JP4701976B2 - Discharge control device - Google Patents

Description

  The present invention relates to a discharge control device.

2. Description of the Related Art Conventionally, as a discharge control device, as described in Patent Document 1, for example, there is a device that presets a discharge time of an adhesive with respect to an adherend (optical device). In this discharge control device, the discharge time of the adhesive is determined for each application position of the adherend.
Japanese Patent Laid-Open No. 11-5055

  Some adhesives increase in viscosity over time. When such an adhesive is used in the above-described discharge control device, the discharge speed gradually decreases as the viscosity of the adhesive increases. As a result, there arises a problem that the discharge amount varies even if the discharge time is the same. If the discharge amount varies, the adhesive may not be sufficiently attached to the adherend. If an object to be bonded with insufficient adhesion of an adhesive is to be bonded to another part, adhesion failure is likely to occur.

  Therefore, an object of the present invention is to provide a discharge control device capable of suppressing variations in the discharge amount even for a liquid whose viscosity increases with the passage of time.

A discharge control device according to the present invention is a discharge control device for discharging a liquid whose viscosity increases with the passage of time, according to elapsed time information indicating an elapsed time from a predetermined timing and the elapsed time. Storage means storing the first discharge condition for discharging a predetermined amount of liquid in association with each other, measuring means for measuring the elapsed time, and the elapsed time based on the elapsed time measured by the measuring means. The first discharge condition associated with the elapsed time information indicating the time is extracted from the storage means, and the difference amount between the discharge amount and the target amount when the liquid is actually discharged based on the extracted first discharge condition is calculated. Based on the calculating means for calculating, the difference amount calculated by the calculating means, and the discharge amount characteristic of the liquid according to the elapsed time, the second discharge condition for correcting the difference amount is stored in the storage means. Determined for each elapsed time information The storage means has a third discharge condition for discharging a target amount of liquid based on the correction means, the second discharge condition determined by the correction means, and the first discharge condition stored in the storage means. Specifying means for specifying each stored elapsed time information , the first discharge condition includes the first discharge time, and the liquid discharge amount characteristic is obtained from the first discharge time and the target amount. It is the reciprocal of the liquid discharge speed, and the second discharge condition includes a second discharge time obtained from the multiplication result of the difference amount and the reciprocal of the liquid discharge speed, and the third discharge condition is the first discharge time. And a third discharge time based on the second discharge time .

  In the ejection control device of the present invention, before actually ejecting the liquid, information indicating the elapsed time and the first ejection condition corresponding to the elapsed time are stored in the storage unit in association with each other. The computing means extracts the first discharge condition from the storage means based on the elapsed time measured by the measuring means. Thereby, the 1st discharge conditions according to the measured elapsed time are acquirable. The calculation means calculates the difference amount between the discharge amount and the target amount when the liquid is discharged based on the first discharge condition after extracting the first discharge condition. Thereby, for example, when the discharge amount when the liquid is actually discharged under the first discharge condition is smaller than the target amount, the shortage can be detected as the difference amount.

  The correction unit acquires a second discharge condition for correcting the difference amount based on the difference amount calculated by the calculation unit and the liquid discharge amount characteristic according to the elapsed time. Thereby, for example, it is possible to obtain discharge conditions for discharging the shortage. The correction unit acquires the second discharge condition for each elapsed time information stored in the storage unit. Thereby, a 2nd discharge condition and elapsed time can be matched.

  The specifying unit specifies a third discharge condition for discharging a target amount of liquid based on the second discharge condition determined by the correcting unit and the first discharge condition stored in the storage unit. Thereby, what corrected the 1st discharge conditions by the 2nd discharge conditions can be made into the 3rd discharge conditions. Therefore, it is possible to obtain a discharge condition that can reliably discharge the target amount. The specifying unit specifies the third discharge condition for each elapsed time information stored in the storage unit. Thereby, the elapsed time and the third discharge condition can be associated with each other. Therefore, even if the liquid increases in viscosity with the passage of time, if the liquid is discharged according to the third discharge condition corresponding to the elapsed time, the target amount of liquid is reliably and stable regardless of the elapsed time. Can be discharged. Therefore, even for a liquid whose viscosity increases with the passage of time, variations in the discharge amount can be suppressed.

