JP2779153B2 - Label removal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a label removing apparatus for removing a label attached to an end face of a drum.

[0002]

2. Description of the Related Art Conventionally, the inside of a drum once used for recycling the drum can is washed, and the outer surface is shot blasted and then repainted. As a result of this processing, the display of the product name and the manufacturer name, which were marked on the drum can with paint or the like, were erased.

[0003]

In recent years, the contents to be displayed have been increased in accordance with the enforcement of the PL law, so that various labels have been attached to drums. However, since the label cannot be completely removed by the above shot blasting process, it is presently relying on humans to reliably remove the label, and the work requires a great deal of man-hours. Therefore, an object of the present invention is to provide a label removing device capable of quickly removing a label stuck on a drum can.

[0004]

In order to solve this problem, the following label removing apparatus has been created. In other words, the invention of claim 1 is a transfer mechanism for transferring a drum in a standing posture, a positioning mechanism for positioning the drum, a drive mechanism for rotating a brush body, and the brush on the end face of the positioned drum. And a feed mechanism for pressing the body and for sending the brush body forward while swinging the brush body right and left.

The above-described label removing apparatus transfers a drum in an upright posture to a predetermined position, presses a rotating brush body against an end face of the drum and sends the drum forward while swinging left and right to scrape a label. Remove.
Therefore, since the drum can is processed in the upright posture, the installation area of the apparatus is relatively small and compact.
Further, the brush body pressed against the end face (label sticking face) of the drum can swings right and left and moves forward while changing the rubbing direction, so that the entire surface of the label can be evenly removed and the label can be efficiently removed.

According to a second aspect of the present invention, in the label removing apparatus according to the first aspect, the positioning mechanism separates the drum can transferred to a predetermined position by the transfer mechanism with respect to a transfer surface of the transfer mechanism. It is characterized in that it has a lifting mechanism for bringing it into contact, and a rotating mechanism for rotating the drum can separated from the transfer surface about a vertical axis to position the mouthpiece of the drum can.

In the above-described label removing apparatus, when the drum can is transferred to a predetermined position, the drum can is separated from the conveyor transfer surface, rotated around the vertical axis, and positioned so that the base is at the predetermined position. That is, since the position of the base of the drum can is constant, the base can be easily avoided when the brush body is applied to the end face of the drum can, and the feed mechanism of the brush body can be configured relatively simply.

[0008] The invention according to claim 3 is the invention according to claim 1 or 2.
In the label removing device described above, the brush body is characterized in that a plurality of disc-shaped wire brushes that are in contact with the end surface of the drum can substantially perpendicularly are arranged at a predetermined interval on a single axis.

[0009] With the above-mentioned brush, the removed label fragments are easily separated from the wire brush through the gap between the adjacent wire brushes. In addition, a curved portion of the wire formed by being pressed against the drum can can escape to the above-mentioned gap, and therefore, the tip of the wire brush can easily follow irregularities on the end face of the drum can.

[0010]

According to the present invention, a large number of drums can be continuously processed by a relatively compact label removing device capable of efficiently removing labels, thereby reducing the cost of recycling drums. Has the effect of contributing to

[0011]

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. 1 is a partially cutaway front view of the label removing apparatus, FIG. 2 is a partially cutaway right side view of the same apparatus, FIG. 3 is a plan view of the same apparatus, and FIG. 4 is a sectional view taken along line AA of FIG. However, FIG. 2 shows a state in which the drum can is lifted. The label removing device shown in FIGS.
It comprises a drum can transfer mechanism, a drum can positioning mechanism, a wire brush drive mechanism and a feed mechanism, and a dust collecting mechanism. Hereinafter, description will be made in order.

