JP2017225923A - Coating device, control method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating device capable of suitably reducing a change in an amount of coating caused by a change in viscosity of a coating liquid.SOLUTION: A dispenser device 100 mainly includes a container 2 to which a coating liquid 6 is injected, a coating needle 3, an input section 8, a drive section 9, and a control section 11. The control section 11 acquires information on a variation range of viscosity of the coating liquid 6 based on input into the input section 8. The control section 11 controls a stand-by time in a period during which the time is shifted by the drive section 9 from an immerse state in which the coating liquid 6 is stuck to a tip portion 13 of the coating needle 3 to a contact state in which the stuck coating liquid 6 is applied to an object 7. At this time, the control section 11 changes the stand-by time so as to correspond to the variation range of the viscosity of the coating liquid 6.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a coating apparatus capable of adjusting a coating amount.

  2. Description of the Related Art Conventionally, there is known a needle type dispenser that applies a coating liquid to a tip of a coating needle and applies it to an object. For example, Patent Document 1 includes a coating solution container having a through-hole formed therein and a coating needle penetrating the through-hole. An application unit for applying an application liquid adhering to the substrate to a fine pattern on a substrate is disclosed. Non-Patent Document 1 discloses that the amount of application applied to an object by an application needle depends on a waiting time until the application needle is brought into contact with the object.

JP 2009-206061 A

Masahiro Saruta, Tetsuji Mozaka, “Flat Panel Display Modification Technology”, NTN TECHNIC REVIEW No. 67, p. 75

  The application amount applied to the object by the application needle also depends on the viscosity of the application liquid, and the viscosity of the application liquid stored in the container changes due to the standing time, the ambient temperature, and the like. Therefore, when the viscosity of the coating solution changes, the coating amount applied by the coating needle changes, and the actual coating amount may gradually shift from the target coating amount. Such a problem is not disclosed in Patent Document 1 at all.

  The present invention has been made to solve the above-described problems, and mainly provides a coating apparatus capable of suitably reducing a change in coating amount due to a change in viscosity of a coating solution. With a purpose.

  The invention described in claim is a coating apparatus, the acquisition unit acquiring information related to the variation range of the viscosity of the coating liquid, and the first application state in which the coating liquid is adhered to the tip of the coating needle. A control unit that controls a standby time during the transition to the second state in which the liquid is applied to the object, and the control unit changes the standby time in accordance with a variation range of the viscosity of the coating liquid. It is characterized by making it.

  In the invention described in claim, the drive unit moves the application needle between a first position where the application liquid is applied to the tip of the application needle and a second position where the applied application liquid is applied to an object. A control method executed by a coating apparatus comprising: an acquisition step of acquiring information related to a variation range of the viscosity of the coating liquid, and a time during which the position of the coating needle moves from the first position to the second position And a control step of changing the waiting time in accordance with the fluctuation range of the viscosity of the coating liquid.

  In the invention described in claim, the drive unit moves the application needle between a first position where the application liquid is applied to the tip of the application needle and a second position where the applied application liquid is applied to an object. A program executed by a computer for controlling the acquisition liquid, the acquisition unit for acquiring information related to the variation range of the viscosity of the coating liquid, and the position of the coating needle during the transition from the first position to the second position The computer is caused to function as a control unit that changes the waiting time in accordance with a variation range of the viscosity of the coating liquid.

It is the schematic of a dispenser apparatus. (A) It is a figure which shows the state which protruded the front-end | tip part of the applicator needle from the container. (B) It is a figure which shows the state which made the front-end | tip part contact the target object. (A) The tip portion immediately after the tip portion of the application needle protrudes from the container and the coating liquid adhering to the tip portion are shown. (B) The tip after the tip of the application needle protrudes from the container and the coating liquid adhering to the tip after a predetermined time has been shown. It is a flowchart which shows the outline | summary of a coating amount adjustment process. The relationship between the waiting time for each viscosity and the coating amount is shown. It is the table produced | generated based on actual measurement data.

  According to a preferred embodiment of the present invention, the applicator is attached from the acquisition unit that acquires information related to the fluctuation range of the viscosity of the application liquid, and the first state in which the application liquid is attached to the tip of the application needle. A control unit that controls a standby time during the transition to the second state in which the coating liquid is applied to the object, and the control unit sets the standby time corresponding to a variation range of the viscosity of the coating liquid. Change.

