JPH0678111B2 - Method and device for removing temporary lid attached to drum mouth - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method and an apparatus for removing a temporary lid attached to a mouth of a drum can, wherein the temporary lid means the inside of the drum during painting or drying of the drum. This is a lid that temporarily closes the mouth of the drum to prevent foreign matter from entering.

(Prior Art) When painting a drum can, the mouth is closed with a temporary lid to prevent paint and other foreign matter from entering the can.

As an example of a temporary lid, the one described in JP-A-63-218091 is known. The temporary lid known in the above publication is a label having an adhesive surface, and the adhesive on the adhesive surface is applied in stripes so that the mouth is not completely closed by the temporary lid. The feature is that the inside of the drum can communicates with the atmosphere. Further, the above publication also introduces a method of removing the temporary lid from the drum can mouth portion.

The method of removing the temporary lid described in the above publication is a suction method, in which negative pressure air is supplied to the temporary lid attached to the mouth to try to remove the temporary lid by suction.

The drum can has a large mouth and a small mouth, and a temporary lid is attached to these two mouths. Since the purpose of attaching the temporary lid to the mouth of the drum can is to prevent paint and other foreign matter from entering the can during the painting work, the temporary lid must be attached to the two mouths. . However, if negative pressure air is supplied to the temporary lid attached to one mouth to remove the temporary lid, the negative pressure air supplied will cause the temporary lid attached to the other mouth to As a result, the temporary lid attached to the other mouth portion may be sucked into the can during removal of the temporary lid.

Once the temporary lid is inside the can, it is almost impossible to remove it, and such a can becomes unusable as a drum and must be discarded. Therefore, there is a problem that a means for sucking and removing the temporary lid attached to the mouth portion by using negative pressure is not practical.

(Problem to be Solved by the Invention) The present invention is to provide a method and an apparatus for removing a temporary lid attached to a mouth portion of a drum by utilizing the adhesive force of an adhesive tape.

(Means for Solving the Problem) A first means of the present invention is to intermittently supply an adhesive surface of an adhesive tape to a drum can mouth portion and press the adhesive surface to a temporary lid attached to the mouth portion. Then, the temporary lid is transferred to the adhesive surface of the adhesive tape to remove the temporary lid from the mouth of the drum.

The second means of the present invention is to provide a temporary lid removing roller below the vertically movable base frame, to provide a drive shaft and a driven shaft above and below the temporary lid removing roller, and to form a coil on the driven shaft. Unwound unused adhesive tape is attached, the tip of the adhesive tape is wound around the drive shaft by wrapping the temporary lid removing roller with the adhesive surface on the outside, and the drum can mouth is conveyed directly below the temporary lid removing roller. When the base frame is lowered, the pressure-sensitive adhesive surface of the pressure-sensitive adhesive tape is pressed against the temporary lid attached to the drum can mouth portion, and the temporary lid is transferred to the adhesive surface of the pressure-sensitive adhesive tape to temporarily move the drum lid mouth portion. The device is characterized by removing the lid.

(Operation) The drum 1 is sent below the temporary lid removing roller 11, and the mouth 2
When it is confirmed that the positioning of the temporary lid removing roller 11 is completed, the entire temporary lid removing device including the temporary lid removing roller 11 is lowered, and
The adhesive surface 10b of 10 is pressed against the mouth portion 2, the temporary lid 3 of the mouth portion 2 is transferred to the adhesive surface 10b of the adhesive tape 10, and then the device is raised. Since the temporary lid 3 removed from the mouth 2 is adhered to the adhesive tape 10, the drive shaft 12 is driven to rotate and the adhesive tape 10
To the new adhesive surface 10b on the lower surface of the temporary lid removing roller 11.
To supply.

(Embodiment) FIG. 1 is a schematic view of the present invention, and FIGS. 2 to 4 are specific examples of the removing device. In these figures, 1 is a drum can, 2 is a mouth portion, 3 is a temporary lid attached to the mouth portion 2, one large mouth and one small mouth are provided. The lid 3 is in the form of a label having an adhesive surface as described in, for example, Japanese Patent Laid-Open No. 63-218091.

