KR102236209B1 - Apparatus for screwing on and off a bottle cap and chemical sampling apparatus including the same - Google Patents

Abstract

An embodiment of the present invention discloses a lid opening and closing device and a chemical sampling device including the same, comprising: a holder module for fixing a container; and a detachable module for removing the lid from the container or fastening the lid to the container, wherein the container includes a first screw thread, the lid includes a second screw thread coupled to the first screw thread, and the detachment module includes a gripper coupled to the lid, a rotating unit for rotating the gripper, a lifting unit for moving the gripper in a vertical direction, and a buffer unit for lifting the gripper together with the lid when the second thread is separated from the first thread and the lid is lifted.

Description

Lid opening and closing device and chemical sampling device including the same {APPARATUS FOR SCREWING ON AND OFF A BOTTLE CAP AND CHEMICAL SAMPLING APPARATUS INCLUDING THE SAME}

The embodiment relates to a lid opening and closing device and a chemical sampling device including the same.

Companies that deal with chemicals that are harmful to the human body, for example, companies that manufacture semiconductors, LCDs, OLEDs, pharmaceuticals, etc., or companies that manufacture chemicals such as paint companies, use various types of chemicals in one or more unit processes. have.

In general, chemicals are supplied to the main storage tank through a tank lorry, and some of the chemicals stored in the main storage tank are divided and stored in a plurality of sub storage tanks, so that they are sequentially supplied to one unit process or individually Can be supplied.

As another example, if the chemical is small or if the tank lorry cannot be used due to the characteristics of the chemical itself, it may be directly supplied to the sub storage tank through a drum or a bottle.

If chemicals are contaminated in tank lorries, drums, bottles, storage tanks, piping, etc., defects may occur in the unit process receiving them.

Therefore, the degree of chemical contamination needs to be managed at an appropriate level for each major location such as tank lorries, drums, bottles, storage tanks, and pipes, and accordingly, a sampling device capable of sampling chemicals at major locations has been developed.

The conventional sampling apparatus includes a sampling booth, a plurality of sampling lines each connected to a plurality of main locations to supply chemicals to a sampling bottle stored in the sampling booth, and valves respectively installed in the plurality of sampling lines.

The operator could perform the sampling operation as follows using a conventional sampling device.

For example, the operator directly opens the cap of the sampling bottle, puts the sampling bottle into the sampling booth, and operates the valve of the sampling line connected to the main location to be sampled to fill the sampling bottle with chemicals, and the sampling bottle filled with chemicals is placed in the sampling booth. After collection at the site, the cap of the sampling bottle was closed and transported to the chemical contamination analysis site.

As described above, most of the sampling work is generally performed by an operator's manual labor.

Therefore, there was a problem that chemical contamination was likely to occur due to the carelessness of the worker during the sampling operation, and there was also a problem that the worker was likely to be exposed to chemicals. These problems are particularly likely to occur when the operator directly opens and closes the cap of the sampling bottle.

In order to improve this, a device for automatically opening and closing the lid of a sampling bottle has been developed, but there is a problem in that the lid opening device presses the sampling bottle while the lid opening device opens the lid of the sampling bottle, and the shape is deformed.

In addition, there may be a risk that the chemical is exposed to the outer surface of the sampling bottle during the process of putting the chemical into the sampling bottle, but there is no system that can prevent such an accident in advance.

The embodiment provides a lid opening and closing device for preventing damage to a sampling bottle when opening and closing a container, and a chemical sampling device including the same.

In addition, it provides a lid opening and closing device capable of detecting when chemicals are exposed to the container, and a chemical sampling device including the same.

The problems to be solved in the embodiments are not limited thereto, and the objectives and effects that can be grasped from the solutions or embodiments of the problems described below are also included.

Lid opening and closing device according to one feature of the present invention, a holder module for fixing the container; And a detachable module for separating the lid from the container or fastening the lid to the container, wherein the container includes a first thread, and the lid includes a second thread coupled with the first thread, and the detachment The module includes: a grip portion coupled to the lid; A rotating part that rotates the gripping part; An elevating part for moving the gripping part in an up-down direction; And a buffer unit for raising the gripping unit together with the cap when the second thread is separated from the first thread and the cap is raised.

Lid opening and closing method according to an aspect of the present invention, the steps of fixing the container; Separating the lid coupled to the container; And coupling the lid to the container, wherein the step of separating the lid coupled to the container separates the lid from the container by rotating the gripping portion of the detachable module coupled to the lid, and the second lid of the lid When the screw thread is separated from the first thread of the container and the lid is raised, the gripping portion is also raised together with the lid.