In the present invention, the first discharge condition includes the first discharge time, the liquid discharge amount characteristic is the reciprocal of the liquid discharge speed obtained from the first discharge time and the target amount, and the second discharge condition Includes the second discharge time obtained from the multiplication result of the difference amount and the reciprocal of the liquid discharge speed, and the third discharge condition is the third discharge time based on the first discharge time and the second discharge time. Contains .

Thereby , the discharge amount of the liquid is controlled by the discharge time. Further, by obtaining the second discharge time from the multiplication result of the reciprocal of the liquid discharge speed and the difference amount, the second discharge time can be set as a time for more accurately correcting the difference amount. Since the third discharge condition includes a third discharge time based on the second discharge time, if the liquid is discharged according to the third discharge condition, the target amount can be discharged more reliably.

  The liquid is an adhesive obtained by mixing a main agent mainly composed of a curable composition and a curing agent mainly composed of a curing accelerator, and the predetermined timing refers to the main agent and the curing agent. It is preferable to be immediately after mixing.

  In this case, since the elapsed time indicated by the elapsed time information and the elapsed time measured by the measuring means are both based on the time immediately after mixing the main agent and the curing agent, the deviation of these elapsed times is reduced. be able to. Therefore, when the calculation unit extracts the first discharge condition from the storage unit, it is possible to more reliably obtain the one that matches the measured elapsed time. As a result, the target amount of liquid can be discharged more reliably.

  ADVANTAGE OF THE INVENTION According to this invention, even if it is a liquid whose viscosity increases with progress of time, the discharge control apparatus which can suppress the dispersion | variation in discharge amount can be provided.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description, the same reference numerals are used for the same elements or elements having the same function, and redundant description is omitted.

  FIG. 1 is a diagram illustrating a configuration of a discharge system including a discharge control device according to the present embodiment. The discharge system 10 includes a discharge control device 1, a discharge device 2, and a mounting table 14.

  The discharge device 2 has a cylinder 5 and a piston 6. An adhesive (liquid) 4 is stored in the cylinder 5. The adhesive 4 is a two-component adhesive whose viscosity increases with time. The adhesive 4 is obtained by mixing a main agent mainly composed of a curable composition such as an epoxy resin and a curing agent mainly composed of an epoxy resin curing accelerator. The adhesive 4 stored in the cylinder 5 is discharged from the front end port 5 a of the cylinder 5. The discharge device 2 discharges the adhesive 4 according to the control by the discharge control device 1.

  The mounting table 14 is for mounting the substrate 16. The adhesive 4 is discharged from the discharge device 2 to the substrate 16 mounted on the mounting table 14. The mounting table 14 notifies the discharge control apparatus 1 of a change in mass of the one mounted on the mounting table 14.

  The discharge control device 1 according to this embodiment is a device that determines the discharge condition of the adhesive 4. The discharge control device 1 is a computer and physically includes a CPU (Central Processing Unit), a memory, an input device such as a mouse and a keyboard, a display device such as a display, a storage device such as a hard disk, and the like. FIG. 2 is a diagram illustrating a functional configuration of the discharge control apparatus 1 according to the present embodiment. The discharge control device 1 functionally includes an elapsed time timer (measuring unit) 22, a control unit (calculating unit) 23, a correcting unit (correcting unit) 24, a condition determining unit (specifying unit) 26, an actual discharging unit 36, A first condition acquisition unit 38, a first condition storage unit (storage means) 28, a second condition storage unit 30, and a third condition storage unit 32 are provided.

  The elapsed time timer 22 measures an elapsed time from a predetermined timing. Here, the predetermined timing indicates immediately after mixing the main agent constituting the adhesive 4 and the curing agent. The elapsed time timer 22 starts measuring time immediately after mixing the main agent constituting the adhesive 4 and the curing agent.

