KR101101247B1 - Device for precision flow supplying - Google Patents

Abstract

PURPOSE: A precise amount supplying apparatus is provided to continuously release a precise amount of high viscosity liquid based on a low power driving unit by using both a high pressure supplying side pressure and the driving force of the driving unit. CONSTITUTION: A precise amount supplying apparatus includes a precise amount supplying cylinder(100), a releasing part(200), and a controlling part. The precise amount supplying cylinder includes a casing(110), a driving unit(120), and valves(v1 to v4). The casing is divided into a first chamber(112) and a second chamber(114) by a piston(122). The piston is driven by the driving unit. A first valve is installed at a first supplying line(132). A second valve is installed at a second supplying line(134). A third valve is installed at a first releasing line(136) releasing fluid from the first chamber. A fourth valve is installed at a second releasing line(138) releasing fluid from the second chamber. The releasing part is in connection with releasing lines and releases fluid. The controlling part controls the movement of the piston and the opening and closing of the valves.

Description

Device for precision flow supplying

The present invention relates to a quantitative supply device, and more particularly, to a quantitative supply device that enables continuous quantitative discharge of a high viscosity liquid such as a sealer using a low power drive means.

High-viscosity fluids, such as high viscosity fluids such as body sealer (BPR sealer, body panel reinforcement sealer), rock panel primer (RPP), deadener (DEADNER), liquid applied sound dumper (LASD), etc. Apparatuses for feeding have been used.

The body reinforcement sealer will be described as an example.

In general, doors, hoods, fronts, fenders, roofs, trunk lids, etc. of automobiles are formed through the molding of panel members that are easily crushed even with a light impact. It is composed.

For example, in the case of a car door, when the window is lowered, a space is left between the inner panel and the outer panel to secure a space for the window, which causes the outer panel of the door to crush easily with a slight impact. You lose.

In order to prevent the panel member from easily distorting even in the light impact, the panel member is sprayed and applied to the body reinforcement sealer and hardened in the oven of the paint shop, and the rigidity of the door, hood, front, fender, roof, trunk lid, etc. The process of reinforcing has been applied.

As described above, a fixed-quantity supply device for automatically discharging a fixed amount of sealer was used for a sealing operation by spraying a vehicle body reinforcement sealer onto a panel member.

1 is a schematic configuration diagram showing an example of a conventional metering supply device, the metering supply device shown in Figure 1 is largely, the fluid supply unit 10, the pressure regulator 20, the metering control unit 30, It is composed of the discharge unit 40, the sealer of the fluid supply unit 10 is adjusted to the pressure by the pressure adjusting unit 20 is supplied to the quantitative control unit 30, the sealer supplied to the quantitative control unit 30 is discharge unit 40 is discharged quantitatively through the sealing operation is made.

At this time, the quantitative control unit 30 includes a plurality of high-output motor cylinders (31, 36), each motor cylinder (31, 36) is inlet (32a, 37a) receiving the sealer from the fluid supply unit 10 And discharge ports 32b and 37b for discharging the supplied sealer.

Operation according to the configuration of the quantitative control unit as described above alternately operate the motor cylinder 31 on one side and the motor cylinder 36 on the other side, so that there is an overlapping operation time.

That is, one side of the motor cylinder 31 pressurizes the sealer filled in the casing 32 and discharges it through the discharge port 32b, and the other side of the motor cylinder 36 presses the sealer filled in the casing 37. Discharge through the discharge port 37b, the other side of the motor cylinder 36 is operated at the same time when the discharge of the sealer filled in one casing 32 is completed so that the discharge of the sealer through the discharge portion 40 is continuously made It is.

At this time, the operating speed of the corresponding motor cylinder when only one motor cylinder is operated should be controlled to be approximately twice as fast as the operating speed of each motor cylinder when a plurality of motor cylinders are operated at the same time. This is to control the amount of sealant discharged when the motor cylinder is operated and when the plurality of motor cylinders are operated.

