JPH0523276Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a device for removing a cylindrical label made of a heat-shrinkable film attached to a container.
Necessary when recycling containers.

(Prior art) Conventionally, devices for removing cylindrical labels made of heat-shrinkable film include devices that simply place the label in a heating furnace and incinerate it, and devices that spray hot air from a slit-shaped nozzle that spans the entire width of the label to fuse it. Various devices have been proposed.

However, in an incineration device, the heating energy of the heating furnace is enormous, making it extremely uneconomical as a device for removing cylindrical labels. Furthermore, regarding a device that blows hot air from a slit-shaped nozzle to fuse it, the applicant of the present application has disclosed Japanese Patent Application No. 56-213178 (Japanese Unexamined Patent Publication No. 3-2954).
However, since the slit-shaped nozzle has a large cross-sectional area and a large air volume, the amount of heating heat is also large, so it is desirable to match the shape of the nozzle to the shape of the container. This is a factor in increasing costs, such as the need to replace the parts.

(Problems to be solved by the invention) As mentioned above, in the case of a device that uses a heating furnace or a device that uses hot air from a slit-shaped nozzle, the size of the device and the running cost are also high.
Particularly in the latter case, there are problems with versatility, such as the need to replace the nozzle depending on the type of container.

In order to solve these problems, we propose a cylindrical label removal device that is small, inexpensive, has low running costs, and is easy to handle.

(Means for Solving the Problems) In order to achieve the above-mentioned problems, the cylindrical label removing device of the present invention is provided with a conveyance tray, on which containers with cylindrical labels made of heat-shrinkable film attached are placed upright. The container is connected to an endless conveyor that conveys the container in the vertical direction, and is connected to the shaft of a floating disc, the angle of which can be adjusted, and hot air is blown out while the outer periphery of the disc is in contact with the outer surface of the container being transported in the vertical direction. The present invention is characterized by comprising a hot air jet nozzle for melting and cutting off the cylindrical label attached to the container, and an air nozzle that is provided in an adjustable position and discharging the fused and cut cylindrical label with air.

(Function) In the device of the present application, while the container with the cylindrical label attached is placed upright and conveyed in the vertical direction, the outer periphery of the floating disk is brought into contact with the outer surface of the container, and the hot air jet nozzle is Since more hot air is blown out, the cylindrical label attached to the container is sequentially melted from one of its upper and lower ends.

Since the cylindrical label after being fused is fixed to the container in that state, air is injected from the air nozzle in the next step and it is blown away and discharged.

(Example) The present invention will be explained below based on the illustrated embodiments.

FIG. 1 is a side explanatory view showing the configuration of the device according to the invention, FIG. 2 is a plan view of the device, and FIG. 3 is a perspective view showing the structure of the conveyance tray 3.

The endless conveyor 10 consists of chains 1 and 1 with metal fittings arranged in two rows on the left and right.
Drive sprocket 11, guide sprocket 1
2, 13, 14, and 15, and is driven by a motor 16 via a sprocket 17 and a chain 18 to move at a constant speed in the direction of arrow a.

The chains 1, 1 are provided with metal fittings 27, 27... at predetermined intervals, and the shafts 28, 28... that connect the left and right two rows of metal fittings 27, 27 are provided with four L-shaped arms 5.
The corners of 6, 56... are pivoted, and the same arms 56, 56...
Conveying tray 3 combined with shaft 29 at the lower end of
are provided in a predetermined number. Further, stoppers 60, 60, . . . are provided at appropriate positions on the upper surfaces of the arms 56, 56, .

A guide roll 30 is loosely fitted onto the shaft 29, and the guide roll 30 engages with cams 20, 22, 25, and 26 provided along the movement path of the chain 1.
The posture of the transport tray 3 at each position is controlled.

Specifically, since the endless conveyor 10 moves horizontally between the guide sprockets 12 and 13, the guide roll 30 is guided upward by the cam 20 provided at this position, so that the top surface of the conveyance tray 3 is aligned with the top surface of the table 21. It is guided so as to protrude several millimeters (1 to 3 mm) further, and is guided to protrude by a few millimeters (1 to 3 mm) before the container 57 with the cylindrical label 5 attached to it, which is waiting on the table 21, sinks once under the container 57, and then returns to the table 21. 21, and the container 57 is placed on the transport tray 3.
It is placed upright on top and transported. Table 21 is
As shown in FIG. 2, it is formed into a comb-teeth shape, and the four L-shaped arms 56 of the transport tray 3 mesh with each other.

Guide sprocket 13 and subsequent sprockets 14
Until then, the endless conveyor 10 descends in the vertical direction, but since the guide roll 30 is guided by the cam 22, the conveyance tray 3 places the container 57 upright and descends without changing its posture. . Chain guides 23 and 24 are provided between the sprockets 13 and 14 to regulate the moving path of the chain 1 and to move the chain 1 in a straight line, thereby making the moving path of the cylindrical container 57 constant.

Between the guide sprockets 14 and 15, the endless conveyor 10 moves horizontally again, but the cams 25 and 26
The posture of the conveyor tray 3 is controlled by the container 5.
7 is placed upright and transported.

At a position facing the sprocket 15, the conveyance tray 4 of the endless conveyor 41 for the next process is waiting, and the containers 57 are transferred at the same timing.

Hot air jetting nozzles 8, 8 are provided at appropriate positions within the linear movement range between the sprockets 13, 14, facing the container 57 being conveyed. One side of the nozzle 8 is loosely fitted into the rod 33, and the disk 7 at the tip of the nozzle,
The rod 33 is connected to the shaft 35 of the floating discs 7, 7 with a metal fitting 34 as shown in FIG. 4 so that the angle can be adjusted. One nozzle 8 is provided so that its position relative to the container 57 can be adjusted. The other nozzle 8 is loosely fitted into an L-shaped fitting 31 connected to a rod 33, and its tip can adjust the amount of movement in and out from the outer periphery of the disks 7, 7.

The disks 7, 7 and the nozzles 8, 8 are connected to the container 57.
When the conveyance tray 3 on which is placed upright passes,
It is possible to pass through the gaps between the four L-shaped arms 56, respectively.
Further, the disks 7, 7 are provided so as to be in contact with the container 57, and the nozzles 8, 8 are provided so that their tips are close to the outer surface of the opposing container 57 (with a gap of 1 to 5 mm).

The rod 33 is pivotally fixed to a slider 37 that is fitted onto a ball spline 38, and is adjustable in angle. The slider 37 is biased in one direction by a spring 40 until the discs 7, 7 come into contact with the container 57. The biasing force of the spring 40 acts on an appropriate stopper (not shown) when the container 57 does not pass. The support 39 is a support for the ball spline 38.

As shown in FIG. 1, the endless conveyor 41 includes chains 2, 2 with metal fittings arranged in two rows on the left and right, mounted on a drive sprocket 42 and guide sprockets 43, 44, connected to a motor 16 (not shown), and driven. There is. A predetermined number of metal fittings 48, 48 are provided on the chains 2, 2, and two rows of metal fittings 48, 48 on the left and right are provided.
Three L-shaped arms 5 are connected to the shafts 59, 59... that connect the
The corners of 8, 58... are pivoted, and the same arms 58, 58...
A transport tray 4 is formed by combining a shaft (not shown) with the lower end of the transport tray 4 . A guide roll 49 is loosely fitted on the same axis, and engages with cams 45 and 50 provided along the movement path of the chain 2, so as to change the posture of the conveyance tray 4 at each position so that the containers 57 are upright. Control.

Drive sprocket 42 and guide sprocket 43
In between, the endless conveyor 41 rises in the vertical direction, and chain guides 46 and 47 are provided for regulating the moving path of the chain 2, and the sprocket 42 faces the guide sprocket 15 of the endless conveyor 10. The three L-shaped arms 5 of the transport tray 4 are arranged at the same position and are waiting at the same position.
8, 58... are the four L-shaped arms 5 of the transport tray 3.
6, 56... are arranged so as to mesh with each other, and the container 57 is transferred when they pass opposite each other.

Further, air nozzles 9 for blowing off the fused-cut cylindrical label 6 are arranged at appropriate positions within the linear movement range of the conveyance tray 4, using holders 51, 52, and 53 whose positions can be adjusted. .

Guide sprocket 43 and guide sprocket 44
In between, the endless conveyor 41 moves horizontally, and the guide roll 49 is guided downward by the cam 45 so that the top surface of the conveyor tray 4 is buried several millimeters (2 to 5 mm) below the top surface of the table 54. Then, the container 57 from which the cylindrical label has been removed, which has been placed on the same tray 4 and transported, is transferred onto the table 54. The table 54 is also made in the shape of a comb like the table 21, and the three L's of the tray 4
The mold arms 58 are adapted to mesh.

Next, the container 57 with the cylindrical label made of a heat-shrinkable film, which is supplied to a predetermined position on the table 21 by an appropriate means such as a conveyor or manually, is placed upright on the transport tray 3 of the endless conveyor 10 that moves horizontally. It passes through the guide sprocket 13 and descends in the vertical direction.

During the descent, the container 57 comes into contact with the floating disks 7, 7 provided within the linear movement range, and receives hot air (480°C, 1,
2 kg/cm ² ), and the cylindrical label 5 is sequentially melted from the lower end.

After being lowered, the container 57 passes through the guide sprocket 14 and moves in the horizontal direction with the fused cylindrical label 6 locked therein. Guide sprocket 1
5, the endless conveyor 10 changes direction, but the conveyance tray 4 of the endless conveyor 41 for the next process is waiting at a position opposite to the sprocket 15, and the container 57 is transferred thereto.

The conveyor 41 ascends in the vertical direction between the drive sprocket 42 and the guide sprocket 43, and on the way, air is ejected from air nozzles 9 provided at appropriate locations to remove the melted tubes that are locked to the containers 57. The shaped label 6 is blown away and removed into a suction duct (not shown).

The conveyor 41 finishes removing the fused cylindrical label 6, passes through the guide sprocket 43, moves horizontally, and buries it in the table 54, and places it on the conveyance tray 4. Container 5
7 onto the table 54.

(Effects) The cylindrical label removal device devised in this application uses a small number of nozzles with a small tip diameter as a hot air device, so the amount of air consumed is small and the amount of heat required for heating is also small. The structure of the device is also simplified and miniaturization is possible. It is also possible to change the container size (300 c.c. to 2), which is highly effective industrially.

[Brief explanation of drawings]

FIG. 1 is a side explanatory view showing the configuration of the removing device according to the present invention, FIG. 2 is a plan view of the same device, FIG. 3 is a perspective view of main parts showing the structure of the tray 3, and FIG. 4 is a hot air nozzle 8, FIG. 1... Chain, 3... Tray, 5... Cylindrical label, 8... Hot air nozzle.

Claims (1)

[Utility Model Claims] A cylindrical label removal device comprising: an endless conveyor having a transport tray on which containers with cylindrical labels made of heat-shrinkable film attached are placed upright and which transports the containers in a vertical direction; a hot air blowing nozzle connected to the axis of a floating disk so as to be adjustable in position, which blows out hot air while bringing the outer periphery of the disk into contact with the outer surface of the container transported in the vertical direction, thereby melting and cutting the cylindrical label attached to the container; and an air nozzle which is adjustable in position and uses air to expel the melted and cut off the cylindrical label.