. have.

Each process of the car body painting factory consists of a pretreatment mainly for rust prevention, an electrodeposition process and a midway process, and a top coat process mainly for aesthetics. Referring to FIG.

The pre-treatment process (S100) is produced at the car body factory, and when the car body is put into the paint shop, it completely removes dirt or oil adhering to the inner and outer plates of the car body and at the same time improves the corrosion resistance of the iron plate and adhesion to the electrodeposition paint. It is a process of forming a phosphate film.

When the vehicle body on which the pretreatment process 100 has been executed passes through the drying furnace, an electrodeposition (underground) process (S110) is performed, and the electrodeposition (underground) process (S110) is carried out while the vehicle body is electroplated in the electrodeposition paint to provide rust prevention. Of course, it is the process of painting evenly inside the vehicle body.

Subsequently, the vehicle body is subjected to a sealing process (S120) for applying a sealer to the joint portion, a midway process (S130) for providing chipping resistance, smoothness, weather resistance, and the like, and a top coat process (S140) for providing aesthetic color and gloss. The coating film is formed.

In this way, when painting is completed on the vehicle body, a visual inspection (S150) is performed to check whether there is dust, dirt, scratches, etc. on the painted surface formed on the exterior of the vehicle through visual inspection, and if correction of the result of the external inspection (S150) is necessary After repainting through the top coat process (S140) or through a modification process (S160), which is provided with a polishing operation, etc., it is input to the design factory.

The color selection buffer (C / S) is installed between the intermediate process (S130) and the top coat process (S140) of each process of the painting factory.

The color selection buffer (C / S) is a loading place that waits before putting the finished car body into the top booth, and minimizes the loss of paint caused by the cleaning operation for changing the color of the automatic coating machine in the top booth. It is used for grouping by color.

The vehicle body loaded after the intermediate coating is completed in the color selection buffer C / S is drawn out for each color by manual selection of the operator and is introduced into the top coat process S140.

Therefore, according to the condition of the worker and the work ability, the color variation rate that is put into the top coat process (S140) is greatly generated, and changes in the production environment of the paint shop and the top coat booth are not properly reflected, and thus, grouping by color is not performed under the optimum conditions. It is not.

That is, it is difficult to reflect the information of the vehicle in real time because the introduction and withdrawal of the vehicle body depends on the operator's experience, and thus the grouping withdrawal efficiency for each color is inferior.

In addition, suitable operating methods are not suggested for vehicles that require urgent production, and in case of increasing the withdrawal efficiency from the color selection buffer (C / S), the production sequence may be disturbed to effectively cope with various production methods such as order production. There are no drawbacks.

In addition, when the method of selecting and withdrawing a group with a small withdrawal efficiency value for each withdrawal group is applied, a problem arises in that the withdrawal efficiency is lowered because the car body that is drawn out is not considered.

The present invention has been invented to solve the above problems, the object of which is to analyze the composition ratio of each color of the vehicle body loaded in the color selection buffer to determine the withdrawal order in real time to increase the withdrawal efficiency.

In addition, another object of the present invention is to install and operate the emergency vehicle production and production sequence correction line and the sequence correction return line in the color selection buffer to enable faster production of the emergency vehicle in the production sequence is preserved. In other words, for the group with the lowest withdrawal efficiency among the withdrawal groups, the withdrawal efficiency of the body by color can be improved by retrieving the withdrawal group only after retrieving the first one.

The operating system of the color selection buffer according to the characteristics of the present invention for realizing the above object is configured on the inlet side and the outlet side of the color selection buffer installed in the painting factory, attached to the vehicle body to be drawn in and out of the color selection buffer A barcode scanner for reading barcodes; A stopper disposed on each line of the color selection buffer to control an incoming and an outgoing vehicle body; A controller for managing information of the vehicle body loaded in the color selection buffer by analyzing the barcode scanner information, calculating a drawing group, and controlling the drawing of the vehicle body by line by controlling the operation of the stopper;

The color selection buffer further includes an emergency vehicle production and production sequence correction line (CL) loaded with a vehicle body for correcting the disorganized production sequence and the vehicle body for emergency production,

When the controller detects the inflow of the vehicle body having a faster number than the managed sequence number, the controller enters the emergency vehicle production and production sequence correction line, and controls an exit stopper to give priority to the vehicle loaded on the emergency vehicle production and production sequence correction line. Withdraw by.

