KR20210131109A - Liquid supply apparatus - Google Patents

Abstract

The present invention relates to an apparatus for injecting a fixed amount of liquid of packaging equipment which injects a liquid packaging object into a packaging body to package the packaging object, and adjusts the stroke distance of a piston through a fixed amount adjusting means to change the forward/backward distance of a pressing rod injecting liquid to adjust the volume of the liquid to a required fixed amount to accurately inject the fixed amount of the liquid. To achieve the objective, according to the present invention, the apparatus for injecting a fixed amount of liquid of packaging equipment comprises: a nozzle including a liquid supply port, a liquid filling unit, a liquid discharge unit, and a check valve provided on the liquid discharge unit; a housing coupled to the rear end of the nozzle, and including a pressing rod having a pressing head inserted into the liquid filling unit; a cylinder coupled to the rear end of the housing, and including a piston coupled to the rear end of the pressing rod to move forward and backward; and a fixed amount adjusting means adjusting the stroke distance of the piston.

Description

Liquid metering device for packaging equipment {LIQUID SUPPLY APPARATUS}

The present invention is a liquid quantitative injection device of a packaging facility for injecting and packaging a liquid-type package into a package, by adjusting the stroke distance of the piston through the quantitative adjustment means, by changing the forward and backward distance of the pressure rod for injecting the liquid, It relates to a liquid metering device for packaging equipment that can accurately inject liquid by adjusting the volume of liquid as needed.

In general, liquid-type packaging such as beverages or pharmaceuticals can be injected with various pouches or containers by a quantitative supply device, and for this purpose, devices for automatically supplying the packaging and injecting the liquid have been developed.

In particular, the amount of liquid usually injected into a pouch or container is configured so that a certain amount of liquid can be injected according to the opening and closing of a valve using a flow sensor or a timer. equipment is being developed.

Representatively, Japanese Patent Laid-Open No. Hei 5-229595 discloses a liquid filling packaging device capable of filling carbonated beverages with high precision. Specifically, the container is automatically supplied with the container laid out on the rotary table, and the container is set A structure is disclosed in which a quantity of carbonated liquid can be supplied by a control means and a valve of a carbonate liquid filling means that move up and down when reaching the position.

However, the conventional quantitative supply device such as the Japanese Patent Laid-Open Patent has a problem in that the amount of liquid injected into the container is not quantified when a sensor malfunction or an error in the control means occurs due to the structure of the electronically opened and closed valve. Accordingly, in actual packaging sites, there is a problem in that the liquid quantity injection defect occurs very frequently, resulting in lower productivity.

Accordingly, the present invention has been devised to solve the above problems,

A fixed amount of liquid can be injected into a pouch or container in a continuously moving state, and the amount of liquid injected and the opening and closing of the valve for liquid injection are made by mechanical manipulation to increase operational reliability and discharge with a check valve An object of the present invention is to provide a liquid metering device for packaging equipment that can prevent the backflow of liquid.

In order to achieve the above object, the liquid quantitative injection device of the packaging equipment according to the present invention,

In the liquid metering device of a packaging facility for injecting and packaging a liquid-type package into a package,

a nozzle including a liquid supply port, a liquid filling part, a liquid discharge part, and a check valve provided in the liquid discharge part;

a housing including a pressure rod coupled to the rear end of the nozzle and having a pressure head inserted into the liquid filling part;

a cylinder coupled to the rear end of the housing and including a piston coupled to the rear end of the pressure rod to move forward and backward; and

It characterized in that it comprises a; quantitative adjustment means for adjusting the stroke distance of the piston.

And the liquid metering device of the packaging equipment according to the present invention,

The pressure rod includes a coupling protrusion protruding from the front end, and the pressure head is inserted into the coupling protrusion and coupled so as to be able to move back and forth,

The pressure head includes one or more supply holes formed through the front and rear, and when the pressure rod moves forward, the supply hole is closed with the front end of the pressure rod while the pressure head moves backward to discharge the liquid of the filling part to the discharge part, When the pressing rod moves backward, the supply hole is opened while the pressing head advances, and the liquid injected into the supply port is filled in the filling part.

