JP3504484B2 - Method for recovering lid temporarily attached to mouth of container - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recovering a lid temporarily attached to the mouth of a container, and particularly, for example, oil,
Drums for storing kerosene and other raw materials
Mouth of a container that is temporarily attached to the mouth of various containers for packaging foods, pharmaceuticals, cosmetics, etc., and temporarily removes the label-like lid that closes the mouth of the container and collects The present invention relates to a method for recovering a lid temporarily attached to a part.

[0002]

2. Description of the Related Art The prior art as the background of the present invention is disclosed in, for example, Japanese Patent Publication No. 6-555. Tokufair 6
Japanese Patent Publication No. 555-55 discloses a "temporary lid collection method" in which a label-like temporary lid having an adhesive surface that is temporarily attached to the mouth of a drum can is removed and collected by a suction method. In this conventional technique, a suction cup having a large number of small holes connected to a vacuum pump through a suction valve solenoid valve sucks and removes a temporary lid attached to the mouth of a drum can, and then,
The temporary lid is collected by a temporary lid suction device which is arranged at a distance from the suction cup. The temporary lid suction device includes a diffuser having a nozzle, and the nozzle is connected to an air compressor via a temporary lid suction device electromagnetic valve.

In this prior art, first, a temporary lid temporarily attached to the mouth of the drum can is sucked by a suction cup, and the temporary lid is removed from the mouth of the drum. Next, by closing the solenoid valve for the suction cup to stop the suction action of the suction cup, the temporary lid sucked by the suction cup is dropped directly below, and then the fallen temporary lid is sucked by the temporary lid suction device to suck the temporary lid. It is to be collected in the collection basket. Further, in this conventional technique, when the temporary lid sucked by the suction cup does not drop from the suction cup, the temporary lid is forcibly dropped by sending air into the suction cup.

[0004]

However, in the conventional method of recovering the temporary lid, a method of recovering the temporary lid sucked by the suction cup is first dropped from the suction cup, and then further sucked by the temporary lid suction device. Since it is used, if the solenoid valve for the temporary lid suction device does not work well, the temporary lid that has fallen from the suction cup may not be collected in the temporary lid collection basket, but may fall on the ground and be scattered.

Further, according to the above-mentioned conventional technique, when the temporary lid does not fall well from the suction cup, air is sent into the suction cup to forcefully drop the temporary lid.
When the pressure of the air sent into the suction cup is larger than the suction force of the temporary lid suction device, the temporary lid is not sucked into the temporary lid suction device successfully, so the temporary lid cannot be collected in the temporary basket and the temporary lid is scattered on the ground. There was a fear that In these cases, if the temporary lid is scattered on the ground, an adhesive surface is formed on the back surface of the temporary lid, so the temporary lid is attached to other articles or the floor surface and cleaned after cleaning the temporary lid. However, it is uneconomical because of unnecessary work costs.

Further, in the method of collecting temporary lids according to the prior art, the temporary lids attached to the two large and small mouths of the drum can are sucked by suction cups, and then the temporary lids are dropped one by one from each suction cup. Because the temporary lid suction device collects the individual pieces one by one, even if the temporary lids are successfully collected from the suction cups into the temporary lid collection basket, the temporary lids are scattered on the wall surface inside the basket. I will stick it. for that reason,
It cannot be said that there is a risk that it will take time to dispose of the temporary lids that have been collected in the temporary lid recovery basket, and that a series of work processes will be hindered.

Therefore, a main object of the present invention is to make it possible to reliably and economically recover the lid temporarily attached to the mouth of the container, and to attach the lid temporarily attached to the mouth of the container. It is to provide a method of recovering the body.

[0008]

SUMMARY OF THE INVENTION A method of recovering a lid temporarily attached to the mouth of a container according to the present invention is a method of temporarily attaching the lid to the mouth of a container in a series of working steps in which a large number of containers are continuously handled. A method of recovering a label-like lid body having a pressure-sensitive adhesive layer which is easily peeled off from the mouth portion of the container by removing the lid body from the mouth portion of the container, and a mouth portion of the container. Including a recovery step of recovering the lid removed from the temporary attachment to the holder by the pressure-sensitive adhesive layer of the lid,
This is a method of collecting the lid temporarily attached to the mouth of the container. The holding body may include a circulating endless annular discharge passage. The holding body may include a discharge path that is arranged to be movable up and down. The lid body is more effectively collected when it is temporarily attached so as to be stacked on the holding body. The removing step may include a step of removing the lid body from the mouth of the container by the suction means. A recovery device for recovering a lid temporarily attached to the mouth of a container according to the present invention is a pressure-sensitive adhesive layer temporarily attached to the mouth of a container in a series of work steps for continuously handling a large number of containers. A device for collecting a lid body temporarily attached to the mouth portion of the container for removing and collecting a label-like lid body that is easily peeled from the mouth portion of the container, the lid being temporarily attached to the mouth portion of the container. A transport means for continuously transporting a large number of containers from the upstream side to the downstream side on the transport path in a vertical posture so that the surface of the body faces upward, and the transport means is disposed above the transport device, and the lid body is temporarily attached. Positioning means for positioning the mouth of the container at a predetermined position, removal means arranged downstream of the positioning means and above the mouth of the container, for removing the lid from the mouth of the container, and removed from the mouth of the container Remove the cover from the transport path and temporarily attach it to the discharge path located away from the transport path. And a temporary destination unit, a recovery system temporarily attached to the lid to the mouth of the container.