In addition, a method of operating a color selection buffer according to a feature of the present invention comprises the steps of: (a) managing the color, storage location and sequence number of the vehicle body loaded in the color selection buffer using information of a bar code attached to one side of the vehicle body;

(b) If the result of reading the vehicle body information into the color selection buffer indicates that the vehicle is required to be urgently produced or that the vehicle body has a sequence number earlier than the managed sequence number, the vehicle body is introduced into the emergency vehicle production and production sequence correction line. Making process;

(c) if the vehicle body loaded in the emergency vehicle production and production sequence correction line exists, controlling the stopper of the corresponding line to first withdraw;

(d) comparing the sequence number of the exit car body with the sequence number of the last car body of each line if there is no car body loaded in the emergency vehicle production and production sequence correction line;

(e) if the comparison result of step (d) is negative, controlling the stopper of the line having the smallest value among the comparison values and performing drawing out of the vehicle body;

(f) calculating a withdrawal group for each stage of the vehicle body loaded on each line of the color selection buffer if the comparison result of step (d) is positive, and calculating and storing the withdrawal efficiency value for each group;

(g) retrieving the withdrawal group after retrieving only the vehicle body of the earliest for the group with the lowest withdrawal efficiency value calculated in (f).

According to the above-described configuration, the present invention is expected to have an effect of improving the drawing efficiency of each color and the efficiency of the line management of the paint shop by analyzing the composition ratio for each color of the vehicle body loaded in the color selection buffer and determining the drawing order in real time. do.

In addition, it is possible to quickly produce an emergency vehicle in a state where the production sequence is preserved, so that it is possible to cope with the order production method and the timely production method, thereby improving customer satisfaction and improving the withdrawal efficiency of the vehicle body in the color selection buffer.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

1 is a configuration diagram schematically showing an operating system of a color selection buffer according to an embodiment of the present invention.

As shown, the operating system of the color selection buffer according to the embodiment of the present invention, the inlet side of the color selection buffer (C / S) configured between the intermediate process (M) and the top coat process (U) of the painting factory Bar coder scanners BS1 and BS2 are configured at each of I and exit sides O, and are attached to one side of the vehicle body to read a bar coder containing vehicle information and provide the signal to the controller C.

The color selection buffer (C / S) is an emergency vehicle production and production sequence correction line (CL) loaded with a vehicle for correcting a disorganized production sequence and a vehicle body for emergency production, and withdrawing the vehicle body loaded according to a production sequence. It consists of one or more conventional lines (L1-L3) which provide.

On each line of the color selection butter C / S, a stopper ST is provided to intercept the withdrawal of the vehicle body. The stopper ST is operated according to the control signal of the controller C to execute the withdrawal of the vehicle body. do.

In addition, a stopper ST is provided at the inlet side of the color selection butter, which is operated according to the control signal of the controller C to adjust the amount of the vehicle body loaded on each line of the color selection buffer C / S.

A sequence correction return line (RL) for connecting the outlet side (O) and the inlet side (I) of the color selection buffer (C / S) and returning the vehicle body to be drawn so as to correct the extraction sequence so that the extraction sequence follows the production sequence. This is installed.

The controller C controls the loading and withdrawing of the vehicle by controlling the operation of the stopper ST on each line by using the vehicle information received from the bar coder scanners BS1 and BS2 installed at the inlet and outlet sides.

In addition, the controller C loads the emergency vehicle production and production sequence correction line CL when the vehicle body required for emergency production is introduced, and controls the stopper ST of the corresponding line to produce the emergency vehicle production and production sequence correction line. The car body loaded in CL is given out first.

