KR20200133985A - Sealer pump assembly and method of controlling same - Google Patents

Abstract

Embodiments in accordance with one aspect of the present invention relate to a sealer pump assembly. According to an embodiment, the sealer pump assembly includes: a first storage tank storing a sealer material; a first pump suctioning the sealer material stored in the first storage tank and discharging the same to a sealer application apparatus and moving up and down to the first storage tank; a second pump placed above the first pump to be moved together with the first pump, and providing a driving force for operating the first pump; a connecting rod connecting the first and second pumps; a first sensor formed to detect a predetermined part of the first pump; a second sensor formed to detect the connecting rod on a route where the connecting rod moves up and down; and a control part formed to determine that the residual sealer material stored in the first storage tank is insufficient based on the frequency of the detection of the connecting rod by the second sensor after a predetermined part of the first pump is detected by the first sensor. Therefore, the present invention is capable of reducing the time required for replacement of the first storage tank and reducing costs for the disposal of the remaining sealer materials.

Description

Sealer pump assembly and its control method TECHNICAL FIELD [SEALER PUMP ASSEMBLY AND METHOD OF CONTROLLING SAME}

The present disclosure relates to a sealer pump assembly and a control method thereof.

The vehicle body of an automobile is assembled by welding or bonding various metal panels. During the assembly process, liquid or paste-like substances (hereinafter referred to as “sealers”) having characteristics such as adhesion, sealing, vibration suppression, rust prevention, waterproofing, and strength reinforcement may be applied to the metal panel by a sealer application device. have. Sealers are stored in storage tanks according to various capacities and types depending on the object to be applied. The sealer raw material stored in the storage tank is supplied to the sealer application device by the sealer pump. When the sealer pump is idle, air bubbles or air may be included in the sealer raw material supplied to the sealer application device. As a result, the quality of the sealer applied to the metal panel may deteriorate. In order to prevent air bubbles or air from being included or introduced into the sealer raw material, the sealer pump may be configured to stop the operation when the storage tank reaches a predetermined position. In this case, although a significant amount of sealer raw material remains at the bottom of the storage tank, it can be replaced with a new storage tank.

A significant amount of the sealer raw material remaining at the bottom of the storage tank may contain air bubbles or air, making it difficult to recycle for applying sealers for other uses. Even if the sealer is applied to the same object, a large amount of the sealer material is required as much as the remaining amount. In addition, when a large amount of residual sealer raw materials are discarded, disposal costs may be incurred, and depending on the replacement of the storage tank, the sealer application time may be lengthened. Thus, the overall cost associated with applying the sealer increases.

The present disclosure provides a sealer pump assembly capable of reducing the overall cost associated with applying the sealer by reducing the amount of the sealer raw material remaining in the storage tank, for example, when the storage tank is replaced, and a control method thereof.

Embodiments according to one aspect of the present disclosure relate to a sealer pump assembly. A sealer pump assembly according to an exemplary embodiment includes: a first storage tank in which a sealer raw material is stored; A first pump that sucks the sealer raw material stored in the first storage tank, discharges it to the sealer application device, and moves up and down with respect to the first storage tank; A second pump disposed above the first pump, configured to move integrally with the first pump, and providing a driving force for driving the first pump; A connecting rod connecting the first pump and the second pump; A first sensor configured to detect a predetermined portion of the first pump; A second sensor configured to detect the connecting rod on a path in which the connecting rod moves in the vertical direction; And a control unit configured to determine that the remaining amount of the sealer raw material stored in the first storage tank is insufficient based on the detection frequency of the connecting rod by the second sensor after a predetermined portion of the first pump is detected by the first sensor. Include.

In one embodiment, the control unit may be configured to compare the detection frequency of the connecting rod with a preset threshold value, and determine that the residual amount of the sealer raw material stored in the first storage tank is insufficient if the detection frequency is greater than the threshold value. .

In one embodiment, the threshold value may be set to be related to the detection frequency of the connecting rod when the first pump operates normally because the residual amount of the sealer raw material stored in the first storage tank is not insufficient.

In one embodiment, the controller may be configured to stop the second pump when it is determined that the remaining amount of the sealer raw material stored in the first storage tank is insufficient.

In one embodiment, further comprising a second storage tank provided separately from the first storage tank and connected to the sealer application device, the control unit, when it is determined that the remaining amount of the sealer raw material stored in the first storage tank is insufficient, the first It may be configured to stop supply of the sealer raw material from the first storage tank and supply the sealer raw material stored in the second storage tank.

In one embodiment, a first support fixed to the ground, and configured to move in a vertical direction with respect to the first support, may further include a second support to which the first pump and the second pump are coupled.

In an embodiment, the first sensor may be disposed on an upper end of the first support and configured to detect a lower limit of the first pump by detecting a position of the upper end of the second support.

In one embodiment, a second target to be detected is coupled to the connecting rod, and the second sensor may be configured to detect a second target to be detected coupled to the connecting rod.

In an embodiment, the second sensor includes: an upper sensor configured to detect the connecting rod at a first position on a path in which the connecting rod moves in an up-down direction; And a lower sensor configured to detect the connecting rod at a second position on the path in which the connecting rod moves in the vertical direction.

A sealer pump assembly according to another exemplary embodiment includes: a first storage tank in which a sealer raw material is stored; A first pump that sucks the sealer raw material stored in the first storage tank, discharges it to a sealer application device, and moves in a vertical direction with respect to the storage tank; It is disposed above the first pump, is configured to move integrally with the first pump, provides a driving force to drive the first pump, and provides a cylinder, a piston reciprocating in the vertical direction within the cylinder, and a piston coupled to the piston A second pump including a rod; A connecting rod connecting the piston rod of the first pump and the second pump; A first sensor configured to detect a predetermined portion of the first pump; A second sensor configured to detect the piston on a path in which the piston moves in the vertical direction; And a control unit configured to determine that the residual amount of the sealer raw material stored in the first storage tank is insufficient based on the frequency of detection of the piston by the second sensor after a predetermined portion of the first pump is detected by the first sensor. do.