Two rails 2 on which a drum can D is placed and slid are laid horizontally below a frame 1 framed by a shaped steel or the like, and intersect with the rails 2 below the rails 2. A rotating shaft 3 is provided, and a chain 4 is hung on a sprocket 3a substantially at the center of the rotating shaft 3. A traction tool, specifically a hook 4a, is attached to a chain 4 extending parallel to the rail 2 at a projecting edge of the bottom of the drum can, and the chain 4 is driven by a drive motor 5 via gears 3b and 5a. By doing so, the drum D is pulled by the hook 4a and moves forward (to the left in FIG. 1, the same applies hereinafter). In addition, 2a in FIG. 2 is a column for fixing the rail 2 to the lower frame 1a of the frame 1, and 3c in FIG. In FIG. 1, reference numeral 6 denotes a photo switch connected to a control device (not shown) for detecting the drum D. The photo switch 6 turns on / off the drive motor 5 depending on the presence or absence of the drum D to drive the chain 4 intermittently. The drum D is transported to a predetermined position and stopped. The above is the transfer mechanism referred to in the present invention.

Next, the positioning mechanism will be described. Support shaft 8 supported by bearing 8a attached to lower frame 1a
b, 8c, the base end of the link 9a is fixed, and the link 9a
A lift member 10 extending along the rail 2 is attached to the distal end of the base via a connecting pin 9b. One end of a link 9c is rotatably connected to the shaft end of the support shaft 8c, and the other end of the link 9c is connected to the tip of a rod of an air cylinder 11. When the air cylinder 11 operates, the lift member 10 moves up and down. Is to be displaced. The lift member 10 is formed long in the front-rear direction so that the two drums D can be lifted at the same time. However, the drum D located at the rear is lifted via the receiving member 12 described below. The lifting mechanism according to the present invention is configured as described above.

The receiving member 12 is attached to the lift member 10 so as to be rotatable about the longitudinal axis, and is disposed so as to be able to abut at four positions at the lower end portion of the drum D, and is hung on the rotating portion of the receiving member 12. Chain 13, sprocket 14, and drive motor 15
Are driven to rotate in the same direction. In FIG. 4, 12a
Is a tension portion for adjusting the tension of the chain 13. Then, as shown in FIG. 5, when the lift member 10 is at the lift-up position, the receiving member 12 comes into contact with and lifts the drum D, and the drum D is rotated about the vertical axis in the standing posture. It has become. The rotation mechanism according to the present invention is configured as described above.

On the other hand, a stopper 17 is mounted on the lower surface of the partition plate 16 at an intermediate height position of the frame 1 so as to be rotatable about a horizontal axis, and a stopper D of the rotating drum D is provided.
When the a contacts the stopper 17, the rotation of the drum D is stopped. In the present embodiment, the drive motor 15 does not stop even if the base Da contacts the stopper 17, and the rotating receiving member 12 slides on the drum D, giving priority to simplification of the control device. However, when the stopper 17 is provided with a sensor or a switch to position the drum D in the rotational direction, the motor 1
5 may be stopped. The positioning mechanism is configured as described above.

Next, the drive mechanism and the feed mechanism of the brush body will be described mainly with reference to FIGS. At the upper part of the frame 1, two guide rails 20 are provided extending parallel to the rails 2, as shown in FIG. 1. As described above, a plurality of wheels 22 are provided. A sprocket 24 for hanging an endless chain 23 extending in the front-rear direction and a drive motor 25 for driving the chain 23 via a sprocket 25a are attached to the side of the frame 1. The joining member 23a is connected to the vertical base 21 of the movable frame 21.
B engages with a long hole of the engaging portion 21c provided in the b. Therefore, when the chain 23 is driven by the drive motor 25, the movable frame 21 can be repeatedly driven forward and backward along the guide rail 20 by following the engagement member 23a.

A bearing 26 attached to the movable frame 21 supports a support 27 so as to be rotatable about a vertical axis. A support arm 27a extends obliquely upward from above the support 27, and a support portion is provided at the tip. 27b while the support 27
A bearing 28 attached to a lower portion of the base 30 supports a base 30 via a horizontal support shaft 29 so as to be rotatable around a horizontal axis. At the front end of the base 30, a main shaft 32 is supported by a bearing 31 and extends in the horizontal direction.
However, a pulley 33 is attached to the other end, and the pulley 33 is connected to a drive motor 35 via a belt 34.