However, the conventional fixed-quantity supply device as described above, the high-viscosity sealer filled in each casing (32, 37) by pressing only the force of the motor cylinder (31, 36) to discharge through the discharge port (32b, 37b) For this reason, there was a problem that the output of the motor cylinders 31 and 36 should be considerably high. Also, when the sealer in the casings 32 and 37 is discharged, the motor cylinders 31 and 36 are restored to the initial state of the motor cylinders 31 and 36. The output of the motor cylinders 31, 36 had to be high because it was dependent on the forces of 31, 36).

In addition, it takes a certain time to restore the filling and also had the possibility that the sealer will not be completely filled.

In addition, as described above, there is a problem in that continuous quantitative discharge is possible only when a plurality of high output motor cylinders 31 and 36 are provided.

The background art described above is technical information possessed by the inventors for the derivation of the present invention or acquired during the derivation process of the present invention, and is not necessarily a publicly known technique disclosed to the general public before the application of the present invention.

An object of the present invention for solving the problems according to the prior art is to provide a quantitative supply device that enables the continuous quantitative discharge of high viscosity liquid such as a sealer (sealer) using a low power drive means.

According to one aspect of the present invention, there is provided a fixed quantity supplying device, which comprises a casing partitioned into a first chamber and a second chamber by a piston operating forward and backward by a driving means, and a fluid into the first chamber. A first valve installed in a first supply line for supplying, a second valve installed in a second supply line for supplying fluid to the second chamber, a third valve installed in a first discharge line for discharging fluid from the first chamber, and A fixed-quantity supply cylinder having a fourth valve installed in a second discharge line for discharging the fluid from the second chamber; A discharge part communicating with the first discharge line and the second discharge line to discharge the fluid; And controlling the reciprocating motion of the piston and opening / closing of the first to fourth valves, wherein when the piston moves in a direction in which the volume of the first chamber is reduced, the fluid discharge side line of the first chamber and the second chamber The fluid supply side line is controlled to open, and when the piston moves in a direction in which the volume of the second chamber is reduced, the fluid discharge side line of the second chamber and the fluid supply side line of the first chamber are controlled to open. And a control unit configured to control the discharge of the quantity of fluid through the discharge unit, and the piston is operated at a reference speed by receiving a force from a pressure difference between a supply side fluid and a discharge side fluid and a force from the driving means. do.

Preferably, further comprising a fluid supply line in communication with the first supply line and the second supply line for supplying a fluid to the metered supply cylinder, a pressure regulator for controlling the pressure of the fluid supplied through the fluid supply line Can be configured.

More preferably, the fluid supply line is provided with a supply pressure sensor for detecting the pressure of the fluid, the control unit controls the pressure regulator based on the detection value of the supply pressure sensor in the quantitative through the fluid supply line The pressure of the fluid supplied to the supply cylinder can be controlled.

Preferably, the piston is interlocked with the driving means via a driving rod, and the control unit has a movement speed of the piston moving in a direction in which the volume of the one chamber in which the driving rod is built is reduced. Can be controlled to be faster than the movement speed of the piston moving in the decreasing direction.

Preferably, the fluid may be any one of a high viscosity sealer, a rock panel primer (RPP), a deadner (DEADNER), and a liquid applied sound dumper (LASD).

Preferably, while the fluid is discharged through the discharge portion, the piston operated by the drive means may operate only in one direction.

In order to solve the above technical problem, the metering supply device of the present invention is formed so that the casing is partitioned into a first chamber and a second chamber by a piston operating forward and backward by a driving means, in a direction in which the volume of the first chamber is reduced. When the piston moves, the fluid discharge side line of the first chamber and the fluid supply side line of the second chamber are controlled to open, and when the piston moves in a direction in which the volume of the second chamber is reduced, the fluid of the second chamber is moved. The discharge side line and the fluid supply side line of the first chamber are controlled to be opened to receive the force from the pressure difference between the supply side fluid and the discharge side fluid together with the force from the driving means 120. It is operated at this reference speed.

Preferably, the piston may be operated by the driving means such that the fluid discharge amount per unit time due to the volume reduction of the first chamber and the fluid discharge amount per unit time due to the volume reduction of the second chamber are the same.