In an embodiment, a second target to be detected is coupled to the piston, and the second sensor may be configured to detect a second target to be detected that is mounted outside the cylinder and coupled to the piston.

Embodiments according to an aspect of the present disclosure relate to a method of controlling a sealer pump assembly. A method of controlling a sealer pump assembly according to an exemplary embodiment includes: a first pump that sucks and discharges a sealer material from a first storage tank in which a sealer material is stored, a second pump that provides a driving force to drive the first pump, and a second pump. A method for controlling a sealer pump assembly including a connecting rod connecting a first pump and a second pump, the method comprising: detecting a predetermined portion of the first pump by a first sensor of the sealer pump assembly; Detecting a connecting rod on a path in which the connecting rod moves in an up-down direction by a second sensor of the sealer pump assembly; And determining, by the control unit of the sealer pump assembly, that the remaining amount of the sealer raw material stored in the first storage tank is insufficient based on the detection frequency of the connecting rod by the second sensor.

In one embodiment, in the step of determining that the remaining amount of the sealer raw material is insufficient, by comparing the detection frequency of the connecting rod with a preset threshold value, if the detection frequency is greater than the threshold value, the sealer raw material stored in the first storage tank You can judge that the remaining amount is insufficient.

In one embodiment, the threshold value may be set to be related to the detection frequency of the connecting rod when the first pump operates normally because the residual amount of the sealer raw material stored in the first storage tank is not insufficient.

In one embodiment, the control method of the sealer pump assembly further comprising the step of stopping the second pump when it is determined that the remaining amount of the sealer raw material stored in the first storage tank is insufficient.

In one embodiment, when it is determined that the remaining amount of the sealer raw material stored in the first storage tank is insufficient, the supply of the sealer raw material from the first storage tank is stopped, and the sealer from the second storage tank provided separately from the first storage tank. It may further include the step of supplying the raw material.

In one embodiment, in the step of detecting a predetermined portion of the first pump, the first sensor is disposed on the upper end of the first support fixed to the ground, moves vertically with respect to the first support, and the first pump And by detecting the position of the upper end of the second support to which the second pump is coupled, the lower limit of the first pump may be detected.

In an embodiment, in the step of detecting the connecting rod, the second sensor may detect a second target to be detected coupled to the connecting rod.

In another exemplary embodiment, a method for controlling a sealer pump assembly includes a first pump that sucks and discharges a sealer material from a first storage tank in which the sealer material is stored, and a driving force for driving the first pump is provided, and A method for controlling a sealer pump assembly including a second pump having a piston reciprocating in a vertical direction, the method comprising: detecting a predetermined portion of the first pump by a first sensor of the sealer pump assembly; Detecting a piston on a path in which the piston moves in an up-down direction by a second sensor of the sealer pump assembly; The control unit of the sealer pump assembly may include determining that the residual amount of the sealer raw material stored in the first storage tank is insufficient based on the detection frequency of the piston by the second sensor.

In an embodiment, in the step of detecting the piston, the second sensor may be disposed outside the cylinder of the second pump to detect a second target to be detected coupled to the piston of the second pump.

According to the sealer pump assembly and the control method thereof according to an exemplary embodiment, the first sensor is configured to detect a predetermined portion of the first pump, and after the predetermined portion of the first pump is detected by the first sensor, It is configured to determine that the residual amount of the sealer raw material stored in the first storage tank is insufficient based on the detection frequency of the connecting rod by the 2 sensor. Accordingly, even after a predetermined portion of the first pump is detected by the first sensor, by controlling the first pump to be further driven for a preset time, the amount of the sealer raw material remaining in the first storage tank can be reduced. Accordingly, it is possible to shorten the time required for replacement of the first storage tank, and to reduce the cost of disposing of the remaining sealer raw materials. As a result, it is possible to reduce the overall cost associated with applying the sealer.

1 is a perspective view showing a sealer pump assembly according to an embodiment of the present disclosure.
FIG. 2 is a cross-sectional view schematically showing a first pump, a second pump, and a connecting rod shown in FIG. 1.
3 is a schematic cross-sectional view showing a first pump shown in FIG. 2.
4 is a schematic cross-sectional view showing the second pump shown in FIG. 2.
5 is a block diagram schematically showing a sealer pump assembly according to an embodiment of the present disclosure.
6 is a front view schematically showing two sealer pump assemblies.
7 is a partial enlarged view showing an enlarged portion A shown in FIG. 1.
8 is a perspective view exemplarily showing a state in which the first pump is detected by the first sensor.
9 is a partially enlarged view showing an enlarged portion B shown in FIG. 1.
10 is a partially enlarged view showing another example of the second sensor shown in FIG. 9.
11 is a cross-sectional view schematically showing a second pump as a sealer pump assembly according to another embodiment of the present disclosure.
12 is a cross-sectional view showing another example of the second pump shown in FIG. 11.
13 is a flowchart schematically illustrating a method of controlling a sealer pump assembly according to an embodiment of the present disclosure.
14 is a flow chart schematically showing a method of controlling a sealer pump assembly according to another embodiment of the present disclosure.

Embodiments of the present disclosure are illustrated for the purpose of describing the technical idea of the present disclosure. The scope of the rights according to the present disclosure is not limited to the embodiments presented below or a detailed description of these embodiments.