  The coating apparatus includes an acquisition unit and a control unit. An acquisition part acquires the information regarding the fluctuation range of the viscosity of a coating liquid. The control unit controls a waiting time during the transition from the first state in which the application liquid is attached to the tip of the application needle to the second state in which the applied application liquid is applied to the object. At this time, the control unit changes the waiting time in accordance with the fluctuation range of the viscosity of the coating liquid. The coating amount depends on the waiting time during the transition from the first state to the second state and the viscosity of the coating solution. Further, the degree of variation in the coating amount due to the variation in the viscosity of the coating solution varies depending on the standby time. In consideration of the above, the coating apparatus changes the waiting time corresponding to the variation range of the viscosity of the coating solution, thereby reducing the variation in the coating amount due to the variation in the viscosity of the coating solution, and suitably applying the coating amount. Can be stabilized.

  In one aspect of the coating apparatus, the control unit changes the waiting time so that the maximum deviation of the coating amount due to the variation is equal to or less than a predetermined threshold in the variation range of the viscosity of the coating solution. By doing in this way, the coating device can suppress the fluctuation | variation range of the coating amount resulting from the fluctuation | variation of the viscosity of a coating liquid below a threshold value, and can stabilize a coating amount suitably.

  In another aspect of the coating apparatus, the coating apparatus includes an adjustment input unit that receives an adjustment input for adjusting the coating amount, and the control unit has a maximum deviation of the coating amount caused by the variation equal to or less than the threshold value. Within the range, the waiting time is changed corresponding to the adjustment input. According to this aspect, the coating apparatus receives the adjustment input of the target coating amount, and suitably adjusts the standby time so that the coating amount specified by the adjustment input is obtained.

  In another aspect of the coating apparatus, the coating apparatus includes an adjustment input unit that receives an adjustment input for adjusting the coating amount, and the control unit has a maximum deviation of the coating amount caused by the variation equal to or less than a predetermined value. Within this range, the tip diameter of the application needle that can correspond to the application amount specified based on the adjustment input is presented from the presentation unit. In this aspect, the coating apparatus determines the tip diameter suitable for the coating amount specified by the adjustment input in consideration that the coating amount increases as the tip diameter of the coating needle increases. Then, the coating device can preferably prompt replacement with a coating needle having a tip diameter suitable for the coating amount specified by the adjustment input.

  In another aspect of the coating apparatus, the coating apparatus includes a coating liquid specifying information input unit that receives input of information for specifying the coating liquid, and the acquisition unit is based on information for specifying the coating liquid. Information on the variation range of the viscosity of the coating solution is acquired. With this aspect, the coating apparatus can suitably determine the assumed viscosity fluctuation range.

  In another aspect of the coating apparatus, the coating apparatus includes a viscosity information input unit that receives input of viscosity information regarding at least one of the maximum viscosity, the minimum viscosity, and the standard viscosity of the coating solution, and the acquisition unit includes: Based on the viscosity information, information on the variation range of the viscosity of the coating liquid is acquired. Also according to this aspect, the coating apparatus can suitably determine the assumed viscosity fluctuation range.

  In another embodiment suitable for the present invention, the driving of moving the application needle to a first position where the application liquid is applied to the tip of the application needle and a second position where the applied application liquid is applied to an object. A control method executed by a coating apparatus including a section, an acquisition step of acquiring information related to a variation range of the viscosity of the coating liquid, and the position of the coating needle is shifted from the first position to the second position. And a control step of changing the waiting time in accordance with the fluctuation range of the viscosity of the coating liquid. By executing this control method, the coating apparatus can reduce the variation in the coating amount due to the variation in the viscosity of the coating liquid, and can suitably stabilize the coating amount.

  In another embodiment suitable for the present invention, the driving of moving the application needle to a first position where the application liquid is applied to the tip of the application needle and a second position where the applied application liquid is applied to an object. A program executed by a computer for controlling the unit, the acquisition unit for acquiring information related to the fluctuation range of the viscosity of the coating solution, and the position of the coating needle during the transition from the first position to the second position The computer is caused to function as a control unit that changes the waiting time corresponding to the fluctuation range of the viscosity of the coating liquid. By executing this program, the computer can reduce the variation in the coating amount due to the variation in the viscosity of the coating solution, and can suitably stabilize the coating amount.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[Schematic configuration]
FIG. 1 is a schematic view of a dispenser device 100 according to the present embodiment. A dispenser device 100 shown in FIG. 1 applies a coating liquid 6 to an object 7, and is mainly for applying a container 2 into which the coating liquid 6 is injected and the coating liquid 6 to the object 7. The application needle 3, the lid 4 of the container 2, the support unit 5, the input unit 8, the drive unit 9, the presentation unit 10, and the control unit 11 are included.