The controller C forms a drawing group in order to improve the drawing efficiency in the color selection buffer C / S, and when the drawing of the front body is performed for the drawing group having the lowest drawing efficiency among the drawing groups. Reset the new withdrawal group.

This is to prevent the withdrawal efficiency from decreasing when the withdrawal efficiency value of each withdrawal group is small and the withdrawal efficiency is not taken into consideration when selecting and withdrawing the withdrawal group having a small withdrawal efficiency value.

Referring to Figure 2 with respect to the vehicle body withdrawal and operation in the operating system of the color selection buffer according to an embodiment of the present invention having such a configuration as follows.

First, the controller C selects a color by receiving barcode information of a vehicle body that is inserted into the color selection buffer C / S after the intermediate process M is completed from the bar code scanner BS1 installed at the entrance I. The color (color) and position information of each vehicle body loaded in the buffer C / S are managed and stored (S11).

For example, as shown in FIG. 1, the first column 11 of the first line L1 and the first and second columns of the second line L2 in the color selection buffer C / S. The body located at 21 and 22 is red, and the body located at the third and fourth columns 23 and 24 of the second line L2 is blue and the body is located in the fifth column 25 of the second line L2. The body is green, the body located in the first row 31 of the third line L3 is purple, the body located in the second row 32 of the third line L3 is yellow, and the color selection buffer C /. S) is managed and stored as color information of the vehicle body loaded at a specific location.

At this time, the controller C is faster than the earliest sequence number in the color selection buffer C / S in which the sequence number of the vehicle body currently being inserted among the information received from the barcode scanner BS1 on the entrance side I is managed. Determine if you have a number.

If the sequence number of the incoming vehicle body has a faster number than the earliest number of the managed sequence number, it is determined to be a vehicle for emergency production or a vehicle for correction of production sequence and controlled by the stopper ST. The emergency vehicle production and production sequence correction line (CL) for the vehicle to be introduced (S12).

According to the above procedure, the controller C exits the bar code scanner BS2 installed on the exit side O in the process of loading the vehicle body having completed the intermediate process on each line in the color selection buffer C / S. The color (color) information of the vehicle body side O is received to detect the color of the vehicle body currently located at the exit side O (S13).

For example, FIG. 1 illustrates a case in which the color (color) information of the vehicle body located at the exit side O of the color selection buffer C / S is red.

In addition, the controller C analyzes the information managed by the controller C to check whether the vehicle body is loaded in the emergency vehicle production and production sequence correction line CL (S14).

If it is confirmed in S14 that the vehicle body is loaded in the emergency vehicle production and production sequence correction line CL, the stopper ST installed in the line is controlled to first take out the loaded body and then enter the top coat process U. (S15).

However, if the vehicle body is not loaded in the emergency vehicle production and production sequence correction line CL in S14, the sequence number of the exit body O and the sequence number of the last vehicle body of each line L1 to L3 are negative. It is determined whether to have a value of (S16).

When the comparison result of S16 has a negative value, the stopper ST of the line on which the vehicle body of the sequence number having the smallest value is loaded is controlled so that the vehicle body can be withdrawn from the corresponding line.

However, if the comparison result of S16 has a positive value, the controller C calculates the withdrawal group of each phase-drawable vehicle body for each vehicle body loaded on each line of the color selection buffer C / S (S18). ).

For example, as shown in FIGS. 3 and 4, when the color selection buffer C / S has a third column of the third line, the method of calculating the withdrawal group may include a first withdrawal group ( G1) may be divided into car bodies located in the first, second and third columns 11, 12 and 13 of the first line, and the second withdrawal group G2 may be divided into the first and second columns 11 and 12 of the first line. ) And the car body located in the first row 21 of the second line, and in this way, the 27th drawing group G27 is connected to the first, second, third row (31, 32, 33) of the third line. It can be divided into located car bodies.

This can create a drawing group by the number of lines multiplied by the total number of lines of the color selection buffer C / S.

In this way, when the withdrawal group of each phase-drawable vehicle is calculated for each vehicle body in the color selection buffer C / S, the controller C determines the color of the vehicle body (O) of the exit side O of the color selection buffer C / S. Color) is calculated and stored according to the set calculation formula for each withdrawal group (S19).

