JP3532684B2 - Sealing compound coating device for can lid - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a can lid sealing compound coating device for transporting a disc-shaped can lid and applying a sealing compound to the peripheral portion of the can lid.

[0002]

2. Description of the Related Art Conventionally, there is known a can lid sealing compound applying device for applying a sealing compound to a peripheral portion of the can lid while transporting a disk-shaped can lid.

In this type of coating apparatus, the can lid is held on the peripheral portion of the turntable and conveyed by the rotation of the turntable, and the sealing compound is applied to the peripheral portion of the can lid during the conveyance. More specifically, the can lid held on the turntable is transported while being rotated. A nozzle that rotates in synchronism with the turntable is provided above the transported can lid with its tip facing a point on the peripheral edge of the can lid. The sealing compound is ejected from the nozzle, and the sealing compound is applied to the entire periphery of the rotating can lid.

By the way, the residue of the jetted sealing compound adheres to the tip of the nozzle and grows over time. When the residue is separated from the nozzle, it may stain the turntable or adhere to the can lid to which the sealing compound is applied, and deteriorate the quality of the can lid.

Therefore, the applicant of the present invention previously filed Japanese Utility Model Application No. 1-6.
No. 4380 (Jpn. Pat. Appln. KOKAI Publication No. 6-22465) proposes a can lid sealing compound coating device which solves the above-mentioned inconvenience.

In the coating device, the turntable is turned from a position where the can lid is ejected to a position where the can lid is loaded into the turntable, that is, a position where the turntable does not hold the can lid. A residue removing means for removing residue from the tip of the nozzle that rotates in synchronization with the table is provided.

Explaining the structure of the debris removing means, a turntable is provided, which is turned in correspondence with a turning locus of the tip of the nozzle, and the nozzle is provided on the entire periphery of the turntable. A mat is provided to wipe off the residue from the tip. Further, an adhesive tape that adheres the residue transferred from the nozzle to the mat and removes the residue from the mat is wound up and driven in contact with the upper surface of the mat.

According to the residue removing means, the rotated nozzle contacts the mat of the rotating turntable every time the application of the sealing compound to one can lid is completed.
The residue on the nozzle can be wiped off with a mat.
Then, the residue transferred to the mat adheres to the adhesive tape and is removed from the mat, and the residue of the nozzle can be removed by the mat without lowering the wiping effect.

However, the residue removing means has a high removal effect when the compound applied to the can lid is a solvent base compound, but when the compound is a water base compound, the efficiency of removing the residues from the nozzle is lowered. This is because the solvent-based compound uses an organic solvent with a high volatilization rate as a solvent, whereas the water-based compound uses water with a low volatilization rate as a solvent. That is, since the residue of the solvent base compound begins to dry at a high speed when it adheres to the nozzle, it is separated from the nozzle in a state close to a solid when it is wiped off with a mat. Further, since the residue transferred to the mat is already in a state of being almost solid, it can be easily attached to the adhesive tape and removed efficiently.

On the other hand, the residue of the water base compound does not dry for a long time even if it adheres to the nozzle. Therefore, when the debris removing means is not provided, the debris attached to the nozzle does not separate from the nozzle until it grows relatively large, but the debris removing means is provided in preparation for the adverse effect due to the separation of the debris. In the case where the nozzle is provided and the residue of the nozzle is to be removed, even if the nozzle comes into contact with the mat, the residue is merely rubbed on the nozzle, and the residue cannot be sufficiently removed from the nozzle. Moreover, since the residue transferred to the mat is not sufficiently dried, it becomes difficult to attach it to the adhesive tape.

Therefore, when the compound to be applied to the can lid is conventionally a water-based compound, it is not possible to employ the above-mentioned residue removing means, and the entire application device is operated every predetermined time when the residue grows to some extent. There is an inconvenience that the operator stops the nozzles and wipes the residue from the nozzles, and the operation of applying the compound to the can lid stops during that time. Moreover, in general, this type of coating device is provided along the can lid manufacturing line and applies the compound to the can lid continuously conveyed from the previous step. ,
Since the entire can lid manufacturing line is stopped, there is a disadvantage that the can lid manufacturing efficiency is significantly reduced.