  The container 2 is sealed by the lid 4 in a state where the coating liquid 6 is injected. A protrusion 12 is provided on the side of the container 2, and a support 5 is provided on the protrusion 12. The support portion 5 is provided so as to protrude upward from the projection portion 12, and the container 2 is fixed via the support portion 5.

  The application needle 3 is inserted into the container 2 in a state of penetrating through a hole provided in the lid 4. And the front-end | tip part 13 of the applicator needle 3 shown in FIG. 1 is the state (it is also called "immersion state") immersed in the coating liquid 6 accommodated in the container 2. As shown in FIG. Moreover, the hole 15 for the front-end | tip part 13 of the application needle | hook 3 to penetrate at the time of application | coating at the bottom part of the container 2 is formed. The diameter of the hole 15 is slightly larger than the diameter of the application needle 3 that penetrates the hole 15 when applied to the object 7, and the application needle 3 penetrates the hole 15 due to the surface tension of the application liquid 6. Even when it is not, leakage of the coating liquid 6 from the hole 15 hardly occurs. A chamfered portion 16 is formed at the lower end of the hole 15.

  The coating liquid 6 adhered to the tip portion 13 of the coating needle 3, and the tip portion 13 of the coating needle 3 protruded from the bottom of the container 2 and contacted the object 7 (also referred to as “contact state”). In some cases, it is applied to the object 7. Hereinafter, the amount of the coating liquid 6 applied to the object 7 by one contact operation of the tip 13 with the object 7 is also referred to as “application amount X”. The coating liquid 6 has a predetermined viscosity (also referred to as “viscosity V”). The viscosity V changes with time according to the ambient temperature and the standing time.

  The input unit 8 receives input related to the expected variation range of the viscosity V of the coating liquid 6 during the period during which the coating liquid 6 is applied, and supplies the input information regarding the received variation range of the viscosity V to the control unit 11. To do. Hereinafter, the maximum value and the minimum value of the above-described variation range of the viscosity V are also referred to as “maximum viscosity Vmax” and “minimum viscosity Vmin”, respectively. Similarly, the input unit 8 receives an input for adjusting a preset target application amount X, and supplies the received input information to the control unit 11. The input unit 8 is an example of the “viscosity information input unit” and the “adjustment input unit” in the present invention.

  The drive part 9 switches the state of the front-end | tip part 13 between an immersion state and a contact state by moving the application needle 3 up and down based on control of the control part 11. FIG. The movement of the application needle 3 by the drive unit 9 will be described later with reference to FIG.

  The presentation unit 10 is a display, for example, and performs a predetermined output based on the control of the control unit 11. In the present embodiment, for example, the presentation unit 10 is based on the control of the control unit 11 and indicates that it is necessary to replace the application needle 3 in order to realize the target application amount X on the object 7. In addition, information regarding the tip diameter of the application needle 3 necessary for realizing the target application amount X is presented.

  The control unit 11 includes a CPU, a ROM, a RAM, and the like, and controls the entire dispenser device 100. For example, the control unit 11 controls the drive unit 9 to move the application needle 3 up and down. At this time, the control unit 11 keeps the tip 13 of the application needle 3 in an intermediate state between the dipping state and the contact state based on the input information related to the variation range of the viscosity V to the input unit 8 (“standby” Also referred to as “time Tw”). The waiting time Tw will be described later with reference to FIG. In addition, when the control unit 11 determines that the target application amount X cannot be achieved by adjusting the waiting time Tw, the control unit 11 calculates the distal end diameter of the distal end portion 13 of the application needle 3 necessary for realizing the application amount X. Then, information related to the tip diameter is presented to the presentation unit 10. The control unit 11 is an example of a computer that executes the “acquisition unit”, “control unit”, and program in the present invention.

  FIG. 2A is a view showing a state in which the tip 13 of the application needle 3 protrudes from the container 2 from the chamfered portion 15 (that is, an intermediate state between the immersion state and the contact state), and FIG. ) Is a diagram showing a contact state in which the tip end portion 13 is brought into contact with the object 7.