Preferably, the fluid may be any one of a high viscosity sealer, a rock panel primer (RPP), a deadner (DEADNER), and a liquid applied sound dumper (LASD).

Preferably, while the fluid is discharged through the fluid discharge side line of the first chamber or the fluid discharge side line of the second chamber, the piston operated by the driving means may operate only in one direction.

The present invention as described above, by using the high pressure supply side pressure and the driving force of the drive means through the proper opening and closing control of the supply line and the discharge line, by using a low output drive means to continuously maintain the high viscosity liquid such as sealer (sealer) There is an advantage that quantitative discharge is possible.

In addition, the movement speed of the piston moving in the direction of reducing the volume of the first chamber and the movement speed of the piston moving in the direction of decreasing the volume of the second chamber according to the volume of the drive rod for moving the piston differently by This has the advantage that continuous quantitative discharge is possible.

In addition, since only one low-power drive means may be used, continuous quantitative discharge is possible, so that the structure of the overall quantitative supply device can be simplified and downsized.

1 is a block diagram showing a schematic configuration of a conventional metering device.
Figure 2 is a block diagram showing a schematic configuration of a quantitative supply device according to an embodiment of the present invention.
Figure 3 is a block diagram showing the control relationship by the control unit of the metering supply according to an embodiment of the present invention.
4 is an operation diagram showing a state in which the piston of the metering device according to an embodiment of the present invention moves in the direction of decreasing the volume of the first chamber.
5 is an operation view showing a state in which the piston of the metering device according to one embodiment of the present invention moves in a direction in which the volume of the second chamber is reduced.
Figure 6 is a block diagram showing a modification of the driving means of the metering device according to an embodiment of the present invention.
7 is a view for explaining an operation example of the driving means of the metering device according to an embodiment of the present invention.

The present invention can be embodied in many other forms without departing from the spirit or main features thereof. Accordingly, the embodiments of the present invention are to be considered in all respects as merely illustrative and not restrictive.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is said to be "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that another component may exist in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, the terms "comprises", "having", "having", and the like are intended to specify the presence of stated features, integers, steps, operations, components, Steps, operations, elements, components, or combinations of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and are not construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and a duplicate description thereof will be omitted. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Figure 2 is a block diagram showing a schematic configuration of a quantitative supply device according to an embodiment of the present invention.

3 is a block diagram showing a control relationship by the control unit of the metering unit according to an embodiment of the present invention.

As shown in FIG. 2 and FIG. 3, the quantitative supply apparatus according to an exemplary embodiment of the present invention includes a quantitative supply cylinder 100, a discharge unit 200, and a controller 300.

The high-viscosity fluid supplied from the fluid supply source 10 to the metered supply cylinder 100 by the pressure pump is controlled by the pressure regulator 20 installed on the fluid supply line 131 and then the first supply line 132. ) And the second supply line 134 is supplied to the fixed quantity supply cylinder 100.

The high viscosity fluid may be, for example, a body reinforcement sealer (BPR sealer, body panel reinforcement sealer), RPP (Rock Panel Primer), Deadner (DEADNER), Liquid Applied Sound Dumper (LASD) and the like.

The fluid supply line 131 may be provided with a supply pressure sensor (s1) for detecting the pressure of the fluid.

The pressure value sensed by the supply pressure sensor s1 may be transmitted to the control unit and used for feedback control to adjust the pressure at the rear end of the pressure regulator 20.

The pressure regulator 20 may be composed of an air operated pressure regulator (APOR) 21 and an electronic positional valve (EP) 22.

The APOR 21 is installed on the fluid supply line 131 to control the actual pressure of the fluid.

The EP 22 is connected to the APOR 21 to provide air pressure to the APOR 21 to allow the APOR 21 to adjust the pressure of the fluid.

As described above, the fixed quantity supply cylinder 100 is configured such that the casing 110 is divided into the first chamber 112 and the second chamber 114 by the piston 122 operating forward and backward by the driving means 120. Is formed.

When the piston 122 moves in a direction in which the volume of the first chamber 112 decreases, the fluid discharge side line of the first chamber 112 and the fluid supply side line of the second chamber 114 are opened. Is controlled.