  The first condition storage unit 28 stores elapsed time information indicating the elapsed time immediately after mixing the main agent constituting the adhesive 4 and the curing agent, the first discharge condition, and the discharge amount characteristic. . Here, the first discharge condition is a discharge condition for discharging a predetermined amount of the adhesive 4 according to the elapsed time. The predetermined amount is 0.45 g in the present embodiment. The first discharge condition includes a first discharge time and a discharge pressure. The discharge pressure indicates a pressure to be applied to the piston 6 when the adhesive 4 is discharged. The first discharge time indicates the time required to discharge a predetermined amount of the adhesive 4 when such discharge pressure is applied to the piston 6. The discharge amount characteristic is obtained from the first discharge time and a predetermined amount. More specifically, the discharge amount characteristic is the reciprocal of the discharge speed of the adhesive 4 and indicates the discharge time per unit amount of the adhesive 4. The discharge amount characteristic is obtained by dividing a predetermined amount of 0.45 g by the first discharge time.

  FIG. 3 is a diagram illustrating an example of information stored in the first condition storage unit 28. According to the example shown in FIG. 3, the first condition storage unit 28 includes the first discharge condition including the elapsed time information “15 minutes”, the first discharge time “5.0 seconds”, and the discharge pressure “150 kPa”. And are stored. This is because when “15 minutes” has passed since the mixing of the main agent and the curing agent constituting the adhesive 4, the pressure of “150 kPa” is applied to the piston 6 of the discharge device 2 from the discharge device 2. When the agent 4 is discharged, it means that “5.00 seconds” are required to discharge 0.45 g of the predetermined amount of adhesive. The first condition storage unit 28 stores “11.11 seconds / g” as the discharge amount characteristic. “11.1 seconds / g” is a value obtained by dividing the first discharge time of 5.0 seconds by a predetermined amount of 0.45 g. As described above, the first condition storage unit 28 stores the first discharge condition and the discharge amount characteristic corresponding to the elapsed time.

  Based on the elapsed time measured by the elapsed time timer 22, the control unit 23 extracts the first discharge condition associated with the elapsed time information indicating the elapsed time from the first condition storage unit 28. Then, based on the extracted first discharge condition, the difference amount between these is calculated from the discharge amount when the adhesive 4 is discharged and the target amount. Here, the target amount is 0.45 g in the present embodiment.

  More specifically, when the elapsed time measured by the elapsed time timer 22 is 15 minutes, the control unit 23 refers to the first condition storage unit 28 and corresponds to the first time corresponding to the elapsed time information “15 minutes”. Extract discharge conditions. The controller 23 instructs the discharge device 2 to discharge the adhesive 4 at the discharge pressure included in the first discharge condition for the first discharge time included in the first discharge condition. Thereafter, the control unit 23 detects the discharge amount of the adhesive 4 based on the mass change notified from the mounting table 14. The control unit 23 calculates the difference amount by subtracting the detected discharge amount of the adhesive 4 from the target amount. When the detected discharge amount of the adhesive 4 is smaller than the target amount, the difference amount is a positive value. When the detected discharge amount of the adhesive 4 is larger than the target amount, the difference amount becomes a negative value. The control unit 23 generates difference information including the calculated difference amount and outputs the difference information to the correction unit 24.

  The correction unit 24 determines a second discharge condition for correcting the difference amount based on the difference amount calculated by the control unit 23 and the discharge amount characteristic of the adhesive 4. The second discharge condition includes a second discharge time necessary for correcting the difference amount. The correction unit 24 determines the second discharge condition for each elapsed time information stored in the first condition storage unit 28.

  More specifically, the correction unit 24 refers to the first condition storage unit 28 and acquires elapsed time information and a discharge amount characteristic corresponding to the elapsed time information. The correction unit 24 multiplies the difference amount included in the difference information received from the control unit 23 by the discharge amount characteristic, and calculates the time required to correct the difference amount. The calculated time is set as the second discharge time. For example, when the difference amount is 0.2 g and the discharge amount characteristic is 11.11 seconds / g, the second discharge time is 0.22 seconds (more strictly, 0.2222 seconds). The correction unit 24 generates a second discharge condition including the second discharge time. The correction unit 24 generates second discharge conditions corresponding to the elapsed time information stored in the first condition storage unit 28, respectively. The generated second ejection condition and the elapsed time information are stored in the second condition storage unit 30 in association with each other. When the storage in the second condition storage unit 30 is completed, the correction unit 24 notifies the condition determination unit 26 that the storage is completed.