A chemical sampling device according to one aspect of the present invention includes a case in which a container to which a lid is fastened is accommodated; A lid opening and closing device separating or fastening the container and the lid; And a sampling line for filling chemicals into the container from which the lid is separated, wherein the lid opening/closing device comprises: a holder module fixing the container; And a detachable module for separating the lid from the container or fastening the lid to the container, wherein the container includes a first thread, and the lid includes a second thread coupled with the first thread, the Detachable module, a gripping portion for gripping the lid; A rotating part that rotates the gripping part; An elevating part for moving the gripping part in an up-down direction; And a buffer unit for raising the gripping unit together with the cap when the second thread is separated from the first thread and the cap is raised.

According to an embodiment, by providing a means for rotating and vertically transferring the cap holding portion, it is possible to prevent damage to the container when the lid is removed from the container or the lid is recombined to the container.

In addition, when chemicals are exposed to the container, it is possible to detect and warn the worker, thereby preventing accidents in which the worker is exposed to the chemical.

Various and beneficial advantages and effects of the present invention are not limited to the above description, and will be more easily understood in the course of describing specific embodiments of the present invention.

1 is a diagram of a chemical storage facility,
2 is a conceptual diagram of a chemical sampling apparatus according to an embodiment of the present invention,
3 is a view showing a state in which the lid opening and closing device is coupled to the lid,
4 is a view showing a state in which the lid is raised from the container by the lid opening and closing device,
5 is a view showing a state in which the lid is separated from the container by the lid opening and closing device,
6 is a view showing a state in which the lid opening and closing device is raised,
7 is a diagram showing a process of putting a chemical in a container,
8 is a view showing a state in which the lid is coupled to the container,
9 is a view showing a state in which the container has moved to the waiting area,
10 is a cross-sectional view of the detachable module,
11 is an enlarged view of the buffer unit,
12 is a view showing the height at which the detachable module moves up and down together with the lid by the buffer unit,
13 is a view showing the height at which the modified detachable module moves up and down together with the lid,
14 is a conceptual diagram of a holder module,
15 is a view showing a second detection sensor disposed on the holder module,
16 is a conceptual diagram of a second detection sensor,
17 is a flowchart illustrating a sampling method according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the technical idea of the present invention is not limited to some embodiments to be described, but may be implemented in a variety of different forms, and within the scope of the technical idea of the present invention, one or more of the components may be selectively selected between the embodiments. It can be combined with and substituted for use.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention are generally understood by those of ordinary skill in the art, unless explicitly defined and described. It can be interpreted as a meaning, and terms generally used, such as terms defined in a dictionary, may be interpreted in consideration of the meaning in the context of the related technology.

In addition, terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention.

In the present specification, the singular form may also include the plural form unless specifically stated in the phrase, and when described as “at least one (or more than one) of A and (and) B and C”, it is combined with A, B, and C. It may contain one or more of all possible combinations.

In addition, terms such as first, second, A, B, (a), (b) may be used in describing the constituent elements of the embodiment of the present invention.

These terms are only for distinguishing the component from other components, and are not limited to the nature, order, or order of the component by the term.

And, when a component is described as being'connected','coupled' or'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also the component and It may also include a case of being'connected','coupled' or'connected' due to another element between the other elements.

In addition, when it is described as being formed or disposed on the “top (top) or bottom (bottom)” of each component, the top (top) or bottom (bottom) is not only when the two components are in direct contact with each other, but also one It also includes a case in which the above other component is formed or disposed between the two components. In addition, when expressed as “upper (upper) or lower (lower)”, the meaning of not only an upward direction but also a downward direction based on one component may be included.

1 is a diagram of a chemical storage facility.

Referring to FIG. 1, the chemical storage facility 1 includes an ACQC unit 2, a first chemical storage tank 3, a chemical distribution device 4, and a plurality of second chemical storage tanks 5 and 6 I can.

The ACQC unit (Automatic Clean Quick Coupler Unit) (2) can deliver the chemicals supplied from the tank lorry to the first chemical storage tank (3), and the chemical distribution device (4) is the chemical stored in the first chemical storage tank (2). Some of them may be divided and supplied to a plurality of second chemical storage tanks (3, 4).

The chemical sampling device 10 may be connected to a plurality of chemical storage tanks 3, 5, and 6 through a plurality of sampling lines L1, L2, and L3.

In this embodiment, the sampling line (L1, L2, L3) is described as being connected to the chemical storage tank, but is not necessarily limited to this, and supplies and stores chemicals such as tank lorries, drums, bottles, storage tanks, pipes, etc. Or it can be connected to any kind of chemical source you're transporting.

In addition, although three sampling lines L1, L2, and L3 are shown, they are not necessarily limited thereto, and may be one, two, or four or more depending on the number of chemical supply sources.

An on-off valve V and a pump P may be installed in each of the plurality of sampling lines L1, L2, and L3.

The pump (P) is for transporting chemicals through the sampling lines (L1, L2, L3), but is not limited thereto, and the chemical of the chemical source is sampled by supplying gas, for example, nitrogen or air to the chemical source. It may also include a gas supply device to be conveyed through the lines (L1, L2, L3).