In the method of recovering the lid temporarily attached to the mouth of the container according to the present invention, the lid is removed from the mouth of the container in the removing step. Further, the lid removed from the mouth of the container by the collecting step is temporarily attached to the holder with the pressure-sensitive adhesive layer of the lid. That is, compared with a conventional collection method of collecting a lid body that has been dropped from the suction cup or forcedly dropped by a suction device or the like, in the collection method of the lid body temporarily attached to the mouth of the container according to the present invention, The pressure-sensitive adhesive layer of the lid allows the lid removed from the mouth of the container to be temporarily attached to the holder and recovered. Therefore, unlike the conventional method of collecting a temporary lid, the temporary lid does not fall and is not scattered on the ground without being collected. Furthermore, when the lids are temporarily attached so as to be stacked on the holding body, a plurality of lids removed from the mouth of the container are collectively collected, as compared with the conventional technique of individually collecting the lids one by one. Therefore, the lid can be effectively and economically recovered. Further, in the recovery device for recovering the lid temporarily attached to the mouth of the container according to the present invention, the transporting means transports the multiple containers in a vertical posture in a series of work steps for continuously handling the multiple containers. It is continuously transported from the upstream side to the downstream side on the road. In this case, a label-like lid having a pressure-sensitive adhesive layer is temporarily attached to the mouth of the container, and the surface of the lid temporarily attached to the mouth of the container is turned upward by the conveying means. To be transported. The mouth of the container to which the lid is temporarily attached is positioned at a predetermined position by the positioning means. The lid is removed from the mouth of the container by the removing means. The temporary attachment means detaches the lid body removed from the mouth of the container from the transport path. Further, the lid body removed from the mouth of the container by the temporary attachment means is temporarily attached to the road surface of the discharge path located away from the transport path.

The above-mentioned objects, other objects, features and advantages of the present invention will be more apparent from the following detailed description of the embodiments of the invention with reference to the drawings.

[0011]

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 is a rear view showing a label-like lid body that is removed and collected by the method for collecting a lid body temporarily attached to the mouth of a container according to the present invention, and FIG. Line II
It is a sectional view in -II. FIG. 3 is a sectional view of essential parts showing a state in which the lid body shown in FIGS. 1 and 2 is temporarily attached to the mouth portion of the drum can. FIG. 4 is a plan view showing an example of a lid automatic collection device used to carry out the method for collecting the lid temporarily attached to the mouth of the container according to the present invention.
FIG. 5 is a front view solution diagram thereof. 6 is a schematic view of the lid automatic recovery device of FIG. 5 as seen from the direction of arrow VI, and FIG. 7 is a schematic view of the lid automatic collection device of FIG. 5 as seen from the direction of arrow VII. is there. In this example, as an example of a method of collecting the lid temporarily attached to the mouth of the container according to the present invention,
For example, a recovery method will be described in which the label-like lids temporarily attached to the large and small mouths of the drum can before the drum can painting process are removed and collected by the automatic lid-collecting device after the drum can painting process.

First, the label-like lid 10 which is collected by the method of collecting the lid temporarily attached to the mouth of the container according to the present invention will be described. A label-shaped lid 1 that is removed and collected by the lid automatic collection device 20 of the present embodiment.
0 includes a circular base material 12 made of, for example, a synthetic resin material. The pressure-sensitive adhesive layer 14 is formed on the entire back surface of the base material 12.
Is formed. The pressure-sensitive adhesive layer 14 is formed by applying a pressure-sensitive adhesive on the entire back surface of the base material 12 and drying it. An adhesive strength weakening layer 16 that weakens the adhesive strength of the pressure-sensitive adhesive layer 14 is formed on a part of the surface of the pressure-sensitive adhesive layer 14.
It is formed like a half moon when viewed as a whole. Adhesion weakening layer 16
Reaches the outer peripheral edge of the base material 12 and is formed with an area of about one third of the entire back surface of the base material 12.

In this case, one straight line is formed at the boundary between the portion where the adhesion weakening layer 16 is formed and the portion where the adhesion weakening layer 16 is not formed. Further, when the adhesion weakening layer 16 is viewed macroscopically, as shown in an enlarged view in a portion surrounded by a circle by a dashed line in FIG.
The dot-like adhesion weakening layers 16 are scattered at appropriate intervals to form a polka dot pattern. The adhesion weakening layer 16 is a paint,
It is made of printing ink, synthetic resin material, or the like.

In the lid 10 to be removed and collected in this embodiment, for example, a transparent varnish is applied to a predetermined portion of the surface of the pressure-sensitive adhesive layer 14 by a method such as a screen printing method and dried to bond the varnish. The weakening layer 16 is formed. The ratio of the mesh (mesh) by the screen printing method is, for example, 50% mesh, 60% mesh or the like.

Since the adhesive strength weakening layer 16 is formed by the screen printing method in the lid 10 removed and collected in this embodiment, the adhesive strength can be changed by appropriately changing the number and shape of meshes in the screen printing. The coarse density of the weakened layer 16 can be adjusted. Therefore, in the lid 10 removed and collected in this embodiment, the adhesive force of the adhesive weakening layer 16, that is, the peeling force can be controlled. That is, in the lid 10 removed and collected by the lid automatic collection device 20 of this embodiment, when the lid 10 is temporarily attached to the peripheral edges of the two large and small mouths A and B of the drum can W as shown in FIG. It is possible to appropriately adjust the initial adhesive force and the temporary attachment time of the.

Further, the lid body 1 removed and collected in this embodiment.
In 0, by changing the print pattern of the adhesive strength weakening layer 16, the portion where the adhesive strength weakening layer 16 is formed (the portion corresponding to the right side in FIG. 1) and the adhesive strength weakening layer 16 are formed. Since it is possible to adjust the formation position, the formation ratio, and the like with the unopened portion (the pressure-sensitive adhesive layer 14 portion corresponding to the left side portion in FIG. 1), the shapes of the mouth portions A and B of the drum can W, They can be changed appropriately according to the size.

