JPH0321421B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to placing labels on containers, and more particularly to a method and apparatus for placing flexible tubular labels on containers. .

[Prior art]

Labeling product containers, such as plastic bottles or jars, has been a time consuming procedure compared to the speed of filling and packing the containers with product. When these types of containers were first introduced, labeling information was applied to the containers by silk screening methods. Later, preprinted plastic sleeves were used as labels. The sleeve was first applied by hand and then subsequently heat shrunk into intimate contact with the container.

Since manual installation is slow, a machine was configured to place the tubular label on the container. Very high speed operations are necessary in soft drink pinning plants where production rates are high.

Machines of this type were rather typically constructed for the packaging industry. Continuous motion of the ordered parts of the machine was accomplished primarily by position sensitive electrical or pneumatic switches and pneumatic actuators associated with associated valve controllers.

[Problem to be solved by the invention]

Although conventional machines have substantially sped up the labeling process compared to manual labeling, very high speed operation is still not possible.

In particular, there were delays in feeding bottles, clamping labels, and applying labels to bottles, and there was no consistent coordination between these operations.

Additionally, the time required to operate the control switches and valve controllers utilized in this machine created downtimes and lag times at the end of the stroke of the actuator during continuous operation. The delay time significantly extended the cycle time of the machine. The use of these actuators also created machine structural component accelerations and inertia forces that were large enough to cause damage to machine components and labels when attempting to operate the machine at the desired high production speeds.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a labeling method in which the feeding of the bottle, i.e. the product, the clamping of the label and the application of the label are carried out harmoniously and quickly.

Another object of the present invention is to provide an apparatus for carrying out the product feeding step in a labeling method.

Another object of the invention is to provide a device for carrying out the label clamping step in a labeling method.

Furthermore, another object of the invention is to provide an apparatus for carrying out the label application step in a labeling method.

Yet another object of the invention is to provide an apparatus for carrying out the step in a labeling process of applying a label to a product having a larger diameter than the mandrel for stretching the label.

Furthermore, another object of the invention is to provide an apparatus for implementing the labeling method.

Yet another object of the invention is to provide an apparatus for carrying out a labeling process incorporating an apparatus for applying labels to products having a diameter larger than the mandrel described above.

Yet another object of the invention is to provide an apparatus for performing said labeling, which also includes moving a label gripper mechanism in a coordinated manner along a travel path.

Yet another object of the invention is to provide an apparatus for carrying out said labeling, which also includes orienting the product by detecting the position of the label gripper mechanism.

[Means to solve the problem]

The labeling method of the present invention includes the steps of: arranging a plurality of products in a row along a path; moving the row of products along the path; and when one product is at a labeling station. positioning the one product on the labeling station by applying a pressure differential to the labeling station;
applying a label to the one product by sliding a sleeve label over the product;
removing the one product from the labeling station and positioning another product at the station; and applying a sleeve label to the other product after the other product is positioned at the labeling station and a pressure differential is applied. It consists of a process.

The supply, movement, and removal of products in this method are performed by a product supply mechanism.

sliding the label over the product in this method;
Clamping and releasing the label to apply the label to the product is performed by a clamp assembly.

The label application step in this method is performed by a label application mechanism.

In this method, the step of applying the label to a product larger than the diameter of the mandrel for stretching the label is performed by a label application mechanism that incorporates other cam movements.

The equipment for carrying out this method includes a housing and frame structure that defines a passage for the product, a guide mechanism that sets the travel path for the product, a product extruder (transfer), and a vacuum that applies a pressure differential to the product. source,
and a label assembly.

Other apparatus for carrying out the method further include a label supply source, a mandrel including a surface for stretching the label, a label application mechanism for applying the label by a cam action, a detector for detecting the position of the label, and a label for controlling the label. The apparatus as described above includes a labeling assembly comprising a controller.

Other apparatus implementing the method include label supply means, a structure defining a labeling station,
It consists of a label supply means, a product directing means for directing the product to a labeling station, a label application means including a gripper mechanism, a drive means for harmonically driving the gripper mechanism, and a cam for clamping and releasing the label from the gripper mechanism.

Other devices implementing this method are those described above further comprising means for detecting the position of the gripper mechanism and operating the product orientation means accordingly.