Furthermore, in the liquid metering device of the packaging facility according to the present invention,

The piston is coupled through the front and rear of the cylinder,

The quantitative control means,

A guide tube coupled to the protruding hole at the rear end of the cylinder and having a screw hole,

It is fitted into the screw hole and is screw-coupled so as to be capable of moving forward and backward, and it characterized in that it comprises a control rod having a stopping head in contact with the pressing rod moving backward.

In addition, in the liquid metering device of the packaging facility according to the present invention,

The nozzle is

a body portion coupled to the front end of the housing and having the liquid supply port;

a tubular body coupled to the front end of the body portion and having the liquid filling portion;

A nozzle head unit coupled to the front end of the tube body and having the liquid discharge unit and a check valve;

It characterized in that it comprises a detachable member for making the nozzle head detachable from the tube body.

Liquid metering device for packaging equipment according to the present invention,

By changing the stroke distance of the piston that moves the pressure rod forward and backward into a mechanical structure, the liquid can be continuously injected as much as necessary, and in particular, through the check valve of the nozzle and the check valve structure of the pressure rod and pressure head, the liquid It is possible to fill and inject a controlled amount of liquid in an accurate amount while preventing the backflow of

After horizontal installation of the liquid metering device of the present invention in packaging facilities of various structures, it can be easily connected to the nozzle and installed, enabling universal use,

The left and right rotation is prevented when the pressure rod moves forward and backward, so it has excellent operational stability.

It is easy and convenient to attach and detach the nozzle parts, and there is an effect of sealing the micro-gap between the nozzle parts to prevent the liquid from leaking.

1 and 2 are internal projections for each operating state of the liquid metering device according to the present invention.
Figure 3 is an exploded side view showing the pressing rod of the present invention.
4 is a sample photograph of the liquid metering device according to the present invention.
5 is a sample photograph of a detachable member according to the present invention.
6 is a front view and a cross-sectional view of the main part for explaining the airtight means according to the present invention.

The present invention is intended to be described in detail in the text of the embodiment (態樣, aspect) (or embodiments) can be applied to various changes and can have various forms. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

In each drawing, the same reference numerals, particularly the tens and one digit, or the same tens, one, and alphabetic reference numerals indicate members having the same or similar functions, and unless otherwise specified, each The member indicated by the reference sign may be understood as a member conforming to these standards.

In addition, in each drawing, components are expressed in exaggeratedly large (or thick) or small (or thin) in size or thickness in consideration of convenience of understanding, or simplified, but the protection scope of the present invention is limited by this. it shouldn't be

The terminology used herein is only used to describe a specific embodiment (aspect, aspect, aspect) (or embodiment), and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as comprises or consists of are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification is present, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

~1~, ~2~, etc. described in the present specification will be referred to only to distinguish that they are different components, and are not limited to the order of manufacture, and their names in the detailed description and claims of the invention are may not match.

In describing the liquid metering device of the packaging facility according to the present invention, for convenience, if an approximate direction standard that is not strict is specified with reference to FIG. In this case, the direction in which gravity acts is defined as the direction as it is seen, up, down, left and right, and the directions are specified and described according to this standard unless otherwise specified in the detailed description and claims related to other drawings.

Hereinafter, a liquid metering device for a packaging facility according to the present invention will be described with reference to the accompanying drawings.

The present invention relates to a liquid metering device for packaging equipment that injects and packs a liquid-type package into a package (pouch or general container, etc.), and as shown in FIGS. 1 to 4,

a nozzle (N) including a liquid supply port (11), a liquid filling unit (21), a liquid discharging unit (31), and a check valve (32) provided in the liquid discharging unit (31);

a housing 50 including a pressure rod 51 coupled to the rear end of the nozzle N and having a pressure head 52 inserted into the liquid filling part 21;

a cylinder 60 coupled to the rear end of the housing 50 and including a piston 61 coupled to the rear end of the pressure rod 51 to move forward and backward; and

and a quantitative adjustment means (70) for adjusting the stroke distance of the piston (61).