  When applying the coating liquid 6 to the object 7, the control unit 11, after the waiting time Tw has elapsed since the tip portion 13 of the coating needle 3 protrudes from the container 2 as shown in FIG. 2 (B), the tip 13 of the application needle 3 is brought into contact with the object 7. Here, the waiting time Tw has a negative correlation with the coating amount X, and the coating amount X tends to decrease as the waiting time Tw increases. Therefore, the control unit 11 can adjust the coating amount X by adjusting the length of the standby time Tw. The immersion state shown in FIG. 1 is an example of the “first state” in the present invention, and the contact state shown in FIG. 2B is an example of the “second state” in the present invention. Similarly, the position of the application needle 3 in the dipping state is an example of the “first position” in the present invention, and the position of the application needle 3 in the contact state is an example of the “second position” in the present invention.

  Here, the relationship between the standby time Tw and the coating amount X will be supplementarily described with reference to FIG. FIG. 3A shows the tip 13 immediately after the tip 13 of the application needle 3 protrudes from the container 2 and the coating liquid 6 adhering to the tip 13, and FIG. The tip part 13 after the tip part 13 protrudes from the container 2 and the coating liquid 6 adhering to the tip part 13 after a lapse of a predetermined time is shown. As shown in FIGS. 3A and 3B, when the tip 13 of the application needle 3 is protruded from the container 2, the application liquid 6 is directed toward the base end of the application needle 3 due to the surface tension of the application liquid 6. Moves gradually. Therefore, the longer the waiting time Tw and the longer the state in which the tip portion 13 of the application needle 3 protrudes from the container 2 is continued, the less the coating liquid 6 around the tip portion 13 is. The applied amount X is reduced.

  The controller 11 may adjust the waiting time Tw by adjusting the speed at which the tip 13 of the application needle 3 is moved to the object 7, and the tip 13 of the application needle 3 protrudes from the container 2. The standby time Tw may be adjusted by stopping for a predetermined time in the state of being stopped.

[Adjustment of coating amount]
Next, the adjustment process of the coating amount X will be described. Schematically, the control unit 11 sets a waiting time Tw range (also referred to as “candidate range Rtw”) in which the variation in the coating amount X caused by the change in the viscosity V with time is equal to or less than a threshold value. Furthermore, the control unit 11 considers that the application amount X increases as the tip diameter of the application needle 3 increases, and determines that the target application amount X cannot be achieved in the standby time Tw within the candidate range Rtw. Then, the fact that the tip diameter of the application needle 3 should be changed is presented, and the application amount X is adjusted by changing the tip diameter. Thereby, the control part 11 adjusts suitably so that the designated application | coating amount X may be apply | coated to the target object 7. FIG.

(1) Process Overview FIG. 4 is a flowchart showing an overview of the adjustment process of the coating amount X of the control unit 11 in this embodiment.

  First, the control part 11 receives the input regarding the assumed maximum viscosity Vmax and the minimum viscosity Vmin of the coating liquid 6 by the input part 8 (step S11). Thereby, the control part 11 specifies the fluctuation | variation range of the viscosity V with which the coating liquid 6 is assumed. In addition, the control part 11 may receive the input of the information for estimating the fluctuation range of the viscosity of the coating liquid 6, instead of receiving the input of the maximum viscosity Vmax and the minimum viscosity Vmin of the coating liquid 6. Specifically, information such as the product name and material name of the coating liquid 6 that can be used to specify the components of the coating liquid 6, or the maximum viscosity Vmax, the minimum viscosity Vmin, or the standard viscosity of the coating liquid 6 is input. At least one of the inputs may be accepted. In addition, input of information such as the elapsed time after mixing the ambient temperature condition and the material that is the basis of the coating liquid 6 may be accepted. In this case, the control unit 11 may specify the assumed fluctuation range of the viscosity V of the coating liquid 6 by referring to a table stored in advance based on the received information. The above-mentioned table is a table showing, for example, the correspondence between the product name, the material name, the maximum viscosity Vmax, the minimum viscosity Vin, or the standard viscosity of the coating liquid 6 and the assumed fluctuation range of the coating liquid 6. , Generated based on experiments and the like and stored in advance by the control unit 11.

  Next, the control unit 11 determines that the maximum deviation (also referred to as “maximum deviation dX”) of the application amount X between the viscosities V within the assumed fluctuation range of the viscosity V of the coating liquid 6 is a threshold (“threshold dXth”). The candidate range Rtw is determined as follows (step S12). Here, the maximum deviation dX is the coating amount X corresponding to each viscosity V within the assumed fluctuation range of the viscosity V of the coating liquid 6 (specifically, a past measured value of the coating amount X or a predicted value based on the measured value). ) Refers to the difference between the maximum and minimum values. As a result, the control unit 11 determines a range of the waiting time Tw such that the variation amount of the coating amount X is not more than the threshold value dXth even when the viscosity V varies within the assumed variation range. be able to. Here, the threshold value dXth is set based on an experiment or the like based on an allowable variation amount of the coating amount X or the like. Details of step S12 will be described later.