  FIG. 4 is a diagram illustrating an example of information stored in the second condition storage unit 30. According to the example shown in FIG. 4, the elapsed time information “15 minutes” and the second discharge condition including “0.22 seconds” as the second discharge time are stored. Further, the elapsed time information “30 minutes” and the second discharge condition including “0.24 seconds” as the second discharge time are stored.

  The condition determination unit 26 discharges the adhesive 4 by a target amount based on each of the second discharge conditions determined by the correction unit 24 and each of the first discharge conditions stored in the first condition storage unit 28. The third discharge condition is specified. The third discharge condition includes a third discharge time necessary for discharging the adhesive 4 by a target amount. The condition determination unit 26 specifies the third discharge condition for each elapsed time information stored in the first condition storage unit 28.

  More specifically, the condition determination unit 26 receives a notification from the correction unit 24 that storage in the second condition storage unit 30 is complete. Upon receipt of this notification, the condition determination unit 26 refers to the first condition storage unit 28 and the second condition storage unit 30 and determines the first discharge condition and the second discharge condition associated with the same elapsed time information. Extract. The condition determining unit 26 calculates the third discharge time by adding the first discharge time included in the extracted first discharge condition and the second discharge time included in the second discharge condition. The condition determining unit 26 generates a third discharge condition including the calculated third discharge time and the discharge pressure included in the extracted first discharge condition. The condition determination unit 26 generates a third discharge condition corresponding to each elapsed time information stored in the second condition storage unit 30. Then, the generated third discharge condition and the elapsed time information are associated with each other and stored in the third condition storage unit 32. When the storage in the third condition storage unit 32 is completed, the condition determination unit 26 notifies the actual ejection unit 36 that the storage is completed.

  FIG. 5 is a diagram illustrating an example of information stored in the third condition storage unit 32. According to the example shown in FIG. 5, the elapsed time information “15 minutes” and the third discharge condition including the third discharge time “5.22 seconds” and the discharge pressure “150 kPa” are stored. Further, the elapsed time information “30 minutes” and the third discharge condition including the third discharge time “5.64 seconds” and the discharge pressure “150 kPa” are stored.

  The actual ejection unit 36 receives a notification from the condition determination unit 26 that the storage in the third condition storage unit 32 is finished. When receiving the notification, the actual discharge unit 36 refers to the elapsed time timer 22 and specifies the elapsed time. Based on the specified elapsed time, the actual discharge unit 36 extracts the third discharge condition associated with the elapsed information indicating the elapsed time from the third condition storage unit 32. The actual discharge unit 36 instructs the discharge device 2 to discharge the adhesive 4 at the discharge pressure included in the extracted third discharge condition for the third discharge time included in the extracted third discharge condition.

  The first condition acquisition unit 38 acquires information stored in the first condition storage unit 28. When the elapsed time measured by the elapsed time timer 22 is 15 minutes × n (n is an integer), the first condition acquisition unit 38 applies a predetermined pressure to the piston 6 and adheres to the discharge device 2. An instruction to discharge the agent 4 is given. Then, the mass of the adhesive 4 ejected from the ejection device 2 in response to this instruction, that is, the ejection amount of the adhesive 4 is detected based on the mass change notified from the mounting table 14. When the detected discharge amount of the adhesive 4 reaches a predetermined amount of 0.45 g, the discharge device 2 is instructed to stop discharging the adhesive 4. The first condition acquisition unit 38 sets the time from the start of discharge of the adhesive 4 to the stop of discharge as the first discharge time, and sets the pressure applied to the piston 6 as the discharge pressure. The first condition acquisition unit 38 generates a first discharge condition including a first discharge time and a discharge pressure. Then, the generated first discharge condition and the elapsed time information indicating the elapsed time of 15 minutes × n (n is an integer) measured by the elapsed time timer 22 are stored in the first condition storage unit 28. The first condition acquisition unit 38 calculates the reciprocal of the discharge speed from the first discharge time and a predetermined amount of 0.45 g, and stores this in the first condition storage unit 28 as a discharge amount characteristic.

