KR102361185B1 - Nozzle device for water bottle inspection equipment - Google Patents

Abstract

The present invention relates to a nozzle device that is mounted on the inlet side to perform an inspection in a process for determining whether a container containing beverage or bottled water is defective. a body 1100 having an external air connection part for selectively introducing external air into the compressed space and the compressed space; An upper member 1410, a portion of which is inserted into the inner periphery of the body, a lower member 1430 detachable from the inlet side of the container, and an exterior 1230 disposed through the upper member and the lower member are provided. a push member 1400 that is raised and lowered relative to the body; a main 1210 extending downward from the external air connection part and disposed through the compression space and the exterior; It is coupled to the lower side of the main body and provides a nozzle device including a distal member 1220 for opening and closing the lower end side of the exterior according to the relative movement of the body and the push member.

Description

Nozzle device for container inspection equipment {NOZZLE DEVICE FOR WATER BOTTLE INSPECTION EQUIPMENT}

The present invention relates to container inspection, and more particularly, to a nozzle device that is mounted on an inlet side in a process for determining whether a container containing beverage or bottled water is defective, so that the inspection can be performed.

Nowadays, many containers for beverages are used as synthetic resins, and polyester resin is widely used as a material for containers in consideration of productivity. A container made of polyethylene terephthalate (PET), a so-called PET bottle, is widely used. In addition, it is known that materials such as HDP, PVC, and PP are used for the manufacture of containers. These synthetic resin containers are preferred in various fields because the manufacturing process is simple and the cost is not high, and they have high durability in various use environments and can be recycled.

Since these containers mainly contain liquids such as water or beverages, sealing properties are very important. If leakage occurs due to cracks in the manufacturing process or the process for reuse, the contents unexpectedly flow out during storage, transport, or use, causing problems. .

For this reason, separate inspection equipment is applied in the process of producing bottled water or PET bottles, and inspection equipment suitable for the production line is manufactured and installed in each field and used.

Korean Patent Application Laid-Open No. 10-2017-0061951 discloses a PET bottle leak inspection apparatus in the prior art, and FIG. 1 is a plan view thereof.

The PET bottle leak inspection apparatus 100 may include a PET bottle supply unit 110 , an index unit 120 , a gas injection module 130 , a module lifting unit, a panel rotating unit, an inspection control unit, and a PET bottle discharge unit 160 . . On the upper side of the index part 120 , a plurality of them are arranged in a circle so as to rotate along the same trajectory as the rotational movement trajectory of the PET bottle 1 rotated by the index part 120 , and are installed in the index part 120 . It is a component for injecting gas into the inside of the plastic bottle by combining with the inlet of the rotating plastic bottle (1). That is, in the gas injection module, a plurality of gas injection modules are installed in a circular arrangement spaced apart from the plastic bottle insertion groove of the panel 122 at the same distance, and each gas injection module is combined with one PET bottle and moved while moving. to inject gas into the interior. In this process, if it is determined that the appropriate pressure is reached, it is judged as a good product, otherwise, it is judged as a defective product.

In the inspection field of these containers, sealing performance and sensing accuracy are important factors for accurate delivery of pressure at the temporary inspection position.

However, in the above-mentioned prior art inspection apparatus, only leaks caused by simple cracks can be inspected, but it is impossible to check the occurrence of odors or the inflow of internal foreign substances, and energy consumption and noise are reduced due to the pressure leakage check. Big.

In particular, in the case of bottled water, it is difficult to apply the PET bottle inspection device in the manufacturing process because it is often recycled and an off-flavor (異臭) inspection is required.

The present invention has been devised to solve the above problem, and when using a recycled empty bottle such as a bottle of water, an off-flavor test and a crack test can be performed at the same time, and a nozzle device for a container inspection equipment that is compact and can improve accuracy in use. aim to do

The present invention, a body 1100 having a vacuum connection part to which a vacuum line is connected upwardly, a compression space formed therein, and an external air connection part for selectively introducing external air into the compression space; An upper member 1410, a portion of which is inserted into the inner periphery of the body, a lower member 1430 detachable from the inlet side of the container, and an exterior 1230 disposed through the upper member and the lower member are provided. a push member 1400 that is raised and lowered relative to the body; a main body 1210 extending downward from the vacuum connection part and disposed through the compression space and the exterior; Provided is a nozzle device including a distal member 1220 having a hole communicating with the main body, coupled to the lower side of the main body, and opening and closing the lower end side of the exterior according to the relative movement of the body and the push member.