Next, the automatic lid-collecting apparatus 20 of this embodiment used for carrying out the method of collecting the lid temporarily attached to the mouth of the container according to the present invention will be described. The lid automatic collection device 20 is roughly divided into three parts: a mouth positioning station 22, a lid collection station 24, and a lid collection defective product discharge station 26. The automatic lid recovery device 20 is composed of the three stations 22 and 2 described above.
It includes a housing 28 which encloses each mechanism in 4, 26. The housing 28 is the mouth positioning station 2
2. It has a plurality of frames 30 surrounding various mechanical devices and the like included in the lid body collection station 24 and the lid body collection defective product discharge station 26. On the lower side of the housing 28, there is arranged a conveying means 32 including a conveyor system including a chain conveyor 32a. By this carrying means 32, a large number of drum cans W are continuously carried such that the surfaces of the label-like lids 10A and 10B temporarily attached to the two large and small mouths A and B of the drum cans W face up. . For example, as shown in FIGS. 4 and 5, the drum can W is conveyed from the right side (upstream side) to the left side (downstream side) on the chain conveyor 32a so as to pass through the stations 22, 24, 26 in that order. To go.

Below the mouth locating station 22 are shown in FIGS. 4, 8, 10, 11, 12, and 13.
As shown in, as a support member for supporting the drum W,
For example, three support rollers 34, 36, 38 are arranged. The three support rollers 34, 36, 38 are arranged on the outer side in the width direction of the chain conveyor 32a at intervals in a generally triangular shape in a plan view. One support roller 34 is rotatably formed by a roller driving unit 40 including a motor 40a with a brake and a speed reducer (not shown).
The other two support rollers 36, 38 are formed as free rollers. The bottom surface of the drum can W can be supported at three points by the three support rollers 34, 36, and 38. The three support rollers 34, 36, 38 are used for the lifter 4
2, it is arranged so that it can be raised and lowered. The three support rollers 34, 36, 38 are fixed by bracket members 46 on an attachment plate 44 of, for example, an inverted T shape, as shown in FIGS. Mounting plate 44
When the lifter 42 is actuated, is displaced up and down together with the three support rollers 34, 36, 38.

Further, below the mouth positioning station 22, FIGS. 4, 5, 8, 9, 12 and 1 are shown.
As shown in FIG. 3 and the like, two stopper rods 48, 48 are arranged at intervals in the width direction. The two stopper rods 48, 48 are formed to be vertically movable by cylinders 50, 50 arranged on the inner surface of the chain conveyor 32a in the width direction. Two stopper rods 48, 48
Is always stopped at the elevated position,
The lifters 42 are controlled to descend when they rise.

Further, as shown in FIGS. 5, 6, 10 and 15, a rotation assisting member 52 including a pressing roller 52a made of an elastic material or the like is disposed above the mouth positioning station 22. It The rotation assisting member 52 is disposed above the supporting roller 34 and assists the rotation of the drum can W. In this embodiment, the drum can W
Rotates clockwise when viewed in a plan view, for example. The rotation assisting member 52 rotates the one support roller 34 after the lifter 42 is lifted, and cooperates with the other two support rollers 36 and 38 to rotate the drum can W. It has a function to stabilize the initial rotation of the. In other words, the rotation assisting member 52 is
It has a function of preventing slippage of the drum can W during initial rotation. The pressing roller 5 of the rotation assisting member 52
2a is controlled so as to immediately rise when the drum can W rotates.

A positioning stopper 53 is provided above the mouth positioning station 22 as shown in FIGS. 4, 5 and 11. When the drum can W is rotated, the positioning stopper 53 is arranged at a predetermined position substantially above the rotation path of the larger mouth portion A of the drum can W in plan view. Positioning stopper 5
3 includes a vertically movable stopper rod 53a, and the stopper rod 53a is vertically movable by the action of the cylinder 53b. In this embodiment, the positioning rod 53a is constantly raised, but when the rotation of the drum W is stopped, the stopper rod 53a is lowered. In this case, since the stopper rod 53a descends on the rotation path of the larger mouth portion A of the drum can W, the stopper rod 53a hits the peripheral edge of the mouth portion A, and at the same time, the rotation of the drum can W stops. That is, when the stopper rod 53a hits the mouthpiece A, the positioning of the drum can W is completed.

Further, above the mouth positioning station 22, the drum can W is installed at the mouth positioning station 22.
As a sensor for detecting that it has been conveyed inside, for example, a transmission type photoelectric sensor 54 having a light projector 54a and a light receiver 54b is arranged. In this photoelectric sensor 54, in particular, as shown in FIG. 4, one frame 30 in which the projector 54 a extends in the length direction of the upper portion of the housing 28.
And the light receiver 54b is arranged on the other frame 30 so as to face the light projector 54a. The photoelectric sensor 54 operates when the drum can W is conveyed to the optical path between the light projector 54a and the light receiver 54b and the optical path is blocked. When the photoelectric sensor 54 is not operating, that is, when the drum can W is not conveyed to the optical path between the light projector 54a and the light receiver 54b, the two stopper rods 48, 48 are raised.

Further, on the upper side of the mouth positioning station 22, in particular, as shown in FIG. 5, the mouthpiece portion of the smaller mouth B of the drum can W conveyed into the mouth positioning station 22 is detected. For example, a proximity switch 56 is provided as a sensor for this. The proximity switch 56 positions the smaller mouth portion B of the drum can W at a predetermined position, that is, in the vicinity of the upper end of the mouthpiece of the smaller mouth portion B of the drum can W. Is installed in.

In the automatic lid recovering apparatus 20 of this embodiment, by detecting the mouthpiece portion of the smaller mouth portion B of the drum can W, the two large and small mouth portions A and B of the drum can W are automatically detected.
Is to be positioned. Normally, the distance from the center line of the drum can W to the center line of the larger mouth portion A and the distance from the center line of the drum can W to the center line of the smaller mouth portion B are different. In this case, the distance from the center line of the drum can W to the center line of the smaller mouth B is the drum can W
Is longer than the distance from the center line of the mouth part A to the center line of the larger mouth part A. In consideration of this, in the automatic lid recovery device 20 of the present embodiment, the proximity switch 56 is arranged near the upper portion of the mouthpiece B of the smaller mouth B of the drum can W.

