Apparatus and method for automatically correcting discharge amount

Abstract

Provided are an apparatus and method for automatically correcting a discharge amount according to an embodiment of the present invention, the apparatus comprising: a discharge unit which accommodates a coating material to be applied to a workpiece and discharges the accommodated coating material; a sensing unit which senses the remaining amount of the coating material in the discharge unit; and a control unit which determines the discharge amount of the coating material to be discharged onto the workpiece and controls the pressure of the discharge unit according to the remaining amount of the coating material, wherein the control unit includes correction data corresponding to the remaining amount of the coating material.

Description

Automatic discharge volume compensation device and automatic compensation method

[0001] The present invention relates to an automatic discharge amount correction device and an automatic correction method.

[0002] Recently, various devices for pattern printing have been designed in various fields.

[0003] In particular, various methods are utilized to implement patterns by applying coating materials to optical plates and lighting devices of vehicles, vehicle lamps, etc., and curing is performed to reduce the spread deviation of the coating materials that print the pattern.

[0004] However, if an error occurs in the amount of the applied material to be dispensed due to differences in the model or external factors during the process of dispensing the applied material, defective products are produced, which causes a problem of reduced production efficiency.

[0005] In addition, the pressure value that the cylinder must apply to discharge the coating material varies depending on the remaining amount of the coating material in the cylinder that discharges the coating material. However, since a uniform pressure is generally always applied, the discharge amount of the coating material varies, which may lead to a problem of increased defects.

[0006] In addition, since the discharged amount varies depending on the remaining amount, the cylinder itself is replaced when the remaining amount decreases below a certain level to prevent the above-mentioned defect, but this may have the problem of wasting the remaining coating material.

[0007] As described above, a method is needed to automatically compensate for the discharge amount that varies depending on the condition of the equipment and to evenly apply the coating material.

[0008] The present invention is an invention devised to solve the problems of the above-described prior art, and has as its object the application of a coating material to a workpiece evenly by automatically adjusting the pressure of a discharge unit according to the condition of the equipment.

[0009] The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned herein will be clearly understood by those skilled in the art from the description below.

[0010] In order to achieve the above-described purpose, an automatic discharge amount correction device according to an embodiment of the present invention includes a discharge unit that receives a coating material to be applied to a workpiece and discharges the received coating material, a sensing unit that senses a residual amount of the coating material in the discharge unit, and a control unit that determines a discharge amount of the coating material to be discharged to the workpiece and controls the pressure of the discharge unit according to the residual amount of the coating material, and the control unit includes correction data according to the residual amount of the coating material.

[0011] Here, the above correction data may be the discharge amount corresponding to the remaining amount of the applied material and the pressure of the discharge unit corresponding to the discharge amount.

[0012] In addition, the control unit can check the remaining amount of the applied material through the sensing unit, and control the pressure of the discharge unit based on the discharge amount of the correction data according to the remaining amount of the applied material.

[0013] In addition, the sensing unit includes a camera unit that senses the area of ​​the workpiece, and the camera unit can sense the area of ​​the workpiece in a direction in which the discharge unit views the workpiece.

[0014] In addition, the control unit can check the area of ​​the workpiece sensed by the camera unit and calculate the work area where the coating material is applied based on the area of ​​the workpiece.

[0015] Additionally, the working area calculated by the control unit may be 1% to 5% of the area of ​​the workpiece.

[0016] At this time, the control unit can determine the amount of the applied material to be discharged based on the work area, and control the pressure of the discharge unit based on the remaining amount of the applied material and the correction data.

[0017] Meanwhile, a method for automatically correcting a discharge amount according to an embodiment of the present invention for achieving the above-described purpose includes a basic step of defining a discharge amount of a coating material and generating correction data for the pressure of a discharge unit according to the discharge amount of the coating material based on the residual amount of the coating material, a judgment step of sensing an area of ​​a workpiece to calculate a work area and determining the discharge amount of the coating material based on the work area, a confirmation step of confirming the pressure of the discharge unit corresponding to the discharge amount of the coating material calculated through the judgment step, and a work step of controlling the pressure of the discharge unit according to the correction data confirmed in the confirmation step to discharge the coating material.