[0012]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a can lid sealing compound coating device suitable when the compound to be coated on the can lid is a water-based compound. And

[0013]

In order to achieve the above object, the present invention mounts a disc-shaped can lid, which is inserted from a loading position, on a peripheral portion and rotates the can lid while rotating the can lid. A disk-shaped can lid conveying means that conveys the can lid and dispenses the can lid at a dispensing position, and a disc that rotates in synchronization with the can lid conveying means and is conveyed by the can lid conveying means. The coating means provided with a nozzle for coating the sealing compound on the peripheral portion of the can lid, and the can lid transporting means with the can lid dispensed at the dispensing position are provided at positions that rotate toward the loading position. in sealing compound coating apparatus of the can lid and a residue removing means for removing the residue of the sealing compound adhering to the tip of the nozzle which rotates in synchronization with the can lid transport means, said residue removing means, said Bruno
A part corresponds to the rotation trajectory of the tip of the cheat
A turntable that rotates a fixed number of times and the turntable that is provided on the turntable
Touch the tip of the nozzle while the board rotates a predetermined angle
A mat to which the residue of the nozzle is transferred, and an adhesive tape that is pressed against a surface of a part of the mat and is driven to wind in synchronization with the rotation of the turntable to attach the residue transferred to the mat. And the turntable is provided when the turntable is stopped.
The nozzle is placed at a position corresponding to the rotation trajectory of the tip of the nozzle.
No nozzle contact that the nozzle passes without touching the nozzle
It is characterized in that a touch portion is formed .

According to the present invention, the mat is provided.
The turntable is in a stopped state for a predetermined time, and at this time,
The nozzle has a plurality of nozzle non-contact portions formed on the turntable.
Pass several times. During this time, the mat is in contact with the nozzle
Since it is in a non-existent state, the residue of the water-based compound using water as a solvent is gradually dried and grows while being attached to the nozzle. After that, the turntable passes the predetermined time.
After rotating, the mat touches the tip of the rotating nozzle.
It As a result, the residue attached to the nozzle is transferred to the mat. In this way, even if the residue adhered to the nozzle is water-based compound, it does not come into contact with the nozzle.
Transfers to mat after being dried to some extent while passing through the touch
Since it grows to a state that is easy to do, it is possible to reliably transfer the residue from the nozzle to the mat.

On the other hand, the pressure-sensitive adhesive tape is prevented from being consumed while the winding is stopped when the rotary disk is stopped. Then, during rotation of the turntable, the take-up drive is in a state of being pressed against the portion of the surface of said mat
It is, can be removed residue from efficiently matting by adhering residue which was transferred to Ma Tsu and. At this time, even if the residue is transferred to the mat, even if it is a water-based compound, the tip of the nozzle does not come into contact with the mat when the turntable is stopped , and drying is promoted in a state where it adheres to the nozzle. Since it is already in a state of easily adhering to the adhesive tape, the residue of the mat can be efficiently removed.

[0016]

[0017]

[0018]

As described above, according to the present invention, even if the compound applied to the can lid is a water-based compound, the residue of the nozzle can be removed without stopping the coating device, and the can lid can be removed. It is possible to prevent the production efficiency from decreasing.

Further, in the present invention, it is preferable that the residue removing means includes a heating means for heating the mat.

By heating the mat, first, the drying speed of the residue transferred to the mat can be increased. Therefore, the residue transferred to the mat and dried is more likely to adhere to the adhesive tape, and the residue can be efficiently removed from the mat. Furthermore, by heating the mat, the residue of the nozzle that receives the heat of the mat when the nozzle contacts the mat accelerates drying, and the residue can be reliably separated from the nozzle and transferred to the mat. Therefore, it is possible to more reliably remove the residue from the nozzle.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION The following will describe an embodiment of the present invention. FIG. 1 is an explanatory plan view showing a schematic configuration of a main part of a sealing compound coating device according to the present embodiment,
FIG. 2 is an explanatory view in which the residue removing means is viewed in a vertical cross section, FIG. 3 is an explanatory view showing a main part of the residue removing means, and FIGS. 4 and 5 are operation illustrations of the residue removing means.