2 is a conceptual diagram of a chemical sampling apparatus according to an embodiment of the present invention.

2, the chemical sampling device according to the embodiment includes a case 100 in which a container 21 to which a lid 22 is fastened is accommodated, a lid opening and closing device for separating or fastening the container 21 and the lid 22 (300, 22), and the lid 22 may include a sampling line (L1, L2, L3) for filling the chemical into the separated container (21).

The container 21 may be a sampling bottle capable of extracting a part of the chemical, but is not limited thereto. Exemplarily, the container may be a drum in which a large amount of chemicals are stored. Hereinafter, it will be described as an exemplary sampling bottle.

The case 100 may be divided into a waiting space 100a and a working space 100b by a shielding door 102. The waiting space 100a may be a space in which an operator accommodates the sampling bottle 21. In addition, the working space 100b may be a space in which the lid 22 of the sampling bottle 21 is opened and chemicals are stored.

According to the embodiment, since the waiting space 100a and the working space 100b are partitioned by the shielding door 102, it is possible to suppress the chemical fume generated during the sampling operation from being discharged to the outside.

However, the present invention is not limited thereto, and the working space 100b may be divided into a plurality of pieces. For example, a shielding door may be additionally installed between the area in which the lid opening and closing device is disposed and the area in which the plurality of sampling lines L1, L2, and L3 are disposed. In this case, it is possible to more effectively suppress the discharge of chemical fumes to the outside.

When the operator opens the door 103 and places the empty sampling bottle 21 in the waiting space 100a and operates the device, the holder module 220 transfers the sampling bottle 21 to the lower portion of the gripping unit 310. I can. The holder module 220 may move in the transverse direction along the moving line 104, but is not limited thereto.

During the initial operation, the holder module 220 may be disposed in the waiting space 100a. Accordingly, the operator can insert the sampling bottle 21 into the holder of the holder module 220 and perform the sampling operation. However, the initial position of the holder module is not limited thereto.

Detachable module 300 may include a gripping portion 310 coupled to the lid 22, a rotating portion 320 for rotating the gripping portion 310, and an elevating portion 330 for elevating the gripping portion 310. have. According to an embodiment, the rotating part 320 and the lifting part 330 are disposed outside the case 100 to prevent the penetration of chemical fumes generated during the sampling operation.

The cover 381 may be coupled to the upper portion of the case 100 and may be formed in an expandable tubular shape to surround the through hole formed in the case 100. For example, the cover 381 may be a corrugated pipe. Therefore, it is possible to suppress the entry of the chemical fume through the through hole of the case 100.

Figure 3 is a view showing a state in which the lid opening and closing device is coupled to the lid, Figure 4 is a view showing a state in which the lid is raised from the container by the lid opening and closing device.

Referring to FIG. 3, when the sampling bottle 21 is disposed under the detachable module 300, the gripping part 310 may descend and be coupled to the lid 22. The configuration in which the gripper 312 of the gripping portion 310 is unfolded is not particularly limited. As an example, various gripper structures of robot arms can be applied without limitation.

At this time, the plate member 318 disposed on the gripping part 310 may be prevented from lowering the gripping part 310 than the lid 22 by contacting the upper surface of the lid 22. In addition, since the plate member 318 presses the lid 22, the problem of not properly closing the gripper 312 due to the slip phenomenon of the gripper 312 when the gripper 310 rotates and descends can be improved.

The plate member 318 may press the lid 22 by an elastic member such as a spring, but is not limited thereto. For example, the plate member 318 may have an elastic force using magnetic force.

The rotating part 320 may transmit a rotational force to the gripping part 310 to separate the lid 22 from the sampling bottle 21. The rotating part 320 may include a motor, but is not limited thereto. For example, the rotation unit 320 may transmit rotational force by a cylinder. That is, the configuration of the rotation unit 320 is not particularly limited as long as it is a configuration capable of transmitting rotational force to the gripping unit 310.

Referring to FIG. 4, a first thread 21a is formed in the injection port 21-1 of the sampling bottle 21 to be coupled with the second thread 22a of the lid 22. When the gripper 312 of the gripper 310 is rotated after holding the lid 22, the first thread 21a and the second thread 22a are separated, and in this process, the second thread 22a becomes the first thread. It is pushed up by (21a). Accordingly, the lid 22 gradually rises from the sampling bottle 21.

When the lid 22 rises from the sampling bottle 21 by rotation, if the weight of the detachable module 300 is transferred to the lid 22 as it is, the lid 22 does not rise any more and the first thread 21a The formed sampling bottle 21 may be pressed. Accordingly, the shape of the sampling bottle 21 may be modified.