[0018] Here, the basic step may include a first process of defining the amount of the applied material discharged, a second process of accumulating and storing the pressure of the discharge unit corresponding to the amount of the applied material discharged according to the remaining amount of the applied material, and a third process of generating the correction data by classifying the information accumulated through the second process according to the remaining amount of the applied material.

[0019] In addition, the second process generates the correction data for each 5% unit of the remaining amount of the applied material, and each correction data according to the remaining amount of the applied material can store the pressure of the discharge unit corresponding to the amount of the applied material discharged.

[0020] In addition, the judgment step includes a preparation process of sensing the area of ​​the workpiece and calculating the work area corresponding to the area of ​​the workpiece, and the work area calculated through the preparation process may be 1% to 5% of the area of ​​the workpiece.

[0021] In addition, the above verification step may include a first verification process of verifying the remaining amount of the applied material and a second verification process of verifying the pressure of the discharge unit corresponding to the amount of the applied material discharged from the correction data corresponding to the remaining amount of the applied material.

[0022] The automatic discharge amount compensation device and automatic compensation method according to an embodiment of the present invention for solving the above problem can have the effect of automatically adjusting the pressure of the discharge unit according to the condition of the equipment to evenly apply the coating material to the workpiece.

[0023] The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

[0024] In addition, the effects of the present invention may be described in more detail in the detailed description of the present invention, and may not necessarily be limited to what is presented above.

[0025] The summary set forth above, as well as the detailed description of preferred embodiments of the present application described below, will be better understood when read in conjunction with the accompanying drawings.

[0026] For the purpose of illustrating the present invention, preferred embodiments are shown in the drawings.

[0027] However, it should be understood that the present application is not limited to the precise arrangements and means illustrated.

[0028] FIG. 1 is a drawing illustrating the overall flow of an automatic discharge amount correction device and automatic correction method according to one embodiment of the present invention;

[0029] FIG. 2 is a drawing illustrating a process of determining a discharge amount of an automatic discharge amount correction device and automatic discharge amount correction method according to one embodiment of the present invention;

[0030] FIG. 3 is a drawing illustrating a control process of a control unit of an automatic discharge amount correction device and automatic correction method according to one embodiment of the present invention;

[0031] FIG. 4 is a drawing showing an example of correction data of an automatic discharge amount correction device and automatic correction method according to one embodiment of the present invention;

[0032] FIG. 5 is a drawing illustrating the basic steps and judgment steps of an automatic discharge amount correction device and automatic correction method according to one embodiment of the present invention;

[0033] FIG. 6 is a drawing illustrating a judgment step, a confirmation step, and a work step of an automatic discharge amount correction device and an automatic correction method according to one embodiment of the present invention;

[0034] FIG. 7 is a drawing illustrating a preparation process of an automatic discharge amount correction device and an automatic correction method according to one embodiment of the present invention; and

[0035] FIG. 8 is a drawing illustrating the operation steps of an automatic discharge amount correction device and automatic correction method according to one embodiment of the present invention.

[0036] The present invention is susceptible to various modifications and embodiments, and specific embodiments are illustrated and described in detail in the drawings. However, this is not intended to limit the present invention to specific embodiments, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention. In describing the present invention, detailed descriptions of related known technologies will be omitted if they are deemed to obscure the gist of the present invention.

[0037] Terms such as first, second, etc. may be used to describe various components, but these components should not be limited by these terms. These terms are used solely to distinguish one component from another.

[0038] The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprises" or "has" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0039] Additionally, throughout the specification, when we say "connected," this does not only mean that two or more components are directly connected, but also that two or more components are indirectly connected through other components, that they are electrically connected as well as physically connected, or that they are referred to by different names depending on location or function but are one.