It may include an elastic member 1300 disposed inside the compression space to provide an elastic restoring force downward when the upper member moves upward with respect to the body.

It is preferable that the upper side is inserted into the lower inner periphery of the upper member and further includes a connecting member 1420 to which the lower member is coupled to the lower side.

In addition, the exterior may include an exterior ring that protrudes from the upper side toward the outer periphery and is fixed between the upper step of the upper member and the upper end of the connecting member.

In addition, it is disposed in the insertion space facing the lower member and the exterior further includes a sealing member 1440 for sealing the entrance to the container.

On the other hand, it may further include an outdoor air valve 1010 for selecting the communication with the outdoor air of the outdoor air connection part.

The outside air valve allows outside air to flow into the compression space and the clearance 1240 between the exterior and the main pipe in a state in which the lower end of the exterior is open, so that the air inside the container can be moved to the main and vacuum lines.

According to the configuration of the present invention described above, there is an effect of improving the efficiency and economic efficiency of the inspection process because the off-flavor inspection and the crack inspection are possible with one operation in one equipment.

In particular, the internal space of the body forms a space in which the elastic member is compressed and performs a mechanical function of guiding the vertical movement of the push member, and at the same time communicates with the outside air by opening the outside air valve to introduce the outside air into the inside of the bottled water container As a result, it performs the function of regulating the pressure so that the air inside the bottled water reaches the odor sensor on the vacuum line smoothly.

In addition, the communication structure between the opening and closing of the main body and the exterior and the compression space can be made naturally at the correct timing in the process of detachment from the bottled water container, so that the reliability and durability of the test can be dramatically improved.

1 is a plan view of a prior art PET bottle leak inspection apparatus.
2 is a block diagram of a nozzle device for container inspection equipment of the present invention.
3 is a front cross-sectional view of a nozzle device for container inspection equipment according to a preferred embodiment of the present invention.
4 is a front sectional view showing a compressed state of the nozzle device for the container inspection equipment of FIG. 3 .
5 is a flowchart showing the operation of the nozzle device for the container inspection equipment of the present invention.

Hereinafter, a nozzle device for container inspection equipment according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following description, when a part is 'connected' to another part, it includes not only a case in which it is directly connected, but also a case in which another element or device is interposed therebetween. In addition, when a part 'includes' a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise stated.

The present invention basically provides a nozzle device disposed at a detachable part from a container of container inspection equipment capable of detecting container leakage, and the nozzle transmits positive or negative pressure to the container to prevent factors such as cracks in the container. It performs a function to detect leakage by

Therefore, the type or shape of the container inspection equipment to which the nozzle device applied to the present invention is applied is not limited. In addition, the storage function for various substances in the gaseous or liquid phase used for purposes other than the bottled water container, as well as the synthetic resin material, is not limited in its materials such as ceramics or glass.

2 is a block diagram of a nozzle device for container inspection equipment of the present invention.

In the nozzle device 1000 of the present invention, the inlet side of the container is disposed in the lower insertion space to provide a predetermined negative or positive pressure. In the present invention, an example of the bottled water container 10 is described, but the type and shape of the container are not limited as described above.

In the embodiment of the present invention, the nozzle device 1000 is coupled to the vacuum unit 2200 to provide negative pressure or vacuum pressure to the bottled water container 10 , but it should be noted that the direction of this pressure is not limited.

The vacuum unit 2200 may be applied to various well-known pressure generating means capable of providing suction pressure, and a detailed description thereof will be omitted.