When the piston 122 moves in a direction in which the volume of the second chamber 114 is reduced, the fluid discharge side line of the second chamber 114 and the fluid supply side line of the first chamber 112 are opened. Is controlled.

At this time, the piston 122, the driving means so that the fluid discharge amount per unit time by the volume reduction of the first chamber 112 and the fluid discharge amount per unit time by the volume reduction of the second chamber 114 is the same ( 120).

To this end, the fixed quantity supply cylinder 100, the casing 110, the drive means 120, the first valve (v1), the second valve (v2), the third valve (v3), the fourth valve (v4) It is configured to include.

The casing 110 is configured to be partitioned into a first chamber 112 and a second chamber 114 by a piston 122 operating forward and backward by the driving means 120.

The fluid of the fluid supply source 10 may be supplied to the first chamber 112 of the casing 110 through the first supply line 132.

The fluid of the fluid supply source 10 may be supplied to the second chamber 114 of the casing 110 through the second supply line 134.

The driving means 120 is interlocked with the piston 122 in the casing 110 via the driving rod 124.

The driving means 120 is a means for linearly reciprocating the piston 122. For example, the driving rod is linear by converting the rotational motion of the servo motor with the rotating shaft into the linear motion. It may be constituted by a gear unit that moves, and may also be constituted by a known cylinder motor (or motor cylinder).

In addition, the piston 122 may be linearly reciprocated using various linear driving means using energy such as hydraulic pressure, pneumatic pressure, and electric force.

In addition, the driving means 120 may be arbitrarily selected as long as it is capable of linearly reciprocating the piston 122 in the casing 110 by using an interlocking means other than the driving rod 124.

For example, as shown in FIG. 6, the server motor 120 ′ is configured on one side, and rotates by receiving the rotational force of the server motor 120 ′ on the rotation axis of the server motor 120 ′. The rod 124 'may be configured, and the rotating rod 124' may be configured to be inserted into the piston 122 '.

The first valve v1 is installed in a first supply line 132 that supplies a fluid to the first chamber 112.

As the opening / closing of the first valve v1 is controlled by the controller 300, the fluid of the fluid supply source 10 is supplied to the first chamber 112 through the first supply line 132 or the supply is blocked. Be sure to

The second valve v2 is installed in a second supply line 134 for supplying a fluid to the second chamber 114.

As the opening / closing of the second valve v2 is controlled by the controller 300, the fluid of the fluid supply source 10 is supplied to the second chamber 114 through the second supply line 134 or the supply is blocked. Be sure to

The third valve v3 is installed in the first discharge line 136 for discharging the fluid from the first chamber 112.

As the opening / closing of the third valve v3 is controlled by the controller 300, the fluid filled in the first chamber 112 is supplied to the discharge part 200 through the first discharge line 136. Ensure that the supply is cut off.

The fourth valve v4 is installed in the second discharge line 138 which discharges the fluid from the second chamber 114.

As the opening / closing of the fourth valve v4 is controlled by the controller 300, the fluid filled in the second chamber 114 is supplied to the discharge unit 200 through the second discharge line 138. Ensure that the supply is cut off.

The first discharge line 136 may be provided with a first discharge pressure sensor s2 for detecting the pressure of the fluid discharged through the third valve v3.

The second discharge line 138 may be provided with a second discharge pressure sensor (s3) for detecting the pressure of the fluid discharged through the fourth valve (v4).

The pressure value detected by the first discharge pressure sensor s2 and the second discharge pressure sensor s3 is transmitted to the controller to adjust the pressure at the rear end of the pressure regulator 20 or to control the driving speed of the driving means 120. It can be used for feedback control.

In addition, the pressure value detected by the first discharge pressure sensor s2 and the second discharge pressure sensor s3 may be utilized for an alarm function when the discharge is abnormal in the discharge part 200.

The discharge part 200 communicates with the first discharge line 136 and the second discharge line 138 to discharge the fluid.

The fluid discharged through the discharge unit 200 is injected through injection means such as a sealer gun (not shown) to enable a sealing operation.