[0040] Additionally, when described as being formed or arranged "above or below" each component, "above" or "below" includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or arranged between the two components. Furthermore, when expressed as "above" or "below," it can include the meaning of a downward direction as well as an upward direction based on one component.

[0041] Hereinafter, preferred embodiments of the present invention, in which the purpose of the present invention can be specifically realized, will be described with reference to the attached drawings.

[0042] First, to explain the automatic discharge amount correction device and correction method according to the present embodiment, reference may be made to FIGS. 1 to 8.

[0043] Specifically, FIG. 1 is a diagram illustrating the overall flow of an automatic discharge amount correction device and an automatic correction method according to an embodiment of the present invention, FIG. 2 is a diagram illustrating a process of determining a discharge amount of an automatic discharge amount correction device and an automatic correction method according to an embodiment of the present invention, FIG. 3 is a diagram illustrating a control process of a control unit of an automatic discharge amount correction device and an automatic correction method according to an embodiment of the present invention, FIG. 4 is a diagram illustrating an example of correction data of an automatic discharge amount correction device and an automatic correction method according to an embodiment of the present invention, FIG. 5 is a diagram illustrating a basic step and a judgment step of an automatic discharge amount correction device and an automatic correction method according to an embodiment of the present invention, FIG. 6 is a diagram illustrating a judgment step, a confirmation step, and a work step of an automatic discharge amount correction device and an automatic correction method according to an embodiment of the present invention, FIG. 7 is a diagram illustrating a preparation process of an automatic discharge amount correction device and an automatic correction method according to an embodiment of the present invention, and FIG. 8 is a diagram illustrating a process of an automatic discharge amount correction device and an automatic correction method according to an embodiment of the present invention. This is a drawing illustrating the working steps of the automatic discharge amount compensation device and automatic compensation method.

[0044] First, the device according to an embodiment of the present invention includes a discharging unit (100) that receives a coating material (E) to be applied to a workpiece (O) and discharges the received coating material (E), a sensing unit (200) that senses the remaining amount of the coating material (E) in the discharging unit (100), and a control unit (300) that determines the amount of the coating material (E) to be discharged to the workpiece (O) and controls the pressure of the discharging unit (100) according to the remaining amount of the coating material (E).

[0045] Here, the coating material (E) may be, but is not necessarily limited to, epoxy or ink for coating on the workpiece (O).

[0046] First, the discharge unit (100) is placed on the upper part of the stage where the workpiece (O) is placed, and is moved by the control unit (300) along the work area (A) described later, and a space for receiving the coating material (E) may be formed inside.

[0047] In addition, the sensing unit (200) senses the remaining amount of the coating material (E) of the discharge unit (100) as described above, transmits information about the sensed remaining amount to the control unit (300), and the control unit (300) can control the discharge unit (100) based on the transmitted remaining amount of the coating material (E).

[0048] Specifically, the control unit (300) includes correction data (D) according to the remaining amount of the applied material (E), and the correction data (D) may be the discharge amount of the applied material (E) corresponding to the remaining amount of the applied material (E) and the pressure value of the discharge unit (100) corresponding to the discharge amount.

[0049] More specifically, the pressure value that the discharge unit (100) must apply to discharge the applied material (E) varies depending on the amount of the applied material (E) contained inside the discharge unit (100). This may be because the volume of the empty space increases depending on the remaining amount of the applied material (E), causing the pressure value required for the exact discharge amount to vary.

[0050] Accordingly, the control unit (300) can check the remaining amount of the coating material (E) remaining in the discharge unit (100) through the sensing unit (200), and control the discharge unit (100) based on the correction data (D) according to the confirmed remaining amount of the coating material (E).

[0051] Here, the correction data (D) may be the discharge amount of the applied material (E) according to the remaining amount of the applied material (E) as described above and the pressure value of the discharge unit (100) corresponding to the discharge amount.