In the proximity switch 56 applied to this embodiment, the proximity switch 56 detects the change in the electric field or the magnetic field when the upper end of the mouthpiece of the smaller mouth B of the drum can W approaches below the proximity switch 56. Operate. In the lid automatic recovery device 20 of the present embodiment, the drum can W is rotated while the proximity switch 56 is not operating, and when the proximity switch 56 is activated, that is, the smaller drum can W is below the proximity switch 56. When the mouthpiece portion of the mouth B is positioned, the rotation of the drum can W is stopped and the smaller mouth B of the drum can W is automatically positioned. As a result, the mouth portions A and B of the drum can W are positioned in the mouth portion positioning station 22.

A lid removing device 60 is arranged above the lid collecting station 24 as shown in FIGS. The lid removing device 60 includes two large and small lid removing heads 62A and 62B. The lid removing heads 62A and 62B remove the lids 10A and 10B temporarily attached to the large and small openings A and B of the drum can W, and remove the removed lids 10A and 10B from the pressure-sensitive adhesive layer 1
It is temporarily attached to a holding body 92 described later with 4. The lid removal heads 62A and 62B are particularly shown in FIG.
As shown in FIG. 5, the movable member is displaceably arranged at a position separated from the chain conveyor 32a, which is a conveying path. In the present embodiment, the lid removing heads 62A and 62B are provided with a holding member 92 arranged at intervals in the width direction of the chain conveyor 32a.
Is disposed above.

The lid removing heads 62A and 62B are vertically movable by elevating cylinders 64A and 64B, respectively, and are movable forward and backward by a discharge cylinder 66. The lid removing heads 62A and 62B are mechanically and electrically connected to a suction / adsorption device including a vacuum pump, an electromagnetic control valve, an air compressor, and the like, and are temporarily attached to the large and small openings A and B of the drum can W. Labeled lids 10A, 10
B can be removed by suction / adsorption. In this case, the lid removing head 62A is
The lid removing head 62B sucks and adsorbs the lid 10A that is temporarily attached to the mouth A of the drum can W. It will be adsorbed.

Since the lid removing heads 62A and 62B have the same structure, one lid removing head 62A will be described. The lid removing head 62A includes a suction holding plate 68a having a large number of suction holes (not shown) on its lower surface. The suction holding plate 68a is attached to the lower end of the rod 64a of the lifting cylinder 64A. Similarly, the lid removing head 62B includes a suction holding plate 68b, and the suction holding plate 6b.
8b is attached to the lower end of the lifting cylinder 64B. The two lifting cylinders 64A and 64B are supported by bracket plates 70a and 70b, respectively. The bracket plates 70a and 70b are supported by the connection support member 72 in the transport direction of the transport path of the drum can W, that is, in parallel with the chain conveyor 32a and spaced from each other.

Further, two guide post portions 74A and 74B are arranged above the cover collecting station 24 in a direction orthogonal to the chain conveyor 32a. Two
The two guide post portions 74A and 74B are connected to the drum can W
Are arranged at a predetermined interval in the carrying direction. Each of the guide post portions 74A and 74B has one axial end supported by the bracket bearings 76A and 76B, and the other axial end supported by the bracket bearings 78A and 78B, respectively. Bracket bearing 76
In particular, as shown in FIGS. 13 and 15, A and 76B are attached to the frame 3 on one side in the width direction of the housing 28 by the attachment brackets 80A and 80B, respectively.
Bracket bearings 78A and 78B
Are attached to the frame 3 on the other side of the housing 28 in the width direction by the attachment brackets 82A and 82B.
It is attached to 0.

The guide post portions 74A and 74B are also provided.
Sliding bearing portions 84A and 84B are respectively arranged at intermediate portions in the axial direction of. Sliding bearing portions 84A and 84
B is slidably displaced on the axes of the guide post portions 74A and 74B, respectively. The sliding bearing portions 84A and 84B are respectively attached to the bracket plates 86A and 86B.
Therefore, the connection support member 72 is attached at a predetermined interval in the length direction.

Further, the tip end portion of the rod 67 of the discharge cylinder 66 is connected to the central portion of the connecting and supporting member 72 in the lengthwise direction through a joint portion 88. Discharge cylinder 66
Is fixed to the upper frame 30 of the housing 28, in particular by a mounting bracket member 90 including a flange 90a, a bracket 90b and the like. By operating the discharge cylinder 66, the rod 67 is displaced so that it can move back and forth. In the present embodiment, the sill rod 67 of the discharge cylinder 66 is displaced in the conveying direction of the drum W, that is, the direction orthogonal to the length direction of the chain conveyor 32a, as seen in FIGS.

Therefore, in this embodiment, when the rod 67 is displaced by the discharge cylinder 66, the sliding bearing portions 84A and 84B slide together with the coupling support member 72 along the guide post portions 74A and 74B when the rod 67 is displaced. Displaces freely. In this case, the suction holding plates 68a and 68b, which move up and down by the lifting cylinders 64A and 64B, respectively, are always, that is, the rod 6 of the discharge cylinder 66.
When 7 is not extended, the lid collection station 2
Mouth A and Mouth B of the drum can W conveyed in
Is located above. Further, when the rod 67 of the discharge cylinder 66 extends, the suction holding plate 68a
And 68b are disengaged from the conveyance path of the drum can W as shown in FIGS. 4, 5, 6, 16 and 17, for example. In this case, the rod 67 of the discharge cylinder 66 is
It is arranged above the holding body 92 arranged at a position apart from the chain conveyor 32a.

The holder 92 is composed of a belt conveyor 94 made by circulating an endless annular belt 94a, for example. That is, the belt conveyor 94 includes, for example, two drums 98 and 99 provided at both ends of the frame 96. Between the two drums 98 and 99, a belt 94a as a discharge path is spanned endlessly. Belt 9
4a is endlessly rotationally driven by, for example, a motor M. Further, the belt conveyor 94 has a belt 94.
The discharge bar 100 is attached to the frame 96 by a bracket plate (not shown) or the like so as to project onto the transfer path of a. In the discharge bar 100, the lids 10A and 10B temporarily attached and transferred onto the surface of the belt 94a are disposed below the discharge container 1.
01 is to be discharged.