All technical and scientific terms used in the present disclosure have meanings generally understood by those of ordinary skill in the art, unless otherwise defined, to which the present disclosure belongs. All terms used in the present disclosure are selected for the purpose of describing the present disclosure more clearly, and are not selected to limit the scope of the rights according to the present disclosure.

Expressions such as "comprising", "having", "having", etc. used in the present disclosure are open terms that imply the possibility of including other embodiments, unless otherwise stated in the phrase or sentence in which the expression is included. It should be understood as (open-ended terms).

Expressions in the singular form described in the present disclosure may include the meaning of the plural form unless otherwise stated, and the same applies to the expression in the singular form described in the claims.

Expressions such as "first" and "second" used in the present disclosure are used to distinguish a plurality of components from each other, and do not limit the order or importance of the components.

The term "unit" used in the present disclosure refers to software or hardware components such as field-programmable gate array (FPGA) and application specific integrated circuit (ASIC). However, "unit" is not limited to hardware and software. The “unit” may be configured to be in an addressable storage medium, or may be configured to reproduce one or more processors. Thus, as an example, "unit" refers to components such as software components, object-oriented software components, class components, and task components, processors, functions, properties, procedures, subroutines, Includes segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables. Components and functions provided within the "unit" may be combined into a smaller number of components and "units" or further separated into additional components and "units".

The expression "based on" as used in this disclosure is used to describe one or more factors that influence the act or action of a decision or judgment, which is described in a phrase or sentence in which the expression is included, and the expression is It does not exclude additional factors that influence the action or action of a decision or judgment.

In the present disclosure, when a component is referred to as being "connected" or "connected" to another component, a component can be directly connected to or can be connected to another component, or a new other component It is to be understood that it may or may be connected via an element.

The direction indicators such as "up" and "up" used in the present disclosure are based on the direction in which the second pump is positioned with respect to the first pump in the attached drawings, and the direction indicators such as "down" and "down" are It means the opposite direction. The first pump and the second pump shown in the accompanying drawings may be oriented differently, and these direction indicators may be interpreted accordingly.

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In the accompanying drawings, the same or corresponding elements are assigned the same reference numerals. In addition, in the description of the following embodiments, overlapping descriptions of the same or corresponding components may be omitted. However, even if description of a component is omitted, it is not intended that such component is not included in any embodiment.

1 is a perspective view showing a sealer pump assembly according to an embodiment of the present disclosure.

As shown in FIG. 1, a sealer pump assembly 100 according to an embodiment of the present disclosure includes a first storage tank 110; A first pump 120; A second pump 130; Connecting rod 140; A first sensor 150; A second sensor 160; And a control unit 170.

The first storage tank 110 is a tank for storing sealer raw materials, and is also referred to as a drum or a can. The first storage tank 110 may be manufactured to have various capacities and sizes according to the type of the sealer raw material to be stored or the amount of the sealer raw material used. In general, the first storage tank 110 is made of a cylindrical metal.

FIG. 2 is a cross-sectional view schematically showing a first pump, a second pump, and a connecting rod shown in FIG. 1.

The first pump 120 sucks the sealer raw material stored in the first storage tank 110 and discharges it to the sealer application device. The first pump 120 is configured to be movable in the vertical direction with respect to the first storage tank 110. Since the amount of the sealer raw material stored in the first storage tank 110 decreases as the sealer application process proceeds, the height of the sealer raw material in the first storage tank 110 decreases.

The first pump 120 is configured to move from the upper side to the lower side at a lowering speed corresponding to the speed at which the height of the sealer material decreases. As an example, the descending speed of the first pump 120 may be adjusted in real time by measuring the height of the sealer material in the first storage tank 110 in real time. As another example, the descending speed of the first pump 120 may be set based on data obtained through repeated experiments according to the type, viscosity, and capacity of the sealer raw material stored in the first storage tank 110.

3 is a cross-sectional view schematically showing the first pump shown in FIG. 2.

As shown in Figure 3, the first pump 120 is a lid (lid) member 121; Plunger 122; Plunger rod 123; A first valve 124; And a second valve 125. The first pump 120 is not limited to the embodiment shown in FIGS. 2 and 3, and may be variously configured to suck and discharge the sealer raw material stored in the first storage tank 110.

The lid member 121 is inserted into the first storage tank 110 to close the upper portion of the first storage tank 110. A cylindrical cylinder portion 121a is provided inside the lid member 121 so that the plunger 122 reciprocates in the vertical direction. One or more sealing members 121b are mounted on the outer circumferential surface of the lid member 121 for sealing when it is coupled to the first storage tank 110. The sealing member 121b may be made of a rubber material. When the lid member 121 is coupled to the first storage tank 110, the inside of the cylinder portion 121a is at least partially filled with a sealer material. Since the lead member 121 is coupled to the lower end of the coupling rod 185 to be described later, and the second pump 130 is coupled to an approximately midpoint of the coupling rod 185, the first pump 120 and the second The pump 130 is configured to move in the vertical direction integrally with the first storage tank 110.

The plunger 122 is configured to reciprocate in the vertical direction within the cylinder portion 121a. As the plunger 122 repeats reciprocating movement in the vertical direction, the sealer raw material filled in the cylinder portion 121a is sucked upward. The plunger 122 is made of a rubber material. The plunger rod 123 has a rod shape and a connecting rod 140 is connected to the upper end and the plunger 122 is coupled to the lower end. The plunger rod 123 is configured to reciprocate together with the plunger 122 in the vertical direction.

According to an embodiment, by the operation of the plunger rod 123, the first valve 124, and the second valve 125, the sealer raw material is sucked. The first valve 124 is disposed above the plunger rod 123, and the second valve 125 is disposed below the plunger rod 123. For example, when the plunger 122 moves downward, the first valve 124 is closed and the second valve 125 is opened. Accordingly, the sealer raw material between the first valve 124 and the second valve 125 is sucked and discharged through the discharge port. When the plunger 122 moves upward, the first valve 124 is opened and the second valve 125 is closed. Accordingly, the sealer raw material in the cylinder portion 121a is sucked, discharged through the discharge port, and supplied to the sealer application device. As such, the first pump 120 may be configured to suck and discharge the sealer raw material when the plunger rod 123 or the plunger 122 moves upward as well as downward. As another example, the first pump 120 may be configured to suck and discharge the sealer material only when the plunger 122 moves upward or downward.

The second pump 130 is disposed above the first pump 120 and is configured to move in the vertical direction integrally with the first pump 120. The second pump 130 is coupled to an interruption of one or more coupling rods 185 to be described later, and is coupled to the first pump 120 through the coupling rod 185 to vertically and vertically together with the first pump 120. Can be moved in any direction. The second pump 130 generates a driving force for driving the first pump 120 and provides it to the first pump 120 through the connecting rod 140.

4 is a cross-sectional view schematically illustrating the second pump shown in FIG. 2.

As shown in Figure 4, the second pump 130 is a cylinder 131; Piston 132; Piston rod 133; A first supply exhaust passage 134; And a first supply exhaust passage 135. The second pump 130 is not limited to the embodiment shown in FIGS. 2 and 4 and may be variously configured to reciprocate the connecting rod 140 in the vertical direction.

The piston 132 reciprocates in the vertical direction within the cylinder 131 by air pressure that is switched from the manifold and supplied or exhausted. The piston 132 is disposed so that the outer peripheral portion contacts the inner peripheral surface of the cylinder 131. The piston rod 133 has a rod shape, the piston 132 is coupled to the upper end and the connecting rod 140 is connected to the lower end.

The first supply exhaust passage 134 is formed in the cylinder 131 to be positioned above the piston 132, and the second supply exhaust passage 135 is formed in the cylinder 131 to be positioned below the piston 132 do. The first supply exhaust passage 134 communicates with the manifold through a hose or pipe, and the second supply exhaust passage 135 communicates with the manifold through a hose or pipe. The manifold provides the air pressure through the first supply and exhaust passage 134, exhausts the air pressure through the second supply and exhaust passage 135, and supplies the air pressure through the second supply and exhaust passage 135. It is configured to exhaust air pressure through the exhaust passage 134. For example, as the air pressure is supplied into the cylinder 131 through the first supply and exhaust passage 134 and the air pressure is exhausted from the cylinder 131 through the second supply and exhaust passage 135, the piston 132 It moves downward. When air pressure is supplied into the cylinder 131 through the second supply and exhaust passage 135 and the air pressure is exhausted from the cylinder 131 through the first supply and exhaust passage 134, the piston 132 moves upward. .

The connecting rod 140 is configured to connect the first pump 120 and the second pump 130 and reciprocate in the vertical direction. Specifically, the connecting rod 140 connects the plunger rod 123 of the first pump 120 and the piston rod 133 of the second pump 130 to each other. The connecting rod 140 transmits the driving force for reciprocating movement generated by the second pump 130 to the first pump 120.

The first sensor 150 is configured to detect a predetermined portion of the first pump 120. The first sensor 150 may be configured to detect a component connected or coupled to the first pump 120 or the first pump 120 by being disposed on a path in which the first pump 120 moves in the vertical direction. . That is, the first sensor 150 detects whether the first pump 120 has reached a predetermined position or height by detecting a predetermined portion of the first pump 120. For example, the first sensor 150 may be configured as a contact type proximity sensor or a non-contact type proximity sensor. The contact-type proximity sensor may include a limit switch configured to be turned ON/OFF by direct contact with the first target to be detected 184a. The non-contact proximity sensor may include a Hall sensor made of a Hall element and a permanent magnet, a light sensor coupled to a lamp or a light emitting diode, and the like.

The second sensor 160 is configured to detect the connecting rod 140 on a path in which the connecting rod 140 moves in the vertical direction. The path through which the connecting rod 140 moves in the vertical direction may be set between the top dead center and the bottom dead center of the connecting rod 140. For example, the second sensor 160 may be configured as a contact type proximity sensor including a limit switch or a non-contact type proximity sensor including a Hall sensor.

5 is a block diagram schematically showing a sealer pump assembly according to an embodiment of the present disclosure.

As shown in FIG. 5, the control unit 170 is configured to be electrically connected to the second pump 130, the first sensor 150, and the second sensor 160 to transmit signals to each other. After the predetermined portion of the first pump 120 is detected by the first sensor 150, the control unit 170 is based on the detection frequency of the connecting rod 140 by the second sensor 160, 1 It is configured to determine that the remaining amount of the sealer raw material stored in the storage tank 110 is insufficient.

In one embodiment, the control unit 170 compares the detection frequency of the connecting rod 140 with a preset threshold value, and if the detection frequency is greater than the threshold value, the remaining amount of the sealer raw material stored in the first storage tank 110 It can be configured to determine that it is insufficient. When the remaining amount of the sealer raw material stored in the first storage tank 110 becomes insufficient, the amount of the sealer raw material filled in the cylinder portion 121a of the first pump 120 decreases. The plunger 122 reciprocates in the vertical direction at a high speed in order to maintain a constant discharge flow rate. Using this principle, when the detection frequency of the connecting rod 140 is greater than the threshold value, it may be determined that the remaining amount of the sealer raw material stored in the first storage tank 110 is insufficient.