The nozzle (N) is connected to the liquid injector of the packaging facility to inject the liquid,

The body portion 10 coupled to the front end of the housing 50 and having the liquid supply port 11,

A tubular body 20 coupled to the front end of the body 10 and having the liquid filling part 21,

A nozzle head unit 30 coupled to the front end of the tube body 20 and having the liquid discharge unit 31 and a check valve 32, and

and a detachable member 40 for detachably detaching the nozzle head 30 from the tubular body 20 .

The body portion 10 has a block shape, and the supply port 11 is opened on the upper surface, and the flow path with the front opening is connected back and forth with the liquid filling portion 21 of the tubular portion 20, as a rear mounting hole. The pressing rod 51 is fitted and the pressing head 52 is coupled to be inserted on the filling part 21 .

The tubular part 20 forms a liquid filling part 21 between the body part 10 and the nozzle head part 30, and in the drawing, the front end of the tubular part 20 and the nozzle head part 30 An embodiment including an auxiliary tube body portion 20A that connects the distance between the rear ends to be extended is shown representatively, and the number, shape, etc. of these auxiliary tube portions 20A vary depending on the structure of the packaging facility in which the present invention is installed may be changed or omitted.

The front end and auxiliary tube portion 20A of the tube portion 20 are provided with flange portions 22 protruding outward, respectively, at both front and rear ends, and the flange portions 22 and 34 in contact with each other are the detachable member 40 . While being in close contact with each other, the tube body 20 (and the auxiliary tube body 20A) and the nozzle head 30 are coupled to each other.

The nozzle head unit 30 is provided with the discharge unit 31 at the front end and the inlet 31a for liquid injection at the rear end so that the discharge unit 31 and the inlet 31a communicate with each other, The check valve 32 selectively opens and closes the inlet 31a to prevent backflow after the liquid is injected.

Specifically, the check valve 32 is a hemispherical member protruding toward the inlet 31a, and is advanced toward the rear inlet 31a by a spring 33 supported on the inner surface of the front end of the nozzle head 30 . elastically supported to

This check valve 32 is pushed into the nozzle head part 30 by the pressure of the liquid injected into the inlet 31a to open the inlet 31a so that the liquid is discharged to the discharge part 31, When the discharge pressure of the liquid is relieved after the completion of the quantitative injection of the liquid, the inlet 31a is closed while returning to the original position by the spring 33, and the nozzle head part ( 30) It helps to meter the liquid by preventing backflow of the liquid.

In addition, the nozzle head portion 30 is provided with a flange portion 34 corresponding to the flange portion 22 of the tubular portion 20 at the rear end portion, the flange portion 22, 34 by the detachable member 40 are joined as they come together.

Then, the housing 50 guides the forward and backward movement of the pressing rod 51 , and the pressing rod 51 is mounted on a slide formed through the front and rear, and the pressing rod 51 is moved by the piston 61 . go back and forth

The pressure rod 51 includes a coupling protrusion (51a) protruding from the front end, the pressure head 52 is fitted into the coupling protrusion (51a) and coupled so as to be able to move forward and backward,

The pressure head 52 includes one or more supply holes 52c formed through the front and rear sides, so that when the pressure rod 51 moves forward, the pressure head 52 moves backward while the supply holes 52c become the pressure rods. It is sealed with the tip of 51 to discharge the liquid in the filling part 21 to the discharge part 31, and when the pressure rod 51 moves backward, the pressure head 52 advances and the supply hole ( 52c) is opened, and the liquid injected into the supply port 11 is filled in the filling part 21 .

The pressure rod 51 is provided with a groove at the distal end to which the O-ring 55 is fitted, and a bolt coupling hole 51b having an open front end in the longitudinal direction of the coupling protrusion 51a is provided.

In addition, the pressure rod 51 is provided with a fastening groove (51c) at the rear end is coupled to the piston (61) through a coupling block (51A) to be described later.

The pressing head 52 is provided with a coupling hole 52a into which the coupling protrusion 51a is fitted in the center, and is coupled to the coupling protrusion 51a with a fixing bolt 54 fastened to the bolt coupling hole 51b. and a plurality of the supply holes 52c are provided on the circumference of the coupling hole 52a, wherein the front and rear lengths of the coupling protrusions 51a are formed to be larger than the front and rear thicknesses of the pressing head 52. It is possible to move forward and backward of the pressing head 52 about the coupling protrusion 51a as an axis.