OPERATION In the practice of the invention, the periodically operated product feed mechanism is normally driven from a drive unit via a release clutch. The clutch engages in response to the generation of a position control signal indicating that the labeling assembly is out of the product travel path and away from the labeling station.

The product feed mechanism preferably includes product engaging advancement members that move in a coordinated manner to sequentially advance the products to the labeling station. The advancing member is driven by a rod and crank which are engaged and unclutched by a drive unit when the advancing member is in a predetermined position. The product engaging advancement member is preferably an L-shaped plate and reciprocates across the product supply conveyor from a rest position to a product extrusion position. As the plate advances from the rest position to the product extrusion position, it forces the product into a passageway extending across the labeling device. When the machine is first placed in use, repetitive cycling of the plates creates a queue of product along the travel path through the passageway. The passageway includes a labeling station. Once the labeling machine begins a cycle to apply a label, when the label feeding unit is near the top of the travel path to grasp another label for the next cycle, the plate will reciprocate in synchronization with the labeling motion. Exercise and push the row by one product, specifically one bottle. This extrusion traverses the row by one bin length, expelling the labeled bottle from the passageway and inserting a new unlabeled bottle into the passageway. Thus, each cycle of the extruder advances the column a distance that is an integral multiple of the diameter of one of the products to be labeled.

The labeling station has a perforated bottle support connected to a vacuum source. A vacuum source cooperates with the perforated body support to apply a pressure differential to the product to be labeled. The pressure differential secures and stabilizes the product in its station. The products are in rows, but when the label is pulled down through the side of the product placed in the labeling station,
Labels can pass between the product just labeled and the next product to be labeled. This is because if the products are lightweight, they can move slightly to pass between adjacent products.

When the L-shaped plate moves forward and one side of the L pushes new product into the row and moves the row forward, the L
The other side of the shaped plate is effective for blocking the product supply along the product supply conveyor. After the plate has been substantially lowered to its rest position, the product feed conveyor advances the next product into the space between the just extruded product and the plate for the next extrusion cycle. supply products for.

A preferred label application device uses sleeve labels that are separably secured to each other in web form. Successive labels are joined along a line of weakness in the web, and each label is cut from the web and placed on the product. The label is suitably marked, which mark is not easily visible in ambient light but is responsive to stimulating radiation. The labeling apparatus is equipped with a landmark detector that detects the position of the label near the end of the web and generates an output signal for maintaining the web in the detected position.
A suitable detector responds to approximately 3660 Å units of light. Suitable landmarks and methods for their use are described in co-pending U.S. Patent Application No. 166,500 (filed July 7, 1980).
Hershey, Lerner and Bernard Lerner, “Continuous Web Registration”) (this application was published in U.S. Patent No.
Corresponding to No. 4680205). Labeling station label feeding and placement on products is accomplished through a new and improved gripper mechanism and cam arrangement. In the present invention, the gripper mechanism consists of a pair of spaced apart, vertically reciprocatable clamp assemblies. Each clamp assembly includes a cooperating jaw that is spring biased into a clamped position when a label is applied.
The clamp and cam cooperate to cause the clamp to reciprocate as follows.

1) When the gripper mechanism is at or near the peak of movement, it clamps the label located at the clamp station.

2) Separating the label from the web as the next label on the web (sleeve) is moved to the clamping station and stopped there in response to a signal from the landmark detector.

3) As the clamps move down toward the labeling station, move the clamps apart from each other to stretch the clamped labels.

4) After the label has reached the desired position around the bottle to be labeled, the jyo motion is released by a cam against the action of a spring.

5) Upon return, the pneumatic actuator opens the jaws of the clamp and the cam arrangement effectively moves the clamp assembly into clamping alignment with the next label.

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 and 2 show a sleeve-shaped plastic label 1 by implementing a labeling method.
1 shows a labeling device for pasting 1 on a container 12. The illustrated labeling device 10 is positioned between a container supply conveyor 14 and a container delivery conveyor 16. Containers are introduced into the device 10 from the supply conveyor 14 and labeled containers are directed from the device 10 to the delivery conveyor 16. Containers, illustrated as being in the form of plastic soft drink bottles, are fed between conveyors 14 and 16 via passageway 20 within apparatus 10.