In one embodiment, the threshold is set to be related to the detection frequency of the connecting rod 140 when the first pump 120 operates normally because the residual amount of the sealer raw material stored in the first storage tank 110 is not insufficient. Can be. The threshold value may be set based on data obtained through repeated experiments according to the type, viscosity, and capacity of the sealer raw material stored in the first storage tank 110. For example, assuming that the connecting rod 140 is detected 50 times per minute by the second sensor 160 when the remaining amount of the sealer raw material stored in the first storage tank 110 is sufficient, the first pump 120 After a predetermined portion of is detected by the first sensor 150, the detection frequency of the connecting rod 140 may be gradually increased from about 60 to about 80 times per minute. When the detection frequency of the connecting rod 140 by the second sensor 160 exceeds 70 times, the controller 170 may determine that the residual amount of the sealer raw material stored in the first storage tank 110 is insufficient.

In one embodiment, the controller 170 may be configured to stop the second pump 130 when it is determined that the remaining amount of the sealer raw material stored in the first storage tank 110 is insufficient. When the first pump 120 continues to operate while the remaining amount of the sealer raw material stored in the first storage tank 110 is insufficient, air or air bubbles may be included in the sealer raw material. When the operation of the second pump 130 is stopped due to insufficient residual amount of the sealer raw material, the operation of the first pump 120 is also stopped, so that the sealer raw material discharged through the first pump 120 does not contain air or air bubbles. You can maintain a good quality condition.

In one embodiment, the control unit 170 may be configured to activate an alarm when it is determined that the remaining amount of the sealer raw material stored in the first storage tank 110 is insufficient. For example, the alarm may include a warning light or a warning sound. As another example, when it is determined that the remaining amount of the sealer raw material stored in the first storage tank 110 is insufficient, the control unit 170 may be configured to block air pressure supplied to the second pump 130 through a solenoid valve. .

6 is a front view schematically showing two sealer pump assemblies of the present disclosure.

In one embodiment, the sealer pump assembly 100 may further include a second storage tank 110a provided separately from the first storage tank 110 and connected to the sealer application device. As shown in FIG. 6, a second sealer pump assembly 100a may be further provided. The second sealer pump assembly 100a may be configured the same as or similar to the sealer pump assembly 100. The sealer pump assembly 100 includes a first storage tank 110, and the second sealer pump assembly 100a includes a second storage tank 110a. In the sealer pump assembly 100, a first switching valve 111 may be installed between the discharge port 120a of the first pump 120 and the sealer supply pipe 50 connected to the sealer application device. In the second sealer pump assembly 100a, a second switching valve 111a may be installed between the discharge port of the first pump and the sealer supply pipe 50. In this embodiment, when it is determined that the remaining amount of the sealer raw material stored in the first storage tank 110 is insufficient, the control unit 170 closes the first switching valve 111 to It may be configured to stop supply of the sealer raw material and open the second switching valve 111a to supply the sealer raw material stored in the second storage tank 110a. In another embodiment, the control unit 170, when it is determined that the remaining amount of the sealer raw material stored in the first storage tank 110 is insufficient, the air pressure supplied to the second pump 130 of the first sealer pump assembly 100 Is blocked through the solenoid valve, and the solenoid valve may be controlled so that air pressure is supplied to the second pump of the second sealer pump assembly 100a.

In one embodiment, the sealer pump assembly 100 may further include a first support 181 and a second support 182. The first support 181 is fixed to the ground. For example, the two first supports 181 may be installed to be perpendicular to the ground. The first connection frame 183 may have a semicircular or polygonal shape and may be installed at the rear of the first support 181. The second support 182 is configured to move in the vertical direction with respect to the first support 181. For example, two second supports 182 may be installed so as to be able to enter and withdraw inside each of the two first supports 181. Conversely, the two first supports 181 may be installed so as to be able to be inserted and withdrawn inside each of the two second supports 182. The second support 182 may be configured to move vertically with respect to the first support 181 by various driving methods such as a hydraulic drive method, a pneumatic drive method, or an electric drive method. For example, the first support 181 may be composed of a hydraulic cylinder or a pneumatic cylinder, and the second support 182 may be composed of a rod drawn in and out of the first support 181.

In one embodiment, the sealer pump assembly 100 may further include a first connection frame 183 connecting two first supports 181 to each other, and the sealer pump assembly 100 includes two second It may further include a second connection frame 184 for connecting the support 182 to each other. The second connection frame 184 is coupled to the upper end of the second support 182. One or more coupling rods 185 extending downward are coupled to the second connection frame 184. The first pump 120 is coupled to the lower end of the coupling rod 185 through the lead member 121. The second pump 130 is coupled to an approximately midpoint of the coupling rod 185. That is, the first pump 120 and the second pump 130 are coupled to the second support 182 through the second connection frame 184 and the coupling rod 185. That is, the first pump 120, the second pump 130, the second connection frame 184, and the second support 182 are configured to move integrally in the vertical direction with respect to the first support 181.

7 is a partial enlarged view showing an enlarged portion A shown in FIG. 1. 8 is a perspective view exemplarily showing a state in which the first pump is detected by the first sensor.

As shown in FIG. 7, in one embodiment, the first sensor 150 may be disposed on the top of the first support 181. The first sensor 150 disposed on the upper end of the first support 181 may be configured to detect a lower limit of the first pump 120 by detecting a position of the upper end of the second support 182. For example, as shown in Figure 8, the first sensor 150 coupled to the upper end of the first support 181 is the upper end of the second support 182 (for example, the second connection frame 184) ) May be configured to detect the approach or contact of the first target to be detected 184a coupled to the ). As the second support 182 to which the first pump 120 is coupled descends with respect to the first support 181, the approach or contact of the first target to be detected 184a is detected by the first sensor 150 If so, the controller 170 determines that the first pump 120 has reached the lower limit position.