  Next, the operation of the above-described discharge control device 1 will be described with reference to FIGS. FIG. 6 is a sequence diagram illustrating an overall process in the discharge control apparatus 1 according to the present embodiment.

  First, the discharge control device 1 performs a process for acquiring the first discharge condition (step S100). After the process for acquiring the first discharge condition is completed, the discharge control device 1 performs the discharge process of the adhesive 4 (step S101).

  FIG. 7 is a flowchart for explaining in detail processing for acquiring the first ejection condition. First, a main agent and a curing agent to be the adhesive 4 are prepared, and these are mixed to obtain the adhesive 4 (step S110). Immediately after mixing the main agent and the curing agent, measurement of elapsed time by the elapsed time timer 22 is started (step S111).

  The adhesive 4 obtained by mixing is stored in the cylinder 5 of the discharge device 2. When the adhesive 4 is stored in the cylinder 5, the first condition acquisition unit 38 refers to the elapsed time timer 22. When the elapsed time measured by the elapsed time timer 22 reaches 15 minutes × n (n is an integer), the first condition acquisition unit 38 applies a preset pressure to the piston 6 and adheres to the discharge device 2. An instruction is given to discharge the agent 4 (step S112). While the discharge device 2 is discharging the adhesive 4, the first condition acquisition unit 38 detects the discharge amount of the adhesive 4 based on the mass change notified from the mounting table 14. When the discharge amount of the adhesive 4 reaches a predetermined amount of 0.45 g, the first condition acquisition unit 38 instructs the discharge device 2 to stop discharging the adhesive 4. Then, the time taken from the start of discharge of the adhesive 4 to the stop of discharge is acquired as the first discharge time (step S113), and the pressure applied to the piston 6 is acquired as the discharge pressure. The first condition acquisition unit 38 generates a first discharge condition including a first discharge time and a discharge pressure.

  The first condition acquisition unit 38 stores the first discharge condition and the elapsed time information indicating the elapsed time “15 minutes × n (n is an integer)” in the first condition storage unit 28 in association with each other (step S114). ). The first condition acquisition unit 38 calculates the reciprocal of the discharge speed from the first discharge time and a predetermined amount of 0.45 g, and stores this in the first condition storage unit 28 as a discharge amount characteristic. The first condition acquisition unit 38 performs a series of steps S112 to S114 every time the elapsed time reaches 15 minutes × n (n is an integer).

  FIG. 8 is a graph showing the relationship between the first discharge time and the elapsed time. FIG. 9 is a graph showing the relationship between the ejection amount characteristic and the elapsed time. The adhesive 4 is an adhesive whose viscosity increases as the elapsed time increases. Therefore, as shown in FIG. 8, the first discharge time, that is, the time required to discharge 0.45 g of the adhesive 4 that is a predetermined amount increases as the elapsed time increases. In addition, as shown in FIG. 9, the discharge speed decreases as the elapsed time increases, and the discharge amount characteristic that is the reciprocal of the discharge speed increases.

  FIG. 10 is a flowchart for explaining the discharge process of the adhesive 4 in detail. First, a main agent and a curing agent to be the adhesive 4 are newly prepared and mixed to obtain the adhesive 4 (step S120). Immediately after mixing the main agent and the curing agent, measurement of elapsed time by the elapsed time timer 22 is started (step S121). The obtained adhesive 4 is stored in the cylinder 5 of the discharge device 2. When the adhesive 4 is stored in the cylinder 5, the discharge control device 1 performs a process for specifying the third discharge condition (step S122). After this process is completed, the discharge control device 1 performs a discharge process on the substrate 16 (step S123).