The preferred labeling device 10 includes a base 22 formed by a framework of structural steel members (see FIGS. 3-5) that are welded together. The base 22 is
A horizontal support surface 23 is defined on the top thereof. A vertical support assembly 24 projects upwardly from support surface 23 and, in the preferred embodiment, comprises a vertical plate 24a and a plate support bracket 24b. The base 22 and support assembly 24 are covered by a suitable housing panel 25 and access door 26 (FIGS. 1 and 2). An operable control panel 27 is installed along one side of the device.

As shown in FIGS. 2-5, the apparatus 10 includes a label feeder 30, a labeling station 32 where each label 11 is assembled onto successive containers 12, and a container for feeding the containers 12 to the labeling station 32. Directional unit 3
4. Label supply unit 3 for positioning individual labels with respect to labeling station 32
6. a labeling mechanism 40 for moving the individual labels from the supply unit 36 and positioning them on individual containers at the labeling station 32, and a drive unit 42 for operating the container directing unit 34 and the labeling mechanism 40; include. The drive unit coordinately moves a label gripper mechanism along a path of travel between a labeling station and a label supply unit for labeling containers that are successively fed to the labeling station. This point is another feature of the present invention. Additionally, the drive unit is in dynamic communication with a controller which produces an output signal indicative of the exact location of the labeling assembly on the route of travel. The signals are used to direct the operation of the labeling assembly to the operation of other components of the labeling device. This point is also another feature of the present invention. Container orientation unit 34 and labeling mechanism 4
The operation of the controller 44 is driven in part from the drive unit 42 as well as the other components of the device 10.
(Fig. 4).

Specifically, the labeling method of the present invention is carried out using the following apparatus.

Label Feeder In a preferred embodiment, the label 11 is cylindrical and formed of a preprinted resilient stretchable plastic film material such as polyethylene plastic or the like. As shown by FIG. 3, successive labels are releasably connected to each other to form a web, such as a tubular web, web, or the like. The adjacent edge of the label is defined by a line of weakness, such as a perforation across the web. Although the illustrated web is flat and coiled for storage, other storage techniques may be used. The web is the filing date
No. 166,499 of July 7, 1980, the disclosure of which is utilized in this application with respect to the Web (this application is incorporated by reference in U.S. Pat.
Corresponding to No. 4467207). In the disclosed embodiments,
Since the label elastically stretches when assembled onto a container, the label elastically clamps onto the assembled container and remains in place.

The label supply device 30 supplies labels,
The labels are fed from the feeding device at a controlled rate as required by the labeling method. The device 30
is shown to include a web support structure 50 in which a web of labels is shown spirally wound into a roll or coil configuration. The web is unrolled and the continuous labels forming the web are separated and placed on the container. Although not shown, a feed motor and web tensioning mechanism are utilized to control the payout of the label from the web roll. The web is directed onto a supply roll 52 and from there at a label supply unit 36. The various components of the dispensing apparatus 30 may be of any suitable or conventional construction well known to those skilled in the art, and therefore, the details of the construction of the dispensing apparatus 30 do not require illustration or detailed description. The components of the feeding device 30 are arranged within a metal plate housing designated by reference numerals 54 and 56.

Label Supply Unit Label supply unit 36 receives the web from supply apparatus 30, stretches the labels and positions individual labels for separation from the web and placement on a container by labeling mechanism 40. The feed unit 36 is illustrated in FIG. 3 and includes a web stretching mandrel 60 suspended from a mandrel support 62, a web position detector 64, and a web break 66 cooperating with the mandrel 60 under the control of the position detector 64. and a support rod 68 fixed to the vertical support plate 24a.

A mandrel 60 extends inside the tubular web and the web is stretched as it passes through the mandrel. Mandrel 60 is formed from a tubular sheet metal or plastic body having a truncated cone 70 at its upper end and a generally cylindrical skirt 72 forming its lower end. A spring arm 74 is positioned outboard of the lower edge of the mandrel skirt 72 to stretch the bottom edge of the label disposed around the skirt. The skirt 72 is provided with a pair of cutouts 76 on the sides so that a label supported around the base of the skirt can be grasped and pulled downwardly against the mandrel. Support needle 7
8 extends upwardly from cone 70 and holds mandrel roller 80 . Roller 80 cooperates with mandrel support 62 to allow the label web to pass through roller 80 and then the mandrel.

