JPH0243502Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an opening applicator for uniformly applying an adhesive for adhering a sealing material such as aluminum foil to the open end surface of a glass container.

(Prior Art) For example, a sealing member made of aluminum foil or the like is adhered to the open end surface of a glass container that accommodates a powdered material such as instant coffee or powdered milk. Normally, when performing this type of sealing, a water-soluble liquid adhesive is applied to the entire surface of the opening end of the container using a rubber roll, and then the sealing member is pressed. Alternatively, there is a method in which the sealing material is applied after application using a grooved rubber roll and rotated relative to each other to spread the application.

(Problem to be solved by the invention) In the conventional method, since a rubber roll is used, when the rubber roll separates from the open end surface during the adhesive application process, an adhesive film is formed, and then the film bursts. There is a risk that adhesive may get into the glass container, which is unfavorable from a health and safety standpoint.

In addition, rubber rolls do not fit well with the opening end surface of a glass container, so the opening end surface only needs to be flat. The problem was that it was not possible to coat even the parts.

Furthermore, when applying a thin layer of adhesive, use a gravure roll with many shallow dents on the surface.
The adhesive is transferred to the rubber roll, but the recesses tend to become clogged, and the adhesive cannot be transferred reliably and uniformly to the rubber roll, and its thickness cannot be controlled.

The present invention was developed with the above-mentioned considerations in mind, and its purpose is to uniformly apply a predetermined amount of adhesive over the entire circumference of the open end surface of a glass container without forming an adhesive film. It is an object of the present invention to provide a useful glass container mouth coating device that can coat the glass container and also control the coating thickness as desired.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the glass container opening applicator according to the present invention has a single unit that applies an adhesive to the open end surface of the glass container conveyed by the conveyance device. The present invention is characterized in that it includes one sponge roll, an adhesive supply means for supplying adhesive to the sponge roll, and an adhesive application amount control means for controlling the amount of adhesive applied by the sponge roll.

(Function) Liquid adhesive is supplied to the sponge roll by the adhesive supply means. On the other hand, a conveying device such as a belt conveyor is provided below the sponge roll, and the glass container is conveyed by this conveying device at a predetermined conveying speed with its open end facing upward. Then, by rotating the sponge roll at approximately the same circumferential speed as the conveying device, the adhesive is uniformly applied to the open end surface of the glass container.

In addition, in order to control the amount of adhesive applied to the opening end surface by the sponge roll to a predetermined amount, an adhesive application amount control means such as a squeegee roller is brought into pressure contact with the sponge roll. The adhesive is squeezed out as appropriate, and a predetermined amount of adhesive is retained on the sponge roll.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal sectional view showing a glass container mouth coating device (hereinafter referred to as coating device) 1 according to the present invention, and in the figure, 2 is a main frame framed in a rectangular shape. Reference numeral 3 denotes a sponge roll as an adhesive application means, which is composed of a core roll 4 made of metal, for example, and a sponge 5 detachably attached to the outer periphery of the core roll 4. The shaft 6 of the core roll 4 is attached to the main frame 2. It is held by a bearing part 7 fixed to. Therefore, this sponge roll 3 has a highly elastic outer periphery and is covered with a sponge 5 that absorbs liquid and releases the absorbed liquid by applying appropriate pressure. It is suitable as a coating means for No. 21.

Reference numeral 8 denotes a liquid supply head as an adhesive supply means for supplying adhesive to the sponge roll 3, and is a hook-shaped liquid supply head held on one side of the main frame 2 so as to be vertically movable.
An inverted L-shaped adhesive receiving part 11 is attached below the horizontal part 10 of the bracket 9 (shaped), and a porous pad 12 is placed horizontally so as to dam the open front surface of this receiving part 11. It mainly consists of an inclined surface 13 formed at the upper part of the front surface of the pad 12 and a rotating body 14 placed horizontally so as to be in contact with the sponge 5 of the sponge roll 3, respectively.