The sampling bottle 21 is standardized in materials and shapes to accommodate chemicals, and the strength may not be relatively high. In particular, the strength of the injection port 21-1 of the sampling bottle 21 may be weaker. Therefore, when the weight of the detachable module 300 is transferred to the sampling bottle 21 through the lid 22 as it is, the injection port 21-1 may be crushed.

When deformation occurs in the injection port 21-1, the chemical may not be normally filled into the sampling bottle 21 through the injection port 21-1, but may be exposed to the outside. Therefore, the configuration of separating the lid 22 without changing the shape of the sampling bottle 21 may be very important.

Figure 5 is a view showing a state in which the lid is separated from the container by the lid opening and closing device, Figure 6 is a view showing a state in which the lid opening and closing device is raised.

Referring to FIG. 5, the buffer unit 350 prevents the detachment module 300 from excessively pressing the lid 22, so that when the lid 22 rises, the gripper 310 can also be pushed up. have. As a result, the adjustment interval d2 of the buffer unit 350 may be reduced by the rising distance of the lid 22.

The buffer unit 350 may serve to reduce the weight of the gripping unit 310. For example, the buffer unit 350 is fixed to the rotating unit 320 and provides an elastic force upward, thereby reducing the weight of the gripping unit 310 pressing the lid 22. The configuration of the buffer unit 350 is not particularly limited.

For example, the buffer unit 350 may have an elastic structure such as a spring, a pneumatic structure such as a cylinder, and may include a motor. That is, the buffer unit 350 is not particularly limited as long as it has a configuration capable of raising the gripping unit 310 as well when the lid 22 is separated from the sampling bottle 21 and ascends.

The detection sensor 371 may detect that the lid 22 is completely separated from the sampling bottle 21 as the holding portion 310 is raised. The configuration in which the detection sensor 371 detects that the lid 22 is completely separated from the sampling bottle 21 is not particularly limited.

For example, the detection sensor 371 includes an optical transmitter and an optical receiver, and when the gripping unit 310 rises above a predetermined height, a signal transmitted from the optical transmitter may be blocked from being received by the optical receiver. Accordingly, if the optical signal is not received, it can be determined that the lid 22 is separated from the sampling bottle 21. However, the present invention is not limited thereto, and the detection sensor 371 may have an electric or mechanical sensing structure.

Referring to FIG. 6, when it is determined that the lid 22 is completely separated from the sampling bottle 21, the gripper 310 may be raised. The lifting part 330 may drive the cylinder to lift the gripping part 310. At this time, the connection frame 332 may be connected to the gripping unit 310, may be connected to the buffer unit 350, or may be connected to the rotating unit 320. That is, the connection frame 332 may be connected to an appropriate position so that the detachable module 300 can be raised and lowered.

The detachable module 300 can be lifted upward from the sampling bottle 21 by the lift unit 330. In this case, the adjustment interval d2 of the buffer unit 350 during the elevating process may be extended in the vertical direction again by gravity.

7 is a view showing a process of putting a chemical in a container.

When the detachable module 300 rises after removing the lid 22, the control unit 110 can move the holder module 220 to sample the chemical selected by the operator from among a plurality of sampling lines (L1, L2, L3). have.

Chemicals can store various chemicals required for semiconductor processing and the like. Accordingly, when the sampling bottle 21 is disposed on the sampling lines L1, L2, and L3 through which chemicals requiring inspection are discharged, a supply device (not shown) is driven to fill the sampling bottle 21 with chemicals.

In this case, a drain module (not shown) for discharging chemicals remaining in the sampling lines L1, L2, and L3 may be further disposed. Chemicals filled in the sampling lines (L1, L2, L3) are likely to stagnate after a certain period of time, resulting in sediment or contamination through open discharge ports. Therefore, by discharging the chemicals remaining in the sampling lines L1, L2, and L3 before sampling, the reliability of chemical contamination analysis can be improved.

8 is a view showing a state in which the lid is coupled to the container, and FIG. 9 is a view showing a state in which the container has moved to the standby area.

Referring to FIG. 8, when the sampling bottle 21 is filled with chemicals, the holder module 220 may place the sampling bottle 21 under the detachable module 300 again.

The gripping portion 310 may descend and rotate to couple the lid 22 to the sampling bottle 21. At this time, when the gripping part 310 couples the lid 22 to the sampling bottle 21, the buffer part 350 contracts again to prevent the gripping part 310 from excessively pressing the sampling bottle 21. I can.

The lid 22 presses the sampling bottle 21 due to the lowering of the gripping part 310, but the weight of the gripping part 310 is sufficiently reduced by the buffer part 350, so that the gripping part 310 becomes a sampling bottle ( 21) can be pushed up.

Thereafter, by rotation, the lid 22 descends while being coupled to the sampling bottle 21, and the gripping portion 310 may also descend to a height at which the lid 22 descends. As the gripping portion descends, the buffer unit 350 may extend in the vertical direction again.