In the lid automatic recovery device 20 of this embodiment, the suction holding plates 68a, 68 of the lid removing heads 62A, 62B are used.
The lids 10A and 10B sucked and held by b are temporarily attached to the surface of the belt 94a of the belt conveyor 94 so that the belt conveyor 94 operates when a predetermined amount of the lids 10A and 10B are stacked. , Controlled. That is, in the lid automatic recovery device 20 of the present embodiment, the belt conveyor 94 is normally stopped, but when the predetermined amount of the lids 10A and 10B are laminated and temporarily attached to the surface of the belt 94a, the motor M is stopped. Is driven, and the belt 94a is circulated.

The lids 10A and 10B removed by the lid removing heads 62A and 62B described above are temporarily attached to the surface of the belt 94a of the belt conveyor 94. That is, the operation of the discharge cylinder 66 causes the discharge cylinder 66 to operate.
Rod 67 extends to above belt conveyor 94. Further, the suction holding plates 68a and 68b are lowered by the operation of the lifting cylinders 64A and 64B, and the suction holding plate 68 is attached to the discharge path surface of the belt 94a of the belt conveyor 94.
a and 68b are brought into contact with each other. At this time, the lid removing head 6
The suction / adsorption function of 2A and 62B is released. Therefore, the lids 10A and 10B sucked and held by the suction holding plates 68a and 68b are temporarily attached to the surface of the belt 94a of the belt conveyor 94. Further, when a predetermined amount of the lids 10A and 10B are laminated and temporarily attached on the surface of the belt 94a, the belt conveyor 94 operates. And the circulating belt 9
Lids 10A, 1 that are temporarily laminated and transferred to the surface 4a
0B hits the discharge bar 100, falls from the surface of the belt 94a, and is sequentially discharged to the discharge container 101 arranged below the discharge bar 100.

Below the lid collecting station 24, three support rollers 102 are arranged as shown in FIGS. 4, 5, 9, 10 and 11. These support rollers 102 are free rollers having the same structure as the support rollers 36 and 38 arranged in the mouth positioning station 22. The three support rollers 102 are fixed by a bracket member 104 onto an inverted T-shaped attachment plate 106. The three support rollers 102 have lifters 108.
It is arranged so that it can be moved up and down.

Further, two stopper rods 110, 110 having the same structure and function as the stopper rods 48, 48 arranged in the mouth positioning station 22 are arranged below the lid collecting station 24. . That is, the two stopper rods 110, 110
Is formed by cylinders 112, 112 so as to be able to move up and down, is normally stopped at an ascended position, and is controlled so as to descend when the lifter 106 ascends.

Further, as shown in FIG. 4, above the lid collecting station 24, a sensor for detecting the drums W conveyed into the lid collecting station 24 is arranged in the mouth positioning station 22. A photoelectric sensor 114 having the same function as the photoelectric sensor 54 is provided.

Below the cover recovery defective product discharge station 26, the drums W (defective cover recovery products) to which the covers 10A and 10B are not temporarily attached are removed from the transport path and moved to another place. As the non-defective product discharging means, for example, two discharging rollers 116, 116 are arranged. The two discharge rollers 116, 116 are formed at intervals in the width direction of the chain conveyor 32a, as shown in FIGS. The two discharge rollers 116, 116 are attached to the housing 2 by a support bracket 118 having a substantially U shape.
It is held on the lower frame 30 of the frame 8. Discharge roller 11
Both ends of the shafts 6 and 116 in the axial direction are rotatably supported by the ends of the support bracket 118 in the length direction. The length of the two discharge rollers 116, 116 in the axial direction is longer than the diameter of the drum can W. In particular, one discharge roller 116 is driven to rotate the discharge roller 116 itself in both forward and reverse directions. Rotation drive unit (not shown)
Is built in. Further, the support bracket 118 is
The lifter 120 supports the lifter 120 so that it can be moved up and down.

Further, below the lid collection defective product discharge station 26, two stopper rods 122, 122 are provided at intervals in the width direction of the chain conveyor 32a, like the previous stations 24, 26. The cylinders 124, 124 are arranged so that they can be moved up and down. And the two stopper rods 122, 122 are always
Although the lifter 120 is stopped in an ascended state, it is controlled so as to descend when the lifter 120 ascends.

Further, below the cover collection defective product discharge station 26, a roller conveyor 126 is arranged in a direction orthogonal to the feeding direction of the chain conveyor 32a. In the lid temporary attachment defective product discharge station 26, when the lifter 120 is lifted, the two discharge rollers 116, 116 are arranged to cover the defective cover collection defective product discharge station 2.
By supporting the bottom surface of the drum can W that has been conveyed into the inside of the drum 6 and rotating one of the exclusion rollers 116, the drum can W can be transferred to another place via the roller conveyor 126.

In addition, the lid collecting defective product discharging station 2
As shown in FIG. 4, a sensor for detecting the drum can W that has been conveyed into the lid temporary attachment defective product discharge station 26 is provided on the upper side of 6 as the above stations 22, 2 respectively.
A photoelectric sensor 128 having the same function as the photoelectric sensors 54 and 114 arranged in No. 4 is arranged.

Further, as shown in FIG. 5, above the cover recovery defective product discharging station 26, two opening portions A and B of the large and small drums W conveyed into the cover recovery defective product discharging station 26 are provided. 10A, 10 that were temporarily attached to
As a sensor for detecting whether or not B has been removed, for example, diffuse reflection type photoelectric sensors 130 and 132 including a light projector and a light receiver are provided. One photoelectric sensor 130 is arranged above the larger mouth portion A of the drum can W, and the other photoelectric sensor 132 is arranged above the smaller mouth portion B of the drum can W.