A tension spring 36 and an air cylinder 37 are provided between the vertically moving tip of the base 30 and the support portion 27b.
The pressing force of the brush body due to its own weight of the base 30 and the like is appropriately adjusted by the spring 36. The air cylinder 37 is always in a free state, and the brush body 40
Is activated only when it is separated from the upper end surface of the drum can, and the tip of the base 30 is pulled up to the state shown by the solid line in FIG.

The horizontal base 2 of the movable frame 21
The motor 38 for oscillating is attached to the mounting plate 21d provided in
The eccentric position of the rotary plate 38a at the shaft end of the motor 38 and the upper end of the support portion 27b are connected by a link 39. Therefore, when the motor 38 rotates, as shown in FIG.
7. The base 30, the brush body 40 and the like swing integrally left and right.

Next, the brush body 40 will be described. The brush body 40 is a rotary brush mainly formed of a wire extending radially with respect to the main shaft 32. A plurality of disc (disk) brushes 40a are arranged at a predetermined interval on a single shaft as shown in FIG. It was done.

As shown in FIG. 1, an openable dustproof cover 45 is provided on the upper portion of the frame 1 so as to cover the brush driving mechanism and the feed mechanism. A chamber is formed. Although not shown, the ventilation port 46 of the dustproof cover 45 communicates with the dust collector via a duct or the like to form a dust collection mechanism. Further, a carry-in conveyor 50 and a carry-out conveyor 51 are provided at front and rear positions of the label removing device.

Next, the function and effect of the label removing device will be described. As described in detail below, the above-described label removing device includes a drum D that is sequentially fed from the carry-in conveyor 50.
The step of positioning the base Da and the step of applying the brush body 40 to the drum D that has been positioned earlier than the above step are simultaneously performed.

The drum D to be processed is erected with the die Da facing upward, and is intermittently fed into the label removing device via the conveyor 50. Then, the chain 4 driven by the drive motor 5 pulls the drum D with the hook 4a and moves on the rail 2. At the same time, when the preceding drum D is present, the other hook 4a of the chain 4 transfers the die whose positioning has been completed to the next label removing step, and transports the finished label removing processing to the unloading step. To the conveyor 51. The photo switch 6 detects that the drum D has moved forward by one step, and the drive motor 5 stops.

When the drum D stops at a predetermined position, the air cylinder 11 operates and the lift member 10 moves up. In the positioning step, the receiver 12 lifts the drum D and rotates the drum D at the same time. And the drum D is the base D
a contacts the stopper 17 to stop the rotation.

On the other hand, in the above label removing step,
The lift member 10 lifts the drum D transferred after the positioning of the base Da, and the drive motor 35
The upper end surface of the drum can is pressed against the brush body 40 rotated and driven by the above. The initial position of the brush body 40 at this time is shown in FIG. Subsequently, the drive motor 25 drives the chain 23 to move the movable frame 21 forward, and at the same time, the oscillating motor 38 rotates the link 39 to move the brush body 40 together with the base 30 right and left with respect to the traveling direction. Rock it. The movable range of the brush body 40 at this time is
As shown in FIG. 11A, large and small bases Da,
The label can be effectively peeled off by moving between Db. The oscillating fulcrum is the center of rotation of the support 27, that is, the center axis connecting the upper and lower bearings 26.

By the way, when the brush body 40 is pressed against the upper end surface of the drum D, the wire bends, but the wire pressed excessively swells into the gap between the adjacent brushes 40a and easily escapes. In addition, the pieces of the label that are rotated and scraped off are easily released from the gap between the brushes 40a. At this time, the label fragments scraped off are collected by a dust collector through a vent or the like from a vent 46 of the dustproof cover 45.