9 is a partially enlarged view showing an enlarged portion B shown in FIG. 1.

As shown in FIG. 9, in one embodiment, a second target to be detected 141 is coupled to the connecting rod 140, and the second sensor 160 is coupled to the connecting rod 140. It may be configured to detect the detection target 141. The second sensor 160 is configured to detect a second target to be detected 141 that is fixed to the coupling rod 185 between the first pump 120 and the second pump 130 and moves along the vertical direction. do. For example, the second target to be detected 141 may include a permanent magnet, and the second sensor 160 may include a Hall element that uses a Hall effect by the permanent magnet as the second target to be detected 141. . In this embodiment, the control unit 170 may be configured to determine the detection frequency of the connecting rod 140 through the period of the connecting rod 140 detected by the second sensor 160.

10 is a partially enlarged view showing another example of the second sensor shown in FIG. 9.

As shown in FIG. 10, in one embodiment, the second sensor 160 may include an upper sensor 161 and a lower sensor 162. The upper sensor 161 is configured to detect the connecting rod 140 at a first position on a path in which the connecting rod 140 moves in the vertical direction. The lower sensor 162 is configured to detect the connecting rod 140 at a second position on the path in which the connecting rod 140 moves in the vertical direction. For example, the first position may be set as the top dead center of the connecting rod 140, and the second position may be set as the bottom dead center of the connecting rod 140. In this embodiment, the control unit 170 is the time interval between the detection time of the connecting rod 140 detected by the upper sensor 161 and the detection time of the connecting rod 140 detected by the lower sensor 162 It may be configured to calculate and determine the detection frequency of the connecting rod 140 based on the calculated time interval. As described above, when the second sensor 160 includes the upper sensor 161 and the lower sensor 162, the control unit 170 may more accurately determine the detection frequency of the connecting rod 140.

11 is a cross-sectional view schematically showing a second pump as a sealer pump assembly according to another embodiment of the present disclosure.

As shown in FIG. 11, a sealer pump assembly 200 according to another embodiment of the present disclosure includes a first storage tank 110; A first pump 120; A second pump 130; Connecting rod 140; A first sensor 150; A second sensor 260; And a control unit 270. The first storage tank 110, the first pump 120, the second pump 130, and the first sensor 150 of the sealer pump assembly 200 according to this embodiment are shown in FIGS. 1 to 10. Since the first storage tank 110, the first pump 120, the second pump 130, and the first sensor 150 of the sealer pump assembly 100 according to the embodiment are configured the same or similar, Detailed description is omitted.

The second pump 130 according to this embodiment, similar to the embodiment shown in Figure 3, the cylinder 131; Piston 132; Piston rod 133; A first supply exhaust passage 134; And a second supply exhaust passage 135.

The second sensor 260 is configured to detect the piston 132 on a path in which the piston 132 moves in the vertical direction. For example, the second sensor 260 may be configured as a non-contact proximity sensor including a Hall sensor or the like.

The control unit 270 stores the first based on the frequency of detection of the piston 132 by the second sensor 260 after a predetermined portion of the first pump 120 is detected by the first sensor 150 It is configured to determine that the remaining amount of the sealer raw material stored in the tank 110 is insufficient.

In one embodiment, a second target to be detected 132a is coupled to the piston 132, and the second sensor is mounted on the outside of the cylinder 131 and coupled to the piston 132. ) Can be configured to detect.

The second sensor 260 is configured to detect a second target to be detected 132a that is fixed to the outside of the cylinder 131 between the top dead center and the bottom dead center of the piston 132 and moves along the vertical direction. For example, the second target to be detected 132a may include a permanent magnet, and the second sensor 260 may include a Hall element using the Hall effect by the permanent magnet as the second target to be detected 132a. . In this embodiment, the control unit 270 may be configured to determine the detection frequency of the connecting rod 140 through the cycle of the piston 132 detected by the second sensor 260.

12 is a cross-sectional view showing another example of the second pump shown in FIG. 11.

As shown in FIG. 12, in an embodiment, the second sensor 260 may include an upper sensor 261 and a lower sensor 262. The upper sensor 261 is configured to detect the piston 132 at a first position on the path in which the piston 132 moves in the vertical direction. The lower sensor 262 is configured to detect the piston 132 at a second position on the path in which the piston 132 moves in the vertical direction. For example, the first position may be set as the top dead center of the piston 132, and the second position may be set as the bottom dead center of the piston 132. In this embodiment, the control unit 270 calculates the time interval between the detection time of the piston 132 detected by the upper sensor 261 and the detection time of the piston 132 detected by the lower sensor 262 And, it may be configured to determine the detection frequency of the piston 132 based on the calculated time interval. As described above, when the second sensor 260 includes the upper sensor 261 and the lower sensor 262, the control unit 270 may more accurately determine the detection frequency of the piston 132.

13 is a flowchart schematically illustrating a method of controlling a sealer pump assembly according to an embodiment of the present disclosure.

As shown in Figure 13, the control method (S100) of the sealer pump assembly according to an embodiment of the present disclosure, detecting a predetermined portion of the first pump (S110); Connecting rod detection step (S120); And determining the lack of residual amount of the sealer raw material (S130). The sealer pump assembly used in the control method S100 of the sealer pump assembly according to this embodiment may be configured in the same or similar to the sealer pump assembly 100 according to the embodiment shown in FIGS. 1 to 10. Therefore, a detailed description of the configuration of the sealer pump assembly 100 will be omitted.