The lower part of the vertical portion 15 of the bracket 9 is held by a bracket support bolt 16 and also by a bracket mounting bolt 17. Although not shown in detail in FIG. 1, an elongated hole in the vertical direction is formed near the lower end of the vertical portion 15, and a mounting bolt 17 is inserted into this elongated hole. Further, the support bolt 16 is configured to rotate in a fixed position in a screw hole (not shown) of a mounting plate 18 fixed to the main frame 2. Therefore, by adjusting the pair of left and right support bolts 16, the horizontal level of the liquid supply head 8 can be adjusted, and thereby the adhesive can be uniformly supplied to the sponge 5.

The horizontal portion 10 has a hinge 19 at its base and tip.
The liquid supply head 8 is connected in such a manner that the entire liquid supply head 8 can be rotated upward (see the imaginary line in FIG. 1). Further, a liquid supply pipe 20 is provided on the upper surface of the horizontal portion 10 to which an adhesive 21 is quantitatively supplied from an adhesive tank (not shown).

The adhesive receiving portion 11 has approximately the same length in the axial direction as the sponge roll 3, and both ends thereof are closed. Therefore, the liquid adhesive from the liquid supply pipe 20 is stored in the adhesive receiving portion 11.

The pad 12 is made of, for example, urethane sponge. Further, the rotating body 14 is a cylinder or a cylindrical body made of synthetic resin or metal, and the sponge roll 3
It undergoes so-called frictional rotation as a result of the rotation. Therefore, the adhesive 21 stored in the adhesive receiving portion 11 is transferred to the pad 1.
2 and the rotating body 14, the sponge 5 of the sponge roll 3 is uniformly supplied over the entire surface.

22 is a glass container 23 made of sponge roll 3
A squeegee roller is used as a means for controlling the amount of adhesive 21 applied to the opening end surface 24 of the squeezing roller, and a bearing portion 26 that pivotally supports the shaft 25 is parallel to the arrow X-Y direction, as shown in FIG. Configured to move. That is, the pedestal 27 of the bearing part 26 has an X-Y
A long hole (not shown) is formed in the direction, and by loosening the fixing bolt 28, the center distance adjusting bolt 2
9 is configured to adjust the distance between the centers of the shaft 6 of the sponge roll 3 and the shaft 25 of the squeezing roller 22.

Therefore, when the squeezing roller 22 is moved in the X direction and brought closer to the sponge roll 3, the pressure on the sponge 5 increases, and the amount of adhesive 21 contained in the sponge 5 decreases. , when the squeezing roller 22 is moved in the Y direction, the pressure becomes smaller and the adhesive 2 contained in the sponge 5
The amount of 1 increases. This makes it possible to freely adjust the amount of adhesive 21 applied to the open end surface 24 of the glass container 23.

30 is a motor whose rotational speed is appropriately reduced and transmitted to the sponge roll 3 and the squeezing roller 22. That is, as shown in FIG.
The gear 31 on the 0 side is the gear 32 on the sponge roll 3 side.
On the other hand, the gear 3 on the squeeze roller 22 side
It is engaged with the idler 34 which is engaged with 3.
In other words, the squeezing roller 22 is
In order to move in the -Y direction, the rotation of the motor 30 is transmitted via the idler 34. Note that 35 is a holding member that holds the idler 34 in a vertically movable manner. In FIG. 6, the glass container 23 is moved to Y by a conveyor CV such as a belt conveyor.
When the glass container 23 is being transported from the direction (right) to the X direction (left), when the motor 30 is rotated counterclockwise, the sponge roll 3 is rotated clockwise, and the open end surface of the glass container 23 being transported is rotated clockwise. A predetermined amount of adhesive 21 is uniformly applied to 24. in this case,
It is desirable that the rotational circumferential speed of the sponge roll 3 is approximately equal to the conveyance speed by the conveyance device CV.