The sealing compound applying apparatus of the present embodiment is provided with a water base compound (sealing using water as a solvent) on the inner surface side of the seaming wall formed on the peripheral portion of the disk-shaped can lid in the can lid manufacturing line. This is a device for applying a compound.

In FIG. 1, 1 is a can lid conveying means, 2 is a can lid introducing means for inserting the can lid W into the can lid conveying means 1, and 3 is a can for discharging the can lid W from the can lid conveying means 1. It is a lid ejection means. Further, in FIG. 2, 4 is a coating means for applying a sealing compound to the can lid W being conveyed by the can lid conveying means 1, and 5 is a residue removing means.

As shown in FIG. 1, the can lid transporting means 1 is provided with a plurality of holding portions 6 for holding a plurality of can lids W at the peripheral portion thereof with their inner surfaces facing upward, respectively. A turntable 7 that rotates in the transport direction of W and a can lid rotating means (not shown) that rotates the can lid W of each holding unit 6 of the turntable 7 are provided.

The can lid loading means 2 is provided at the loading position A of the can lid W into the can lid transporting means 1, holds the can lid W to which the sealing compound is applied, and loads it into the turntable 7. It comprises a member 8 and a loading guide member 9 for guiding the can lid W held by the loading member 8 in the loading direction.

The can lid dispensing means 3 is provided at the dispensing position B of the can lid W from the can lid transporting means 1 and dispenses the can lid W coated with the sealing compound along the dispensing path 10. 11 and a dispensing guide member 12 that guides the can lid W sent to the dispensing turret 11 along the dispensing path 10. The dispensing guide member 12 and the dispensing guide member 9 are integrally formed on both sides of a plate member 13 provided between the dispensing position A and the dispensing position B.

As shown in FIG. 2, the coating means 4 has a frame body 14 facing the turntable 7 and rotating in synchronization with the turntable 7, and a frame body 14 fixed to the frame body 14,
The turntable 7 is constituted by a nozzle device 16 provided with a nozzle 15 facing one point of the peripheral edge of the can lid held by the holding portion 6. The nozzle device 16 is provided with a supply pipe 17 for sending a sealing compound supplied from a sealing compound supply means (not shown) to the nozzle 15, and a plurality of the nozzle devices 16 are provided corresponding to each holding portion 6 of the turntable 7.

The debris removing means 5 removes the debris of the sealing compound attached to the tip of the nozzle 15, and is provided between the charging position A and the dispensing position B as shown in FIG. There is. The debris removing means 5 is
As shown in FIG. 1, the rotation locus C of the tip of the nozzle 15 is shown.
Is provided with a turntable 18 that partially rotates. The turntable 18 is provided with a mat 19 at its peripheral portion, which comes into contact with the nozzle 15 through the turning locus C of the tip of the nozzle 15 when the turntable 18 rotates. As will be described later in detail, the mat 19 wipes off the sealing compound attached to the nozzle 15 when it comes into contact with the nozzle 15. Further, the mat 19 is not provided all around the periphery of the turntable 18, and in the portion where the mat 19 is not provided, the tip of the nozzle 15 contacts the turntable 18. The nozzle non-contact portion 20 that passes without being formed is formed.

As shown in FIG. 2, the turntable 18 is rotatably supported by a support plate 21 horizontally provided on the plate-like member 13 between the loading position A and the dispensing position B, and the rotation driving means. Two
It is rotationally driven by 2. The rotation driving means 22 applies a tension to the driven pulley 23 provided coaxially with the rotary disk 18, a drive pulley 25 connected to the driven pulley 23 via an endless belt 24, and a tension applied to the endless belt 24. An auxiliary pulley 26 for preventing the loosening is provided. The drive pulley 25 has a drive gear 27 coaxial therewith,
A worm 28 is meshed with the drive gear 27. The worm 28 is rotationally driven by an air motor (not shown).