[0052] For example, when the remaining amount of the applied material (E) is 90%, the control unit (300) stores the value of the discharge amount of the applied material (E) discharged according to the pressure value in the correction data (D) corresponding to the remaining amount of 90%, and when the discharge amount of the applied material (E) is defined, the control unit (300) can control the discharge unit (100) based on the pressure value confirmed by checking the pressure value corresponding to the discharge amount of the applied material (E) on the correction data (D) corresponding to the remaining amount of the applied material (E).

[0053] Referring to the drawing, the above-described matter is explained as shown in FIG. 1, the sensing unit (200) senses the remaining amount of the coating material (E) and transmits information about the remaining amount to the control unit (300), and the control unit (300) checks the pressure value according to the discharge amount based on the remaining amount from the correction data (D) corresponding to the remaining amount and controls the discharge unit (100) according to the checked pressure value.

[0054] In addition, referring to FIG. 2, as shown in FIG. 2, the sensing unit (200) includes a camera unit (210), and in order to define the discharge amount, the camera unit (210) senses the area of ​​the workpiece (O), transmits the sensed area of ​​the workpiece (O) to the control unit (300), and the control unit (300) can calculate the work area (A) corresponding to the area of ​​the sensed workpiece (O).

[0055] Specifically, the amount of the application material (E) to be applied can be defined to an area corresponding to 1% to 5% of the area of ​​the sensed workpiece (O), more preferably, the amount of the application material (E) to be applied can be defined to an area corresponding to 2.5% to 3.5%, and more preferably, the amount of the application material (E) to be applied can be defined to an area corresponding to 3%.

[0056] Here, the control unit (300) may further include preset data in which the discharge amount corresponding to the work area (A) is stored, and may define the discharge amount of the application material (E) corresponding to the value of the work area (A).

[0057] In addition, the meaning of the discharge amount of the above-described coating material (E) may refer to the amount of the coating material (E) discharged itself, but may also refer to the weight of the discharged coating material (E), or may correspond to the volume of the discharged coating material (E), and preferably may correspond to the weight of the coating material (E).

[0058] However, since the discharged amount and weight are generally proportional to the density of the applied material (E), the discharged amount and weight may have the same meaning, and although not necessarily limited to this, it may be desirable for the discharged amount and weight to be interpreted as having the same meaning.

[0059] Meanwhile, as illustrated in FIG. 3, the control unit (300) calculates the discharge amount corresponding to the work area (A) based on preset data, receives the remaining amount of the application material (E) from the sensing unit (200), and checks the pressure value of the discharge unit (100) from the correction data (D) corresponding to the received remaining amount of the application material (E) to control the discharge unit (100) according to the checked pressure value.

[0060] Referring to FIG. 4 to explain the above-described correction data (D) in more detail, the correction data (D) may be recorded as coordinates where the discharge amount of the applied material (E) corresponding to the pressure value is stored, and the slope of the discharge amount of the applied material (E) that changes according to the pressure value may correspond to the remaining amount of the applied material (E), and this may be because the pressure value based on the discharge amount varies according to the remaining amount.

[0061] That is, to summarize and explain the above, the control unit (300) generates the remaining amount of the applied material (E) for the correction data (D) in preset units, preferably generates the correction data (D) in units of 5% of the remaining amount of the applied material (E), and can generate the correction data (D) for the pressure value corresponding to the discharge amount of the applied material (E) corresponding to the remaining amount of the applied material (E).

[0062] In addition, as described above, the remaining amount of the applied material (E) is sensed in 5% units, but more preferably, it may be desirable to generate correction data (D) in 1% units, and by sensing a pressure value more accurate than the correction data (D) in 5% units described above, the error in the weight of the discharged applied material (E) can be effectively reduced.

[0063] However, even if 5% or 1% units are created as described above, there may be cases where it is not judged as within the relevant range. For example, if the remaining amount of the applied substance (E) is 86%, in the case of correction data (D) saved in units of 5%, the correction data (D) corresponding to the remaining amount of the adjacent applied substance (E) is correction data (D) corresponding to 85%, and there is a concern that the correction data (D) corresponding to 90% may have some error.

