JP6811570B2 - Material discharge control device - Google Patents

Description

The present invention relates to a material discharge control device that discharges a material in a container.

Conventionally, a liquid coating device including a syringe that discharges a liquid stored inside by pressurizing from one opening is disclosed (see Patent Documents 1 and 2). The liquid coating apparatus described in Patent Documents 1 and 2 was replaced with a new syringe before the liquid in the syringe was used up in order to stably apply the liquid in the syringe. Therefore, the liquid coating apparatus described in Patent Documents 1 and 2 measures the amount of liquid in the syringe and obtains the replacement time.

Japanese Patent No. 3863231 Japanese Patent No. 5239357

However, in the liquid coating devices described in Patent Documents 1 and 2, the liquid may remain in the syringe at the time of replacement. The remaining liquid had to be discarded, which was wasted.

An object of the present invention is to provide a material discharge control device capable of detecting that a member pressing a material in a container has reached the bottom surface and reducing the material remaining in the container.

The material discharge control device according to the embodiment of the present invention is
A base that supports a container filled with material,
A moving portion that moves with respect to the base and presses to discharge the material in the container,
The drive unit that drives the moving unit and
A detection unit that detects the position of the moving unit and
A control unit that controls the drive unit according to the position of the moving unit detected by the detection unit.
With
The control unit
The estimated movement change rate of the moving part determined in advance and the measured movement change rate of the moving part obtained from the position of the moving part detected by the detection unit are calculated, and the measured movement with respect to the estimated movement change rate is calculated. Find the ratio that represents the rate of change
When the ratio is out of a predetermined range determined in advance, it is determined that the member pressing the material in the container has reached the bottom surface, and the driving of the driving unit is stopped.

In the material discharge control device according to the embodiment of the present invention,
The control unit
It is characterized in that the driving of the driving unit is stopped and an alarm or warning is issued.

In the material discharge control device according to the embodiment of the present invention,
The moving part
An elevating part that can be raised and lowered with respect to the base
A lid member supported by the elevating part and placed on the material in the container,
It is characterized by having.

The material discharge control device according to the embodiment of the present invention is
A first pump attached to the lid member and driving the drive unit to suck up the material in the container.
A hose through which the material sucked up from the first pump passes,
A coating part that discharges the material that has passed through the hose, and
With
The drive unit
It is characterized by having a first drive unit for driving the first pump.

In the material discharge control device according to the embodiment of the present invention,
The coating part
A second pump that feeds the material in the hose,
A nozzle for applying the material sent by the second pump and
Have,
The drive unit
It is characterized by having a second drive unit for driving the second pump.

According to the material discharge control device according to the embodiment of the present invention, it is possible to accurately detect that the member that pressurizes the material in the container has reached the lower limit and reduce the material remaining in the container.

The material discharge control apparatus of the 1st Embodiment which concerns on this invention is shown. The state in which the lid member 5 of the material discharge control device 1 of the first embodiment has reached the lower limit position is shown. It is a control flowchart of the material discharge control device 1 of 1st Embodiment. It is a graph which shows the relationship of the position of the elevating part 3 with respect to time of the material discharge control device 1 of 1st Embodiment. The material discharge control apparatus of the 2nd Embodiment which concerns on this invention is shown. The state in which the lid member 5 of the material discharge control device 1 of the second embodiment has reached the lower limit position is shown.

Hereinafter, the material discharge control device 1 of the embodiment according to the present invention will be specifically described with reference to the drawings.

FIG. 1 shows the material discharge control device 1 of the first embodiment according to the present invention. FIG. 2 shows a state in which the elevating portion 4 of the material discharge control device 1 of the first embodiment has reached the lower limit position.

The material discharge control device 1 of the first embodiment includes a base 2, a support portion 3 that extends above and below the base 2, an elevating portion 4 that is mounted on the support portion 3 and elevates and elevates, and is supported by the elevating portion 4. A lid member 5 to be placed on the material in the container 30, a first pump 6 attached to the lid member 5 to suck up the material in the container 30, a first drive unit 7 for driving the first pump 6, and a first pump. The position of the hose 8 through which the material sucked up from 6 passes, the coating unit 9 for discharging the material passing through the hose 8, the detection unit 10 for detecting the position of the elevating unit 4, and the position of the elevating unit 4 detected by the detection unit 10. A control unit 20 that controls the first drive unit 7 and the coating unit 9 according to the above is provided. The elevating part 4 and the lid member 5 form a moving part.