As mentioned above, the main frame 2 on which the sponge roll 3, liquid supply head 8, squeeze roller 22, motor 30, etc. are mounted and held is held so as to be able to move up and down as described below. i.e. 36, 37, 38
is a holder fixed to the side of main frame 2,
Gearboxes 39 and 40 are located below holders 36 and 37 provided on one side of the main frame 2, respectively.
is provided. This gearbox 39,40
is fixed to a vertical portion 43 of a bracket 42 erected on a base 41. And each gear box 3
Racks 44, 45 are provided to pass through the racks 9, 40 in the vertical direction, and the upper portions of the racks 44, 45 are fixed to holders 36, 37. 46 is a shaft having pinions 47, 48 fixed to both ends thereof, which mesh with racks 44, 45, respectively. 49
is a worm gear and meshes with one pinion 47. 50 is a hexagonal head formed in the axial direction to rotate the worm gear 49.

A shaft 51 is fixed to a holder 38 provided on the other side of the main frame 2, and this shaft 51 is attached to a bracket 5 erected on the base 41.
Hole of clamp 53 fixed to 2 (not shown)
It is configured to be inserted through the 54,55,5
Reference numeral 6 designates fixing stoppers that are screwed into racks 44, 45 and shaft 51, respectively.

Thus, when the hexagonal head 50 is rotated clockwise or counterclockwise, the pinion 47 is rotated through the worm gear 49, and the other pinion 48 is also rotated in the same direction as the pinion 47 through the shaft 46. As a result, the racks 44 and 45 are raised or lowered together, thereby causing the main frame 2 to be raised or lowered.

If the main frame 2 is configured to be able to move up and down in this way, the lowest part of the sponge roll 3 and the conveying device
The distance between the CV and the conveying surface can be freely set, and glass containers 23 of different heights can be accommodated.

Adjustment bolts 58 paired with bolts 57 are screwed into the four corners of the base 41.
is held by the underbase 59. There are four legs 60 on the underside of the underbase 59.
is installed vertically. An adjusting screw 61 and a nut 62 are provided below each leg 60, so that the length of the leg 60 can be adjusted as appropriate.

Therefore, in order to adjust the level of the base 41,
After loosening the nut 62, a suitable rod is inserted into the through hole 63 of the adjusting screw 61, the screw 61 is rotated to perform rough adjustment, and the nut 62 is tightened to complete the rough adjustment of the level. Next, loosen the bolt 57 and rotate the adjustment bolt 58,
Repeat this until the level is reached. After checking with a level meter, tighten the bolt 57.

In FIG. 5, 64 is a scraper made of rubber, for example, provided on both end surfaces of the sponge roll 3.
65 is a scraper holder. Extra adhesive 21 contained within the sponge 5 of the sponge roll 3
is squeezed out of the sponge 5 by pressure applied by the squeezing roller 22, and adheres and stays on both sides of the sponge roll 3. The scraper 64 is used to scrape off this accumulated adhesive 21, and the scraped adhesive is discharged through a gutter 66 (see FIG. 6).

Although not shown, a control box for controlling the coating device 1 according to the present invention is provided, and controls the rotation of the motor 30 (direction, speed) and the conveyance device.
It is configured to organically control CV control (direction, speed).

Thus, while the motor 30 and the conveying device CV are operating at a predetermined speed, the liquid supply pipe 20
When the adhesive 21 is allowed to flow down (or drip) from the liquid supply head 8, the adhesive 21 is stored in the adhesive receiving portion 11 of the liquid supply head 8. Then, this adhesive 21 is applied to the pad 12.
It descends diagonally downward through the pores. At this time, the adhesive 21 is uniformly dispersed in the width direction of the pad 12 (in the axial direction of the sponge roll 3).

The rotation of the motor 30 causes the sponge roll 3 to rotate in a predetermined direction, and the rotating body 14 in contact with the sponge roll 3 is rotated, whereby the adhesive 21 at the tip of the pad 12 is transferred to the rotating body 1.
4 to the surface of the applicator roll 3, that is, the sponge 5
Adheres evenly across the entire width.