On the other hand, a third discharge pressure sensor (s4) for detecting the pressure of the fluid discharged through the discharge unit 200 may be provided.

The pressure value detected by the third discharge pressure sensor s4 is discharged from the fluid through the discharge part 200 in comparison with the pressure value detected by the first discharge pressure sensor s2 or the second discharge pressure sensor s3. This can be used to monitor whether this is done normally.

For example, when the fluid is discharged through the third valve v3, the pressure value detected by the third discharge pressure sensor s4 is compared with the pressure value of the first discharge pressure sensor s2, and thus the two pressures are discharged. When the values are similar within a predetermined range, it may be determined that the discharge of the fluid through the discharge unit 200 is not normal.

The pressure value detected by the third discharge pressure sensor s4 as the discharge of the fluid injected through the discharge unit 200 to the injection means is not normally performed due to a blockage of the injection means, and the like. It can be understood that the pressure value of the first discharge pressure sensor s2 is similar.

In addition, the first discharge pressure sensor s2 and the second discharge pressure sensor s3 may also be utilized as a failure diagnosis function of the first valve v1 to the fourth valve v4 during the operation of the equipment.

The control unit 300 controls the reciprocating motion of the piston 122 and opening / closing of the first valve v1, the second valve v2, the third valve v3, and the fourth valve v4. do.

The control unit 300 controls the pressure regulator 20 based on the detection value of the supply pressure sensor s1 of the fluid supplied to the fixed quantity supply cylinder 100 through the fluid supply line 131. Pressure can also be controlled.

Detailed control of the piston 122, the first valve (v1), the second valve (v2), the third valve (v3), the fourth valve (v4) by the control unit 300 is performed as follows.

The second and third valves v2 and v3 are opened during the control operation by the controller 300 so that the piston 122 moves in a direction in which the volume of the first chamber 112 is reduced. The control unit 300 may control the first and fourth valves v1 and v4 to be closed.

The first and fourth valves v1 and v4 are opened during the control operation by the controller 300 so that the piston 122 moves in a direction in which the volume of the second chamber 114 is reduced. The controller 300 may control the second and third valves v2 and v3 to be closed.

As described above, the piston 122, the first valve (v1), the second valve (v2), the third valve (v3), the fourth valve (v4) is controlled by the control unit 300, the discharge Quantitative fluid may be discharged through the unit 200.

At this time, the control unit 300 is a direction in which the movement speed of the piston 122 moving in the direction in which the volume of the one side chamber in which the driving rod 124 is built is reduced is the volume of the other side chamber. Control to be faster than the movement speed of the piston 122 moving to.

This is to make the fluid discharge amount per unit time due to the decrease in the volume of the one side seal and the fluid discharge amount per unit time due to the decrease in the volume of the other seal.

On the other hand, in the description of the quantitative supply device according to an embodiment of the present invention as described above, the fluid has been described only for the body reinforcement sealer, in addition to the sealer RPP (Rock Panel Primer), Deadner (DEADNER), LASD Liquid Applied Sound Dumper, paint and other high viscosity liquids are also applicable.

4 is an operation diagram illustrating a state in which the piston 122 of the metering supply device according to one embodiment of the present invention moves in a direction in which the volume of the first chamber 112 is reduced.

5 is an operation diagram showing a state in which the piston 122 of the metering device according to an embodiment of the present invention moves in a direction in which the volume of the second chamber 114 is reduced.

The fluid may be supplied to the pressure regulator 20 at a pressure of approximately 150 bar to 250 bar from the fluid source 10, and the fluid supplied to the pressure regulator 20 may be adjusted to a pressure of approximately 30 to 150 bar to supply the fixed quantity supply cylinder 100. Can be supplied.

First, an operating state in which the piston 122 moves in a direction in which the volume of the first chamber 112 is reduced will be described with reference to FIG. 4.

When the controller 300 controls the movement direction of the piston 122 in the direction in which the volume of the first chamber 112 is reduced, the controller 300 is the first valve (v1) and the fourth valve (v4) It is controlled to close, and the second valve v2 and the third valve v3 are controlled to open.