Mandrel support 62 is preferably formed by a support arm 82 (see FIG. 3) that carries a roller 84 on its projecting end. roller 84
supports mandrel rollers 80 and the label web is fed between each pair of rollers. Support arm 82 can be adjustably positioned perpendicular to the device by means of clamp 86. Clamp 86 acts between arm 82 and vertical support bar 68.

Web position detector 64 detects landmarks on each successive label when it is properly positioned with respect to mandrel 60 and generates a web break operation signal. Web position indicia are precisely placed on each label and the detector 64 and mandrel 60 are positioned such that the bottom edge of each label is aligned with the detector 64. The detector 64 is preferably designed to detect the wavelength shifted light emitted by the normally invisible or nearly invisible indicator indicia printed on each label. A preferred detector 64 is the 1981 4
U.S. Application No. 253193, filed May 27, entitled “Control Marking Detector
Marking Detector) (this application corresponds to U.S. Pat. No. 4,392,056). That disclosure is utilized in this application in its entirety with respect to the detector. Additional details of the construction and operation of detector 64 can be obtained by consulting the referenced applications, so a detailed detailed explanation will not be necessary in this application.

Detector 64 is adjustably supported relative to labeling station 32 by support assembly 90 (see FIG. 3). Support assembly 90 includes a clamp 92 by which assembly 90 is connected to support rod 68 . This allows support assembly 90 to be adjusted to the desired vertical position and clamped in place. The assembly 90 includes the support rod 6
It is formed by a plate-like body projecting outwardly from 8 and defining a central opening. mandrel 6
0 is placed within the opening. Detector 64 is connected to support assembly 90 by position adjustment mechanism 94;
The mechanism 64 allows fine vertical adjustment of the detector relative to the mandrel.

Each web break 66 is disposed on each side of the mandrel 60 and is rigidly suspended from a support assembly 90 (see FIG. 4). Each web break includes a solenoid assembly 100 and a break pad 102 secured to a support assembly 90. Break pad 102 is located on the solenoid armature adjacent to the mandrel. Solenoid assembly 1
When 00 is energized, the break pad 102 moves rapidly to engage the web material around the mandrel. The force of engagement between the break pad and the web is sufficiently large that the web is prevented from moving relative to the mandrel. Thus, as the labeling assembly moves the label from the assembly mandrel to the container, the label carried by the labeling assembly is severed from the web by application of the web break 66. When the web is thus cut, the label that the web break engages is positioned with the newly cut lower end aligned with the bottom of the mandrel 60. Solenoid assembly 100 is energized by an output signal from detector 64 that specifies that the indicia on the label has reached a predetermined position with respect to the mandrel. The activation of the break is instantaneous, but long enough to ensure cutting of the web. Blake is then deactivated to free the web.

Labeling station Labeling station 32 is a mandrel 60
The labeling mechanism 4 is arranged below the labeling mechanism 4 .
0 can pull the cut label down onto the container at the labeling station.

In the preferred embodiment illustrated, the containers are fed to a labeling station on one wall of a vacuum manifold 110 (see FIG. 4), which has a perforated grid-like upper wall on which the containers 12 are placed. is located. The container is maintained upright and stable by the differential pressure acting on the container. Vacuum pressure within the manifold 110 is created by a centrifugal vacuum pump 112, which is connected to the base 2.
It is arranged within a skeletal structure forming 2. The vacuum pump suction is hermetically connected to the manifold 110 by a conventional hose, not shown.

Container Directing Unit The feeding, movement and removal of products, ie bottles, in the labeling method of the invention is carried out by a container directing unit 34. Also within the scope of the invention is a container directing (feeding) device that performs some steps of the labeling method. Container directing unit 34 moves containers one at a time from conveyor 14 and advances the containers one by one to labeling station 32 in a timed manner relative to the operation of labeling mechanism 40 . It is advanced to delivery conveyor 16. Referring to FIGS. 2, 5 and 6, unit 34 consists of a container advancement member 120 which is driven from drive unit 42 via clutch 122 and harmonic drive transmission 124. Referring to FIGS. Member 12
0 is generally L-shaped and has a container extrusion surface 126 and a container abutment surface 128. Member 120 functions to be reciprocated by drive transmission 124 to "uncouple" a container from the row of containers on conveyor 14 and push the container a predetermined distance into passageway 20. While one container is being pushed into the apparatus, the next successive container on conveyor 14 is moved into adjacent surface 128. When member 124 returns to its original position, its container is moved by the conveyor into position for engagement with extrusion surface 126 during the next cycle of operation.