The rotation of the motor 30 rotates the squeezing roller 22, which is in contact with the sponge roll 3 with an appropriate contact pressure, so that the excess adhesive 21 in the sponge 5 is squeezed out and the scraper 6
Scraped by 4.

The glass container 23 transported by the transport device CV has its open end surface 24 facing upward (towards the sponge roll 3), so when it passes below the sponge roll 3, as shown in FIG. , the open end surface 24 comes into pressure contact with the sponge 5, the sponge 5 is recessed, and at this time, the adhesive 21 contained in the sponge 5 adheres to the open end surface 24. in this case,
A predetermined amount of adhesive 21 is uniformly applied to the entire surface of the opening end surface 24.

According to the device of the present invention, adhesive can be applied to the open end surfaces of 200 to 300 glass containers per minute.

(Effects of the Invention) As detailed above, the glass container mouth coating device according to the present invention includes a single sponge roll that applies adhesive to the open end surface of the glass container being conveyed by the conveyance device; The sponge roll is equipped with an adhesive supply means for supplying adhesive to the sponge roll, and an adhesive application amount control means for controlling the amount of adhesive applied by the sponge roll. , the adhesive is applied to the open end surface of the glass container by a single sponge roll having a sponge that absorbs liquid and releases the absorbed liquid by applying appropriate pressure.
When the glass container reaches the bottom of the sponge roll, the adhesive inside the sponge roll becomes a continuous phase due to the force of the open end surface pushing against the sponge roll, and the adhesive is evenly and continuously applied to the open end surface in contact with the sponge roll. can do. And when the glass container is separated from the sponge roll,
As the pushing force disappears, the sponge roll restores itself to its original state, air enters the sponge roll, and the adhesive contained within the sponge roll becomes a discontinuous phase, causing the open end surface and the sponge roll to The growth of the adhesive film between the elements is controlled, so that the application can be carried out without creating an adhesive film, and therefore the formation of an adhesive film and the tearing of this film lead to adhesive glass. No intrusion into the container occurs.

Furthermore, since sponge rolls have good liquid absorption properties, they have the advantage that low-viscosity adhesives can be applied to them, and that a variety of adhesives can be used. Furthermore, since the sponge roll has appropriate elasticity, desired coating can be performed even if the opening end surface is an inclined surface that is not flat. Furthermore, since only one sponge roll is used, the structure is simple and adjustment is easy.

Since the amount of adhesive applied by the sponge roll is controlled by the adhesive application amount control means, it is possible to adjust the amount of adhesive applied to the opening end surface. On the other hand, the adhesive can be applied thinly and continuously to a desired thickness.

Another advantage is that since the adhesive can be applied while moving the glass container, the time required for application can be shortened.

[Brief explanation of the drawing]

1 to 6 show an embodiment of the present invention,
Fig. 1 is a longitudinal sectional view of the device of the present invention, Fig. 2 is an overall perspective view, Fig. 3 is a sectional view near the sponge roll, Fig. 4 is a partial sectional perspective view showing the support structure of the main frame, and Fig. 5 is a partial plan view near the sponge roll,
FIG. 6 is an explanatory diagram of the operation. 3...Sponge roll, 8...Liquid supply head (adhesive supply means), 21...Adhesive, 22...Squeeze roller (adhesive application amount control means), 23...
Glass container, 24...open end surface, CV...conveying device.

Claims (1)

[Claims for Utility Model Registration] (1) A single sponge roll for applying adhesive to the open end surface of a glass container transported by a transport device, and an adhesive supply means for supplying adhesive to this sponge roll. and an adhesive application amount control means for controlling the amount of adhesive applied by the sponge roll. (2) Utility model registration claim No. 1, in which excess adhesive is removed from the adhesive supplied to the sponge roll by the adhesive supplying means.
The apparatus for coating the mouth of a glass container as described in (1). (3) The scope of the utility model registration claim No. 1 is such that the liquid supply level of the adhesive supply means can be adjusted up and down.
The apparatus for coating the mouth of a glass container as described in (1).