The withdrawal efficiency value is compared with each other in the color of the car body of each withdrawal group by adding "1" at the time of color change, "0" if the color is the same, and apply "infinity" when the vehicle is empty. The sub-step is a condition not to be calculated, and is made up of the sum of the added values, and the formula is shown in Equation (1).

Draw-out efficiency value = value LEFT (step 0; step 1) + value LEFT (step 1; step 2) + CDOT CDOT CDOT CDOT CDOT + value LEFT (step (N-1); step N)

That is, step 0 refers to the color of the vehicle on the exit side (O) of the color selection buffer (C / S), step 1 refers to the color of the first drawing object of the corresponding drawing group, and step 2 refers to the color of the drawing group. The color of the first drawing object body.

The smaller the withdrawal efficiency value of the corresponding withdrawal group calculated by Equation 1, the smaller the number of color changes, which is a major factor in the withdrawal order determination.

5 and 6, first, as shown in FIG. 5, the first column 11 of the first line and the first line of the second line in the color selection buffer C / S. The car body located in the second row (21, 22) is red, the car body located in the third, fourth row (23, 24) of the second line is blue, the car body located in the fifth column (25) of the second line is Green, the body located in the first row 31 of the third line is purple, the body located in the second row 32 of the third line is yellow, etc., the body located at a specific position in the color selection buffer (C / S) With respect to the color information that the color of the exit body (O) of the color selection buffer (C / S) when the color of the red drawing efficiency value for each group, the calculation process of the drawable vehicle body of step 5 through FIG. Two groups having will be described.

That is, in the case of group A (G_A), the value added in the color comparison of step 0 and step 1 is "0", the value added in the color comparison of step 1 and step 2 is "0", and the step 2 and step The value added in the color comparison of 3 is "0", the value added in the color comparison of steps 3 and 4 is "1", and the value added in the color comparison of steps 4 and 5 is "0", The total withdrawal efficiency value is represented by "1".

On the other hand, in the case of group B (G_B), the value added in the color comparison of step 0 and step 1 is "0", and the value added in the color comparison of step 1 and step 2 is "0", and the step 2 and step The value added in the color comparison of 3 is "0", the value added in the color comparison of steps 3 and 4 is "1", and the value added in the color comparison of steps 4 and 5 is "1". , The draw-out efficiency value, which is the sum total, is represented by "2".

As described above, when the withdrawal efficiency value is calculated for every withdrawal group, the controller C determines to withdraw only the vehicle body that is the earliest in the withdrawal group having the lowest withdrawal efficiency value (S20).

This is to exclude the fact that the withdrawal efficiency is lowered when the withdrawal group having a small withdrawal efficiency value is selected for each withdrawal group and the withdrawal efficiency is not taken into consideration.

Thereafter, by controlling the operation of the stopper ST for each line in the color selection buffer C / S according to the determined drawing order, an optimum withdrawal is provided for the vehicle body loaded in the color selection buffer ST (S21). .

As described above, the controller C controls the operation of the stopper ST for each line to read the vehicle body loaded in the color selection buffer C / S, and is read by the exit side barcode scanner BS2. It is determined whether the sequence number of the vehicle body has a value later than the sequence number of the last incoming vehicle body.

In this case, if the state does not have a late value, the normal withdrawal is continuously maintained according to the determined withdrawal order, and if it is determined to have a late value, the corresponding body to be withdrawn is a newly introduced vehicle that is not determined as the withdrawal group, and thus the sequence correction return line Returning to the inlet side I of the color selection buffer C / S via RL (S22).

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1 is a configuration diagram schematically showing an operating system of a color selection buffer according to an embodiment of the present invention.

2 is a flowchart illustrating an operating procedure of a color selection buffer according to an embodiment of the present invention.

3 and 4 are diagrams illustrating a group determination and thus group determination principle of a pullable vehicle body in operation of a color selection buffer according to an embodiment of the present invention.