The containers 12 in the device 10 remain adjacent to each other so that when additional containers are pushed into the passageway 20, all containers are advanced and one container is delivered onto the conveyor 16. The containers in the passageway 20 are guided along a predetermined path by guide rails 129 that engage the containers and extend along the sides of the containers in the passageway 20 except in the area of the labeling station 32.

The illustrated container advancement member 120 is slidably disposed on a guide bar 130 (FIG. 6) and secured to a reciprocating link member 132. Link member 132
is connected to the crank 134 via a connecting rod 136. Crank 134 is driven from drive shaft 140. A drive shaft 140 extends from crank 134 through clutch 122. A drive 140 is connected to the output of the clutch 122 to cause the advancing member to reciprocate in concert along the guide bar when the clutch is engaged. The clutch input is continuously driven from drive unit 42 via a chain drive transmission.

Clutch 122 is electrically operated and, when deenergized, disengages and leaves member 120 at rest. This is the normal state of the clutch and the container advancement member 12
0 is normally placed in the position illustrated by FIG. When clutch 122 is biased, member 12
0 is moved to advance the container of device 10 a predetermined distance into passageway 20 (as illustrated by FIG. 6) and then retracted to its normal position. When member 120 has completed its reciprocating motion, clutch 122 is deenergized. In the illustrated system, the clutch is deenergized by operation of a mechanical switch 150. The switch 150 is opened by a cam 152 located at the distal end of the shaft 140. The switch 150 remains closed to bias the clutch whenever the pusher member 120 is away from its normal position. The container engaging member 120 reciprocates quickly compared to the operation of the labeling mechanism. The movement of member 120 is then adjusted to coincide with a certain period of time. That is, during that time period, the labeling mechanism is not in a position to obstruct movement of the container through the apparatus 10.

The connection between connecting rod 136 and crank 134 is adjustable to adjust the stroke of member 120. This allows containers of different sizes to be pushed into the apparatus 10 while ensuring that the containers are accurately positioned at the labeling station 32.

In the illustrated preferred embodiment of the invention, drive means 42 comprises an electric motor 160, the output of which is coupled to a reduction gear 162. The output shaft of the speed reducer is fixed to a set of sprockets from which both the container orientation unit 34 and the label application mechanism 40 are driven. As best shown in FIG.
It is driven through chain 166, crossshaft 168, and chain clutch input sprocket 169.

Label Application Mechanism The label application step in the labeling method of the present invention is performed by a label application mechanism. The labeling mechanism 40 includes a reciprocating support frame 200, a harmonic drive transmission 202 between the drive unit 42 and the frame 200, and a frame 200.
The label gripper clamp assembly 204 is held by a label gripper clamp assembly 204.

The Gritzper clamp assembly performs clamping and releasing of the label for sliding the label onto the product and applying the label to the product.
The gripper assembly grips the label located at the clamping station at the lower end of the mandrel 60 and pulls the label down onto the container at the labeling station. The gripper assembly 204 releases the label when properly positioned on the container and is then driven upwardly again to repeat the label application cycle and perform label clamping, which will be described in more detail below. The support frame 200 consists of a pair of parallel cylindrical support shafts 210 that are supported adjacent to the plate 24a by sliding pairings 212 that project from the plate 24a and extend vertically along the plate 24a. Reciprocating movement is possible. Support shaft 21
Both ends of 0 are secured together by a connecting rod 214. Due to the weight of support frame 200 and label gripper assembly 204, counterweight 220 (fifth
) is suspended behind the support plate 24a and connected to the support frame 200 by a chain 222. The chain 222 is connected to the plate 24a.
It is wrapped around a sprocket 224 supported on the upper end of the sprocket. The counterweight 220 ensures that the labeling mechanism 40 reciprocates quickly and smoothly in a harmonious manner and that the motion of the parts of the apparatus 10 is not impeded by unreasonably large inertial forces.