  Next, the control unit 11 determines whether or not there is an adjustment input of the target value of the application amount X to the input unit 8 (step S13). The adjustment input described above may be a numerical value input that directly specifies the target value of the coating amount X, or an input that increases or decreases the coating amount one step at a time. In the case of the latter adjustment input, for example, the control unit 11 presents the predicted value of the application amount X when the maximum deviation dX is set to the minimum waiting time Tw by the presenting unit 10 and predicts the presented application amount X. You may receive the input which increases / decreases one step at a time with respect to a value. The control unit 11 calculates the standby time Tw at which the above-described maximum deviation dX is minimum and the predicted value of the coating amount X in the case of the standby time Tw by using, for example, a regression equation described later.

  And the control part 11 advances a process to step S14, when there exists adjustment input of the target value of the application quantity X to the input part 8 (step S13; Yes). On the other hand, the control part 11 advances a process to step S15, when there is no adjustment input of the target value of the application quantity X to the input part 8 (step S13; No).

  Next, the control unit 11 determines whether or not it is possible to cope with the adjustment of the standby time Tw within the candidate range Rtw in order to realize the target value of the adjusted application amount X (step S14). In this case, as will be described later, the control unit 11 determines the average value of the coating amount X (“average coating amount” based on a past actual measurement value or the like for each waiting time Tw with respect to each viscosity V within the assumed variation range of the viscosity V. And the presence or absence of a waiting time Tw at which the average application amount becomes the target value of the application amount X is determined.

  If the control unit 11 determines that the adjustment is possible by adjusting the standby time Tw (step S14; Yes), the control unit 11 is optimal for realizing the target application amount X from the candidate range Rtw set in step S12. A waiting time Tw is selected (step S15). As will be described later, the control unit 11 selects from the candidate range Rtw a waiting time Tw at which the above-described average application amount becomes the target application amount X. Then, the control part 11 performs the application | coating process of the coating liquid 6 with respect to the target object 7 by driving the application needle 3 by the drive part 9 based on the waiting time Tw selected at step S15. Thereby, the control part 11 can reduce suitably the variation | change_quantity of the coating amount X resulting from the change of the viscosity V of the coating liquid 6, and can apply | coat the coating liquid 6 of the stable quantity to the target object 7. FIG.

  On the other hand, when it is determined that the control unit 11 cannot cope with the adjustment of the waiting time Tw (step S14; No), the tip unit diameter of the application needle 3 for realizing the target value of the application amount X is calculated, and the presentation unit 10 (Step S16). In this case, for example, the control unit 11 refers to a regression equation or the like that defines the relationship between the application amount X and the tip diameter of the application needle 3 to determine the tip diameter of the application needle 3 that is optimal for the target application amount X. Calculate and present to the presentation unit 10.

(2) Details of Candidate Range for Standby Time Next, the candidate range Rtw in step S12 will be described in detail. The control unit 11 takes into consideration the change in the viscosity V of the coating liquid 6 and the change in the coating amount X accompanying the change, and the waiting time Tw when the maximum deviation dX of the coating amount X resulting from the change in the viscosity V is less than or equal to the threshold value dXth. The candidate range Rtw is set. Thereby, even if the viscosity V changes with time, the variation in the target coating amount X is suitably reduced.

  FIG. 5 is a graph showing the relationship between the standby time Tw based on the actual measurement data and the coating amount X. Here, the graph “G1” shows the relationship between the waiting time Tw and the coating amount X when the minimum viscosity Vmin, which is the lower limit value of the assumed fluctuation range of the viscosity V, and the graph “G2” shows the viscosity V The relationship between the waiting time Tw and the coating amount X when the value is an intermediate value of the assumed fluctuation range is shown, and the graph “G3” indicates the maximum viscosity Vmax that is the upper limit value of the assumed fluctuation range of the viscosity V. The relationship between the waiting time Tw and the coating amount X is shown. The graph “G4” indicates an average value (that is, average coating amount) of the coating amount X indicated by the graphs G1 to G3 in the period of the standby time Tw in which the maximum deviation dX is equal to or less than the threshold value dXth.

  As shown in FIG. 5, the mode of change in the coating amount X with respect to the change in the waiting time Tw differs depending on the viscosity V. Specifically, in the value range where the waiting time Tw is equal to or less than “Tw1”, the coating amount X when the viscosity V is the minimum viscosity Vmin is the largest, and the coating amount X when the viscosity V is the maximum viscosity Vmax is the smallest. . On the other hand, in the range where the waiting time Tw is larger than “Tw2”, the coating amount X when the viscosity V is the maximum viscosity Vmax is the largest, and the coating amount X when the viscosity V is the minimum viscosity Vmin is the smallest. Thus, it can be seen that the magnitude relationship of the coating amount X at each viscosity V reverses as the waiting time Tw increases.

  When the waiting time Tw is from “Tw1” to “Tw2”, the deviation between the largest coating amount X and the smallest coating amount X in the target viscosity V (that is, the maximum deviation dX) is a threshold value. It is below dXth. Therefore, in this case, the control unit 11 sets the candidate range Rtw to a range from “Tw1” to “Tw2”, so that the variation value of the coating amount X can be obtained even when the viscosity V changes. The maximum value can be suppressed below the threshold value dXth.

  In the present embodiment, the control unit 11 applies the average application amount shown in the graph G4 (that is, the average of the application amounts X shown in G1 to G3) for each standby time Tw within the candidate range Rtw. Set as quantity X. For example, in the example of FIG. 5, since the average application amount corresponding to the standby time “Tw12” at which the maximum deviation dX is the minimum is “X12”, the control unit 11 sets the standby time Tw to “Tw12”. The coating amount X that is sometimes predicted is considered to be “X12”. In the example of FIG. 5, the control unit 11 calculates the average coating amount for the three viscosities V (the maximum viscosity Vmax, the minimum viscosity Vmin, and the intermediate viscosity between them). It is not limited to this. For example, when there is actually measured data of the coating amount X corresponding to four or more viscosities V within the assumed fluctuation range, the control unit 11 averages the coating amount X corresponding to all these viscosities V. The coating amount is calculated.

(3) Calculation of waiting time and tip diameter based on regression equation Next, a method for determining the waiting time Tw and the tip diameter of the application needle 3 based on the regression equation obtained by multiple regression analysis will be described.

  FIG. 6 is a table generated based on actual measurement data indicating the relationship between the waiting time Tw and the coating amount X for each assumed viscosity V. In the table of FIG. 6, each record in which the maximum viscosity Vmax and the minimum viscosity Vmin, the waiting time Tw, and the average application amount are associated at least is recorded. Information on other parameters (not shown) (for example, the tip diameter of the application needle 3) that have an influence on the application amount X set at the time of actual measurement is also appropriately recorded in the above-described records.

  “Standby time (ms)” in FIG. 6 indicates a standby time Tw (“Tw12” in FIG. 5) at which the maximum deviation dX is minimum, and “average application amount (nL)” corresponds to the corresponding standby time Tw. The average coating amount (“X12” in FIG. 5) is shown. In the example of FIG. 6, after collecting actual measurement data of the coating amount X by changing parameters affecting the coating amount X such as the viscosity V, the tip diameter of the coating needle 3 and the waiting time Tw, the maximum viscosity Vmax and the minimum viscosity are collected. Each record is generated by calculating the standby time Tw that minimizes the maximum deviation dX when the combination of Vmin is changed and the average application amount for the standby time Tw. For example, in the case of the first record, the measurement data indicating the relationship between the waiting time Tw and the coating amount X for each viscosity V from “1 (Pa · s)” to “1.3 (Pa · s)” As shown, the waiting time Tw at which the maximum deviation dX is minimum and the average coating amount for each viscosity V at the waiting time Tw are calculated. Specifically, the standby time Tw at which the maximum deviation dX is minimum in this case is “56 (ms)”, and the average coating amount for each viscosity V at the standby time Tw is “12 (nL)”. ing.

  In this way, a table in which the maximum viscosity Vmax, the minimum viscosity Vmin, the standby time Tw at which the maximum deviation dX is minimum, the average application amount corresponding to the standby time Tw, and the like are generated in advance as shown in FIG. deep.