The nozzle device 1000 is connected to the vacuum unit 2200 through a predetermined vacuum line, and the vacuum unit 2200 has a pressure and time set by a predetermined algorithm by the controller 2300 or a control command input by the operator. can work as

In an embodiment of the present invention, as a whole, the container inspection equipment may inspect the presence or absence of odor in addition to the inspection of cracks, and for this purpose, the sensor device 2100 may be disposed in the vacuum line. The sensor device 2100 may be a pressure sensor and/or an odor sensor.

The off-flavor sensor may be a means for detecting various odors or chemical components capable of detecting an undesirable flavor, and since the container normally accommodates water or beverages that can be consumed by humans, the detection of such off-flavor is It has a significant impact on recycling and merchandising. Note that when the off-flavor sensor is applied in this way, the crack detection and off-flavor detection can be smoothly performed only when the vacuum unit 2200 that generates a negative pressure, not a positive pressure, is applied.

On the other hand, in the nozzle device 1000, a predetermined vacuum connection part is connected to the vacuum line, but the internal space may be temporarily connected to the outside air. To this end, an outdoor air valve 1010 for opening and closing the inner space with the outside may be configured, and a specific embodiment thereof will be described later.

3 is a front cross-sectional view of a nozzle device for container inspection equipment according to a preferred embodiment of the present invention.

The nozzle device 1000 has a cylindrical shape as a whole and is connected to the vacuum unit 2200 through a vacuum line as described above. In general, it would be preferable for the efficiency of inspection to be arranged in a plurality of rows on a predetermined tray or rail on which the water container 10 is disposed, but this arrangement relationship may be flexibly applied depending on the situation.

The nozzle device 1000 has a body 1100 that forms a predetermined working space therein as a whole and is connected to a vacuum line, and a push member 1400 that is in close contact with the bottled water container 10 and moves up and down inside the body. can be divided into

The body 1100 forms a compression space 1101 inside the cylindrical body, and the compression space 1101 is connected to a vacuum connection part 1120 connected to a vacuum line upward. A flange 1130 having a relatively wide diameter may be formed on the upper side of the body in consideration of the convenience of coupling with other structures or devices. The vacuum connection unit 1120 may be configured in the form of a terminal protruding upward from the flange 1130 , but various shapes may be selected.

The compression space 1101 temporarily sucks outside air, forms a vacuum toward the lower push member 1400, and forms an operating space in which the push member 1400 can move upward, and at the same time, an elastic member 1300. It functions as a space where compression is possible, and the detailed operation for this will be described later.

According to the above concept, a part of the body 1100 is formed with an outdoor air connection unit 1110 that can be connected to outside air, and the outside air connection unit 1110 may be connected to a device such as an air pump capable of actively injecting outside air. However, since the vacuum pressure is formed in the vacuum connection unit 1120, it may be formed in a simple open form or in an open form with nozzles or terminals. The outdoor air connection unit 1110 may be opened and closed according to selection, and for this purpose, the above-described outdoor air valve 1010 may be disposed on the outdoor air connection unit 1110 .

The lower side of the body 1100 may function as a predetermined vertical movement guide member, and the push member 1400 moves up and down accordingly. Specifically, the push member 1400 may be composed of an upper member 1410 , a connecting member 1420 , and a lower member 1430 from an upper side in appearance.

A part or all of the upper member 1410 may move up and down along the lower inner periphery of the body 1100 . At least the upper portion of the upper member 1410 has an outer diameter corresponding to the inner periphery of the body 1100 as the insertion portion 1411, and the inner space is hollow so that the lower side of the elastic member 1300 can be inserted and supported. is done

A ring-shaped sealing member (reference number not shown) may be interposed between the outer surface of the insertion part 1411 and the inner surface of the body 1100 to prevent pressure leakage. This sealing member is the nozzle device 1000 . may be disposed in a selective material and shape at the connecting portion between each member, and a known technique may be used for this, and thus a description of a specific embodiment will be omitted.

A main 1210 and an outer 1230 may be disposed through the inner peripheral side of the upper member 1410, and a specific embodiment thereof will be described later.