The rotary driving means 22 drives the rotary disk 18 to rotate at predetermined intervals by a timer (not shown). Specifically, when the turntable 18 is stopped, as shown in FIG.
The nozzle non-contact portion 20 is positioned at the position, and the turntable 18 is rotated after a predetermined time has elapsed. Then, the turntable 18 rotated by a predetermined number of rotations is stopped so that the nozzle non-contact portion 20 is positioned on the rotation locus C of the tip of the nozzle 15. The rotation speed of the turntable 18 at this time is controlled by the rotation drive time set by the timer.

Further, as shown in FIG.
At the position opposite to the side of the tip of the nozzle 15 corresponding to the rotation locus C, an adhesive tape 29 for sticking the residue transferred to the mat 19 is provided. The adhesive tape 29
Is provided so as to be interposed between the pressure contact roller 30 pressed against the mat 19 and the mat 19, and is driven by a winding device (not shown). Although not shown in the drawing, the winding device winds the supply reel around which the adhesive tape 29 is wound and the adhesive tape 29 supplied from the supply reel through the pressure contact roller 30. And a winding drive means for driving the winding reel.

Further, as shown in FIGS. 1 and 3, a pair of heaters 31 (heating means) facing the part of the mat 19 is provided above the turntable 18. The heaters 31 are supported on both sides of a support plate 21 that pivotally supports the turntable 18, and heat the mat 19 that passes below the heater 31 when the turntable 18 rotates and attach it to the mat 19. Accelerate the drying of the remaining residue.

Next, the operation of the sealing compound coating device of this embodiment having the above-mentioned structure will be described.

First, referring to FIG. 1, the can lid W is loaded into the turntable 7 of the can lid transfer means 1 by the can lid loading means 2. The can lid W held by the holding portion 6 of the turntable 7 is conveyed by the turning of the turntable 7 while being rotated by the can lid rotating means. The can lid W on the turntable 7 is coated with the sealing compound X by the nozzle device 16 which rotates in synchronization with the turntable 7. The nozzle 15 of the nozzle device 16 faces a point on the peripheral portion of the can lid W, and the sealing compound X is applied to the entire periphery of the peripheral portion of the can lid W as the can lid W is rotated. You can Then, the can lid W to which the sealing compound X has been applied is dispensed from the turntable 7 at the dispensing position B by the dispensing turret 11 of the can lid dispensing means 3.

Next, the nozzle device 16 is rotated together with the turntable 7 to turn the rotary disc 1 of the debris removing means 5.
8 passes above the nozzle 8, but as shown in FIG. 4A, the tip of the nozzle 15 passes over the nozzle non-contact portion 20 of the turntable 18, so that the residue remains attached to the tip of the nozzle 15. As it is, the can lid W moves toward the loading position A (see FIG. 1). The stop state of the turntable 18 is continued for a predetermined time by the timer. As a result, the nozzle 15 passes over the nozzle non-contact portion 20 of the turntable 18 a plurality of times.
Even if the residue of the water base compound adheres to the nozzle 15, it does not dry for a long time and does not separate from the nozzle 15 until it grows to a relatively large size. As shown in FIG. 4B, while the nozzle 15 passes over the nozzle non-contact portion 20 a plurality of times, the residue X ₁ is gradually dried and grows while being attached to the nozzle 15.

Then, after a predetermined time has elapsed (every 10 to 15 minutes in this embodiment), the rotary disk 18 is rotated by the timer. As a result, as shown in FIG. 5A, the mat 19 moves to a position corresponding to the rotation trajectory C of the tip of the nozzle. At this time, FIG.
As shown in, the mat 19 contacts the rotating nozzle 15, and the residue attached to the nozzle 15 is transferred to the mat 19. As described above, the residue transferred to the mat 19 is dried to some extent when the turntable 18 is stopped, and
Since it has grown so that it can be easily transferred to the mat 19, it is possible to reliably transfer the residue from the nozzle 15 to the mat 19 even if the drying speed is slow such as in a water-based compound. In the present embodiment, the rotation number of the turntable 18 is set to any one of 1 to 3 times by the timer.