The lids 10A and 10B temporarily attached to the two large and small mouths A and B of the drum can W are replaced by the lid removing head 62.
If it is removed by A, 62B, photoelectric sensor 13
The light emitted from the projectors 0 and 132 is
Since the light passes through the openings a and b of the mouths A and B of 10B, the light receiver cannot detect the reflected light. On the contrary, when the lids 10A and 10B are not removed, that is, when the lids 10A and 10B are temporarily attached to the mouths A and B, the light emitted from the projectors of the photoelectric sensors 130 and 132 is not emitted. The photoelectric sensors 130 and 132 operate by hitting the surfaces of the lids 10A and 10B and sensing the reflected light by the light receiver. Then, the lids 10A and 1 temporarily attached to both the mouth portions A and B of the drum can W
When 0B is correctly removed, the lifter 120 does not move up, and the drum can W is conveyed to another next station by the chain conveyor 32a. On the contrary, when neither one of the lids 10A and 10B has been removed, the lifter 120 moves up and the discharge roller 1
The drum can W, which is a defective cover collection product, is transferred to the roller conveyor 126 by 16 and 116 and discharged from the chain conveyor 32a.

Next, the lid body 10A, 10B that has closed the openings a, b of the mouth portions A, B of the drum can W using the automatic lid body collection device 20 of this embodiment is removed and collected. The method of collecting will be described. The method of collecting the lids 10A, 10B temporarily attached to the mouths A, B of the drum can W of this embodiment is roughly divided into (1) two mouths A, large and small, of the drum can W at the mouth positioning station 22; Step of positioning B, (2) Lid collection station 24
In this case, the large and small openings A and B of the drum can are accurately positioned, and the lid 10 is temporarily attached to the large and small openings A and B.
Removing A and 10B and collecting, and
(3) At the cover collection defective product discharge station 26,
It is inspected whether or not the lids 10A and 10B temporarily attached to the large and small openings A and B of the drum can W have been removed, and the lid 1
The drum can W (defective product for recovering the lid) in which 0A and 10B have not been removed is removed from the chain conveyor 32a (transport path) into three steps. Less than,
The steps performed at each station 22, 24, 26 will be described.

(1) The drum can W before coating is carried on the chain conveyor 32a by the mouth positioning station carrying means 32. The drum can W is placed in the mouth positioning station 22 in a state where it stands upright with respect to the chain conveyor 32a so that the surfaces of the lids 10A and 10B temporarily attached to the two large and small mouths A and B face upward. It will be transported. The conveyed drum can W hits the two stopper rods 48, 48. When the drum can W hits the stopper rods 48, 48, the lifter 42
Rises. When the lifter 42 rises, the stopper rods 48, 48 descend and the rotation assisting member 52 descends. In this case, the bottom surface of the drum can W is supported at three points by the three support rollers 34, 36, 38. Further, the upper surface of the drum can W is brought into contact with and supported by the pressing roller 52 a of the rotation assisting member 52. In that state, 1
The drum can W is rotated by rotationally driving the one support roller 34. When starting to rotate the drum can W, the pressing roller 52a stabilizes the initial rotation of the drum can W and prevents the drum can W from slipping. After the rotation of the drum can W, the rotation assisting member 52 immediately rises.

Next, when the proximity switch 56 detects the mouthpiece portion of the smaller mouth portion B of the drum can W, the rotation drive of the support roller 34 is stopped, so that the drum can W.
Stops rotating. In this case, the positioning stopper 53
Since the positioning rod 53a of the drum lowers, it hits the peripheral edge of the larger mouth portion A of the drum can W, that is, the mouthpiece portion, and the rotation of the drum can W stops almost simultaneously with it. When the rotation of the drum can W stops, the lifter 42 descends. When the drum can W is lowered by lowering the lifter 42, the drum can W is again moved by the chain conveyor 32a.
Are transported to the next lid body recovery station 24. At this time, the drum can W is placed in the mouth positioning station 22.
Is not located, the photoelectric sensor 54 does not detect the drum can W, so that the two stopper rods 48, 48 rise again and stand by.

(2) Lid collecting station The drum can W that has been conveyed hits the two stopper rods 110, 110. When the drum can W hits the two stopper rods 110, 110, the lifter 106 rises. When the lifter 106 rises, the drum can W
The bottom surface of the is supported by three support rollers 102. When the lifter 106 rises, the stopper rod 1
10, 110 is lowered, and the lifting cylinder 64A,
64B operates and the lid removing heads 62A and 62B descend.

Further, the lifting cylinders 64A and 64B
By this operation, the suction holding plates 68a and 68b respectively descend and come into contact with the lids 10A and 10B temporarily attached to the mouth A and the mouth B of the drum can W. Adsorption holding plate 68a
When 68 and 68b come into contact with the lids 10A and 10B, the lids 10A and 10B are sucked and sucked by the suction / suction action of the lid removing heads 62A and 62B, and are held on the lower surfaces of the suction holding plates 68a and 68b. In this way, the lid 1
0A and 10B are removed from the mouth A and the mouth B of the drum W by the lid removing heads 62A and 92B.

Further, the lifting cylinders 64A and 64B are used to attach the lid 10 to the lower surfaces of the suction holding plates 68a and 68b.
When A and 10B are suction-held, the lifting cylinder 64A,
The lid removing heads 62A and 62B are raised by the operation of 64B. That is, the suction holding plates 68a and 68
b ascends while holding the lids 10A and 10B. Then, the discharge cylinder 66 is activated. When the discharge cylinder 66 operates, the rod 6 of the discharge cylinder 66
7 is the belt 94a surface (discharge path surface) of the belt conveyor 94
Extend above.

Further, by operating the elevating cylinders 64A and 64B, the suction holding plates 68a and 68b descend and come into contact with the discharge path surface of the belt 94a. Then, the lid body 10 held by the suction holding plates 68a and 68b.
A and 10B are temporarily attached to the discharge path surface of the belt 94a. After that, the suction holding plate 6 is lifted by the lifting cylinders 64A and 64B.
8a and 68b rise, and further, the suction cylinder 66 returns the suction holding plates 68a and 68b to the original state and position, and returns to the initial state. These series of working steps are repeated, and a predetermined amount of the lids 10A and 10B are provided on the surface of the belt 94a.
Are laminated and temporarily attached.