The harmonic drive transmission 202 for the illustrated support frame 200 includes motor 160
and a crank arm 23 driven from the reduction gear 162 via a chain and sprocket 232.
Consists of 0. The connecting rod 234 is connected to the crank arm 2
30 and an adjacent one of the connecting rods 214. When the motor 160 operates, the support frame 200 supports the crank 230 and the connecting rod 234.
through which a sinusoidal harmonic motion is formed. Thus, the label gripper assembly 204 is attached to the mandrel 60.
to the labeling station 32 along a travel path. Crank arm 230 is adjustably connected to connecting rod 234 so that the stroke of the support frame can be modified as required.
This adjustment is utilized within certain limits to enable the placement of labels on different containers having a wide variety of heights.

The label gripper assembly 204 consists of a pair of gripper jaw mechanisms 250 (see FIG. 4), each mechanism 250 being retained on a respective axis of the support shaft 210 by a respective gripper support assembly 252. The two gripper yaw mechanisms 250 and the two gripper yaw support assemblies 252 are each identical, so only one of each of these assemblies will be described in detail. Referring to FIGS. 7 and 8, the gripper jaw assembly 250 is formed by a base plate 260, a fixed jaw member 262 attached to the base plate 260, a movable jaw 264, and a jaw actuation mechanism 266. The fixed jaw member 262 is formed by a support body 270 and a semi-cylindrical sleeve-shaped jaw 272.
The support 270 is screwed to the base plate and the jaw 272 extends upwardly from the support 270. The yaw 272 has a radius of curvature that is less than the radius of the inner wall of the mandrel 60 so that when the gripper yaw mechanism 250 is positioned to grip a label supported on the mandrel 60, the yaw 272 is located inside the inner wall of the mandrel. The movable jaws 264 are located on the outside of the mandrel and label, while the movable jaws 264 extend upwardly in close proximity.

The movable jaw 264 has a curved inner surface that curves along the curvature of the fixed jaw 262.
Movable jaw 264 further includes a protruding gripper pad 274 that aligns with cutout 76 in the mandrel. Thus, when the movable jaw is actuated toward engagement with the fixed jaw, the label at the end of the mandrel moves between the gripper pad 274 and the fixed jaw 2.
It is held (clamped) between the cylindrical surface of 72.

The Jyo operating mechanism 266 includes an operating rod 276 fixed to the movable Jyo 264 and a base plate 260.
guide blocks 280, 282 and 284, biasing spring 286, pneumatic piston cylinder actuator 290 and mechanical actuator 2
Contains 92. An actuation rod 276 extends through each guide block. A spring 286 acts between the actuation rod and the guide block 282 to bias the movable jaw 264 toward engagement with the fixed jaw. Mechanical actuator 292 and pneumatic actuator 2
90 are each operable to overcome the biasing force of spring 286 to open the jaws.

Biasing spring 286 is preferably a helical compression spring, which is compressed between guide block 282 and collar 294, which is secured to actuation rod 276. The force of the compression spring is such that the movable and stationary gripper jaws are always firmly engaged when the force of the spring is not restrained by either the pneumatic actuator 290 or the mechanical actuator 292.

A pneumatic actuating cylinder is secured to guide block 282 and its piston is engageable with a stop 296 secured to actuating rod 276. When air is supplied under pressure to the air actuator 290, the piston extends and moves the rod 276 and the movable jaw 2.
64 from the fixed jaw. When the air actuated cylinder is vented to atmosphere, spring 286 quickly closes the jaw again. That is, the movable jaw is placed in the clamp position. The strength of the spring is such that the jaw closes almost instantaneously when the air actuated device is vented. The air-operated device is shown as being supplied with air under pressure through a suitable hose with an air supply. Cylinder ventilation is controlled by conventional electrically operated valves, not shown.

Mechanical jyo actuator 292 is effective to rapidly open the jyo against biasing spring 286, releasing the label located on the container of the labeling station. A preferred mechanical jaw actuator is secured to rod 276 and pivots 3
It consists of a main body forming 02. Pivot 302 is for an operating lever 304 depending from it. The lever 304 holds a cam follower roller 306 at the opposite suspended end and supports the base plate 26.
Acts against a fulcrum formed by 0. As the cam follower roller is moved transversely to the container direction of the labeling station, the lever 3
04 pivots about the fulcrum to pull the body 300 laterally away from the container to open the jaw.