When the brush body 40 has advanced to the position shown in FIG. 11 and label removal has been completed, the air cylinder 37 is actuated to lift and brush the brush body 40 together with the base 30, and the chain 4 is removed. The drum D is driven to transfer one step at a time. And the base Da
When the drum having been positioned is transferred to the label removing step, the air cylinder 37 is set in a free state, and the brush body 40 together with the base 30 is lowered. This time, FIG.
Since the position shown in (b) begins to be cut, the brush body 40
The brush body 40 together with the movable frame 21 while swinging
Retreat. However, since the brush body 40 is preferably rotated so as to oppose the traveling direction, the drive motor 35 and the brush body 40 are rotated counterclockwise in the direction opposite to the arrow in FIG. 11B. In addition, you may reciprocate the brush body 40 back and forth with respect to one drum D as needed.

As described above, the present label removing apparatus presses the rotating brush against the upper end face of the drum can which stands with the base facing upward, and quickly peels off the label stuck thereon. A large number of drums can be processed continuously and at high speed.

The present label removing apparatus can be used not only for removing drums but also for removing substances adhered or adhered to cylindrical containers or pillars. In addition, it goes without saying that the present invention can be implemented in various modified forms based on the knowledge of those skilled in the art in addition to the above-described embodiments.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a label removing device according to an embodiment of the present invention.

FIG. 2 is a partially cutaway right side view of the label removing device, showing a state in which a drum can is lifted.

FIG. 3 is a plan view of the label removing device.

FIG. 4 is a sectional view taken along line AA of FIG. 1;

FIG. 5 is a sectional view taken along line BB of FIG. 2, showing a state in which the drum can is lifted.

FIG. 6 is a front view of a driving mechanism and a feed mechanism of the brush body.

FIG. 7 is a left side view of a drive mechanism and a feed mechanism of the brush body.

FIG. 8 is a plan view of a drive mechanism and a feed mechanism of the brush body.

FIG. 9 is a view for explaining swing of a brush body.

10A and 10B are diagrams for explaining the start of label cutting, and FIG.
Fig. 4 shows a state in which the drum can is viewed from above, and Fig. 4B shows a state in which the drum is viewed from the side.

FIG. 11 is a diagram illustrating a state in which the label has been removed.

[Explanation of symbols]

 Reference Signs List 1 frame 2 rail 4 chain 4a hook (traction device) 5 drive motor 9a, 9c link 10 lift member 11 air cylinder 12 receiving device 13 chain 15 drive motor 20 guide rail 21 movable frame 27 support 27a support arm 30 base 35 drive Motor 38 Motor for oscillating 39 Link 40 Brush body

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-50-95135 (JP, A) JP-A-2-86885 (JP, A) JP-A-59-37185 (JP, A) 7189 (JP, B1) JP-B 38-1791 (JP, B1) JP-B 60-20277 (JP, B2) JP-B 4-6436 (JP, B2) Jiko 56-51989 (JP, Y2) (58) Field surveyed (Int. Cl. ⁶ , DB name) B08B 1/00-11/04

Claims (3)

(57) [Claims] 1. A transfer mechanism for transferring a drum in a standing posture, a positioning mechanism for positioning the drum, a drive mechanism for rotating a brush, and pressing the brush against the positioned end face of the drum. A label removing device including a feed mechanism for feeding the brush body forward while swinging the brush body left and right. 2. The positioning mechanism according to claim 1, wherein the positioning mechanism is configured to lift and lower the drum transferred to a predetermined position by the transfer mechanism with respect to a transfer surface of the transfer mechanism, and the drum can be separated from the transfer surface. 2. The label removing apparatus according to claim 1, further comprising: a rotating mechanism that rotates the drum around a vertical axis to position the die. 3. The label removing device according to claim 1, wherein the brush body comprises a plurality of disc-shaped wire brushes which are in contact with the end surface of the drum can substantially perpendicularly and are arranged at a predetermined interval on a single axis. apparatus.