Therefore, the fluid adjusted to a pressure of approximately 30 to 150 bar through the pressure regulator 20 is supplied to the second chamber 114 through the open second valve v2 and the second supply line 134 and closed at the same time. The fluid supply to the first chamber 112 through the first supply line 132 is blocked by the first valve v1.

The pressure of the fluid supplied to the second chamber 114 is adjusted to a constant reference pressure within the range of 30 ~ 150bar by the pressure regulator 20 according to the amount of fluid, the flow rate of the fluid.

In addition, the fluid filled in the first chamber 112 through the open third valve v3 and the first discharge line 136 becomes dischargeable and is discharged by the fourth valve v4 closed. Outflow of the second chamber 114 through line 138 is blocked.

In this state, the pressure of the fluid may act in the direction in which the volume of the first chamber 112 is reduced in the piston 122 due to the pressure difference between the supply side of the high pressure and the discharge side of the low pressure lower than the supply side pressure.

When the piston is forced to move in a direction in which the volume of the first chamber 112 is reduced by the pressure action of the fluid, the driving means may move the piston with a small output.

For example, assuming that the piston 122 is freely movable, if the moving speed of the piston 122 by the pressure action of the fluid is a reference speed suitable for discharging a predetermined discharge amount, the piston ( The output of the drive means for moving 122 is hardly required.

On the other hand, if the moving speed of the piston 122 by the pressure action of the fluid is a speed for discharging a larger amount than a predetermined discharge amount, that is, "speed as fast as α" than the reference speed, actually moving the piston 122 The drive means for making it necessary to provide a force in a direction opposite to the direction of pressure action of the fluid by " α " so that " speed as α " becomes the reference velocity.

On the other hand, if the moving speed of the piston 122 due to the pressure action of the fluid is a speed for discharging an amount less than a predetermined discharge amount, that is, "speed as slow as β" than the reference speed, actually moving the piston 122 The drive means for making it necessary to provide a force in the same direction as the pressure action direction of the fluid by "β" so that "speed as slow as β" becomes the reference speed.

On the other hand, as described above, the force in the direction opposite to the pressure action direction of the fluid by "α", the force in the same direction as the pressure action direction of the fluid by "β" is a conventional motor cylinder (Fig. 1). Can be seen as a relatively small force compared to the output of.

Specifically, the prior art motor cylinders 31 and 36 of FIG. 1 provide a force for operating at a reference speed and a force for speeds α and β corresponding to a deviation from the reference speed, The driving means receives the force for operating at the reference speed by the pressure action of the fluid, and only the force for the speed (α, β) corresponding to the deviation from the reference speed is required to operate the piston as a low output driving means. Can be.

Next, an operating state in which the piston 122 moves in the direction in which the volume of the second chamber 114 is reduced will be described with reference to FIG. 5.

When the controller 300 controls the movement direction of the piston 122 in the direction in which the volume of the second chamber 114 is reduced, the controller 300 is the second valve (v2) and the third valve (v3) It is controlled to close, and the first valve (v1) and the fourth valve (v4) is controlled to open.

Therefore, the fluid regulated at a pressure of approximately 30 to 150 bar through the pressure regulator 20 is supplied to the first chamber 112 through the first valve v1 and the first supply line 132 which are opened and closed at the same time. The fluid supply to the second chamber 114 through the second supply line 134 is blocked by the second valve v2.

In addition, the fluid discharged to the second chamber 114 through the opened fourth valve v4 and the second discharge line 138 becomes dischargeable, and is discharged first by the closed third valve v3. Outflow of the first chamber 112 through line 136 is blocked.

In this state, the pressure of the fluid may act in a direction in which the volume of the second chamber 114 of the piston 122 decreases due to the pressure difference between the supply side of the high pressure and the discharge side of the low pressure lower than the supply side pressure.

Therefore, as in the case of the fluid discharge of the first chamber 112, by using the high pressure supply side pressure and the driving force of the drive means 120 through the proper opening and closing control of the supply line and the discharge line, the low output drive means 120 ), It is possible to continuously quantitatively discharge the fluid, and detailed description thereof will be omitted.