In addition, the pressure head 52 is provided with an insertion groove (52b) concave in the shape of a skirt at the rear end, the front end of the pressure rod (51) is coupled to be insertable into the insertion groove (52b).

The pressure head 52 is fitted with an O-ring in the groove of the outer circumferential surface so that the O-ring is in close contact with the inner wall of the filling part 21 , thereby sealing the front and rear spaces of the pressure head 52 .

And when the pressure rod 51 moves backward, the pressure head 52 advances by the frictional resistance of the O-ring and is spaced apart from the pressure rod 51 to open the supply hole 52c, and thus the pressure rod ( 51), the liquid introduced into the body 10 is filled in the filling part 21 through the open supply hole 52c.

Conversely, when the pressure rod 51 moves forward, the pressure head 52 moves backward by the frictional resistance of the O-ring, and the front end of the pressure rod 51 is inserted into the insertion groove 52b, and the pressure rod ( 51), the supply hole 52c is closed, and accordingly, when the pressure rod 51 advances, the liquid in the filling part 21 is pressed forward by the pressure head 52 to the nozzle N. is finally discharged.

On the other hand, the housing 50 includes a guide groove 53 formed in the longitudinal direction by opening one side of the slide part,

The pressure rod 51 includes a stopper 64 for preventing rotation coupled to be fitted into the guide groove 53 on one side thereof.

The stopper 64 prevents the pressing rod 51 from rotating left and right due to frictional resistance of the O-ring, etc. when the pressing rod 51 moves forward and backward.

An unexplained reference numeral 51A is a coupling block 51A connecting the pressure rod 51 and the piston 61 , and guides the forward and backward linear motion of the pressure rod 51 on the slide part of the housing 50 .

Next, as the cylinder 60, a pneumatic cylinder having a piston 61 moving forward and backward by pneumatic pressure is used, and the specific structure or operating principle of such a pneumatic cylinder is a well-known technique, and for the convenience of understanding, the drawings of the present specification , the detailed internal structure providing the front and rear pressure of the piston 61 is omitted.

Specifically, the piston 61 is coupled through the front and rear of the cylinder 60,

The quantitative control means 70,

A guide pipe 71 coupled to the protruding hole at the rear end of the cylinder 60 and having a screw hole,

It is fitted into the screw hole and is screw-coupled to enable forward and backward movement, and includes a control rod 72 having a stopping head 72a in contact with the pressing rod 51 moving backward.

The guide tube 71 is formed through a screw hole in front and back, and a male screw portion provided on an outer circumferential surface of the control rod 72 is inserted into the screw hole and is screw-coupled.

In addition, the control rod 72 is provided with a gripping portion 72b at the rear end, and the user holds the grip portion 72b and rotates it left and right to determine the front and rear positions of the control rod 72 in the guide tube 71 . Can be fine-tuned.

The control rod 72 is in contact with the front end of the stopping head 72a at the rear end of the piston 61, and accordingly, when the front and rear positions of the control rod 72 are adjusted, the stopping head 72a is in contact with the control rod 72. Accordingly, the backward distance of the piston 61 is changed, and accordingly, the forward and backward stroke distances of the piston 61 and the pressure rod 51 can be mechanically adjusted.

When the forward and backward (more strictly, backward) stroke distances of the piston 61 and the pressure rod 51 are adjusted, the capacity in the filling part 21 secured while the pressure head 52 moves backward is adjusted, Through this, it is possible to easily adjust the amount of liquid discharged by one advance of the pressure rod 51 to suit the needs.

In addition, the quantitative control means 70 further includes a protective cap 73 extrapolated to the guide tube 71 while the control rod 72 is fitted.

The protective cap 73 has a rear end connected to the front surface of the gripping part 72b to be supported by the male screw of the control rod 72 while moving forward and backward together with the control rod 72 when the control rod 72 rotates left and right. protect wealth

In addition, although not shown in the drawing, a scale subdivided into an appropriate capacity in the longitudinal direction is displayed on one outer circumferential surface of the guide tube 71, and the scale is identified through the protective cap 73 when the control rod 72 moves forward and backward. By making it possible, it is possible to more accurately and precisely control the volume of the liquid injected into the filling part 21 .