A lower member 1430 is disposed on the lower end of the push member 1400 , and the lower member 1430 preferably has a cup shape that can wrap the inlet portion of the water container 10 . Accordingly, the lower member 1430 has an insertion space 1431 at the lower portion, and the inner surface of the side wall forming the insertion space is formed in the form of an inclined surface whose diameter decreases toward the upper side in consideration of the flexibility of the positional relationship with the bottled water container 10. It would be desirable

A sealing member 1440 is disposed on the ceiling portion of the lower member 1430 to enhance sealing properties with the bottled water container 10, and the sealing member 1440 is a bottled water container in a state in which the push member 1400 is completely lowered. (10) and keep it in close contact with the entrance. To this end, the sealing member 1440 may be made of a material, such as rubber, that allows deformation to some extent.

A case in which the lower member 1430 and the upper member 1410 are directly connected may be considered. However, it is preferable that the connection member 1420 is interposed between the lower member 1430 and the upper member 1410 as shown in consideration of connection with the inner member, maintenance, and sealing properties.

As a preferred embodiment of the connecting member 1420 , it may be formed in a disk shape and is coupled in such a way that a portion of the upper side is inserted into the lower inner periphery of the upper member 1410 . The connection member 1420 mainly performs a function of fixing the exterior 1230 , and the exterior 1230 functions to communicate the inside of the inlet of the water container 10 and the compression space 1101 .

The exterior 1230 has a hollow pillar shape and is disposed through the lower side of the upper member 1410 , the connecting member 1420 , and the lower member 1430 . The exterior 1230 is formed in a form in which the upper and lower sides are opened and connected, and the lower portion is selectively opened and closed according to the movement of the entire push member 1400 . This operating relationship will be described later in relation to the function of the main body 1210 .

A ring-shaped outer ring 1231 protruding in the outer circumferential direction is formed on the upper side of the outer surface 1230 , and the outer ring 1231 is an inner periphery lower side of the upper member 1410 and an upper end of the connecting member 1420 . It is fixed in the space between the sides. To this end, an upper stepped 1412 corresponding to the shape of the outer ring 1231 is formed on the inner periphery of the upper member 1410, and a connecting member 1420 is inserted to face the upper stepped 1412, and the upper stepped 1412 and The upper end of the exterior 1230 is fixed to the space formed between the upper surfaces of the connecting member 1420 . According to this concept, the upper member 1410 , the connecting member 1420 , the lower member 1430 , and the exterior 1230 move up and down together. This relationship constitutes the push member 1400, and their fastening may be applied to known mechanical coupling elements such as press-fitting, bolting, and bonding.

On the other hand, the main body 1210 is formed in a form extending downwardly to the vacuum connection part 1120 formed on the upper side of the body 1100, and this main body 1210 is in the form of a cylinder with a relatively narrow diameter as shown in the figure. It extends to the lower end of the insertion space 1431 of the member 1430 . Accordingly, the main 1210 is disposed through the elastic member 1300 and the exterior 1230 of the compression space 1101, and the end member 1220 is disposed at the lower end.

The end member 1220 has a predetermined hole (not shown) communicating with the main body 1210, and as a main function, the vacuum pressure of the vacuum unit 2200 is transferred into the bottled water container 10 and sucked. carry out

In addition, it is preferable that the end member 1220 has a diameter wider than that of the main body 1210 , and a portion of the outer portion is formed in a form that can be in close contact with the lower end of the exterior 1230 . The end member 1220 performs a function of opening and closing the main body 1210 according to the relative movement of the body 1100 and the push member 1400 .

According to the above structure, in a state in which the push member 1400 moves upward and the end member 1220 opens the exterior 1230, the interior of the compression space 1101, the inner circumferential space of the exterior 1230, and bottled water It should be noted that the inside of the container 10 and the inner circumferential space of the main pipe 1210 are in communication. In this case, if the outdoor air valve 1010 is open, the spaces are connected to the outside.

4 is a front cross-sectional view showing a compressed state of the nozzle device for the container inspection equipment of FIG. An operation of the nozzle device 1000 will be described based on the structure described in the embodiment of FIG. 3 .

In a state in which the bottled water container 10 is temporarily disposed at a predetermined fixed position, the nozzle device 1000 is moved downward by a predetermined vertical movement mechanism to get closer to the entrance of the bottled water container 10, and the test is started. Assume the situation.