On the other hand, the control unit 300 is a direction in which the movement speed of the piston 122 moving in the direction in which the volume of the one side seal in which the driving rod 124 is built is reduced in the volume of the other side seal. It may be controlled to be faster than the movement speed of the piston 122 moving to.

Accordingly, the amount of fluid discharged per unit time due to the decrease in volume of the one side seal may be the same as the amount of fluid discharged per unit time due to the decrease in the volume of the other seal.

For example, the piston 300 moves in the direction in which the control unit 300 moves the piston 122 in the direction in which the volume of the first chamber 112 is decreased and in the direction in which the volume of the second chamber 114 is reduced. The volume of the cylinder is calculated on the basis of the movement completion state, and the speed at which the piston 122 moves in the direction in which the volume of the first chamber 112 decreases based on the calculated value and that of the second chamber 114 The speed at which the piston 122 moves in the direction of decreasing volume is controlled.

On the other hand, as shown in Figure 7, for example, the injection direction of the fluid injected to the injection means through the discharge unit 200 is a-> b-> c-> d-> e-> f-> g This can be done in the order-> h-> i-> j-> k.

The fluid is discharged through the discharge unit 200 in the P1 to P2 sections, the P3 to P4 sections, the P5 to P6 sections, and the P7 to P8 sections, and are arranged between P2 and P3, between P4 and P5, and between P6 and P7. In the section, the discharge of the fluid through the discharge unit 200 may be stopped.

At this time, during the discharge of the fluid through the discharge unit 200 (P1 ~ P2 section, P3 ~ P4 section, P5 ~ P6 section, P7 ~ P8 section) the piston by the drive means 120 in one direction It is desirable to be controlled to operate only.

This is because the discharge of the fluid through the discharge unit 200 may be temporarily stopped at a time point when the piston by the driving means 120 is switched from one direction to the other direction.

For example, when the total volume of the cylinder is 1000cc, the discharge amount of the P1 to P2 sections is 100cc, the discharge amount of the P3 to P4 sections is 150cc, the discharge amount of the P5 to P6 sections is 70cc, and the discharge amount of the P7 to P8 sections is 80cc. Since the total of the fluid discharged in all sections is 400cc, the piston in each section may control the forward or backward to complete the ejection over the entire section.

As another example, when the total volume of the cylinder is 300cc, the discharge amount of the P1 to P2 sections is 100cc, the discharge amount of the P3 to P4 sections is 150cc, the discharge amount of the P5 to P6 sections is 70cc, and the discharge amount of the P7 to P8 sections is 80cc. The discharge may be completed over the entire section by controlling the piston to move forward in the P1 to P2 sections and the P3 to P4 sections, and to reverse in the P5 to P6 sections and the P7 to P8 sections.

As described above, the quantitative supply device of the present invention allows continuous quantitative discharge of fluid with a small driving force as compared to the conventional quantitative supply device.

For example, the conventional metering device is required a plurality of driving units having a horsepower, but the metering device of the present invention is capable of continuous quantitative discharge of the fluid only by the drive means 120 having a 0.5 horsepower, Compared to the fixed-quantity supply device, it is possible to discharge the fluid with only 1/2 or less driving force.

Although the present invention has been described with reference to the preferred embodiments thereof with reference to the accompanying drawings, it will be apparent to those skilled in the art that many other obvious modifications can be made therein without departing from the scope of the invention. Accordingly, the scope of the present invention should be interpreted by the appended claims to cover many such variations.

100: quantity supply cylinder 110: casing
112: first room 114: second room
120: drive means 122: piston
124: drive rod 132: first supply line
134: second supply line 136: first discharge line
138: second discharge line 200: discharge unit
300: control unit v1: the first valve
v2: second valve v3: third valve
v4: fourth valve

Claims (10)