In FIG. 1, 10 is an adhesive tape, 11 is a temporary lid removing roller provided above the drum can 1, 12 is a drive shaft,
13 is a driven shaft. The adhesive tape 10 is wound in a coil shape, the unused portion 10a is attached to the driven shaft 13, and the adhesive tape 10 pulled out is wound around the temporary lid removing roller 11 with the adhesive surface 10b outside. The used portion 10c is wound around the drive shaft 12.

When the drum can 1 is carried in below the temporary lid removing roller 11 and the opening 2 is positioned, the opening 2 is closed by the temporary lid removing roller 11.
It is set directly under. Since the temporary lid 3 is attached to the mouth portion 2 as described above, when it is confirmed that the mouth portion 2 is set below the temporary lid removing roller 11, the temporary lid including the temporary lid removing roller 11 is attached. Move down the entire removal device and attach the adhesive tape 10
The adhesive surface 10b of No. 2 is pressed against the mouth portion 2, the temporary lid 3 of the mouth portion 2 is transferred to the adhesive surface 10b of the adhesive tape 10, and then the apparatus is raised. Since the temporary lid 3 removed from the mouth portion 2 is attached to the adhesive tape 10, the drive shaft 12 is rotationally driven to move the adhesive tape 10, and a new adhesive surface 10b is formed on the lower surface of the temporary lid removing roller 11. Supply.

The drum 1 from which the temporary lid 3 has been removed is carried out from that position,
The next drum 1 to which the temporary lid 3 is attached is carried in below the temporary lid removing roller 11. Then, in the above procedure, the temporary lid 3 is sequentially
To remove.

The adhesive tape 10 is attached to the temporary lid 3 and wound around the drive shaft 12, and when the entire adhesive tape is used, the drive shaft
Remove the used tape wound around 12 from the drive shaft 12,
A new adhesive tape 10 is attached to the driven shaft 13.

Since the present invention peels off the temporary lid by using the adhesive force of the adhesive tape, the adhesive applied to the adhesive surface of the adhesive tape may have a larger adhesive force than the adhesive force of the temporary lid. Although required, since the temporary lid is only attached to the edge of the mouth, the adhesive tape that is commercially available as a packaging material can be used.

2 to 4 are specific examples of the temporary lid removing device. 14 is a frame on which the temporary lid removing device is assembled, the top of the frame
An air cylinder 15 for moving the piston rod downward is provided at 14a. Reference numeral 16 is a bracket provided on the lower surface of the frame top portion 14a, which is provided with a guide 17, to which a base frame 18 which can be raised and lowered is mounted. The piston rod of the air cylinder 15 is connected to the base frame 18, and the movement of the air cylinder 15 causes the base frame 18 to move up and down.

The temporary lid removing roller 11, the drive shaft 12, and the driven shaft 13 are incorporated in the base frame 18. The mouth part 2 of the drum can is large and small one is provided at the symmetrical position of the drum can top plate,
By disposing the temporary lid removing roller 11, the drive shaft 12, and the driven shaft 13 in front of and behind the base frame 18, large and small temporary lids can be simultaneously removed by one removal operation (see FIG. 4). .

The temporary lid removing roller 11 is preferably a rubber roller, which is rotatably attached to the lowermost position of the base frame 18 by a pivot 11a, has flanges 11b on both side edges, and has a roller lower surface protruding from the base frame 18. The drive shaft 12 is connected to an output shaft of a motor 19 with a speed reducer provided on a base frame 18 above the temporary lid removing roller 11, and the drive shaft 12 has an adhesive tape 10 (not shown). The reel core 10d is provided with a coupling means capable of being firmly coupled. Furthermore, the driven shaft 13
Is rotatably provided on the base frame 18 at a position corresponding to the drive shaft 12, and the driven shaft 13 is also not shown in the drawing, but is not shown in the drawing. Is equipped with.

In addition, a first guide roller 20 is provided between the temporary lid removing roller 11 and the drive shaft 12, and a second guide roller 21 is provided between the temporary lid removing roller 11 and the driven shaft 13. Has been. When the second guide roller 21 is used as a tension roller, a bearing plate having the roller attached thereto is used.
A support shaft 23 for attaching 22 to the base frame 18 can be moved in and out of the base frame 18, a coil spring (not shown) is mounted between the bearing plate 22 and the base frame 18, and the second guide roller 21 is attached. The guide roller 21 is biased away from the guide roller 21.