  FIG. 11 is a flowchart for explaining in detail processing for specifying the third ejection condition. First, the control unit 23 refers to the elapsed time timer 22. When the elapsed time measured by the elapsed time timer 22 reaches 15 minutes, the control unit 23 extracts the first discharge condition associated with the elapsed time information “15 minutes” from the first condition storage unit 28 (step S130). ). The control unit 23 instructs the discharge device 2 to discharge the adhesive 4 at the discharge pressure included in the first discharge condition during the first discharge time included in the extracted first discharge condition (Step S23). S131). When the first discharge time has elapsed, the discharge amount of the adhesive 4 is detected based on the mass change notified from the mounting table 14. The control unit 23 subtracts the detected discharge amount of the adhesive 4 from the target amount of 0.45 g to calculate a difference amount (step S132). The control unit 23 determines whether or not the difference amount is within a predetermined range (step S133). Here, the predetermined range is a range such as within 0.01 g. If the difference amount is within the predetermined range, the condition determination unit 26 is notified of that fact. When the difference amount is out of the predetermined range, the difference information including the calculated difference amount is notified to the correction unit 24.

  The correction unit 24 that has received the difference information refers to the first condition storage unit 28 and acquires elapsed time information and a discharge amount characteristic corresponding to the elapsed time information. The correcting unit 24 calculates the second discharge time by multiplying the difference amount included in the difference information received from the control unit 23 by the reciprocal of the discharge speed indicated by the acquired discharge amount characteristic (step S134). Then, a second discharge condition including the second discharge time is generated. The correction unit 24 generates a second discharge condition for each of the elapsed time information stored in the first condition storage unit 28, and associates the generated 8 second discharge condition with the elapsed time information to associate with the second condition storage unit 30. Are sequentially stored (step S135). When the storage in the second condition storage unit 30 is completed, the correction unit 24 notifies the condition determination unit 26 that the storage is completed.

  The condition determination unit 26 that has received the notification that the storage has been completed from the correction unit 24 refers to the first condition storage unit 28 and the second condition storage unit 30 and refers to the first elapsed time information associated with the same elapsed time information. A discharge condition and a second discharge condition are extracted. Then, the third discharge time is acquired by adding the first discharge time included in the first discharge condition and the second discharge time included in the second discharge condition (step S136). In addition, when receiving a notification from the control unit 23 that the difference amount is within the predetermined range, the condition determination unit 26 extracts the first discharge condition stored in the first condition storage unit 28. Then, the first discharge time included in the first discharge condition is acquired as the third discharge time. The condition determining unit 26 generates a third discharge condition including the acquired third discharge time and the discharge pressure included in the extracted first discharge condition. The condition determination unit 26 stores the generated third ejection condition in the third condition storage unit 32 in association with the elapsed time information (step S137). The condition determination unit 26 generates a third discharge condition for each of the elapsed time information stored in the first condition storage unit 28, and associates the generated third discharge condition with the elapsed time, respectively, and a third condition storage unit 32. To store. When the storage in the third condition storage unit 32 ends, the condition determination unit 26 notifies the actual ejection unit 36 to that effect.

  FIG. 12 is a flowchart for explaining the discharge process for the substrate 16. First, the actual discharge unit 36 receives a notification from the condition determining unit 26 that the storage of the third discharge condition is complete. The actual discharge unit 36 that has received such notification refers to the elapsed time timer 22 and identifies the elapsed time. Then, the progress information indicating the specified elapsed time is searched from the third condition storage unit 32. The actual discharge unit 36 extracts the third discharge condition associated with the progress information from the third condition storage unit 32 (step S140). When the progress information indicating the specified elapsed time is not searched, the information indicating the time closest to the specified elapsed time is searched from the progress information stored in the third condition storage unit 32. And the 3rd discharge conditions matched with this progress information are extracted. The actual discharge unit 36 instructs the discharge device 2 to discharge the adhesive 4 with the discharge pressure included in the extracted third discharge condition during the third discharge time included in the extracted third discharge condition. (Step S141). When the discharge of the adhesive 4 by the discharge device 2 is completed, the substrate 16 is replaced. After the substrate 16 is replaced, the actual discharge unit 36 repeats a series of processes in steps S140 to S141. When the remaining amount of the adhesive 4 becomes very small, a series of processing from step S120 is repeated.