The base 2 is provided with support portions 3 on both sides, and has a portion in which the container 30 is placed in the central portion. The container 30 has an opening 30a above and a bottom surface 30b below. The inside of the container 30 is filled with a material and sealed by a lid member 5 inserted inside through the upper opening 30a. As the container 30, a pail can, a syringe, or the like is used.

The support portion 3 has a support cylinder 3a fixed to the base 2 and a support rod 3b having one end fixed to the elevating portion 4 and the other end movable in the support cylinder 3a. The support rod 3b moves together with the elevating part 4.

Both sides of the elevating portion 4 are supported by the supporting portion 3, and the lid member 5, the first pump 6, and the first driving portion 7 are supported below the central portion. When the first drive unit 7 is driven and the material in the container 30 is sucked up by the first pump 6, the elevating unit 4 descends together with the lid member 5. Then, when the first drive unit 7 stops, the lowering of the elevating unit 4 also stops.

The lid member 5 is supported by the elevating portion 4 and is placed on the upper surface of the material filled inside the container 30. The lid member 5 is formed with a through hole (not shown) leading to the first pump 6. When a molten thermoplastic material is used as the material, a heating platen having a built-in heater is used as the lid member 5. The molten thermoplastic material in the container 30 is melted by the heater of the lid member 5 and sucked up by the first pump 6.

The first pump 6 is attached above the lid member 5. The first drive unit 7 is attached above the first pump 6 via a transmission member 7a. Then, the lid member 5, the first pump 6, and the first drive unit 7 are supported by the elevating part 4 and move up and down together with the elevating part 4.

The coating portion 9 is connected to the pump 6 via a hose 8. The coating unit 9 has a second pump 9a that sucks the material in the hose 8, a second driving unit 9b that drives the second pump 9a, and a nozzle 9c that discharges the material that has passed through the second pump 9a. ..

When the first drive unit 7 and the second drive unit 9b are driven and the first pump 6 sucks up the material in the container 30, the lid member 5 is lowered. In other words, the lid member 5 presses the material in the container 30. The container 30 is pre-filled with a material, and when the material is exhausted, the container 30 is replaced with a new container 30. The first drive unit 7 and the second drive unit 9b form a drive unit.

The detection unit 10 detects the position of the elevating unit 4. The detection unit 10 has a detection cylinder 10a fixed to the support cylinder 3a, and a detection rod 10b having one end fixed to the elevating part 4 and the other end movable in the detection cylinder 10b. The detection rod 10b moves together with the elevating part 4. The detection unit 10 detects the position of the detection rod 10b with respect to the detection cylinder 10a. The position of the detection rod 10b with respect to the detection cylinder 10a detected by the detection unit 10 is transmitted to the control unit 20.

The control unit 20 controls the pressurizing first drive unit 7 and the second drive unit 9b according to the detection signal sent from the detection unit 10.

Here, specific control will be described with reference to a flowchart.

FIG. 3 is a control flowchart of the material discharge control device 1 of the first embodiment.

First, in step 1, the elevating part 4 is set to the initial position (ST1). The initial position of the elevating part 4 is a position where the upper surface of the material in the container 30 and the lower surface of the lid member 5 become the same after the container 30 is placed on the base 2 of the material discharge control device 1.

Next, in step 2, the drive unit is driven (ST2). Specifically, it drives the first drive unit 7 and the second drive unit 9b. When the drive unit is driven, the first pump 6 and the second pump 9a are operated. When the first pump 6 and the second pump 9a are operated, the material in the container 30 is sucked up and the lid member 5 is moved. In other words, the lid member 5 presses the material in the container 30. The sucked-up material is discharged from the nozzle 9c of the coating unit 9.

Subsequently, in step 3, the position of the elevating unit 4 detected by the detection unit 10 is input to the control unit 20 (ST3). The detection unit 10 detects the position of the detection rod 10b with respect to the detection cylinder 10a and inputs the position to the control unit 20.

Next, in step 4, the control unit 20 represents the actually measured movement change rate b of the elevating unit 4 obtained from the position of the elevating unit 4 detected by the detection unit 10 with respect to the estimated movement change rate a of the elevating unit 4 determined in advance. The ratio b / a is calculated (ST4). The estimated movement change rate a of the elevating unit 4 is calculated and stored in advance from the amount of material sucked up with respect to the driving force of the first driving unit 7 and the second driving unit 9b.