The detection sensor 371 may detect that the lid 22 is completely coupled to the sampling bottle 21 by measuring the height of the lowering of the grip portion 310. For example, the detection sensor 371 includes an optical transmitter and an optical receiver, and when the gripping part 310 falls below a predetermined height, a signal transmitted from the optical transmitter may be blocked from being received by the optical receiver. Accordingly, if no optical signal is received, it can be determined that the lid 22 is completely coupled in the sampling bottle 21.

According to an embodiment, a torque measuring unit (not shown) for measuring a torque value of the rotating unit 320 may be included. The control unit 110 may compare the torque value of the rotating unit 320 with a preset torque value.

The control unit 110 may determine that the lid 22 is coupled to the sampling bottle 21 when the torque value of the rotating unit 320 is within a preset torque range. If the torque value does not reach the preset torque range, it may be determined that the lid 22 is not coupled to the sampling bottle 21 and is idle.

The controller 110 may determine that the lid 22 is coupled to the sampling bottle 21 when a lid closing signal is detected by the detection sensor 371 and the measured torque value is within a set range.

Accordingly, when the lid closing signal is detected but the torque value does not reach a preset range, it may be determined that the lid 22 is not coupled to the sampling bottle 21 and is idle.

In addition, when the torque value reaches the preset range but the lid closing signal is not detected, it may be determined that the lid 22 is erroneously fastened to the sampling bottle 21. In this case, since the control unit 110 can output an error signal to the outside, it is possible to prevent an accident due to a bad fastening of the lid 22.

When the lid closing signal is sensed and the torque value reaches a preset range, the controller 110 may separate the gripping part 310 from the lid 22 and raise the detachable module 300.

Thereafter, the control unit 110 may raise the shielding door 102 and transfer the sampling bottle 21 to the waiting space 100a. Accordingly, the operator can open the door 103 and collect the sampling bottle 21.

10 is a cross-sectional view of the detachable module, Fig. 11 is an enlarged view of the buffer unit, and Fig. 12 is a view showing the height at which the detachable module moves up and down together with the lid by the buffer unit.

10 to 12, the detachable module 300 includes a gripping part 310 coupled to the lid, a rotating part 320 for rotating the gripping part 310, and an elevating part for elevating the gripping part 310 ( 330).

The gripping part 310 may grip the lid, and may further include a plurality of grippers 312, a frame 313, and a plate member 318 for this purpose.

The plurality of grippers 312 may be rotatably coupled to the frame 313 to support the side surfaces of the lid 22.

The frame 313 is connected to the piston 317 and can move in the vertical direction, that is, in the Z direction. The frame 313 and the plurality of grippers 312 may be connected by a connection link (not shown). The vertical linear motion of the frame 313 may be converted into a rotational motion of the gripper 312 by a connection link (not shown).

Therefore, when the frame 313 is raised and lowered, the plurality of grippers 312 are opened and separated from the lid 22, and when the frame 313 is lowered, the plurality of grippers 312 are close to each other to grip the lid 22. . However, the present invention is not limited thereto, and the plurality of grippers 312 may be designed to be close to each other when the frame 313 is lowered, and the plurality of grippers 312 may be separated from each other when the frame 313 is raised.

The plate member 318 may be disposed under the frame 313 to be coupled to be vertically movable. The plate member 318 may include an elastic member. For example, the elastic member may be a spring, but is not limited thereto, and a magnetic may be used.

The lower surface of the plate member 318 may be disposed to face the upper surface of the lid held by the plurality of grippers 312. Therefore, damage caused by collision with the sampling bottle 21 or the lid 22 can be suppressed when the gripping part 310 is raised or lowered, and the sampling bottle 21 is in an upright state even if it is in a partially inclined state. Can be converted.

The frame elevating unit for elevating the frame 313 may include a cylinder 316 and a piston 317. The piston 317 is disposed in the inner space C1 of the cylinder 316 and may move up and down according to the inflow of the fluid.

The piston 317 may include a first rod 317a extending upward and into which a fluid is injected, and a second rod 317b extending downward and connected to the frame 313.

The cylinder holder 340 may be provided with fluid ports 341 and 342 for injecting fluid into the inner space C1 of the cylinder 316. In addition, fluid passages 317a-1 and 317a-2 connected to the fluid ports 341 and 342 of the cylinder holder 340 may be formed in the first rod 317a.

For example, when a fluid is injected into the first fluid passage 317a-1, the fluid is discharged into the lower space R1 of the piston 317, so that the piston 317 rises. On the contrary, when fluid is injected into the second fluid passage 317a-2, the fluid is injected into the upper space R2 of the piston 317, so that the piston 317 descends. With this configuration, the gripper 312 can be driven by raising and lowering the piston 317.