[0064] In addition, when the remaining amount of the applied material (E) is 88%, it may correspond to 85%, but it may also correspond to 90%, so it may be more desirable to store the correction data (D) in 1% units as described above.

[0065] However, in order to solve the above-described problem, the control unit (300) may include an overlapping area within a preset range for the remaining amount of the coating material (E).

[0066] For example, in the case of 88% of the remaining amount as described above, since it is unclear which of the respective correction data (D) corresponding to 85% and 90% of the remaining amount of the applied material (E) should be selected, the correction data (D) corresponding to 85% of the remaining amount of the applied material (E) and the correction data (D) corresponding to 90% of the remaining amount of the applied material (E) may include an overlapping area corresponding to 87.5% to 88.5%, and the control unit (300) may utilize the average value of the pressure value extracted from the adjacent correction data (D), the correction data (D) corresponding to 85% as a result, and the correction data (D) corresponding to 90%, in the case of the overlapping area described above.

[0067] That is, in the case where it does not correspond to the overlapping area described above, the pressure value is confirmed through the correction data (D) corresponding to the residual amount of the coating material (E) having a closer value, but in the case where it corresponds to the overlapping area, the above-described problem can be solved by utilizing the average of the pressure values ​​in different correction data (D) having the overlapping area for the corresponding area.

[0068] However, this is only one example according to an embodiment of the present invention to minimize errors in pressure value confirmation, and may not necessarily be limited to the above-described examples.

[0069] Meanwhile, to summarize and explain the above, as shown in Fig. 5, a basic step (S10) can be performed to define the discharge amount of the applied material (E) and generate correction data (D) for the pressure of the discharge unit (100) according to the discharge amount of the applied material (E) based on the remaining amount of the applied material (E).

[0070] Here, the basic step (S10) may be a step of repeatedly recording the above-described data and generating correction data (D) as in Fig. 5 by classifying the recorded data according to the remaining amount of the coating material (E).

[0071] Specifically, the basic step (S10) may be a step of continuously storing the relationship according to the remaining amount of the applied material (E), the discharge amount of the applied material (E), and the pressure of the applied material (E), distinguishing the remaining amount of the applied material (E) based on the remaining amount of the applied material (E) in the basic step (S10) process, distinguishing correction data (D) corresponding to the remaining amount of the applied material (E), and generating the above-described correction data (D) through the data corresponding to the distinguished remaining amount of the applied material (E).

[0072] To explain this in detail, the basic step (S10) can be divided into a first process (S11) for defining the discharge amount of the applied material (E), a second process (S12) for accumulating and storing the pressure of the discharge unit (100) corresponding to the discharge amount of the applied material (E) according to the remaining amount of the applied material (E), and a third process (S13) for generating correction data (D) by classifying the information accumulated through the second process (S12) according to the discharge amount of the applied material (E).

[0073] That is, the discharge amount of the coating material (E) is defined through the first process (S11), and in the second process (S12), the discharge unit (100) discharges the coating material (E) based on the preset pressure value according to the defined discharge amount of the coating material (E), measures the weight of the discharged coating material (E), and stores information on the remaining amount of the coating material (E) and the discharge amount of the coating material (E) when the pressure is at the preset value, and in the third process (S13), information for accurately discharging the remaining amount of the coating material (E) and the discharge amount of the coating material (E) is accumulated and stored again, and correction data (D) can be generated.

[0074] As a result, the basic step (S10) may correspond to a step that is only performed for the first time in order to utilize the device according to an embodiment of the present invention, and may further include a process of continuously storing information and modifying and supplementing the above-described correction data (D) during the work process that proceeds through the judgment step (S20), confirmation step (S30), and work step (S40), and may not necessarily be limited to what has been mentioned.

[0075] Meanwhile, if the above-described correction data (D) is generated through the basic step (S10), the process proceeds to directly discharge the application material (E) onto the workpiece (O) from the judgment step (S20), and the judgment step (S20) may be a step of sensing the area of ​​the workpiece (O) to calculate the work area (A) and determining the discharge amount of the application material (E) based on the work area (A).