Subsequently, in step 5, the control unit 20 determines whether or not the ratio b / a representing the actually measured movement change rate b with respect to the estimated movement change rate a is within a predetermined range (ST5). The ratio b / a representing the measured movement change rate b with respect to the estimated movement change rate a is usually 1.

In step 5, if the ratio b / a representing the actually measured movement change rate b with respect to the estimated movement change rate a is within a predetermined range, the process returns to step 3. In step 5, if the ratio b / a representing the actually measured movement change rate b to the estimated movement change rate a is out of a predetermined range, the process proceeds to step 6. The predetermined range is, for example, 0.95 ≦ b / a ≦ 1.05.

In step 6, the control unit 20 stops driving the first drive unit 7 and the second drive unit 9b (ST6). If the driving of the first driving unit 7 and the second driving unit 9b is not stopped and is driven as it is, the first pump 6 and the second pump 9a are seized and damaged.

FIG. 4 is a graph showing the relationship between the position of the elevating unit 4 and the time of the material discharge control device 1 of the first embodiment.

As shown in FIG. 4, the elevating part 4 descends from the initial position at a predetermined estimated movement change rate a. Then, as shown in FIG. 2, when the lower end of the lid member 5 reaches the bottom surface 30b of the container 30, the elevating portion 4 cannot descend and stays at the stop position. Therefore, the actually measured movement change rate b detected by the detection unit 10 becomes close to 0, and the ratio b / a representing the actually measured movement change rate b with respect to the estimated movement change rate a is out of a predetermined range. Therefore, the control unit 20 can determine that the material in the container 30 does not exist.

The control unit 20 may be set to stop driving the drive unit 7 when the actually measured movement change rate b becomes 0. In addition, an alarm sound may be sounded or a warning light may be turned on.

As described above, according to the material discharge control device 1 of the first embodiment, it is stably detected that the moving portions 4 and 5 on the material in the container 30 have reached the lower limit, and the dimensions of the container 30 vary. Even if there is, it is possible to reduce the material remaining in the container 30.

FIG. 5 shows the material discharge control device 51 of the second embodiment according to the present invention. FIG. 6 shows a state in which the elevating portion 54 of the material discharge control device 51 of the second embodiment has reached the lower limit position.

The material discharge control device 51 of the second embodiment is supported on the base 52, the support portion 53 extending above the base 52, the elevating part 54 that can be raised and lowered, and the material in the container 80 supported by the elevating part 54. The lid member 55 to be placed, the drive unit 57 for driving the elevating unit 54, the detection unit 60 for detecting the position of the elevating unit 54, and the drive unit 57 are controlled according to the positions of the elevating unit 54 detected by the detection unit 60. It includes a control unit 70.

The base 52 is provided with support portions 53 on both sides, and supports the container 80 in the central portion. The container 80 has an opening 80a above and a coating portion 80b below. The material filled inside the container 80 is pressed by the lid member 55 inserted inside through the upper opening 80a, and is applied from the coating portion 80b.

The support portion 53 has a support column 53a fixed to the base 52 and a support plate 53b supported by the support column 53a.

A lid member 55 is attached to the lower part of the elevating part 54. The elevating unit 54 is elevated and lowered by the drive unit 57. When the drive unit 57 is driven, the elevating unit 54 descends together with the lid member 55. Then, when the drive unit 57 stops, the lowering of the elevating unit 54 also stops. The drive unit 57 is preferably an actuator that reciprocates, such as a fluid pressure cylinder that expands and contracts. In particular, the drive unit 57 preferably does not expand or contract when the load resistance exceeds a predetermined range.

The lid member 55 is attached to the elevating portion 54 and is placed on the upper surface of the material filled inside the container 80. When the drive unit 57 is driven, the lid member 55 descends together with the elevating unit 54 and presses the material inside the container 80.

The detection unit 60 detects the position of the elevating unit 54. The detection unit 60 has a detection cylinder 60a fixed to the base 52, and a detection rod 60b having one end fixed to the elevating part 54 and the other end movable in the detection cylinder 60b. The detection rod 60b moves together with the elevating part 54. The detection unit 60 detects the position of the detection rod 60b with respect to the detection cylinder 60a. The position of the detection rod 60b with respect to the detection cylinder 60a detected by the detection unit 60 is transmitted to the control unit 70.