5 and 6 are views of the color status in the color selection buffer and the drawing according to the same to explain the principle of calculating the withdrawal efficiency value for each group of drawable bodies in the operation of the color selection buffer according to an embodiment of the present invention and the drawing order determination method. Efficiency value calculation table.

7 is a process chart of a general paint shop.

 <Explanation of symbols for the main parts of the drawings>

C: Controller ST: Stopper

CL: Emergency vehicle production and production sequence correction line BS: Barcode scanner

Claims (7)

A barcode scanner configured at an inlet side and an outlet side of a color selection buffer installed at a painting factory, for reading a barcode attached to a vehicle body that is inserted into and drawn out of the color selection buffer; A stopper disposed on each line of the color selection buffer to control incoming and outgoing vehicles; A controller for managing information of the vehicle body loaded in the color selection buffer by analyzing the barcode scanner information, calculating a drawing group, and controlling the drawing of the vehicle body by line by controlling the operation of the stopper; The color selection buffer further includes an emergency vehicle production and production sequence correction line (CL) loaded with a vehicle body for correcting the disorganized production sequence and the vehicle body for emergency production, When the controller detects the inflow of the vehicle body having a faster number than the managed sequence number, the controller enters the emergency vehicle production and production sequence correction line, and controls an exit stopper to give priority to the vehicle loaded on the emergency vehicle production and production sequence correction line. Color selection buffer operating system to draw out. The method of claim 1, The color selection buffer further comprises a sequence correction transmission line (RL) for connecting the exit side (O) and the inlet side (I) and returning the vehicle body to be drawn so as to correct the extraction sequence so that the extraction sequence follows the production sequence. Color selection buffer operating system. The method of claim 1, The controller calculates the withdrawal group of the vehicle body loaded in the color selection buffer C / S and resets the withdrawal group when withdrawal is performed for the front body of the withdrawal group having the lowest efficiency among the calculated withdrawal groups. Select buffer operating system. The method of claim 1, And the controller returns the withdrawal body to the entrance through the sequence correction return line when the sequence number of the withdrawal body is later than the sequence number of the last withdrawn body during the withdrawal of the car body for each withdrawal group calculated. In the operation method of the color selection buffer, (a) managing the color, storage location, and sequence number of the vehicle body loaded in the color selection buffer using information of a barcode attached to one side of the vehicle body; (b) introducing the vehicle body into the emergency vehicle production and production sequence correction line if there is an entry of the vehicle body having a sequence number earlier than the emergency sequence body or the managed sequence number as a result of reading the vehicle body information introduced into the color selection buffer; (c) if the vehicle body loaded in the emergency vehicle production and production sequence correction line exists, controlling the stopper of the corresponding line to first withdraw; (d) comparing the sequence number of the exit body with the sequence number of the last body of each line if there is no body loaded in the emergency vehicle production and production sequence correction line; (e) if the comparison result of step (d) is negative, controlling the stopper of the line having the smallest value among the comparison values and performing drawing out of the vehicle body; (f) calculating a withdrawal group for each stage of the vehicle body loaded on each line of the color selection buffer if the comparison result of step (d) is positive, and calculating and storing the withdrawal efficiency value for each group; (g) a method of operating a color selection buffer comprising retrieving only the vehicle body of the earliest for the group having the lowest withdrawal efficiency value calculated in (f) and then resetting the withdrawal group. The method of claim 5, If the sequence number of the vehicle body being drawn out is later than the sequence number of the vehicle body which was last drawn in the process of performing the vehicle withdrawal according to the withdrawal efficiency value for each group calculated in the above (f), the color selection buffer after the withdrawal group is set The method of operating the color selection buffer further comprising the step of returning to the inlet side through the sequence correction return line determined by the vehicle body inserted into. The method of claim 5, The drawing efficiency value is calculated by comparing the colors of the respective drawing group bodies and adding 1 when changing colors, adding 0 when the same color is applied, applying infinity when the vehicle is empty, and calculating the lower level. Operation method of color selection buffer that calculates by adding up each addition value with condition that does not apply.

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