The casing 110 and the first chamber 112 are partitioned into a first chamber 112 and a second chamber 114 by a piston 122 which is moved back and forth by the driving means 120. A first valve v1 installed in a first supply line 132 for supplying a fluid, a second valve v2 installed in a second supply line 134 for supplying a fluid to the second chamber 114, and the first valve A third valve (v3) installed in the first discharge line (136) for discharging the fluid from the first chamber (112), and a fourth valve installed in the second discharge line (138) for discharging the fluid from the second chamber (114) a fixed-quantity supply cylinder 100 provided with v4;
A discharge part 200 communicating with the first discharge line 136 and the second discharge line 138 to discharge the fluid; And
While controlling the reciprocating motion of the piston 122 and opening and closing of the first to fourth valves (v1, v2, v3, v4), the piston 122 moves in a direction in which the volume of the first chamber 112 is reduced. In this case, the fluid discharge side line of the first chamber 112 and the fluid supply side line of the second chamber 114 are controlled to be opened, and the piston 122 is moved in a direction in which the volume of the second chamber 114 is reduced. During the movement, the fluid discharge side line of the second chamber 114 and the fluid supply side line of the first chamber 112 are controlled to be opened so that the quantity of fluid is discharged through the discharge part 200. The control unit 300 is configured to include, and is provided with a force by the pressure difference between the supply side fluid and the discharge side fluid supplied from the fluid supply source 10 by the pressure pump and the force from the drive means 120 Metering supply device, characterized in that the piston 122 is operated at a reference speed. The method of claim 1,
In communication with the first supply line 132 and the second supply line 134 is supplied through the fluid supply line 131, the fluid supply line 131 for supplying a fluid to the fixed-quantity supply cylinder 100 Metering supply device, characterized in that further comprises a pressure regulator 20 for controlling the pressure of the fluid. The method of claim 2,
The fluid supply line 131 is provided with a supply pressure sensor for detecting the pressure of the fluid, the control unit 300 controls the pressure regulator 20 based on the detection value of the supply pressure sensor to supply the fluid Metering supply device characterized in that for controlling the pressure of the fluid supplied to the metered supply cylinder 100 through the line (131). The method of claim 1,
The piston 122 is interlocked with the driving means 120 via the driving rod 124, and the control unit 300 is a direction in which the volume of the one-side seal in which the driving rod 124 is incorporated is reduced. Quantitative supply device characterized in that for controlling the movement speed of the piston (122) to move to be faster than the movement speed of the piston (122) moving in the direction in which the volume of the other chamber is reduced. 5. The method according to any one of claims 1 to 4,
The fluid is a high viscosity sealer (sealer), RPP (Rock Panel Primer), Deadner (DEADNER), LASD (Liquid Applied Sound Dumper) characterized in that any one of the supply device. 5. The method according to any one of claims 1 to 4,
While the fluid is discharged through the discharge unit 200, the piston 122, which is operated by the drive means 120 operates only in one direction. The casing 110 is formed to be partitioned into the first chamber 112 and the second chamber 114 by the piston 122 operating forward and backward by the driving means 120.
When the piston 122 moves in a direction in which the volume of the first chamber 112 is decreased, the fluid discharge side line of the first chamber 112 and the fluid supply side line of the second chamber 114 are opened. Become,
When the piston 122 moves in a direction in which the volume of the second chamber 114 is decreased, the fluid discharge side line of the second chamber 114 and the fluid supply side line of the first chamber 112 are controlled to open. Became,
The piston 122 is operated at a reference speed by being supplied with the force from the pressure difference between the supply side fluid and the discharge side fluid supplied from the fluid supply source 10 by the pressure pump and the force from the driving means 120. A fixed quantity supply device characterized by the above-mentioned. The method of claim 7, wherein
The piston 122 has the driving means 120 such that the fluid discharge amount per unit time due to the volume reduction of the first chamber 112 and the fluid discharge amount per unit time due to the volume reduction of the second chamber 114 are the same. Metering supply device characterized in that the operation by. The method according to claim 7 or 8,
The fluid is a high viscosity sealer (sealer), RPP (Rock Panel Primer), Deadner (DEADNER), LASD (Liquid Applied Sound Dumper) characterized in that any one of the supply device. The method according to claim 7 or 8,
While the fluid is discharged through the fluid discharge side line of the first chamber 112 or the fluid discharge side line of the second chamber 114, the piston 122 operated by the driving means 120 moves in one direction. Quantitative supply device, characterized in that only operating.

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