  Next, a regression equation (approximate equation) necessary at each step of the flowchart of FIG. 4 is calculated by performing a multiple regression analysis using a table based on actual measurement data as shown in FIG. Specifically, the regression equation of the standby time Tw with the maximum viscosity Vmax and the minimum viscosity Vmin as variables, the regression equation of the coating amount X (that is, the average coating amount in FIG. 6) with the viscosity V and the standby time Tw as variables, standby A regression equation of the application amount X with the time Tw and the tip diameter of the application needle 3 as variables is calculated. And the control part 11 memorize | stores the information of these regression equations previously. Note that the table generation process and the above-described regression equation calculation process shown in FIG. 6 do not have to be performed by the control unit 11, and the control unit 11 stores the regression equation information calculated by another device in the flowchart of FIG. It may be stored in advance before execution.

  And the control part 11 performs each process of step S12, S14, S15, and S16 of FIG. 4 by using these regression equations memorize | stored beforehand.

  For example, in determining the candidate range Rtw in step S12, the control unit 11 first uses the regression equation of the standby time Tw with the maximum viscosity Vmax and the minimum viscosity Vmin as variables, and uses the maximum viscosity Vmax and the minimum viscosity specified in step S11. By substituting Vmin, the standby time Tw at which the maximum deviation dX is minimum is specified. Further, the control unit 11 uses the regression equation of the coating amount X with the viscosity V and the waiting time Tw as variables, so that the waiting time in which the maximum deviation dX is minimized based on the specified maximum viscosity Vmax and the minimum viscosity Vmin. The maximum deviation dX in the vicinity value of Tw is calculated. Then, the control unit 11 specifies the range of the standby time Tw in which the calculated maximum deviation dX is equal to or less than the threshold value dXth as the candidate range Rtw.

  Further, in step S14, the control unit 11 compares each waiting time Tw in the candidate range Rtw and the current applying needle 3 with respect to the regression equation of the application amount X using the waiting time Tw and the tip diameter of the applying needle 3 as variables. By substituting the tip diameter, the application amount X corresponding to each waiting time Tw within the candidate range Rtw is specified, and it is determined whether or not the target application amount X can be achieved only by adjusting the waiting time Tw. Further, in step S15, the control unit 11 substitutes the target application amount X and the current tip diameter of the application needle 3 into the regression equation of the application amount X with the waiting time Tw and the tip diameter of the application needle 3 as variables. Thus, the waiting time Tw is calculated. In step S16, the control unit 11 waits for the target application amount X and the maximum deviation dX to be minimum with respect to the regression formula of the application amount X, for example, with the standby time Tw and the tip diameter of the application needle 3 as variables. By substituting the time Tw, the necessary tip diameter of the application needle 3 is calculated.

  As described above, the control unit 11 stores the approximate expression obtained from the actual measurement data by a statistical method such as multiple regression analysis, so that each process of steps S12, S14, S15, and S16 of FIG. Can be executed.

  As described above, the dispenser device 100 according to the present embodiment mainly includes the container 2 into which the coating liquid 6 is injected, the coating needle 3, the input unit 8, the drive unit 9, and the control unit 11. Prepare. The control unit 11 acquires information related to the fluctuation range of the viscosity V of the coating liquid 6 based on the input to the input unit 8. The control unit 11 sets a waiting time Tw during which the drive unit 9 shifts from a dipping state in which the coating liquid 6 is applied to the tip 13 of the coating needle 3 to a contact state in which the applied coating liquid 6 is applied to the object 7. Control. At this time, the control unit 11 changes the waiting time Tw corresponding to the fluctuation range of the viscosity V of the coating liquid 6. Thereby, the dispenser apparatus 100 can reduce the fluctuation | variation of the coating amount resulting from the fluctuation | variation of the viscosity of a coating liquid, and can stabilize a coating amount suitably.

[Modification]
Hereinafter, each modification suitable for the above-described embodiment will be described. Each of these modified examples can be applied to the above-described embodiments in any combination.

(Modification 1)
The processing of the flowchart of FIG. 4 is an example, and the processing flow to which the present invention can be applied is not limited to the example shown in FIG.

  For example, instead of setting the candidate range Rtw in step S12, the control unit 11 determines the standby time Tw at which the maximum deviation dX is minimum based on a regression equation or the like, and sets the application amount X corresponding to the determined standby time Tw. When the predicted value is a predetermined amount or more away from the target application amount X, the optimal tip diameter of the application needle 3 may be calculated and presented based on step S16. In this case, the control unit 11 does not need to determine the candidate range Rtw. In another example, the control unit 11 may move to step S14 after the end of step S12 without receiving the adjustment input of the target application amount X in step S13. In yet another example, instead of calculating and presenting the optimum tip diameter of the application needle 3 in step S16, the control unit 11 may output from the presentation unit 10 that the application needle 3 needs to be replaced. Good.