The control unit 70 controls the drive unit 57 in response to the detection signal sent from the detection unit 60.

Subsequently, specific control will be described with reference to a flowchart. Since the control flowchart of the material discharge control device 51 of the second embodiment is basically the same as that of the first embodiment, it will be described with reference to FIG.

First, in step 1, the elevating part 54 is set to the initial position (ST1). The initial position of the elevating portion 54 is a position where the upper surface of the material in the container 80 and the lower surface of the lid member 55 become the same after the container 80 is set on the base 2 of the material discharge control device 51.

Next, in step 2, the drive unit 57 is driven (ST2). When the drive unit 57 is driven, the actuator 57a operates. When the actuator 57a is activated, the lid member 55 moves. When the lid member 55 moves, the material in the container 80 is pressed and discharged from the discharge port 80b.

Subsequently, in step 3, the position of the elevating unit 54 detected by the detection unit 60 is input to the control unit 70 (ST3). The detection unit 60 detects the position of the detection rod 60b with respect to the detection cylinder 60a and inputs the position to the control unit 70.

Next, in step 4, the control unit 70 represents the actually measured movement change rate b of the elevating unit 54 obtained from the position of the elevating unit 54 detected by the detection unit 60 with respect to the estimated movement change rate a of the elevating unit 54 determined in advance. The ratio b / a is calculated (ST4). The estimated movement change rate of the elevating unit 54 is calculated and stored in advance from the amount of movement of the elevating unit 54 with respect to the driving force of the driving unit 57.

Subsequently, in step 5, the control unit 70 determines whether or not the ratio b / a representing the actually measured movement change rate b with respect to the estimated movement change rate a is within a predetermined range (ST5). The ratio b / a representing the measured movement change rate b with respect to the estimated movement change rate a is usually 1.

In step 5, if the ratio b / a representing the actually measured movement change rate b with respect to the estimated movement change rate a is within a predetermined range, the process returns to step 3. In step 5, if the ratio b / a representing the actually measured movement change rate b to the estimated movement change rate a is out of a predetermined range, the process proceeds to step 6. The predetermined range is, for example, 0.95 ≦ b / a ≦ 1.05.

In step 6, the control unit 70 stops driving the drive unit 57 (ST6).

As shown in FIG. 4, the elevating portion 54 descends from the initial position at a predetermined estimated movement change rate a. Then, as shown in FIG. 6, when the lower end of the lid member 55 reaches the bottom surface of the container 80, the elevating portion 54 cannot descend and stays at the stop position. Therefore, the actually measured movement change rate b detected by the detection unit 60 becomes close to 0, and the ratio b / a representing the actually measured movement change rate b with respect to the estimated movement change rate a is out of a predetermined range. Therefore, the control unit 70 can determine that the material in the container 80 does not exist.

The control unit 70 may be set to stop driving the drive unit 57 when the actually measured movement change rate b becomes 0. In addition, an alarm sound may be sounded or a warning light may be turned on.

As described above, according to the material discharge control device 51 of the first embodiment, it is stably detected that the moving portions 54 and 55 on the material in the container 80 have reached the lower limit, and the dimensions of the container 80 vary. Even if there is, it is possible to reduce the material remaining in the container 80.

As described above, according to the material discharge control devices 1 and 51 of the present embodiment, the bases 2 and 52 that support the containers 30 and 80 filled with the material and the containers 30 that move with respect to the bases 2 and 52. Detects the positions of the moving parts 4, 5, 54, 55 that press the material in 80, the driving parts 7, 57 that drive the moving parts 4, 5, 54, 55, and the moving parts 4, 5, 54, 55. The control unit is provided with the detection units 10, 60 and the control units 20, 70, which control the drive units 7, 57 according to the positions of the moving units 4, 5, 54, 55 detected by the detection units 10, 60. Reference numerals 20 and 70 are the estimated movement change rate a of the moving parts 4, 5, 54, 55 determined in advance, and the moving parts obtained from the positions of the moving parts 4, 5, 54, 55 detected by the detection units 10, 60. The measured movement change rate b of 4, 5, 54, 55 is calculated to obtain the ratio b / a representing the measured movement change rate b with respect to the estimated movement change rate a, and the ratio b / a is outside the predetermined range. In the case of, since the drive of the drive units 7, 57 is stopped, it is stably detected that the moving parts 4, 5, 54, 55 on the material in the container have reached the lower limit, and the dimensions of the container vary. However, it is possible to reduce the amount of material remaining in the container.