[0076] That is, the judgment step (S20) may be a step for defining the discharge amount of the applied material (E), and the judgment step (S20) may perform a preparatory step (S21) for sensing the area of ​​the workpiece (O) through the camera unit (210) to calculate a work area (A) corresponding to the area of ​​the workpiece (O), and may determine the discharge amount of the applied material (E) corresponding to the calculated work area (A).

[0077] Here, the judgment step (S20) may be a step that is performed through the sensing unit (200) and the control unit (300), and although the area of ​​the workpiece (O) is sensed through the camera unit (210) in the above-described content, this may mean simply photographing the workpiece (O) through the camera unit (210) or capturing the workpiece (O) through a vision camera, and the work area (A) may be 1% to 5% of the total area of ​​the photographed workpiece (O), preferably 2.5% to 3.5%, and more preferably 3%.

[0078] Meanwhile, when the discharge amount of the applied material (E) is defined through the judgment step (S20), a confirmation step is performed, and the performance step may be a process of checking the pressure of the discharge unit (100) corresponding to the discharge amount of the applied material (E) calculated through the judgment step (S20) in the control unit (300).

[0079] Here, as illustrated in FIG. 6, the confirmation step (S30) may include a first confirmation process (S31) of confirming the remaining amount of the applied material (E) and a second confirmation process (S32) of confirming the pressure of the discharge unit (100) corresponding to the discharge amount of the applied material (E) in the correction data (D) corresponding to the remaining amount of the applied material (E).

[0080] To explain this in detail, the first verification process (S31) verifies the remaining amount of the applied material (E), and when the remaining amount of the applied material (E) is confirmed through the first verification process (S31), the second verification process (S32) verifies the correction data (D) corresponding to the remaining amount of the applied material (E) through the control unit (300), and since the discharge amount of the applied material (E) is defined through the judgment step (S20), the pressure of the discharge unit (100) corresponding to the defined discharge amount of the applied material (E) can be confirmed.

[0081] As described above, after performing the judgment step (S20) and the confirmation step (S30) in the work process, the control unit (300) can perform the work step (S40) of discharging the coating material (E) by controlling the pressure of the discharge unit (100) according to the correction data (D) confirmed through the confirmation step (S30).

[0082] Here, the work area (A) of the above-described verification step (S30) will be described in more detail. As shown in FIG. 7, when the work piece (O) is placed at the bottom of the discharge unit (100), the work piece (O) is divided into different first parts (O1) and second parts (O2), and the area corresponding to the gap (G) according to the area of ​​the first part (O1) and second part (O2) may be the work area (A).

[0083] However, in general, the process of discharging the coating material (E) is mostly carried out based on the same product, and since the general size and ratio are maintained even when the error in the manufacturing process is taken into account, as described above, the gap (G) between the first part (O1) and the second part (O2) falls within the range of 1% to 5%, preferably 2.5% to 3.5%, and more preferably 3%, and if the gap (G) is outside the range, the control unit (300) can generate a notification that the first part (O1) or the second part (O2) is defective.

[0084] Here, as illustrated in FIG. 8, the first part (O1) is placed on top of the second part (O2), and a gap (G) is formed between the first part (O1) and the second part (O2) according to the difference in area between the first part (O1) and the second part (O2), and the gap (G) may be an area formed on top of the second part (O2).

[0085] In addition, as described above, the gap (G) may correspond to the work area (A), but the gap (G) and the work area (A) may have a predetermined difference. For example, as illustrated in FIG. 8, if the vertex of the first component (O1) on the upper side of the second component (O2) where the gap (G) is formed is curved and the vertex of the second component (O2) is at a right angle, the dispensing unit (100) discharges the coating material (E) along the gap (G) rather than the area of ​​the entire gap (G), and therefore the gap (G) and the work area (A) may have a predetermined difference.