However, the configuration for raising and lowering the piston 317 is not necessarily limited thereto and may be variously modified. For example, it may be configured as a motor. In addition, the structure of gripping the lid 22 using the gripper 312 may be variously modified.

The cylinder 316 may be rotated by being coupled to the rotating shaft of the rotating part 320. The cylinder holder 400 may support a rotating cylinder 316. The first fastening member 343 and the second fastening member 333 may fix the cylinder holder 400 to the connection frame 332. The end of the cylinder 316 may protrude from the cylinder holder 400 and be connected to the buffer unit 350.

Referring to FIG. 11, the buffer unit 350 includes a buffer housing 351 in which a space part C3 is formed on one side, a buffer cover 354 covering one side of the buffer housing 351, and the interior of the space part C3. It may include a moving member 352 disposed in the and an elastic member 353 disposed between the moving member 352 and the buffer cover 354.

The buffer housing 351 may include a space C3 into which the moving member 352 is inserted. The moving member 352 may slide up and down in the space portion C3 by the buffer cover 354. One end of the elastic member 353 may be fixed to the buffer cover 354.

Since the end of the cylinder 316 is connected to the moving member 352, the moving member 352 can be lowered by the weight of the gripping part 310. Therefore, since the elastic member 353 is pressed by the moving member 352, it can have an elastic force in the upwardly lifting direction. Accordingly, the weight applied by the gripping portion 310 to the sampling bottle 21 by the elastic member 353 can be reduced.

For example, when the weight of the gripping part 310 is 1.5 kg, the weight applied to the sampling bottle 21 by the elastic member 353 may be reduced to 0.8 kg. As the elastic force of the elastic member 353 increases, the weight applied to the sampling bottle 21 may decrease.

Accordingly, when the lid 22 gradually rises while being separated from the sampling bottle 21, the gripping portion 310 may rise due to the lifting force of the lid 22. In addition, while the lid 22 is fastened to the sampling bottle 21, the gripping portion 310 may descend. However, the structure of the buffer unit 350 is not necessarily limited thereto, and various buffer structures capable of controlling the weight of the gripping unit 310 may be applied.

The buffer housing 351 may include a protrusion 355 protruding from the other side and connected to the rotating part 320. The protrusion 355 may be connected to the rotating shaft of the rotating part 320 by the connection module 321.

The cylinder 316 of the gripping portion 310 may be fixed to the moving member 352. Therefore, when the rotating part 320 is rotated, the buffer part 350 and the gripping part 310 may rotate together.

Referring to FIG. 12, it can be seen that as the gripping part 310 rises, the gap between the buffer part 350 decreases. Accordingly, the rising distance d1 of the gripping unit 310 may correspond to the adjustment interval d2 of the buffer unit 350.

13 is a view showing a state in which the modified detachable module moves up and down together with the lid.

Referring to FIG. 13, the buffer unit 350 may be disposed between the gripping unit 310 and the lifting unit 330. Specifically, the buffer unit 350 is a sliding member 357 protruding upward from the elevating unit 330 and penetrating the connection frame 332, a stopper 356 disposed above the sliding member 357, and a connection frame It may include an elastic member 353 arranged to lift 332 upward. Exemplarily, the elastic member 353 may have one end fixed to the stopper 356 and the other end fixed to the connection frame 332.

According to this configuration, as described above, since the elastic member 353 can reduce the weight of the gripping part 310, the gripping part 310 can be pushed to the lid 22 and rise. However, since the weight applied to the lid 22 is the total weight of the detachable module 300 including the gripping part 310 and the rotating part 320, the weight applied to the sampling bottle 21 may be relatively large. In contrast, in the structure of FIG. 12, since the buffer part 350 is between the gripping part 310 and the rotating part 320, the weight applied to the lid 22 may be reduced by the weight of the gripping part 310. Therefore, there is an advantage of minimizing deformation of the sampling bottle by reducing the weight.

14 is a conceptual diagram of a holder module, FIG. 15 is a diagram showing a second detection sensor disposed in the holder module, and FIG. 16 is a conceptual diagram of a second detection sensor.

14 and 15, the holder module 220 includes a first holder 221a and a second holder 221b spaced apart from each other for fixing the sampling bottle 21, a first holder 221a, and a second holder. It may include a driving module 223 for moving (221b), and a moving rail 222. The first holder 221a and the second holder 221b may include a second detection sensor 224 disposed on opposite surfaces. The second detection sensor 224 may be a liquid detection sensor that senses a chemical.

Referring to FIG. 16, the second detection sensor 224 includes a cover layer 224a protecting the first and second metals 224b and 224c spaced apart from each other, and the first and second metals 224b and 224c, and It may include a power supply unit (224d) for applying power.

Since the cover layer 224a is made of a flexible material, the second detection sensor 224 may be fixed to the inner surfaces of the first holder 221a and the second holder 221b.