Next, the front end of the tube body 20 (and both ends of the auxiliary tube portion 20A) and the rear end of the nozzle head 30 are provided with flange portions 22 and 34 protruding outward and in contact with each other,

The detachable member 40,

Doedoe having a fitting groove 41 into which the flange portions 22 and 34 in contact with each other are fitted on the inner circumferential surface, the plurality of body portions 42 are hinged to each other to pivotally open and close, and any one of the adjacent body portions 42 A fastening ring (40R) including a first fastening part (42a) provided at one end and a second fastening part (42b) provided at the other end of the other one of the adjacent body parts (42);

A screw rod 44 having one end hinged to the first fastening part 42a and rotating to fit into the second fastening part 42b;

It includes a tightening nut 45 for tightening the first and second fastening parts 42a and 42b while being extrapolated to the other end of the screw rod 44 and screwed together.

The fastening ring 40R is an assembly of body parts 42 having an arc shape of a part of a circular shape, and each body part 42 has a fitting groove 41 having an open inner circumferential surface, and adjacent body parts 42 . They are hinge-coupled to the pivoting shaft 43 and can be opened and closed while being closed or opened, and the first and second fastening parts 42a and 42b protrude from both sides of the outermost body 42, respectively.

The first and second fastening parts 42a and 42b have a 'C' shape with an upper end and an open side part, and the screw rod 44 is hinged to the first fastening part 42a so as to be rotatably opened and closed. .

As the tightening nut 45, a known butterfly nut or the like may be used, and the body portions 42 are retracted so that each flange portion 22, 34 is fitted into the fitting groove 41 of the fastening ring 40R. Then, when the tightening nut 45 is tightened, the first and second fastening parts 42a and 42b are tightened while in close contact, and the tubular body 20 (including the auxiliary tubular body 20A) by the detachable member 40 and It is possible to combine the nozzle head part 30,

After loosening the tightening nut 45, when the screw rod 44 is rotated to be separated from the second fastening part 42b, the body parts 42 are opened and the flange parts 22 and 34 are inserted into the fitting grooves ( 41), separation of the tube body 20 and the nozzle head 30 is possible.

On the other hand, when the thickness of the flange portions 22 and 34 and the width of the fitting groove 41 do not match due to a processing error, etc., the flange portions 22 and 34 do not adhere to each other and the tube body 20 and the nozzle A micro-gap may be generated between the head parts 30 and the liquid may leak.

Accordingly, the present invention introduces an airtight means 80 for preventing the occurrence of micro-gaps through the close contact of the fastening rings 40R.

Specifically, as shown in Figure 6,

The body portion 42 is composed of a pair of powders 42A separated back and forth while forming the fitting groove 41 and coupled so as to be able to move forward and backward in the longitudinal direction of the rotation shaft 43,

Further comprising an airtight means 80 for airtightening between the flange portions 22 and 34 by closely adhering the pair of powders 42A to each other,

A pair of pressure rings 81 in which the rotation shaft 43 is fitted and capable of moving forward and backward while covering the front and rear surfaces of the fastening ring 40R in a shape corresponding to the fastening ring 40R,

A cam portion (81b) connected to one end of each pressing ring 81 and formed to be inclined upwardly from the second fastening part (42b) toward the first fastening part (42a) toward the first fastening part (42a) while the outer surface is opened ( a tightening portion 81A having 81a);

A pair in which the screw rod 44 penetrates and is coupled to move forward and backward in the longitudinal direction of the screw rod 44 by the tightening nut 45, and is inserted into each tightening portion 81A to press the cam portion 81a Further comprising a pressing member 82 having a pressing protrusion 81a of

When the tightening nut 45 is tightened, as the pressing member 82 advances, the pair of pressing rings 81 move closer to each other, and the pair of powders 42A are collected and the fitting groove 41 ) becomes narrower.