[0086] However, if the shape of the gap (G) formed according to the morphological difference between the first part (O1) and the second part (O2) as described above can form a straight line or a smooth movement path of the discharge unit (100), the gap (G) and the work area (A) may correspond to the same position, and the total area of ​​the workpiece (O) confirmed by the control unit (300) through the camera unit (210) may mean the area of ​​the part having the largest area among the first part (O1) and the second part (O2) when looking at the workpiece (O) from above, or may mean the total area in the cross-section including the first part (O1) and the second part (O2), and it may be desirable that the interpretation is not necessarily limited to what has been mentioned.

[0087] Having described preferred embodiments of the invention, it will be apparent to those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or scope thereof, in addition to the embodiments described above.

[0088] Therefore, the above-described embodiments should be considered as illustrative rather than restrictive, and accordingly, the present invention is not limited to the above description but may be modified within the scope of the appended claims and their equivalents.

Claims

1. A discharge unit that receives a coating material to be applied to a workpiece and discharges the received coating material; A sensing unit that senses the remaining amount of the coating material of the above discharge unit; and It includes a control unit that determines the amount of coating material to be discharged to the workpiece and controls the pressure of the discharge unit according to the remaining amount of the coating material. The above control unit is an automatic discharge amount correction device including correction data according to the remaining amount of the applied material.

2. In paragraph 1, The above correction data is an automatic discharge amount correction device that corresponds to the discharge amount corresponding to the remaining amount of the applied material and the pressure of the discharge unit corresponding to the discharge amount.

3. In paragraph 2, The above control unit checks the remaining amount of the applied material through the above sensing unit, An automatic discharge amount correction device that controls the pressure of the discharge unit based on the discharge amount of the correction data according to the remaining amount of the applied material.

4. In paragraph 2, The above sensing unit includes a camera unit that senses the area of ​​the workpiece, The above camera unit is an automatic discharge amount correction device that senses the area of ​​the workpiece in the direction in which the workpiece is viewed from the discharge unit.

5. In paragraph 4, The above control unit checks the area of ​​the workpiece sensed by the above camera unit, An automatic discharge amount correction device that calculates the work area to which the above-mentioned coating material is applied based on the area of ​​the above-mentioned workpiece.

6. In paragraph 5, The above control unit determines the amount of the applied material to be discharged based on the above working area, An automatic discharge amount compensation device that controls the pressure of the discharge unit based on the residual amount of the above-mentioned coating material and the above-mentioned compensation data.

7. A basic step of defining the amount of applied material discharged and generating correction data for the pressure of the discharge unit according to the amount of applied material discharged based on the remaining amount of applied material; A judgment step of sensing the area of ​​a workpiece to calculate a work area and judging the amount of the applied material to be discharged based on the work area; A confirmation step for confirming the pressure of the discharge unit corresponding to the amount of the applied material discharged calculated through the judgment step; and A method for automatically correcting the discharge amount, including a step of controlling the pressure of the discharge unit to discharge the coating material according to the correction data confirmed in the above confirmation step.

8. In paragraph 7, The above basic steps are: A first process for defining the amount of the above-mentioned coating material to be discharged; A second process of accumulating and storing the pressure of the discharge unit corresponding to the discharge amount of the applied material according to the remaining amount of the applied material; and A method for automatically correcting the discharge amount, including a third process of classifying the information accumulated through the second process according to the remaining amount of the applied material and generating the correction data.

9. In paragraph 8, The second process above is, Generate the above correction data for every 5% of the remaining amount of the above coating material, Each of the above correction data according to the remaining amount of the above coating material is, An automatic discharge amount correction method that stores the pressure of the discharge unit corresponding to the discharge amount of the above-mentioned coating material.

10. In paragraph 7, The above judgment step is, It includes a preparation process for sensing the area of ​​the workpiece and calculating the work area corresponding to the area of ​​the workpiece, The above working area calculated through the above preparation process is an automatic discharge amount correction method in which 1% to 5% of the area of ​​the workpiece is produced.

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