A predetermined amount of the lid 10A on the surface of the belt 94a,
When 10B is laminated and temporarily attached, the belt conveyor 94 operates and the belt 94a is circulated. And the belt 94
The lids 10A and 10B temporarily laminated on the a-side hit the discharge bar 100 arranged on the belt conveyor 94,
The belt 94 a drops from the discharge path surface and is discharged to the discharge container 101 one after another.

By the lid removing heads 62A and 62B,
When the lids 10A and 10B temporarily attached to the large and small openings A and B of the drum can W are removed, the lifter 106 descends. When the lifter 106 descends, the drum can W descends, and the drum can W is conveyed to the next lid recovery defective product discharge station 26 by the chain conveyor 32a.
At this time, the drum can W is placed in the lid collecting station 24.
Is not located, the photoelectric sensor 54 does not detect the drum W, and therefore the two stopper rods 110, 11
0 rises again and stands by.

(3) Lid collection defective product discharge station The drum can W that has been conveyed hits the two stopper rods 122, 122. When the drum can W hits the two stopper rods 122, 122, the lifter 120 moves up. When the lifter 120 moves up, the stopper rods 122, 122 move down. In addition, the photoelectric sensor 13
0, 132, two large and small mouths A of the drum can W,
It is detected whether or not the lids 10A and 10B are temporarily attached to B. When the lids 10A and 10B are not temporarily attached, the ejection rollers 116 and 116 eject the drums W of defective lid collection to the roller conveyor 126. When the lids 10A and 10B are temporarily attached,
The lifter 120 does not move up and the drum can W is conveyed to another station by the chain conveyor 32a. At this time, since the drum can W is not located in the cover recovery defective product discharge station 26, the photoelectric sensor 128 does not detect the drum can W, so that the two stopper rods 122, 122 rise again and stand by. Become.

In the automatic lid recovering apparatus 20 of this embodiment, the conveying means 32 such as a conveyor system including the chain conveyor 32a, the sensors 54, 114, 128, 130, 1 are provided.
32, proximity switch 56, each stopper rod 48, 1
Cylinders 50, 112, 12 for operating 10, 122
4, each lifter 42, 106, 120, support roller 34
Roller drive unit 40 for driving the roller, pressing roller 52a
The sequence control controls the operation / stop of the rotation assisting member 50, the positioning stopper 53, the lid removing / collecting device 60, the belt conveyor 64, the discharge roller 116, and the like.

That is, the lid automatic recovery device 2 of this embodiment
In the method of recovering the lid body using 0, in order to achieve the purpose of removing and recovering the lid bodies 10A and 10B temporarily attached to the two large and small mouths A and B of the drum can W, a predetermined input is performed. Program control is performed according to the schedule. Program control proceeds in a correct sequence through a series of work programs to achieve the desired result. Each of the above stations 22, 24
In and 26, the next state to be transitioned from one state in the middle of the work process is determined by both the current state and the input in the work process existing at that time. The trigger for the state transition is a so-called asynchronous type, which is given each time the input changes.

According to the lid recovery method using the automatic lid recovery device 20 of the present embodiment, in the series of work steps for handling a large number of drums W, the lid removing device 60 is used at the lid recovery station 24. 10A and 10B temporarily attached to the mouths A and B of the drum can W are removed, and the removed lids 10A and 10B are attached to the belt 94a of the holder 92 (discharging road surface) with the pressure-sensitive adhesive layer 14 thereof. ) Can be securely attached and collected. In this case, in this embodiment, since the lids 10A and 10B are laminated and temporarily attached to the surface of the belt 94a, the lids 10A and 10B removed from the mouths A and B of the drum can W are collectively collected in predetermined amounts. You can Therefore, according to the lid recovery method using the automatic lid recovery device 20 of the present embodiment, the lids 10A and 10B temporarily attached to the two large and small mouths A and B of the drum can W can be effectively and effectively attached. Can be economically recovered.

FIG. 19 is a fragmentary front view solution diagram showing another example of the automatic lid-collecting device used for carrying out the method for collecting the lid temporarily attached to the mouth of the container according to the present invention.
FIG. 20 is a schematic side view thereof. The lid automatic collection device 200 shown in FIG. 19 and FIG. 20 is particularly different from the lid automatic collection device 20 of the above-described embodiment in comparison with the lid removal device 6 in particular.
Only the structure of the holding body 92 for collecting the lids 10A and 10B removed from the mouths A and B of the drum can W by 0 is different, and the structure and action / effect of other devices and members are the same as those described above. This is the same as the automatic lid recovery device 20 of the embodiment.

In the above-described automatic lid temporary attachment device 20, the lids 10A and 10B removed from the mouths A and B of the drum can W are
It is recovered by the circulating endless annular holder 92, that is, by temporarily attaching it to the surface of the belt 94a by the belt conveyor 94. However, in the automatic lid recovery device 200 shown in FIGS. Lids 10A and 10B removed by lid removal heads 62A and 62B
Is configured to be collected by a holder 202 that is arranged so as to be able to move up and down. That is, FIG. 19 and FIG.
The holder 202 of the automatic lid body recovery apparatus 200 shown in FIG. 2 includes a discharge table 204 having a flat surface portion 204a. Discharge stand 204
Is formed so that it can be moved up and down by a discharge table elevating cylinder 206. According to the lid automatic recovery device 200 of this embodiment, the lid 1 removed by the lid removal heads 62A and 62B.
0A and 10B are laminated and temporarily attached to the flat surface portion 204a of the discharge table 204. Further, the discharge table elevating cylinder 206 operates to lower the discharge table 204. And the discharge table 204
A plurality of lids 10A and 10B that are laminated and temporarily attached to the surface
Are efficiently collected by, for example, an operator.