The mechanical actuator is associated with a cam plate 310 (see FIGS. 3 and 4);
10 is fixed to and extends upwardly from a horizontal support surface 23. The cam plate 310 defines a cam ramp 312 that is positioned in vertical relationship with the labeling station and the cam follower roller 306 so that when the label reaches the proper position with respect to the container, the cam follower roller 306 on top of it, effectively jerking the Jiyo open and releasing the label. The illustrated cam 310 is vertically adjustable to allow acceptance of different containers and/or labels.

Figures 7 and 8 illustrate the gripper jaw in a closed position where the protruding ends of the stationary jaw are engaged. The engaged fixation jaws form a cylindrical shape. This is the situation when the gripper yaw mechanism 250 is gripping a label placed on the mandrel 60. The engaged fixed jaws extend within the interior of the mandrel so that the label material is not unduly compressed when the label is clamped between the fixed jaw and the movable jaw.

Typically, label 11 is applied to a container having a larger diameter than mandrel 60. In such cases, the gripper yaw mechanisms 250 must be laterally separated from each other in order to assemble the labels around the containers of the labeling station. Such separation is accomplished by camming as described below. Also within the scope of the invention are label application devices incorporating this cam action and devices incorporating the label application device for carrying out a labeling method.

Gripper support assembly 252 is configured to allow lateral separation of gripper yaw mechanism 250 as it grips and moves a label toward a container at the labeling station.
configured. Gripper support assembly 252 (third
and 4) consists of a support base member 320 and an articulation member 322. The base member 320 is fixed to a corresponding one of the support shafts 210. Articulation member 322 is supported by base 320 and in turn supports each gripper yaw mechanism 250.
The base member 320 carries a fixed guide bar 324 that extends horizontally relative to the base and the articulation member 322 is slidable on the guide bar 324 for movement laterally relative to the support base 320. Installed. Articulation member 322 is provided with a support lip 328 to which gripper yaw mechanism 250 is attached. Each of the pair of biasing springs 330 is attached to the guide rod 32
placed around each of the four. The spring is
Acts against articulation member 322.

The Jyo joint member 322 is a cam follower roller 33
2 (see FIG. 4), and the roller 332 is supported by a cam plate 334 supported on a support surface 323.
work together with The roller 3 is attached to the cam plate 334.
A cam ramp 336 is provided which is engageable with 32 and which cam ramp 336 is conveniently shaped. This configuration provides for movement of the gripper jaw assembly laterally away from the contour of the container at the labeling station while the label remains gripped between the gripper jaws. This movement of the gripper support assembly 252 allows the label to be opened to a larger diameter range than the container, and thus allows the labeling station to open the label to a larger diameter range than the container, and therefore to the container at the labeling station. Makes it easy to position labels around.

During one complete cycle, the labeling mechanism operates as follows. Assume that the gripper yaw mechanism 250 is at the bottom of its stroke and a label has just been applied to the container at the labeling station 32. The gripper yaw mechanism 250 includes a cam plate 310 that is connected to a mechanical yaw actuator 292.
is activated to open the jaws 262 and 264. At the same time, cam plate 334 is in contact with articulation member cam follower 332 so that the gripper yaw mechanisms are laterally spaced from each other. However, this spacing is not large enough to allow containers to be retracted into and out of the labeling station 32.

When the grippurge yaw mechanism begins to move upward from the bottom of its stroke, the pneumatic actuator 29
0 is supplied with compressed air through its control valve and cooperates with mechanical actuator 292 to maintain the jaw in an open position. As the grippurge yaw mechanism continues to move upward, the mechanical actuator 292 moves away from the cam plate 310, while the grippurge yaw moves away from the pneumatic actuator 29.
It is in an open state due to the action of 0. The grippurge yaw mechanism remains open and spaced as it continues to move upward. However, when the cam follower 332 of the articulation member traverses the cam ramp 336, the gripper yaws are moved into engagement with each other by the biasing spring 330 (seventh
(see figure).

The grippurge yaw mechanism continues to move upward while decelerating. When the gripper yaw mechanism reaches the top of its stroke, the stationary yaw is placed inside the mandrel and the air actuator 290 is vented. Biasing spring 286 quickly closes the jaw (clamp position) to grip the label on mandrel 60. As the jaw begins to move downward, the web of labels is pulled down over the mandrel. This lowering continues until the next successive indicator mark on the label is detected by the detector 64.
The web break 66 is then engaged and the label gripped by the jaw is separated from the web.