When the entrance of the bottled water container 10 is brought into contact on the inner circumferential slope of the lower member 1430 and the insertion is guided, the entrance of the bottled water container 10 is completely in close contact with and inserted into the sealing member 1440, the bottled water container (10) Its interior is in a state that can be cut off from the outside.

In this state, when the nozzle device 1000 is further lowered as a whole, the push member 1400 is fixed to the inlet of the bottled water container 10 as a whole, so that the vertical position is not changed, and only the body 1100 can be moved further downward. At this time, the downward movement is made by resisting the elastic restoring force of the elastic member 1300 . In the description of the present invention, the downward movement of the body 1100 and the upward movement of the push member 1400 are relative to each other, and consequently have the same meaning.

In this way, in a state in which the push member 1400 is moved upward with respect to the body 1100, the main body 1210 fixed to the body 1100 is also moved downward, and the end member 1220 at the lower end of the main body 1210. opens the lower side of the exterior 1230 .

A space between the inner periphery of the exterior 1230 and the outer periphery of the main 1210 is defined as a clearance 1240 .

Accordingly, it can be seen from the drawings that the inner space of the bottled water container 10, the gap portion 1240, and the compression space 1101 are in communication with each other.

When the predetermined inspection is completed, the entire nozzle apparatus 1000 may be moved upward. In this case, the body 1100 will first start to move upward by the restoring force of the elastic member 1300 . Accordingly, the end member 1220 closes the lower end of the exterior 1230 again, and the internal communication state between the compression space 1101 and the water container 10 is released. Although the vacuum is broken in the process of disconnecting the nozzle device 1000 and the container, it is preferable to allow the natural inflow of outside air rather than the injection of compressed air to minimize the possibility of contamination of the container. Temporarily opening the outdoor air valve in this process may be considered.

Based on the configuration of the nozzle device 1000 of the present invention described above, a process of inspecting the mineral water container 10 of the preferred embodiment will be described.

5 is a flowchart showing the operation of the nozzle device for the container inspection equipment of the present invention.

As described above, the nozzle apparatus 1000 may be arranged in a plurality by forming a predetermined row in the inspection equipment.

When the empty bottle is placed at the disposed position of the nozzle device 1000 ( S110 ), the nozzle device 1000 descends ( S111 ) and is coupled to the bottled water container 10 . More precisely, close contact and sealing between the lower member 1430 and the inlet side of the water container 10 is made. This descent (S111) causes the relative movement of the body 1100 and the push member 1400, and the end member 1220 is spaced apart from the lower side of the exterior 1230 to open the clearance portion 1240 as described above.

Accordingly, the opening (S210) of the outdoor air valve 1010 is made first, which is to improve the efficiency of the odor inspection. When the outdoor air valve 1010 is opened in this way, the outdoor air can be moved into the compressed space 1101 , the gap 1240 , and the bottled water container 10 , and the air inside the bottled water container 10 naturally leads without pressure resistance. 1210 is moved to the vacuum connection unit 1120 and the vacuum line to reach the off-flavor sensor 2100 . Here, the preliminary detection of the off-flavor sensor can be made.

The outdoor air valve is opened (S210) for a set time (T1), and when it is determined (S211) that the opening time (T open) is reached beyond that, the outdoor air valve 1010 is closed and the inflow of outdoor air is blocked ( S310).

Then, a vacuum is generated in the vacuum unit 2200 to apply a vacuum to the inside of the bottled water container 10 ( S311 ), and the air inside the bottled water container 10 is sucked into the vacuum line.

An off-flavor sensor 2100 and a pressure sensor (not shown) are applied to the vacuum line, and determination of whether the off-flavor is normal (S400) and whether the pressure is normal (S500) are performed.

In determining whether the off-flavor is normal (S400), it may be possible to determine whether there is an abnormality only by first detecting the concentration of the off-flavor in the air inside the bottled water container 10 sucked when the vacuum is applied, but the preliminary off-flavor sensor concentration when the outside air is introduced In order to improve accuracy, it would be desirable to determine an abnormality when the difference between the concentration at the time of detection and the concentration at the time of vacuum application exceeds a set value. That is, the difference value between the preliminary inspection using external air and the inspection using vacuum pressure is used. In this way, when it is determined that the odor is abnormal in the normal determination (S400), it is determined as defective (S620), and a warning to the user and/or removal can be performed on the line of the bottled water container (10). Such determination and selection operations may be variously performed according to the logic of the control unit 2300 .

In addition, the pressure sensor functions in determining whether the pressure is normal ( S500 ), and it may be desirable for the pressure sensor to be integrally formed with the vacuum unit 2200 for structural simplicity as described above. If the pressure (measured P) is less than the set pressure (P2) by applying a vacuum for a predetermined time, it is determined as normal (S610), and if it is more than that, a crack occurs in the water container 10 It is determined that there is, and a defective determination (S620) can be made.

When the process is completed, the nozzle device 1000 is raised (not shown), the coupling with the water container 10 is released, and the next empty bottle is placed, and the process can be repeated.

In the nozzle device of the present invention described above, the internal space of the body 1100 forms a space in which the elastic member 1300 is compressed and performs a mechanical function of guiding the vertical movement of the push member 1400, and at the same time, the outside air By opening the valve 1010, it communicates with the outside air to introduce the outside air into the water container 10, and as a result, the air inside the water container 10 smoothly reaches the odor sensor on the vacuum line. It provides the advantage that various functions for inspection of containers can be performed together with a simple structure.

In addition, the communication structure between the opening and closing of the main body and the exterior and the compression space can be made naturally at the correct timing in the process of detachment from the bottled water container 10, so that the reliability and durability of the test can be dramatically improved.

In addition, there is an effect of improving the efficiency and economic feasibility of the inspection process because odor inspection and crack inspection are possible with one operation in one equipment.

In the above, the present invention has been described in detail based on the embodiments and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the contents described in the following claims.

10...water container 1000...nozzle device
1010...Outside air valve 1100...Body
1101...Compressed space 1110...Outside air connection part
1120...Vacuum connection 1130...Flange
1210...subject 1220...end member
1230...Appearance 1240...Gathering Division
1231...External ring 1300...Elastic member
1400...Push member 1410...Upper member
1411...Insert part 1412...Upper step
1420...Connecting member 1430...Lower member
1431...Insert space 1440...Sealing member
2100...Odor sensor 2200...Vacuum nit
2300...control unit

Claims (6)

a body 1100 having a vacuum connection part to which a vacuum line is connected upwardly, a compression space formed therein, and an external air connection part for selectively introducing outside air into the compression space;
An upper member 1410 partially inserted into the inner periphery of the body, a lower member 1430 detachable from the inlet side of the container, and an exterior 1230 disposed through the upper member and the lower member are provided. a push member 1400 that is raised and lowered relative to the body;
a main 1210 extending downward from the vacuum connection part and disposed through the compression space and the exterior;
A nozzle device comprising a; end member 1220 having a hole communicating with the main body, coupled to the lower side of the main body, and opening and closing the lower end side of the exterior according to the relative movement of the body and the push member.
According to claim 1,
The nozzle device further comprising a; an elastic member disposed inside the compression space to provide an elastic restoring force downward when the upper member moves upward with respect to the body.
According to claim 1,
The nozzle device further comprising a; the upper side is inserted into the inner periphery of the lower side of the upper member, the connecting member 1420 is coupled to the lower side to the lower side.
4. The method of claim 3,
The appearance is
A nozzle device having an outer ring that protrudes from the upper side toward the outer periphery and is fixed between the upper step of the upper member and the upper end of the connecting member.
According to claim 1,
The nozzle device further comprising; a sealing member (1440) disposed in the insertion space facing the lower member and the exterior and sealing the entrance to the container.
According to claim 1,
The outdoor air valve 1010 for selecting communication with the outdoor air of the outdoor air connection part; further comprising,
The outdoor valve is
A nozzle device for allowing the air inside the container to move to the main and vacuum lines by allowing outside air to flow into the compression space and the clearance 1240 between the outer and main in a state in which the lower end of the exterior is open.

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