  FIG. 13 is a graph when the adhesive 4 is discharged using the first discharge condition stored in the first condition storage unit 28 without using the third discharge condition. That is, the actual discharge unit 36 extracts the first discharge condition from the first condition storage unit 28 based on the elapsed time measured by the elapsed time timer 22, and the discharge device 2 is included in the extracted first discharge condition. It is a graph at the time of discharging adhesive 4 with the discharge pressure included in the 1st discharge conditions for 1 discharge time. As shown in FIG. 13, in this case, although a substantially constant amount of the adhesive 4 can be discharged regardless of the elapsed time, the target amount of 0.45 g cannot always be discharged stably. . This is because even if the adhesive 4 has the same component, for example, if the production lot or the mixing condition of the main agent and the curing agent are different, the change in viscosity with the passage of time is different.

  FIG. 14 is a graph when the adhesive 4 is discharged in accordance with the flowcharts shown in FIGS. That is, as shown in FIG. 14, in this case, 0.45 g of the adhesive 4 can always be stably discharged.

  As described above, in the discharge control device 1 according to the present embodiment, the elapsed time information and the first discharge condition are stored in the first condition storage unit 28 before actually discharging the adhesive 4. After the storage, the control unit 23 extracts the first discharge condition from the first condition storage unit 28 based on the elapsed time measured by the elapsed time timer 22. Thereby, the first discharge condition can be acquired based on the measured elapsed time. After extracting the first discharge condition, the control unit 23 discharges the adhesive 4 to the discharge device 2 at the discharge pressure included in the first discharge condition for the first discharge time included in the first discharge condition. Instruct. The control unit 23 detects the discharge amount of the adhesive 4 at this time, and calculates the difference amount between the detected discharge amount and the target amount. Thereby, the shortage or excess of the discharge amount can be set as the difference amount.

  The correction unit 24 calculates the second discharge time by multiplying the difference amount calculated by the control unit 23 and the reciprocal of the discharge speed. Thereby, for example, it is possible to obtain a necessary time for additionally discharging the shortage or canceling the excess. Since the correction unit 24 acquires the second discharge condition including the second discharge time for each elapsed time information stored in the first condition storage unit 28, the second discharge condition and the elapsed time information may be associated with each other. it can.

  The condition determining unit 26 corrects the first discharge time included in the first discharge condition with the second discharge time included in the second discharge condition. The corrected time is set as a third discharge time, and a third discharge condition including the third discharge time is generated. Therefore, the target amount can be reliably discharged when discharged under the third discharge condition. Furthermore, the condition determination unit 26 specifies the third discharge condition for each elapsed time. Thereby, even if the viscosity of the adhesive 4 increases with time, if the third discharge condition corresponding to the elapsed time is extracted and the adhesive 4 is discharged according to the extracted third discharge condition Regardless of the elapsed time, the target amount of the adhesive 4 can be reliably and stably discharged. Therefore, even for a liquid whose viscosity increases with the passage of time, variations in the discharge amount can be suppressed.

  In the discharge control device 1 according to the present embodiment, information on the discharge time is included in all of the first discharge condition, the second discharge condition, and the third discharge condition. Therefore, the discharge amount of the adhesive 4 can be controlled by the discharge time. Further, by obtaining the second discharge time from the multiplication result of the reciprocal of the discharge speed of the adhesive 4 and the difference amount, the second discharge time can be set as a time for more accurately correcting the difference amount. . Since the third discharge condition includes a third discharge time based on the second discharge time, the target amount of the adhesive 4 can be discharged more reliably if the liquid is discharged according to the third discharge condition. .

  Moreover, in the discharge control apparatus 1 which concerns on this embodiment, the adhesive agent 4 obtained by mixing a main ingredient and a hardening | curing agent is discharged. Both the elapsed time indicated by the elapsed time information stored in the first condition storage unit 28 and the elapsed time measured by the elapsed time timer 22 are times measured immediately after mixing the main agent and the curing agent. Therefore, the difference between these two elapsed times can be reduced. Therefore, when extracting the 1st discharge conditions according to the elapsed time of adhesive 4 from the 1st condition storage part 28, a more suitable thing can be obtained. As a result, the target amount of adhesive 4 can be discharged more reliably.