The pressing ring 81 has a circular shape corresponding to the fastening ring 40R and has a width greater than the inner and outer widths of the body portion 42 .

The tightening portion 81A protrudes in a shape corresponding to the first and second fastening portions 42a and 42b and is connected to the pressing ring 81, and the outer surface (front surface) of each of the tightening portions 81A. or the rear side) of the cam portion 81a having a groove shape is formed in the left and right horizontal directions.

The cam portion 81a is a 'V'-shaped groove in which the inner bottom surface 81b is inclined upwardly outward along the longitudinal direction.

The pressing member 82 has a 'C' shape and has a through hole 82b into which the screw rod 44 is fitted, and the pressing protrusion 81a protrudes from each inner surface of the both sides of the connection piece, and such The pressing protrusion 81a is engaged with both sides of the cam portion 81a in a 'T' shape.

This airtight means 80 is, first, when the tightening nut 45 is loosened, the pressing member 82 is pulled out from the tightening parts 81A so that the pressing protrusion 81a is located at the lowest point of the cam part 81a. As the tightening part (81A) becomes loose between them, the fastening ring (40R) can be detached from the flange parts (22, 34) in this state.

And when the tightening nut 45 is tightened, the pressing member 82 is fitted to the tightening portions 81A and approaches, the pressing projection 81a moves to the highest point of the cam portion 81a, and the pressing projection 81a By pressing the inner powder (42A) while tightening between the tightening parts (81A), the flange parts (22, 34) of the fitting groove (41) are in close contact with each other, thereby preventing leakage of liquid due to the generation of micro-gap can be prevented

In the above description of the present invention, with reference to the accompanying drawings, the liquid metering device of the packaging equipment has been mainly described, but the present invention is capable of various modifications, changes and substitutions by those skilled in the art, and these modifications, changes and substitutions are the present invention. should be construed as belonging to the scope of protection of

N: Nozzle
10: body part 11: supply port
20: tube body 21: filling part
22: flange part 30: nozzle head part
31: discharge part 32: check valve
40: detachable member 40R: fastening ring
41: fitting groove 42: body part
43: rotation shaft 44: screw rod
45: tightening nut 50: housing
51: pressure rod 52: pressure head
60: cylinder 61: piston
70: quantitative control means 71: guide tube
72: control rod 73: protective cap
80: confidential means

Claims (4)

In the liquid metering device of a packaging facility for injecting and packaging a liquid-type package into a package,
a nozzle including a liquid supply port, a liquid filling part, a liquid discharge part, and a check valve provided in the liquid discharge part;
a housing including a pressure rod coupled to the rear end of the nozzle and having a pressure head inserted into the liquid filling part;
a cylinder coupled to the rear end of the housing and including a piston coupled to the rear end of the pressure rod to move forward and backward; and
A liquid metering device for packaging equipment comprising a; quantitative control means for adjusting the stroke distance of the piston.
The method of claim 1,
The pressure rod includes a coupling protrusion protruding from the front end, and the pressure head is fitted into the coupling protrusion and coupled so as to be able to move back and forth,
The pressure head includes one or more supply holes formed through the front and rear, and when the pressure rod moves forward, the supply hole is closed with the tip of the pressure rod while the pressure head moves backward to discharge the liquid of the filling part to the discharge part, When the pressure rod moves backward, the supply hole is opened while the pressure head advances, and the liquid injected into the supply port is filled in the filling part.
The method of claim 1,
The piston is coupled through the front and rear of the cylinder,
The quantitative control means,
A guide tube coupled to the protruding hole at the rear end of the cylinder and having a screw hole,
and a control rod fitted into the screw hole and screw-coupled to enable forward and backward movement, and a control rod having a stopping head in contact with the retracting pressure rod.
4. The method according to any one of claims 1 to 3,
The nozzle is
a body portion coupled to the front end of the housing and having the liquid supply port;
a tubular body coupled to the front end of the body portion and having the liquid filling portion;
A nozzle head unit coupled to the front end of the tube body and having the liquid discharge unit and a check valve;
Liquid metering device for packaging equipment, characterized in that it comprises a detachable member for detachably detaching the nozzle head from the tubular body.

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