(Modification 2)
The control unit 11 may execute the processes of steps S12, S14, S15, and S16 in FIG. 4 by a method other than using the regression equation obtained by the multiple regression analysis.

  For example, the application amount X of the application liquid 6 applied to the object 7 is approximately proportional to the area of the tip portion 13 of the application needle 3, and the area is proportional to the square of the tip diameter. Therefore, in step S16, the control unit 11 may calculate the optimum tip diameter of the application needle 3 from the target application amount X based on the above relationship. At this time, for example, the control unit 11 calculates the necessary increase / decrease width of the tip diameter of the application needle 3 based on the above-described relationship from the excess or underapplication amount X that cannot be handled by adjusting the waiting time Tw. You may show the presentation part 10 the front-end | tip diameter which correct | amended the present front-end | tip diameter of the applicator needle 3 by the increase / decrease width. Also in this example, the control unit 11 preferably prompts the replacement of the application needle 3 with the application needle 3 having the optimum tip diameter in order to achieve the target application amount X, and appropriately adjusts the application amount X. Can do.

  Further, in step S12, the control unit 11 refers to the actually measured data of each viscosity V within the variation range of the viscosity V specified in step S11, and calculates the maximum deviation dX in each waiting time Tw, thereby the candidate range. Rtw may be determined in the same manner as in the example of FIG. Similarly, in steps S14 and S15, the control unit 11 refers to the actually measured data of each viscosity V within the variation range of the viscosity V specified in step S11, and calculates an average coating amount corresponding to each waiting time Tw. Thus, the waiting time Tw may be selected.

DESCRIPTION OF SYMBOLS 2 Container 3 Coating needle 4 Lid 5 Support part 6 Coating liquid 7 Object 8 Input part 9 Drive part 10 Presentation part 11 Control part 100 Dispenser apparatus

Claims (8)

An acquisition unit for acquiring information on the fluctuation range of the viscosity of the coating liquid;
A control unit for controlling a waiting time during the transition from the first state in which the application liquid is applied to the tip of the application needle to the second state in which the applied application liquid is applied to an object;
With
The said control part changes the said waiting time according to the fluctuation | variation range of the viscosity of the said coating liquid, The coating device characterized by the above-mentioned.   2. The control unit according to claim 1, wherein the control unit changes the waiting time so that a maximum deviation of the coating amount due to the fluctuation is equal to or less than a predetermined threshold in a fluctuation range of the viscosity of the coating liquid. The coating apparatus as described. An adjustment input unit for receiving an adjustment input for adjusting the coating amount;
3. The application according to claim 2, wherein the control unit changes the waiting time corresponding to the adjustment input within a range in which a maximum deviation of the application amount due to the variation is equal to or less than the threshold value. apparatus. An adjustment input unit for receiving an adjustment input for adjusting the coating amount;
The control unit presents, from the presentation unit, the tip diameter of the application needle that can correspond to the application amount specified based on the adjustment input within a range where the maximum deviation of the application amount due to the fluctuation is equal to or less than a predetermined value. The coating apparatus according to claim 2 or 3, wherein A coating liquid specifying information input unit for receiving input of information for specifying the coating liquid;
5. The coating apparatus according to claim 1, wherein the acquisition unit acquires information related to a variation range of the viscosity of the coating liquid based on information for specifying the coating liquid. A viscosity information input unit that receives input of viscosity information related to at least one of the maximum viscosity, the minimum viscosity, and the standard viscosity of the coating liquid;
5. The coating apparatus according to claim 1, wherein the acquisition unit acquires information related to a variation range of the viscosity of the coating liquid based on the viscosity information. A control method executed by a coating apparatus including a driving unit that moves the application needle to a first position where the application liquid is attached to the tip of the application needle and a second position where the applied application liquid is applied to an object. Because
An acquisition step for acquiring information on a variation range of the viscosity of the coating liquid;
A control step of changing a waiting time during which the position of the application needle moves from the first position to the second position in accordance with a variation range of the viscosity of the application liquid;
A control method characterized by comprising: A program executed by a computer that controls a drive unit that moves the application needle to a first position where the application liquid is applied to the tip of the application needle and a second position where the applied application liquid is applied to an object. There,
An acquisition unit for acquiring information on a variation range of the viscosity of the coating liquid;
The computer is caused to function as a control unit that changes a waiting time during which the position of the application needle moves from the first position to the second position in accordance with a variation range of the viscosity of the application liquid. Program to do.

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