[0060]

According to the present invention, the lid temporarily attached to the mouth of the container can be reliably and economically recovered, and the lid temporarily attached to the mouth of the container can be recovered. A recovery method is obtained. That is, in the method of recovering the lid temporarily attached to the mouth of the container according to the present invention, the lid removed from the mouth of the container is securely attached to the holder by the pressure-sensitive adhesive layer of the lid. Therefore, unlike the conventional method of recovering a temporary lid, the temporary lid does not fall onto the ground without being collected and scattered. Furthermore, when the lids are temporarily attached so as to be stacked on the holding body, a plurality of lids removed from the mouth of the container are collectively collected, as compared with the conventional technique of individually collecting the lids one by one. It becomes possible. Therefore, according to the method for recovering the lid temporarily attached to the mouth of the container according to the present invention, it is possible to effectively and economically recover the lid as compared with the conventional method for recovering the temporary lid. .

[Brief description of drawings]

FIG. 1 is a back view showing a label-shaped lid body that is collected by a method for collecting a lid body that is temporarily attached to the mouth of a container according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a cross-sectional view of essential parts showing a state in which the lid body shown in FIGS. 1 and 2 is temporarily attached to the mouth portion of the drum can.

FIG. 4 is a schematic plan view showing an example of a lid automatic collection device used for carrying out the method for collecting the lid temporarily attached to the mouth of the container according to the present invention.

5 is a front view solution view of the automatic lid recovery device of FIG. 4. FIG.

6 is an illustrative view of the automatic lid body recovery device of FIG. 5 as seen from the direction of arrow VI.

7 is an illustrative view of the lid automatic collection device of FIG. 5 as seen from the direction of arrow VII.

FIG. 8 is a schematic plan view of relevant parts showing a positional relationship between a support roller and a drum can and a rotation driving mechanism of the support roller in the mouth positioning station.

FIG. 9 is an enlarged front view of essential parts showing the positional relationship between the drum can, the stopper rod, the lifter, and the like in the mouth positioning station and the lid recovery station.

FIG. 10 is a perspective view showing a main part of a drum can rotating mechanism in the mouth positioning station.

FIG. 11 is a perspective view showing a positional relationship between a mouth portion of a drum can and a positioning stopper in a mouth portion positioning station and a main part of a drum can positioning mechanism by the positioning stopper.

FIG. 12 is a perspective view of relevant parts showing a state where a drum can is conveyed on a chain conveyor.

FIG. 13 is an enlarged plan view showing a main part of a lid collection station.

FIG. 14 is an enlarged front view showing a main part of a lid collection station.

FIG. 15 is an enlarged side view solution diagram showing a main part of a lid body recovery station.

FIG. 16 is a front view solution diagram showing a main part of a lid removing and collecting mechanism in the lid collecting station.

FIG. 17 is a side view solution diagram showing a main part of a lid removing and collecting mechanism in the lid collecting station.

FIG. 18 is an enlarged front view solution diagram of a main part showing the positional relationship between the drum can and the discharge roller in the cover recovery defective product station.

FIG. 19 is a fragmentary front view solution diagram showing another example of the automatic lid recovery device used for carrying out the method for recovering the lid temporarily attached to the mouth of the container according to the present invention.

FIG. 20 is a side view solution view of the lid automatic collection device of FIG. 10.

[Explanation of symbols]

10,10A, 10B Lid 12 Base material 14 Pressure-sensitive adhesive layer 16 Adhesion weakening layer 20,200 Automatic lid collection device 22 Mouth positioning station 24 Lid collection station 26 Station for defective collection of lids 28 housing 30 frames 32 transportation means 32a chain conveyor 34, 36, 38 Support rollers 40 Roller drive 42,106,120 lifters 48,110,122 Stopper rod 50,112,124 cylinders 52 Rotation auxiliary member 52a Pressing roller 53 Positioning stopper 52a Stopper rod 54, 114, 128, 130, 132 Photoelectric sensor 56 Proximity switch 60 Lid removal device 62A, 62B Lid removal head 64A, 64B lifting cylinder 66 Discharge cylinder 68a, 68b adsorption holding plate 72 Connection support member 92,202 holder 94 belt conveyor 116 discharge roller 126 roller conveyor 204 discharge stand 204a flat part 206 Discharge stand lift cylinder W drum A. Larger mouth of drum B Smaller mouth of drum

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhiro Yamaguchi 1-25 Kobashi-cho, Tennoji-ku, Osaka City, Osaka Printing Printing Co., Ltd. (56) 58) Fields investigated (Int.Cl. ⁷ , DB name) B67B 7/00

Claims (5)

(57) [Claims] 1. In a series of working steps in which a large number of containers are continuously handled, an easily peelable label-like lid having a pressure-sensitive adhesive layer temporarily attached to the mouth of the container is provided from the mouth of the container. A method of removing and recovering, the removing step of removing the lid from the mouth of the container, and the lid removed from the mouth of the container to a holder by the pressure-sensitive adhesive layer of the lid. A method for collecting a lid temporarily attached to the mouth of a container, including a collecting step of collecting by temporarily attaching. 2. The method for recovering a lid temporarily attached to the mouth of a container according to claim 1, wherein the holding body includes a circulating endless annular discharge path. 3. The collection of the lid body temporarily attached to the mouth of the container according to claim 1 or 2, wherein the lid body is temporarily attached so as to be stacked on the holding body. Method. 4. The container mouth according to claim 1, wherein the removing step includes a step of removing the lid body from the mouth part of the container by suction means. A method for collecting the temporarily attached lid. 5. An easily peelable label-like lid having a pressure-sensitive adhesive layer temporarily attached to the mouth of the container in a series of working steps for handling a large number of containers continuously from the mouth of the container. A device for recovering a lid temporarily attached to the mouth of a container for removal and collection, wherein a large number of the containers are attached so that the surface of the lid temporarily attached to the mouth of the container faces upward. Transporting means for continuously transporting from the upstream side to the downstream side on the transporting path in a vertical posture, arranged above the transporting device, and positioning the mouth of the container to which the lid is temporarily attached at a predetermined position. A positioning means, a removing means arranged downstream of the positioning means above the mouth of the container for removing the lid from the mouth of the container; and a lid removed from the mouth of the container on the transport path. To the discharge path located away from the transport path. A device for collecting a lid body temporarily attached to the mouth of a container, including a temporary attachment means for temporarily attaching.