JP4850018B2 - Filling equipment - Google Patents

Description

  The present invention relates to a filling device used when a liquid filling material is filled into a container in a fixed amount, and particularly to a filling device capable of preventing air bubbles from being mixed into a highly viscous liquid filling material. is there.

For example, there are some synthetic resins which are in a highly viscous liquid form and, when exposed to air, may be oxidized or solidified to be altered. Therefore, when filling this kind of synthetic resin into a container, it is necessary to fill the container so as not to contain bubbles. However, in the conventional filling apparatus, the synthetic resin filled in the container entrains the air present in the container, and bubbles are inevitably mixed into the synthetic resin. When the viscosity of the synthetic resin is quite high, it is impossible to remove only the mixed bubbles, so that the bubbles are removed by discharging a part of the synthetic resin together with the bubbles.
In particular, it is said that it is almost impossible to prevent bubbles from being mixed into the synthetic resin filled in the small diameter portion in a container having a different diameter cylindrical shape in which the small diameter portion is connected to the tip of the large diameter portion.

However, once a part of the filled synthetic resin is discharged, not only the amount of the discharged synthetic resin is wasted, but also a process for removing a part of the synthetic resin together with bubbles is required, resulting in poor production efficiency. There is a problem of end.
The present invention was made in light of the existence of the problems of the background art described above, and a highly viscous filling material is, for example, a container with a different diameter cylindrical shape in which a small diameter portion is connected to a tip of a large diameter portion. An object of the present invention is to provide a filling apparatus and a filling method that can be filled without introducing bubbles.

In order to solve the above-mentioned problems, the invention described in claim 1 is a filling device used when filling a liquid container into a hard container. A filling means for supplying an object to be filled to the filling path, a nozzle having a base end connected to the filling path, and a tip part entering into the container, and a closing member closely contacting so as to close the opening of the container; An air suction means for sucking air in the container ; and a nozzle holder for holding a nozzle; a gap formed in the nozzle holder between an outer peripheral surface of the nozzle and the nozzle holder; and the gap The filling device is characterized in that an air suction path including a connection port communicating with the outside of the nozzle holder is formed .

  The invention described in claim 2 is the filling apparatus according to claim 1, wherein the nozzle has a working length reaching the vicinity of the tip of the container.

According to a third aspect of the present invention, in the filling method using the filling device according to the first or second aspect , the closing step of closing the opening of the container by bringing the closing member into close contact with the opening of the container. Then, after the closing step, the air in the container is sucked by the air suction means, and the container is almost evacuated. After the suction step, the filling material is supplied to the filling path by the filling means, and the nozzle And a filling step of supplying an object to be filled into the container.

  According to the present invention, an object to be filled with high viscosity can be filled, for example, into a container having a different diameter cylindrical shape in which a small diameter portion is connected to a tip of a large diameter portion without mixing bubbles. Therefore, a step of discharging a part of the filling material together with the bubbles is unnecessary, and the filling material is not wasted and the production efficiency can be improved.

Hereinafter, the embodiment shown in the drawings will be specifically described as the best mode for carrying out the filling apparatus of the present invention.
In the present embodiment, the filling material is a viscous fluid, and is an adhesive W made of a liquid synthetic resin having a high viscosity. The adhesive W has a viscosity of about 100,000 CPS.
Further, as the container 3, a hard container having a different diameter cylindrical shape in which the small diameter portion 7 is connected to the distal end portion of the large diameter portion 5 was applied. The reason why the hard container 3 is used is that, as will be described later, since the internal space 4 is almost in a vacuum, it is necessary to withstand this so that the container 3 does not deform.
As shown in FIG. 5, a step-like internal space 4 serving as a filling space for the adhesive W is formed at the center of the container 3, and a stopper lid that closes the opening on the large-diameter portion 5 side of the internal space 4. 6 and a cap 8 for closing the opening on the small diameter portion 7 side of the internal space 4 are attached.

  The filling device 1 of the present invention includes a nozzle 9 having a working length L that can reach the vicinity of the distal end portion of the container 3, a base end portion 11 of the nozzle 9, a filling path 13 for the adhesive W inside, and air And a holder portion 17 in which a suction path 15 is formed. Further, the filling device 1 includes a check valve 19 provided in the middle of the filling path 13, a filling material pressure feeding device (not shown) as a filling means connected to the filling path 13 and supplying the adhesive W into the filling path 13. And an air suction device (not shown) as air suction means connected to the air suction path 15.

  The nozzle 9 is a small-diameter long pipe-shaped member having a diameter of 3.5 mm and a working length L protruding from the holder portion 17 of about 60 mm. A nozzle hole 21 having a diameter of about 1 mm is formed on the tip surface of the nozzle 9, and the adhesive W supplied into the nozzle 9 flows out of the nozzle hole 21 through the internal space 23 formed in the nozzle 9. The container 3 is filled.