Further, according to the material discharge control devices 1, 51 of the present embodiment, when the ratio b / a is out of a predetermined range predetermined and the measured movement change rate b becomes 0, the control units 20 and 70 are used. Since the driving of the driving units 7, 57 is stopped, it becomes possible to more accurately detect that the moving units 4, 5, 54, 55 on the material in the container have reached the lower limit.

Further, according to the material discharge control devices 1, 51 of the present embodiment, the control units 20 and 70 stop the driving of the drive units 7 and 57 and issue an alarm or a warning, so that the movement on the material in the container is performed. It is possible to notify the surroundings that parts 4, 5, 54, and 55 have reached the lower limit.

Further, according to the material discharge control devices 1, 51 of the present embodiment, the moving portions 4, 5, 54, 55 have an elevating portion 4, 54 that can be raised and lowered with respect to the bases 2, 52, and the elevating portion 4, Since the lid members 5, 55 supported by the 54 and placed on the materials in the containers 30 and 80 are provided, the degree of freedom in design can be increased.

Further, according to the material discharge control device 1 of the present embodiment, the first pump 6 that is attached to the lid member 5 and is driven by the drive unit 7 to suck up the material in the container 30 and the material that is sucked up from the first pump 6. A hose 8 through which the pump 6 passes and a coating unit 9 for discharging the material passing through the hose 8 are provided, and the drive unit 7 has a first drive unit 7 for driving the first pump 6, so that the material is exhausted and the first drive unit 7 is used. 1 It is possible to prevent the pump 6 from being damaged by baking or the like.

Further, according to the material discharge control device 1 of the present embodiment, the coating unit 9 has a second pump 9a for feeding the material in the hose 8 and a nozzle 9c for coating the material sent by the second pump 9a. Since the drive unit 7 has the second drive unit 9b that drives the second pump 9a, it is possible to prevent the material from being exhausted and the second pump 9a from being damaged by seizure or the like.

Although various embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and embodiments configured by appropriately combining the configurations of the respective embodiments are also within the scope of the present invention. It is a thing.

1,51 ... Material discharge control device 2,52 ... Base 3,53 ... Support part 4,54 ... Elevating part (moving part)
5,55 ... Lid member (moving part)
6 ... 1st pump 7 ... 1st drive unit (drive unit)
8 ... Hose 9 ... Coating part 9a ... Second pump 9b ... Second drive part (drive part)
9c ... Nozzles 10, 60 ... Detection units 20, 70 ... Control units 30, 80 ... Container 57 ... Drive unit

Claims (5)

A base that supports a container filled with material,
A moving portion that moves with respect to the base and presses to discharge the material in the container,
The drive unit that drives the moving unit and
A detection unit that detects the position of the moving unit and
A control unit that controls the drive unit according to the position of the moving unit detected by the detection unit.
With
The control unit
The estimated movement change rate of the moving part determined in advance and the measured movement change rate of the moving part obtained from the position of the moving part detected by the detection unit are calculated, and the measured movement with respect to the estimated movement change rate is calculated. Find the ratio that represents the rate of change
A material discharge control device characterized in that when the ratio is out of a predetermined range determined in advance, it is determined that the member pressing the material in the container has reached the bottom surface, and the driving of the driving unit is stopped. The control unit
The material discharge control device according to claim 1, wherein the drive of the drive unit is stopped and an alarm or a warning is issued. The moving part
An elevating part that can be raised and lowered with respect to the base
A lid member supported by the elevating part and placed on the material in the container,
The material discharge control device according to claim 1 or 2, wherein the material discharge control device is provided. A first pump attached to the lid member and driving the drive unit to suck up the material in the container.
A hose through which the material sucked up from the first pump passes,
A coating part that discharges the material that has passed through the hose, and
With
The drive unit
The material discharge control device according to claim 3, further comprising a first drive unit for driving the first pump. The coating part
A second pump that feeds the material in the hose,
A nozzle for applying the material sent by the second pump and
Have,
The drive unit
The material discharge control device according to claim 4, further comprising a second drive unit for driving the second pump.

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