In the step S110 of detecting a predetermined portion of the first pump, a predetermined portion of the first pump 120 is detected by the first sensor 150.

In the connecting rod detection step S120, the connecting rod 140 is detected on a path in which the connecting rod 140 moves in the vertical direction by the second sensor 160.

In the determination of insufficient residual amount of the sealer material (S130), it is determined that the residual amount of the sealer material stored in the first storage tank 110 is insufficient based on the detection frequency of the connecting rod 140 by the second sensor 160 .

In the determination step (S120) of determining the lack of residual amount of the sealer material according to an embodiment, by comparing the detection frequency of the connecting rod 140 with a preset threshold value, when the detection frequency is greater than the threshold value, the first storage tank 110 It may be determined that the remaining amount of the sealer raw material stored in the is insufficient. In one embodiment, the threshold value is related to the detection frequency of the connecting rod 140 when the first pump 120 operates normally because the residual amount of the sealer raw material stored in the first storage tank 110 is not insufficient. Can be set.

In an embodiment, the method S100 of controlling the sealer pump assembly may further include stopping the second pump 130 when it is determined that the remaining amount of the sealer raw material stored in the first storage tank 110 is insufficient. .

In one embodiment, the control method of the sealer pump assembly (S100), when it is determined that the remaining amount of the sealer raw material stored in the first storage tank 110 is insufficient, supply of the sealer raw material from the first storage tank 110 Stopping and supplying the sealer raw material from the second storage tank 110a provided separately from the first storage tank 110 may be further included.

In the step (S110) of detecting a predetermined portion of the first pump according to an embodiment, the first sensor 150 is disposed on the upper end of the first support 181 fixed to the ground, with respect to the first support 181 The lower limit of the first pump 120 may be detected by moving in the vertical direction and detecting the position of the upper end of the second support 182 to which the first pump 120 and the second pump 130 are coupled.

In the connecting rod detection step S120 according to an exemplary embodiment, the second sensor 160 may detect the second target to be detected 141 coupled to the connecting rod 140.

14 is a flow chart schematically showing a method of controlling a sealer pump assembly according to another embodiment of the present disclosure.

As shown in Figure 14, the control method (S200) of the sealer pump assembly according to another embodiment of the present disclosure, detecting a predetermined portion of the first pump (S110); Piston detection step (S220); And determining the lack of residual amount of the sealer raw material (S230). The sealer pump assembly used in the control method S200 of the sealer pump assembly according to this embodiment may be configured the same as or similar to the sealer pump assembly 200 according to the embodiment shown in FIGS. 11 to 12. Therefore, a detailed description of the configuration of the sealer pump assembly 200 will be omitted.

In the piston detection step S220, the piston 132 is detected on a path in which the piston 132 moves in the vertical direction by the second sensor 260.

In the determination step S230 of determining the lack of residual amount of the sealer material, it is determined that the residual amount of the sealer material stored in the first storage tank 110 is insufficient based on the detection frequency of the piston 132 by the second sensor 260.

In the piston detection step (S220) according to an embodiment, the second sensor 260 is disposed outside the cylinder 131 of the second pump 130 and coupled to the piston 132 of the second pump 130 It is possible to detect the second target to be detected 132a.

Although process steps, method steps, algorithms, and the like have been described in sequential order in the flowcharts shown in FIGS. 13 and 14, such processes, methods, and algorithms may be configured to operate in any suitable order. In other words, the steps of the processes, methods, and algorithms described in various embodiments of the present disclosure need not be performed in the order described in this disclosure. Further, although some steps are described as being performed asynchronously, in other embodiments, some of these steps may be performed simultaneously. Further, the illustration of the process by depiction in the drawings does not imply that the illustrated process excludes other changes and modifications thereto, and the illustrated process or any of its steps are among the various embodiments of the present disclosure. It does not imply that it is essential to one or more, nor that the illustrated process is desirable.

Although the technical idea of the present disclosure has been described with reference to some embodiments and examples shown in the accompanying drawings above, it does not depart from the technical idea and scope of the present disclosure that can be understood by those of ordinary skill in the art to which the present disclosure belongs. It will be appreciated that various substitutions, modifications and changes may be made in the range. In addition, such substitutions, modifications and alterations should be considered to fall within the scope of the appended claims.

100, 100a, 200: sealer pump assembly, 110: first storage tank, 110a: second storage tank, 120: first pump, 121: lead member, 121a: cylinder portion, 121b: sealing member, 122: plunger, 123 : Plunger rod, 124: first valve, 125: second valve, 130: second pump, 131: cylinder, 132: piston, 133: piston rod, 134: first supply exhaust passage, 135: second supply exhaust passage , 140: connecting rod, 132a, 141: second target to be detected, 150: first sensor, 184a: first target to be detected, 160, 260: second sensor, 161, 261: upper sensor, 162, 262: lower Sensor, 170, 270: control unit, 181: first support, 182: second support, 183: first connection frame, 184: second connection frame, 185: coupling rod, S100, S200: control method of sealer pump assembly

Claims (20)