The holder portion 17 includes a holder base 27 fixed to the support member 25, a nozzle holder 29 provided around the base end portion 11 of the nozzle 9, and a valve case 31 that connects the holder base 27 and the nozzle holder 29. It is comprised by providing.
The holder base 27 is a substantially disk-shaped member, and an engagement groove 33 for receiving the support member 25 is formed on the side peripheral surface. A mounting hole 37 in which a taper screw is cut is engraved on a side end surface obtained by vertically cutting a part of the side peripheral surface of the holder base 27. A hose joint 35 extending from a filling material pressure feeding device (not shown) is attached to the attachment hole 37. The holder base 27 is fixed to the support member 25 using two fixing knobs 26 shown in FIGS.

  Inside the holder base 27, an internal space 39 is formed perpendicularly to the flange portion 38, and this internal space 39 communicates with the mounting hole 37. The internal space 39 includes a compression coil spring 43 for constantly energizing a valve body 41 of a check valve 19 described later in the valve closing direction C, a valve seat 45 that also serves as a spring seat for the compression coil spring 43, and a valve case. 31 large-diameter cylindrical portions 47 are accommodated.

The valve case 31 is a joint member that integrally includes a large-diameter cylindrical portion 47, a flange portion 49, and a small-diameter cylindrical portion 51. A ring-shaped circumferential groove 53 is formed around the large-diameter cylindrical portion 47, and an O-ring 55 is externally fitted to the circumferential groove 53 for ensuring the sealing between the holder base 27 and the valve case 31. ing.
The flange portion 49 is a portion that is attached in close contact with the flange portion 38 of the holder base 27 and is fixed using a fixing bolt or the like (not shown).

A nozzle holder 29 is attached to the outside of the small diameter cylindrical portion 51, and the base end portion 11 of the nozzle 9 is attached to the inside.
An inner space 57 penetrating vertically is formed at the center of the valve case 31, and the inner space 57 is narrowed at the tip side. A valve body 41 of the check valve 19 is accommodated in the internal space 57.
The valve body 41 has a spherical shape, and a locking bolt 59 protruding upward is attached to the valve body 41. Further, two nuts 61 are attached to the locking bolt 59, and one end of the compression coil spring 43 is locked using these two nuts 61.

In the center of the nozzle holder 29, a step-shaped receiving hole 63 that receives the small diameter cylindrical portion 51 of the valve case 31 and the base end portion 11 of the nozzle 9 is formed. A connection port 65 is provided in the middle of the receiving hole 63, and the connection port 65 communicates with the outside of the nozzle holder 29. A female screw extending toward the side of the holder portion 17 is cut in the connection port 65, and one end of an air hose (not shown) is connected to the connection tool 66 screwed into the female screw. Further, an air suction device as an air suction means (not shown) is connected to the other end of the air hose.
A gap 67 is formed between the outer peripheral surface of the nozzle 9 on the base end 11 side and the nozzle holder 29, and this gap 67 communicates with the connection port 65. The air suction path 15 is constituted by the gap portion 67 and the connection port 65.
Thus, since the air suction path 15 is provided in the nozzle holder 29 that holds the nozzle 9, the number of parts does not increase, and the cost can be minimized.

The filling path 13 includes an attachment hole 37, an internal space 39 of the holder base 27, an internal space 57 of the valve case 31, and an internal space 23 of the nozzle 9.
The lower surface of the nozzle holder 29 is provided with a suction pad 69 as a closing member that is in close contact with the upper end of the container 3 and closes the upper opening 3a.

Next, the operation of the filling apparatus 1 of the present invention configured as described above will be described by dividing it into (1) a closing step, (2) a suction step, and (3) a filling step.
(1) Closing process (see Fig. 3)
When the filling of the adhesive W is started using the filling device 1 of the present invention, the cap 8 is fitted to the small diameter portion 7 of the container 3 and the opening on the small diameter portion 7 side of the internal space 4 is closed. Then, the suction pad 69 is brought into close contact with the upper portion of the large diameter portion 5 of the container 3, and the upper opening 3 a of the container 3 is closed.

(2) Suction process (see Fig. 3)
After the closing process, an air suction device (not shown) is operated. As a result, the air in the internal space 4 of the container 3 is sucked and discharged through the air suction path 15, further through the connection tool 66 and the air hose, and the inside of the container 3 is almost in a vacuum state.
Since the filling device 1 uses the gap 67 between the nozzle 9 and the nozzle holder 29 as the gap portion 67, the air suction path 15 can be secured with a simple structure. That is, since it is not necessary to apply special processing to the suction pad 69 such as making a hole in the suction pad 69 and connecting a hose, the air suction path 15 can be secured with a simple structure. Since the processing is not performed, the suction pad 69 is not likely to be deformed, and the suction pad 69 is firmly attached to the upper portion of the large-diameter portion 5 of the container 3 so that the opening 3a on the upper side of the container 3 has no gap. Can be closed.