A voltage may be applied to the first and second metals 224b and 224c. Since the first and second metals 224b and 224c are spaced apart from each other, current does not flow normally, but when the conductive chemical CH is buried, current flows. Accordingly, when the second detection sensor 224 detects that current flows, the controller 110 may determine that the chemical is exposed and output a warning signal. However, the method of detecting the exposure of the chemical is not limited thereto. For example, by measuring the resistance, the exposure of the chemical may be measured, or a voltage change may be used.

In addition, the second detection sensor 224 may be disposed inside the case 100 to sense a chemical away from the sampling lines L1, L2, and L3. In addition, the second detection sensor 224 may sense a chemical overflowing from the sampling bottle 21 due to an error of a sensor measuring the amount of sampling or an error such as a time check. In this case, the second detection sensor 224 may be disposed on the lower and side surfaces of the sampling lines L1, L2, and L3, but is not limited thereto.

17 is a flowchart illustrating a sampling method according to an embodiment of the present invention.

Referring to Figure 17, the sampling method according to the embodiment, the step of fixing the container (S10), the step of separating the lid coupled to the container (S20), the step of filling the container with a chemical (S30), the lid to the container It may include the step of combining (S40), and the step of transferring the container to the waiting space (S50). The lid opening and closing method may include fixing the container (S10), separating the lid coupled to the container (S20), and coupling the lid to the container (S40).

2, the step of fixing the container (S10), when the operator opens the door 103 and places the sampling bottle 21 in the waiting space 100a, the holder module 220 is the sampling bottle 21 Can be gripped.

Referring to Figure 3, the step of separating the lid coupled to the container (S20), when the holder module 220 transfers the sampling bottle 21 to the lower portion of the detachment module 300, the wave of the detachment module 300 The branch 310 may descend and be coupled to the lid 22 of the sampling bottle 21. Thereafter, the lid 22 may be separated from the sampling bottle 21 while the holding portion 310 rotates.

At this time, when the lid 22 rises in the process that the thread of the lid 22 is separated from the thread of the sampling bottle 21, the gripping part 310 may also rise together with the lid 22 by the buffer part 350. I can. According to this configuration, while the lid 22 rises, the gripping portion 310 does not rise, so that the shape of the sampling bottle 21 is deformed.

Even when the lifting part 330 raises the gripping part 310, the rotating part 320 may continue to rotate the gripping part 310. According to this configuration, it is possible to prevent the thread of the sampling bottle 21 and the end of the thread of the lid 22 from being caught by the continuous rotation of the lid 22. Accordingly, it is possible to prevent the sampling bottle 21 from being caught on the lid 22 or damaging the screw thread.

Referring to FIG. 7, in the step of filling the container with chemicals (S30), the sampling bottle 21 may be transferred to a predetermined position so as to fill the chemicals required for inspection. Before charging the chemicals in the sampling lines L1, L2, and L3, the chemicals remaining in the sampling lines L1, L2, and L3 may be discharged in advance. Chemicals filled in the sampling lines (L1, L2, L3) are likely to stagnate after a certain period of time, resulting in sediment or contamination through open discharge ports. Therefore, it is possible to increase the reliability of chemical contamination analysis through the drain operation.

At this time, since the holder module 220 has a second detection sensor 224 disposed as shown in FIG. 15, the controller 110 determines that the chemical is exposed to the outside when a detection signal is output from the second detection sensor 224. Warning signal can be output. Alternatively, when a detection signal is sensed by the second detection sensor 224 disposed under the case 100, a warning signal may be output.

Referring to Figure 8, the step of coupling the lid 22 to the container (S40), when disposed under the detachable module 300 in a state in which the chemical is contained in the sampling bottle 21, the gripping portion 310 is lowered Thus, after placing the lid 22 on the top of the sampling bottle 21, the lid 22 can be coupled to the sampling bottle 21 by rotating.

At this time, as described above, since the weight of the holding unit 310 pressing the sampling bottle 21 by the buffer unit 350 can be reduced, the sampling bottle 21 can sufficiently support the holding unit 310.

Thereafter, as the lid 22 and the sampling bottle 21 are coupled by rotation, the lid 22 descends, and the gripping portion 310 may also descend like the lid 22.

When lowering to the position where the lid 22 and the coupling are completed, the detection sensor 371 may transmit a closing detection signal to the control unit 110. In addition, the torque measurement unit may measure the torque value of the motor of the rotation unit 320 and transmit it to the control unit 110.

The control unit 110 may determine that the lid 22 is coupled to the sampling bottle 21 when the torque value of the rotating unit 320 is within a preset torque range. If the torque value does not reach the preset torque range, it may be determined that the lid 22 is not coupled to the sampling bottle 21 and is idle.

The controller 110 may determine that the lid 22 is coupled to the sampling bottle 21 when a signal for closing the lid 22 is detected by the detection sensor 371 and the torque value is within the set range. .