In the above-mentioned specific example, the unused adhesive tape 10 has the reel core 10d mounted on the driven shaft 13, and the tape pulled out has the adhesive surface 10d as the outer side, and the second guide roller 21, the temporary lid removing roller 11, The one guide roller 20 is wound around and wound around and fixed to an empty reel core 10d mounted on the drive shaft 12. If the temporary lid removing operation is continuously performed, the reel core 10d of the used adhesive tape remains on the driven shaft 13, so when the adhesive tape 10 is mounted, the reel core 10 left on the driven shaft 13 is mounted.
After replacing d with the drive shaft 12, follow the procedure above to
It is good to roll out 0.

When the drum can 1 is carried in below the apparatus and the mouth 2 is set directly below the temporary lid removing roller 11, the air cylinder 15
Is operated to project the piston rod, the base frame 18 is lowered, and the temporary lid removing roller 11 is brought into pressure contact with the temporary lid 3 attached to the mouth portion 2, and the temporary lid 3 is attached to the adhesive surface 10b of the adhesive tape 10. Transfer.

Next, when the air cylinder 15 is returned to raise the base frame 18,
Since the temporary lid 3 is attached to the adhesive surface 10b of the adhesive tape 10,
At this time, the motor 19 is driven to rotate the drive shaft 12 to move the adhesive tape 10 to the drive shaft side, and the temporary lid removing roller 11 is supplied with a new adhesive surface 10b to which a temporary lid is not attached.

By repeating this operation, the temporary lid 3 attached to the drum opening is removed.

(Effects of the Invention) The present invention, when the temporary lid attached to the mouth of the drum can is in the form of a label coated with an adhesive, presses the adhesive surface of the adhesive tape onto the temporary lid attached to the mouth of the drum. Then, the temporary lid is moved to the adhesive tape side, whereby the temporary lid is removed from the mouth of the drum can, so that the other temporary lid does not enter the drum can during the removal work of the temporary lid, This has the effect of reliably removing the temporary lid.

[Brief description of drawings]

 FIG. 1 is an explanatory view showing the outline of the present invention, FIG. 2 is an overall front view showing a specific example of a temporary lid removing device, FIG. 3 is a side view of a temporary lid removing roller, and FIG. 4 is FIG. It is a top view of an apparatus. 1 ... Drum can, 2 ... Port 3 ... Temporary lid, 10 ... Adhesive tape 11 ... Temporary lid removing roller, 12 ... Drive shaft 13 ... Driven shaft, 14 ... Frame 15 ... Air cylinder, 16 …… Bracket 17 …… Guide, 18 …… Base frame 19 …… Motor, 20 …… First guide roller 21 …… Second guide roller, 22 …… Bearing plate 23 …… Support shaft

Claims (3)

[Claims] 1. A method for removing a temporary lid from a drum can opening, wherein the temporary lid attached to the drum can opening is a label coated with an adhesive. To remove the temporary lid from the drum can mouth portion by intermittently supplying the temporary lid to the mouth portion and pressing the adhesive surface to the temporary lid attached to the mouth portion to transfer the temporary lid to the adhesive surface of the adhesive tape. Characteristic method of removing the temporary lid. 2. A device for removing the temporary lid from the drum can opening, wherein the temporary lid attached to the drum can opening is a label-like one coated with an adhesive, A temporary cover removing roller is provided, a drive shaft and a driven shaft are provided above and below the temporary cover removing roller, and an unused adhesive tape wound in a coil shape is attached to the driven shaft, and the tip of the adhesive tape is an adhesive surface. With the outer side of the temporary lid removing roller wound around the drive shaft, and when the drum can mouth portion is conveyed directly below the temporary lid removing roller, the base frame is lowered to be attached to the drum can mouth portion. A temporary lid removing device, characterized in that the temporary lid is removed from the drum can opening by pressing the adhesive surface of the adhesive tape to the existing temporary lid and moving the temporary lid to the adhesive surface of the adhesive tape. 3. A temporary lid removing roller and a drive shaft and a driven shaft are provided so as to be paired at symmetrical positions of a base frame, and temporary lids attached to large and small drum can mouths can be operated by one operation. The temporary lid removing device according to claim 2, wherein the temporary lid removing device can be removed at the same time.