(3) Filling Step After the suction step, an unillustrated filling material pressure feeding device is operated to send the adhesive W into the filling path 13 via the hose joint 35. The filling path 13 and the nozzle 9 are filled with the adhesive W in advance, and air is not mixed therein. The adhesive W that has flowed into the filling path 13 pushes down the valve body 41 of the check valve 19 against the urging force of the compression coil spring 43, thereby forming a gap 71 between the valve body 41 and the valve seat 45.
Then, the adhesive W passes through the gap 71 through the internal space 57 of the valve case 31, passes through the internal space 23 of the nozzle 9, and is filled from the nozzle hole 21 into the internal space 4 of the container 3 from the small diameter portion 7 side. go.
Since the inside of the container 3 is almost vacuum as described above, the adhesive seat W is filled in the internal space 4 including the small diameter portion 7 without involving air. Accordingly, the container 3 is filled with the adhesive W so that no bubbles are mixed therein.

  Then, when a predetermined amount of the adhesive W is filled, the operation of the filling material pumping device and the air suction device (not shown) is stopped, the container 3 is removed from the suction pad 69, and the opening of the internal space 4 on the large diameter portion 5 side is opened. It is closed by the stopper lid 6.

(4) When operation is stopped (see Fig. 3)
When the operations of the filling material pressure feeding device and the air suction device (not shown) are stopped, the valve body 41 of the check valve 19 is moved in the valve closing direction C as shown by the urging force of the compression coil spring 43. And the valve body 41 will be in the state contact | abutted to the valve seat 45, and the non-return valve 19 will be in a valve closing state.

As described above, the illustrated embodiment has been described in detail as the best mode for carrying out the present invention, but the specific configuration of the present invention is not limited to the illustrated embodiment. Design changes and the like within a range not departing from the gist of the invention are also included in the present invention.
For example, the filling device 1 of the present invention can be configured such that the holder unit 17 and the nozzle 9 are arranged one by one, and a plurality of sets of the holder unit 17 and the nozzle 9 are arranged in parallel. . The shape and size of the suction pad 69 and the diameter and working length L of the nozzle 9 can be appropriately changed according to the shape and size of the container 3.
In the above embodiment, a liquid adhesive having a viscosity of about 100,000 CPS is shown as the filling material. However, the present invention is not limited to this, and the liquid adhesive having a viscosity in the range of 100,000 CPS to 120,000 CPS is used. It is possible to fill the filling material without bubbles. Furthermore, not only adhesives but also any liquid filling material having the above-mentioned viscosity, such as cosmetics, foods, medicines, and these materials, can be applied.

  INDUSTRIAL APPLICABILITY The present invention can be used in the manufacture and field of use of a filling device used when filling an object to be filled in a fixed amount.

It is a perspective view which shows the filling apparatus which concerns on embodiment of this invention. It is a top view which shows the filling apparatus which concerns on embodiment of this invention. It is a sectional side view for demonstrating operation | movement of the filling apparatus which concerns on embodiment of this invention. It is a sectional side view for demonstrating operation | movement of the filling apparatus which concerns on embodiment of this invention. It is a perspective view which decomposes | disassembles and shows the container which is the filling object of the filling apparatus which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Filling device 3 Container 4 Internal space 5 Large diameter part 6 Stopper lid 7 Small diameter part 8 Cap 9 Nozzle 11 Base end part 13 Filling path 15 Air suction path 17 Holder part 19 Check valve 21 Nozzle hole 23 Internal space 25 Support member 26 Fixing knob 27 Holder base 29 Nozzle holder 31 Valve case 33 Engaging groove 35 Hose joint 37 Mounting hole 38 Flange part 39 Internal space 41 Valve body 43 Compression coil spring 45 Valve seat 47 Large diameter cylindrical part 49 Flange part 51 Small diameter cylindrical part 53 Circumferential groove 55 O-ring 57 Internal space 59 Locking bolt 61 Nut 63 Receiving hole 65 Connection port 66 Connection tool 67 Cavity 69 Adsorption pad 71 Gap W Adhesive A Air C Valve closing direction L Working length 3a Opening

Claims (3)

In a filling apparatus used when filling a liquid filling material into a hard container, a filling path serving as a filling material path, a filling means for supplying the filling material to the filling path, and a filling path A nozzle to which the base end is connected and the tip enters into the container, a closing member that is in close contact so as to close the opening of the container, an air suction unit that sucks air in the container, and a nozzle that holds the nozzle and a holder, and a gap portion formed between the outer peripheral surface and the nozzle holder of the nozzle to the nozzle holder, air and a connection port and communicating with the outside of the nozzle holder and the gap portion A filling device in which a suction path is formed .   2. The filling apparatus according to claim 1, wherein the nozzle has a working length that reaches the vicinity of the tip of the container. 3. A filling method using the filling device according to claim 1 or 2, wherein a closing member closes the opening of the container by closing the closing member so as to close the opening of the container, and an air suction is performed after the closing process. A suction process in which air in the container is sucked by means to make the inside of the container almost vacuum, and after the suction process, the filling material is supplied to the filling path by the filling means, and further, the filling material is supplied from the nozzle into the container. And a filling process.

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