Accordingly, when the lid closing signal is detected but the torque value does not reach a preset range, it may be determined that the lid 22 is not coupled to the sampling bottle 21 and runs idle.

In addition, when the torque value reaches a preset range but the lid closing signal is not detected, it may be determined that the lid 22 is erroneously fastened to the sampling bottle 21. In this case, since the control unit 110 can output an error signal to the outside, it is possible to prevent dangers and accidents due to non-fastening of the lid 22.

When the lid closing signal is sensed and the torque value reaches a preset range, the control unit 110 may separate the gripping part 310 to the lid 22 and raise the detachable module 300.

In the step of transferring to the standby space, the sampling bottle 21 to which the lid 22 is coupled may be transferred to the standby space and an alarm signal may be output to the outside. Accordingly, the operator can open the door 103 and retrieve the sampling bottle 21.

The embodiments have been described above, but these are only examples and do not limit the present invention, and those of ordinary skill in the field to which the present invention belongs are not exemplified above without departing from the essential characteristics of the present embodiment It will be seen that various modifications and applications are possible. For example, each component specifically shown in the embodiment can be modified and implemented. And differences related to these modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

Claims (18)

A case in which the container to which the lid is fastened is accommodated;
A lid opening and closing device separating or fastening the container and the lid; And
It includes a plurality of sampling lines for filling chemicals in the container from which the lid is separated,
The lid opening and closing device,
A holder module for fixing the container; And
It includes a detachable module for separating the lid from the container or fastening the lid to the container,
The container includes a first thread, and the lid includes a second thread that engages with the first thread,
The detachable module,
A holding portion coupled to the lid;
A rotating part that rotates the gripping part;
An elevating part for moving the gripping part in an up-down direction; And
The second screw thread is separated from the first screw thread and includes a buffer unit for raising the gripping portion together with the lid when the lid is raised,
The buffer unit operates in a direction in which the lid is raised to reduce the weight of the gripping unit applied to the container,
The case includes a waiting space in which the container to which the lid is fastened is accommodated, a working space in which the container is filled with chemicals, and a shielding door partitioning the waiting space and the working space, and the lid opening/closing device and the sampling line are All are placed in the workspace,
The shielding door is opened so that the container accommodated in the waiting space is transferred to the working space, and the shielding door is opened so that the container is transferred to the waiting space when the lid is recombined after the container is filled with chemicals,
Each of the plurality of sampling lines includes a pump and a valve,
A sampling line for discharging chemicals to be filled in the container among the plurality of sampling lines discharges residual chemicals remaining in the sampling line in advance before the container arrives at the sampling position using the pump and valve,
The lid opening/closing device includes a detection sensor that detects completion of coupling or separation of the lid and the container,
A chemical sampling device for detecting whether the chemical is exposed by a liquid detection sensor disposed inside the case. The method of claim 1,
The buffer unit is a chemical sampling device for lowering the gripping portion together with the lid when the second screw thread is coupled with the first thread to lower the lid. delete The method of claim 1,
The buffer unit is a chemical sampling device disposed between the holding unit and the rotation unit. The method of claim 2,
The buffer unit,
A buffer housing having a space portion formed on one side thereof,
A buffer cover covering one side of the buffer housing,
A moving member disposed inside the space unit, and
Chemical sampling device comprising an elastic member disposed between the moving member and the buffer cover. The method of claim 5,
The buffer housing is a chemical sampling device including a protrusion protruding from the other side and connected to the rotating part. The method of claim 5,
The gripping portion includes a cylinder having one end fixed to the moving member,
A chemical sampling device that rotates the cylinder and the buffer unit together with the rotating unit. The method of claim 2,
The buffer unit is a chemical sampling device disposed between the holding unit and the lifting unit. The method of claim 2,
And a connection frame connecting the gripping part and the lifting part,
The buffer unit,
A sliding member protruding upward from the elevating part and passing through the connection frame;
A stopper disposed on the sliding member; And
A chemical sampling device comprising an elastic member having one end fixed to the stopper and the other end fixed to the connection frame. The method of claim 2,
A torque measuring unit for measuring a torque value of the rotating unit, and
And a control unit for determining whether the lid and the container are coupled by comparing the torque value of the rotating unit with a preset torque value. delete delete The method of claim 10,
When the coupling completion signal is received from the detection sensor and the torque value measured by the torque measuring unit falls within a preset torque range, the control unit determines that the coupling of the lid is complete and controls the gripping unit to separate from the lid. Chemical sampling device. The method of claim 1,
The holder module,
A liquid detection sensor disposed on an inner surface in contact with the container;
A power application unit for applying power to a liquid detection sensor disposed on the inner surface of the container; And
A chemical sampling device comprising a control unit configured to detect a liquid contact by measuring a change in a signal output from a liquid detection sensor disposed on an inner surface of the container.
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