On the other hand, as the turntable 18 rotates, as shown in FIG.
As shown in (a), the adhesive tape 29 is wound and driven. Thus, the residue transferred to the mat 19 can be attached to the adhesive tape 29 and removed from the mat 19. In addition, the heater 31 (see FIG. 3) heats the mat 19 to increase the drying speed of the residue transferred to the mat 19, and the residue transferred to the mat 19 and dried easily adheres to the adhesive tape 29. To be extinguished. Further, the heater 31 heats the mat 19 so that when the nozzle 15 contacts the mat 19, the residue of the nozzle 15 that receives the heat of the mat 19 accelerates the drying, and the residue from the nozzle 15 is surely ensured. Take off mat 19
Therefore, it is possible to reliably remove the residue from the nozzle 15.

Further, the adhesive tape 29 is the rotary disk 18
By driving to wind only when is rotated, the adhesive tape 29 is not consumed when the turntable 18 is in a stopped state, and the consumption amount of the adhesive tape 29 can be extremely reduced.

After that, the nozzles 1 of all the nozzle devices 16 are
5 and the mat 19 are contacted with each other, and when the residue is removed from each nozzle 15, the nozzle 15 does not contact the nozzle of the turntable 18 by the time control of the timer, as shown in FIG. The rotation of the turntable 18 is stopped so as to pass over the portion 20.

[Brief description of drawings]

FIG. 1 is an explanatory plan view showing a schematic configuration of a main part of a sealing compound coating device of the present embodiment.

FIG. 2 is an explanatory view showing a vertical cross-section of a residue removing means.

FIG. 3 is an explanatory view showing a main part of a residue removing means.

FIG. 4 is an explanatory view of the operation of the residue removing means.

FIG. 5 is an operation explanatory diagram of a residue removing means.

[Explanation of symbols]

A ... on position, B ... payout position, C ... rotation locus, W ... can lid, X ... sealing compound, X ₁ ... residue, 1 ... can lid transport means, 4 ... coating unit, 5 ... residue removing means 15 …
Nozzle, 18 ... Rotating disk, 19 ... Mat, 20 ... No nozzle contact portion, 29 ... Adhesive tape, 31 ... Heater (heating means).

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B05C 5/00 B05C 13/02

Claims (2)

(57) [Claims] 1. A disk-shaped can lid placed from a loading position is placed on a peripheral portion and is rotated while rotating the can lid to convey the can lid, and the can lid is dispensed at a dispensing position. Coating with a disk-shaped can lid conveying means and a nozzle that rotates in synchronization with the can lid conveying means and that applies a sealing compound to the peripheral portion of the rotating can lid conveyed by the can lid conveying means. Means and a can lid carrying means with the can lid paid out at the dispensing position are provided at a position that rotates toward the loading position, and at the tip of the nozzle that rotates in synchronization with the can lid carrying means. In a sealing compound applying device for a can lid, which is provided with a residue removing means for removing the residue of the adhered sealing compound, the residue removing means is arranged on a rotation locus of the tip of the nozzle.
A turntable corresponding to a unit that turns a predetermined number of times at a predetermined time;
It is provided on the turntable and while the turntable rotates a predetermined angle.
Contact with the tip of the nozzle to transfer the residue from the nozzle
The mat and the part of the mat are pressed against each other and rotated.
An adhesive tape that is driven to wind in synchronism with the rotation of the disk and adheres the residue transferred to the mat , and the rotary disk is attached to the tip of the nozzle when the rotary disk is stopped.
Touching the nozzle at a position corresponding to the rotation trajectory
No nozzle non-contact part is formed through which the nozzle passes
Sealing compound coating apparatus can lid, characterized in that that. 2. The residue removing means heats the mat.
The sealing compound applying device for a can lid according to claim 1, further comprising: