JPH027767Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a film label wrapping device that wraps a film label around the body of a bottle and heat-seals the overlapping portions at both ends of the label. It is.

[Prior Art] Conventionally, this type of wrapping device has been used to wrap a film label around a dummy mandrel with a tacker and temporarily fix it with a spot heater, then form it into a sleeve shape with a finishing heater, and then wrap the film label around the outer periphery of the mandrel. A method of attaching a label to a cylindrical container has been proposed (Japanese Patent Laid-Open No. 60-90121), which is characterized in that a sleeve-shaped label is transferred to a cylindrical container placed in the matching position.

According to this method, by using a mandrel and transferring labels, continuous operation is possible with a simple mechanism, and labels can be attached to cylindrical containers at high speed.

[Problems to be solved by the invention] However, the above method for attaching labels to cylindrical containers is
When the mandrel is pushed into the pocket of the transport drum, the label is held on the transport drum only by negative pressure air, so if there are variations in the smoothness of the drum circumference or the shape or diameter of the air holes, the label may There is a problem in that the end of the label tends to be misaligned when it is wound around a mandrel.

In addition, the above method for attaching labels to cylindrical containers involves wrapping the label around a mandrel to form a sleeve, and then transferring the sleeve-shaped label to the cylindrical container. It is difficult to strengthen the adhesion of the label to the container. Therefore, there is a risk that the label may slip off while the cylindrical container is in use. In particular, if the cylindrical container has a step and the outer diameter of the label attachment part of the cylindrical container is smaller than the outer diameter of the mandrel, there is a problem that the label cannot be attached using the above method.

SUMMARY OF THE INVENTION An object of the present invention is to provide a wrapping device for a film label that causes little displacement of the label end when wrapped around a bottle and can be wrapped around the body of a bottle with a step.

Another object of the present invention is to provide a film label wrapping device that can neatly wrap a label around a bottle with constant tension without loosening, and that prevents the label from slipping off the bottle while the bottle is in use. .

[Means for Solving the Problems] In order to achieve the above object, the configuration of the present invention will be explained based on FIG. 1 corresponding to an embodiment.

The wrapping device of the present invention has a bottle pocket 1.
5 on the circumference and rotates while adsorbing a film label A slightly longer than the bottle circumference using negative pressure air so as to close the opening of the pocket 15.
4, a label displacement prevention plate 24 that temporarily presses and fixes a part of the label A attracted to the conveyance drum 14 against the drum 14, and while this prevention plate 24 fixes the part of the label A, Bottle pushing means 19 pushes the bottle B into the pocket 15 and attaches the label A to the front and both sides of the bottle B, and the bottle pushes one side of the label A which has protruded from the pocket 15 and is adsorbed onto the drum 14 by negative pressure air. A label fixing arm 17 that presses the vicinity of one end of the label A against the back side of the bottle B while stroking it from the side to the back side of the bottle B, and the pocket 15
An air blowing means P for separating the other side of the label A protruding from the circumferential surface of the conveying drum 14;
a guide plate 38 for superimposing the other end of the label A on one end of the label A while adhering it from the side to the back; welding means 42 and 43 for thermally welding the superimposed labels A; and a bottle B to which the label A is welded. It is equipped with a discharge means 44 for discharging the liquid from the pocket 15.

[Operation] The bottle B is pushed by the bottle pushing means 19 into the bottle pocket 15 of the conveyance drum 14 that has absorbed the label A. When the bottle B is pushed in, the displacement prevention plate 24 prevents the label A adsorbed onto the drum 14 from shifting.

Next, the label fixing arm 17 presses the vicinity of one end of the label A against the back of the bottle B while rubbing one side of the label A from the side to the back of the bottle B, and then the air blowing means P removes the label A protruding from the pocket 15. After separating the other side from the circumferential surface of the conveyance drum 14, the guide plate 3
8, the other end of the label A separated from the drum circumferential surface is placed over the bottle B from the side surface to the back surface, and the other end of the label A is overlapped with one end of the label A.

The stacked labels A are thermally welded by the welding means 42 and 43, and the bottle B is discharged from the pocket 15 by the discharge means 44.

[Example] Next, an example of the present invention will be described in detail based on the drawings.

As shown in FIG. 5, the wrapping device of this embodiment wraps a film label A around the stepped body of a cylindrical bottle B, and thermally welds the overlapping portions a at both ends of the label A.

As shown in FIG. 1, a film roll D is loaded into a roll holder 11 mounted on a machine stand 10. As shown in FIG. A tape-shaped film F is pulled out from this holder 11 and guided to a cutter 12. The cutter 12 cuts the film F into a constant length slightly longer than the circumference of the bottle to form a film label A. Label A
is sent to the conveyance drum 14 by the label guide 13. In this example, eight bottle pockets 15 are arranged at equal intervals on the circumferential surface of the conveyance drum 14. The conveyance drum 14 is arranged around the shaft 16 from G to N in the figure.
It rotates intermittently in the direction of the arrow while temporarily stopping at eight fixed points. Although not shown, the conveyance drum 14 has a large number of air holes on its circumferential surface, and is configured to suck the label A sent in by the label guide 13 by negative pressure and close the opening of the pocket 15.

A label fixing arm 17 is arranged near the eight pockets 15. These arms 17 are each provided so as to be able to protrude from the inside of the drum 14 to the opening of the pocket 15 from point J to point N by arm cams 18 fixed to the machine base 10 below the drum 14.

A bottle pushing device 19 is provided behind the label guide 13. This device 19 includes a conveyor 20, a first pusher 21, and a second pusher 22. Bottle B is conveyor 20 and pusher 21
After being carried to this point, it is pushed out by the pusher 21, further pushed out by the pusher 22, and then pushed into the pocket 15. Pushya 22 has pocket 15 J
Synchronous adjustment is made so that when the transport drum 14 reaches the point and stops, the bottle B is pushed out.

A label displacement prevention plate 24 is provided near the pusher 22. This anti-slip plate 24 prevents the pusher 22 from holding the bottle B in the pocket 15.
A part of the label A adsorbed on the conveying drum 14 is temporarily pressed against the drum 14 and fixed only while being pushed inside. As a result, while the bottle B is being pushed in, the position of the tip of the label A does not change. When the bottle B enters the pocket 15, the label A is attached to the front and both sides thereof.

While the drum 14 is temporarily stopped at point J, where bottle B enters the pocket 15, as shown in FIGS.
As shown in the figure, the label fixing arm 17 is configured to press one end of the label A protruding from the pocket 15 from the side to the back of the bottle B while pressing the vicinity of the end of the label against the back of the bottle B.

That is, a cylinder 26 is fixed to the machine base 10, and a piece cam 29 is pivotally attached to the tip of the rod 27. The cam 29 is swingably provided about a shaft 30, and a roller 32a of a lever 32 is pressed against the cam surface 29a by a spring 34. The lever 32 is provided to be swingable about a shaft 35, and the base end of the label fixing arm 17 is pivotally attached to the tip thereof. A sponge 17a, which is a soft elastic member, is attached to the tip of the arm 17. sponge 17a
has a length approximately equal to the height of label A. 3
6 is a compression spring for tensioning the label A.

While the drum 14 is stopped at point J where the bottle B enters the pocket 15, when the rod 27 of the cylinder 26 is extended, the peace cam 29 swings about the shaft 30 as a fulcrum. This causes the lever 32 to move to the shaft 35.
The sponge 17a at the tip of the label fixing arm 17 strokes one side of the label A protruding from the pocket 15 from the side to the back of the bottle B while moving the vicinity of the end of the label onto the bottle B.
Press it against the back of the The end a of the label in FIG. 3 is the overlapping part. Also, as shown in Figure 3,
When the piece cam 29 is cut so that the rod 27 of the cylinder 26 is extended, its cam surface 29a becomes the arm cam 18.
When the drum 14 resumes rotation, the roller 32a of the lever 32 aligns with the cam surface 29a.
a to roll on the cam surface 18a.

When the pocket 15 reaches point K, air P is blown out from an air hole (not shown) in the drum 14, causing the opposite end of the label A protruding from the pocket 15 to separate from the circumferential surface of the drum 14. A guide plate 38 made of a leaf spring is provided near the circumferential surface of the drum 14 between points K and L. This guide plate 38 overlaps the end of the label separated from the circumferential surface of the drum 14 from the side to the back of the bottle B, and overlaps the end of the other label fixed with the sponge 17a.

When pocket 15 reaches point L, presser plate 3
9 is advanced by the cylinder 40 and presses a part of the overlapping area a of the labels against the back surface of the bottle B. In this state, the spot heater 42 comes into pressure contact with the overlapping portion a of the labels, and as shown in _FIG.
Point welding is performed at two points a ₂ .

When the pocket 15 reaches point M, the finishing heater 43 moves forward and welds the entire overlapping area _a3 of the labels as shown in FIG.

Furthermore, when the pocket 15 reaches the N point, the bottle delivery arm 44 is operated, and the bottle B, with the film label A wrapped around the body and the overlapping portions heat-welded, is transferred from the pocket 15 to the discharge conveyor 45. .

In the above example, the tape-shaped film F is cut into film labels A before being transferred to the transport drum 14, but a fixed cutter is provided on the circumferential surface of the transport drum 14, Film F may be labeled A in the above example.

Furthermore, although the example in which the guide plate 38 is provided between the K point and the L point has been shown, the tip of the guide plate 38 is provided so as to be located at the L point, and the presser plate 38
9 may be omitted.

[Effects of the invention] As mentioned above, in the past, labels were indirectly wrapped around cylindrical containers using a mandrel as a dummy, but according to the present invention, film labels can be wrapped directly around the body of bottles. , the overlapping portion can be thermally welded.

In particular, while the film label is attached to the bottle, the label misalignment prevention plate and label fixing arm fix the film label to the bottle, so the label does not shift and there is no step on the body of the bottle. Even if the bottle is damaged, the label can be wrapped with a constant tension without loosening, which has an excellent effect of preventing the label from slipping off the bottle while the bottle is in use.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a wrapping device according to an embodiment of the present invention. FIGS. 2 and 3 are plan views of essential parts showing the operation of the label fixing arm. FIG. 4 is a side view of the bottle showing the point welding. FIG. 5 is a side view of the bottle showing the final welding. A: Film label; B: Bottle; Label misalignment prevention plate,
38: Guide plate, 42: Spot heater (welding means), 43: Finishing heater (welding means), 4
4: Bottle feeding arm (discharge means).

Claims (1)

[Scope of Claim for Utility Model Registration] A conveyance drum that has a bottle pocket on its circumference and rotates while adsorbing a film label slightly longer than the circumference of the bottle using negative pressure air so as to close the opening of the pocket; a label displacement prevention plate that temporarily presses and fixes a portion of the adsorbed label against the drum; and a label displacement prevention plate that temporarily presses and fixes a portion of the adsorbed label against the drum; A bottle pushing means is attached to the front and both sides of the bottle, and one of the labels protruding from the pocket and adsorbed to the drum by negative pressure air is stroked from the side to the back of the bottle, and the vicinity of one end of the label is pressed. a label fixing arm for pressing against the back surface of the bottle; an air blowing means for separating the other label protruding from the pocket from the circumferential surface of the conveying drum; a guide plate for overlapping the other end of the label on one end of the label while applying the label from the top to the back; a welding means for thermally welding the overlapping label; and a discharge means for discharging the bottle to which the label is welded from the pocket. A wrapping device for film labels.