A first storage tank in which the sealer raw material is stored;
A first pump that sucks the sealer raw material stored in the first storage tank, discharges it to a sealer application device, and moves in a vertical direction with respect to the first storage tank;
A second pump disposed above the first pump, configured to move integrally with the first pump, and providing a driving force for driving the first pump;
A connecting rod connecting the first pump and the second pump;
A first sensor configured to detect a predetermined portion of the first pump;
A second sensor configured to detect the connecting rod on a path in which the connecting rod moves in a vertical direction; And
After the predetermined portion of the first pump is detected by the first sensor, it is determined that the remaining amount of the sealer raw material stored in the first storage tank is insufficient based on the detection frequency of the connecting rod by the second sensor. Control unit configured to determine
Sealer pump assembly comprising a. The method of claim 1,
The control unit is configured to compare the detection frequency of the connecting rod with a preset threshold value, and, if the detection frequency is greater than the threshold value, determine that the remaining amount of the sealer raw material stored in the first storage tank is insufficient, Sealer pump assembly. The method of claim 2,
The threshold value is set to be related to the detection frequency of the connecting rod when the first pump operates normally because the residual amount of the sealer raw material stored in the first storage tank is not insufficient. The method of claim 1,
The control unit is configured to stop the second pump when it is determined that the remaining amount of the sealer raw material stored in the first storage tank is insufficient. The method of claim 1,
Further comprising a second storage tank provided separately from the first storage tank and connected to the sealer application device,
When it is determined that the remaining amount of the sealer raw material stored in the first storage tank is insufficient, the control unit is configured to stop supply of the sealer raw material from the first storage tank and supply the sealer raw material stored in the second storage tank. Being, sealer pump assembly. The method of claim 1,
A first support fixed to the ground,
A sealer pump assembly configured to move in a vertical direction with respect to the first support, and further comprising a second support to which the first pump and the second pump are coupled. The method of claim 6,
The first sensor is disposed on an upper end of the first support and is configured to detect a lower limit of the first pump by detecting a position of the upper end of the second support. The method of claim 1,
A second target to be detected is coupled to the connecting rod,
The second sensor is configured to detect the second target to be detected coupled to the connecting rod. The method of claim 1,
The second sensor,
An upper sensor configured to detect the connecting rod at a first position on a path in which the connecting rod moves in a vertical direction; And
And a lower sensor configured to detect the connecting rod at a second position on a path in which the connecting rod moves in an up-down direction. A first storage tank in which the sealer raw material is stored;
A first pump that sucks the sealer raw material stored in the first storage tank, discharges it to a sealer application device, and moves in a vertical direction with respect to the storage tank;
It is disposed above the first pump, is configured to move integrally with the first pump, provides a driving force for driving the first pump, a cylinder, a piston reciprocating in the vertical direction within the cylinder, and the A second pump including a piston rod coupled to the piston;
A connecting rod connecting the piston rod of the first pump and the second pump;
A first sensor configured to detect a predetermined portion of the first pump;
A second sensor configured to detect the piston on a path in which the piston moves in an up-down direction; And
After the predetermined portion of the first pump is detected by the first sensor, it is determined that the remaining amount of the sealer raw material stored in the first storage tank is insufficient based on the detection frequency of the piston by the second sensor Control unit configured to
Containing, sealer pump assembly. The method of claim 10,
A second target to be detected is coupled to the piston,
The second sensor is mounted outside the cylinder and is configured to detect a second target to be detected coupled to the piston. A first pump that sucks and discharges the sealer material from a first storage tank in which the sealer material is stored, a second pump that provides a driving force to drive the first pump, and a connecting connecting the first pump and the second pump In the control method of the sealer pump assembly including a rod,
Detecting, by a first sensor of the sealer pump assembly, a predetermined portion of the first pump;
Detecting the connecting rod on a path in which the connecting rod moves vertically by a second sensor of the sealer pump assembly; And
Determining, by a control unit of the sealer pump assembly, that the remaining amount of the sealer raw material stored in the first storage tank is insufficient based on the detection frequency of the connecting rod by the second sensor
Control method of a sealer pump assembly comprising a. The method of claim 12,
In the step of determining that the remaining amount of the sealer raw material is insufficient,
By comparing the detection frequency of the connecting rod with a preset threshold value, if the detection frequency is greater than the threshold value, it is determined that the residual amount of the sealer raw material stored in the first storage tank is insufficient. . The method of claim 13,
The threshold value is set to be related to a detection frequency of the connecting rod when the first pump operates normally because the residual amount of the sealer raw material stored in the first storage tank is not insufficient. The method of claim 12,
And stopping the second pump when it is determined that the remaining amount of the sealer raw material stored in the first storage tank is insufficient. The method of claim 12,
When it is determined that the remaining amount of the sealer raw material stored in the first storage tank is insufficient, the supply of the sealer raw material from the first storage tank is stopped and the sealer raw material from a second storage tank provided separately from the first storage tank The control method of the sealer pump assembly further comprising the step of supplying. The method of claim 12,
In the step of detecting the predetermined portion of the first pump,
The first sensor is disposed at an upper end of the first support fixed to the ground, moves vertically with respect to the first support, and determines a position of an upper end of the second support to which the first pump and the second pump are coupled. A method for controlling a sealer pump assembly, by detecting, to detect a lower limit of the first pump. The method of claim 12,
In the step of detecting the connecting rod,
The second sensor detects a second target to be detected coupled to the connecting rod, a method for controlling a sealer pump assembly. A first pump that sucks and discharges the sealer raw material from a first storage tank in which the sealer raw material is stored, and a second pump that provides a driving force for driving the first pump and has a piston reciprocating in the vertical direction in the cylinder In the control method of the sealer pump assembly comprising,
Detecting a predetermined portion of the first pump by a first sensor of the sealer pump assembly;
Detecting the piston on a path in which the piston moves in a vertical direction by a second sensor of the sealer pump assembly;
Determining, by a control unit of the sealer pump assembly, that the remaining amount of the sealer raw material stored in the first storage tank is insufficient based on the detection frequency of the piston by the second sensor
Control method of a sealer pump assembly comprising a. The method of claim 19,
In the step of detecting the piston,
The second sensor is disposed outside the cylinder of the second pump to detect a second target to be detected coupled to the piston of the second pump.

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