  The preferred embodiments of the present invention have been described above, but the present invention is not necessarily limited to these embodiments.

  For example, in the present embodiment, the discharge amount is controlled by adjusting the discharge time. Instead of the discharge time, the discharge amount may be controlled by adjusting the discharge pressure.

  In this embodiment, the “predetermined amount” in the first discharge condition and the “target amount” in the third discharge condition are set to the same value, but they may be different. However, when the predetermined amount and the target amount are different, the difference amount calculated by the control unit 23 is larger than when the predetermined amount and the target amount are the same. Therefore, the second discharge time calculated by the correction unit 24 becomes long. In order to obtain an accurate third discharge time, it is desirable that the second discharge time is short. Therefore, it is more preferable to set the predetermined amount and the target amount to the same value.

It is a figure which shows the figure which shows the structure of a discharge system provided with the discharge control apparatus which concerns on this embodiment. It is a figure which shows the functional structure of a discharge control apparatus. It is a figure which shows the example of the information stored in the 1st condition storage part. It is a figure which shows the example of the information stored in the 2nd condition storage part. It is a figure which shows the example of the information stored in the 3rd condition storage part. It is a sequence diagram which shows the whole process in the discharge control apparatus which concerns on this embodiment. It is a flowchart for demonstrating in detail the process for acquiring 1st discharge conditions. It is a graph which shows the relationship between 1st discharge time and elapsed time. It is a graph which shows the relationship between discharge amount characteristic and elapsed time. It is a flowchart for demonstrating in detail the discharge process of an adhesive agent. It is a flowchart for demonstrating in detail the process for specifying a 3rd discharge condition. It is a flowchart for demonstrating the discharge process with respect to a board | substrate. It is a graph which shows the relationship between the discharge amount of an adhesive agent, and elapsed time. It is a graph which shows the relationship between the discharge amount of an adhesive agent, and elapsed time.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Discharge control apparatus, 2 ... Discharge apparatus, 4 ... Adhesive, 22 ... Elapsed time timer, 23 ... Control part, 24 ... Correction | amendment part, 26 ... Condition determination Part, 28 ... 1st condition storage part.

Claims (2)

A discharge control device for discharging a liquid whose viscosity increases over time,
Storage means in which elapsed time information indicating an elapsed time from a predetermined timing and a first discharge condition for discharging a predetermined amount of the liquid according to the elapsed time are stored in association with each other;
Measuring means for measuring the elapsed time;
Based on the elapsed time measured by the measuring means, the first discharge condition associated with the elapsed time information indicating the elapsed time is extracted from the storage means, and the first discharge condition is extracted based on the extracted first discharge condition. A calculation means for calculating a difference amount between a discharge amount and a target amount when the liquid is actually discharged;
A second discharge condition for correcting the difference amount is stored in the storage unit based on the difference amount calculated by the calculation unit and the discharge amount characteristic of the liquid according to the elapsed time. Correction means for determining each elapsed time information;
Based on the second discharge condition determined by the correction means and the first discharge condition stored in the storage means, a third discharge condition for discharging a target amount of the liquid is stored in the storage means. Identifying means for identifying each elapsed time information,
Equipped with a,
The first discharge condition includes a first discharge time,
The liquid discharge amount characteristic is a reciprocal of the liquid discharge speed obtained from the first discharge time and the target amount,
The second discharge condition includes a second discharge time obtained from a multiplication result of the difference amount and the reciprocal of the discharge speed of the liquid,
The discharge control device according to claim 3, wherein the third discharge condition includes a third discharge time based on the first discharge time and the second discharge time . The liquid is an adhesive obtained by mixing a main agent mainly composed of a curable composition and a curing agent mainly composed of a curing accelerator,
The discharge control apparatus according to claim 1 , wherein the predetermined timing is immediately after mixing the main agent and the curing agent.

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