The gripper yaw mechanism with the severed label continues to move downwardly from the mandrel, and the gripper yaw mechanism 332 is actuated by its associated cam plate 334 to move the gripper yaw mechanism away. The label is moved over the container at the labeling station and pulled downwardly along the container by a gripper yaw mechanism.
The mechanical jaw actuator 292 is then again operated by its associated cam plate 310 to open the gripper jaw and release the label into position on the container.

Control Device One of the important features of the device 10 constructed in accordance with the present invention is that the various components can be easily coordinated and operated. The labeling mechanism 40 is similar, but in particular,
The operation of unit 34 is critical because containers must be guided to the labeling station only during that portion of the cycle of operation when gripper mechanism 250 is above the container height. The timing of this operation is critical. This is because the gripper mechanism 250 may be positioned above the container for only a small portion of the cycle of operation.

The control device 44 controls the timing of each constituent means to operate them in relation to each other.

A schematic diagram of the control device 44 is shown in FIG. The control device 44 consists of a digital encoder 350 and an electrical logic unit 351 which receives an input signal from the encoder 350 and produces an output signal at precisely predetermined times during each cycle of the device 10. encoder 350
is of conventional construction and is driven by a timing belt 352 as shown in FIG. The belt 352 is wrapped around a pulley driven by the drive shaft for the crank 230. Digital encoder 350 produces a series of different electrical impulses during each rotation of crank 230. Thus, for each digital signal produced by encoder 350, crank 230 (and therefore frame 200 and its associated components) is accurately positioned.

The output from encoder 350 is provided to logic unit 351. The unit 351 may be constructed in any suitable or desired configuration and is therefore not shown in detail. Logic unit 351 responds to predetermined signals from encoder 350 to produce output control signals at precise times during a cycle of the device. Although the logic unit is capable of producing multiple outputs, for simplicity only three output utilization devices are disclosed in connection with FIG.

Referring to FIG. 9, logic unit 351 is
An electrically energized valve controller 360 is shown to govern operation. Valve controller 3
60 controls operation of a control valve for actuator 290 between conditions in which the valve supplies compressed air to actuator 290 and conditions in which the valve vents the actuator to atmosphere. Logic circuit 351 is suitably adjusted such that logic unit 351 provides an output signal to output circuit 366 in response to a position signal generated by digital encoder 350 when the grippurge yaw mechanism reaches a predetermined position approximately at the bottom of its stroke. Produces an output on line 364. Circuit 366 produces an output signal to energize valve controller 360, which controls actuator 29.
Adjust the valve to supply compressed air to 0. When the grippurge yaw assembly reaches the top of its stroke, the digital encoder 350
The signal generated by the logic unit 35
1 produces an output on line 368 to output circuit 366. Output circuit 366 connects valve controller 360
, thereby causing the control valve to actuate the actuator 29
0 to atmosphere to allow the gripper jaws to quickly close and grip the label on the mandrel 60.

As mentioned above, the operation of pneumatically operated devices tends to be excessively slow in most cases, but the present device 10
In this case, rapid operation of actuator 290 is not important. The only requirement for high speed operation of the actuator 290 is that the gripper yaw mechanism is effective in opening the yaw for the time it takes to move from the lowest position to the upper end of the stroke. Actuator 290 is readily operable as intended during that time interval. On the other hand, when the control valve for the actuator 290 operates to vent the actuator, the jyo actuation spring needs to be effective to quickly close the jyo.

The illustrated controller 44 is also configured to regulate the start of each cycle of the container directing unit 34. As shown in FIG. 9, container orientation clutch 122 is operated by controller 362. When the gripper yaw mechanism 250 is raised to a sufficiently high position to allow movement of the container to and away from the labeling station 32, the digital encoder 350 generates an output signal that causes the logic unit 351 to produces an instantaneous output signal on line 370. The signal on line 370 is shown as being input to a buffer 372 which produces an instantaneous output effective to energize clutch controller 362. Once the clutch is energized and engaged, mechanical control switch 150 is closed to effectively complete the holding circuit for controller 362. The container directing unit 34 thereby remains active throughout its entire cycle of operation. Drive unit 4
The gear ratios between drive unit 2 and assembly 40 and between drive unit 42 and unit 34 are sufficiently different that unit 34 is driven through a cycle of its operation more quickly than assembly 40. It should be obvious that

Finally, a controller 380 for landmark detector 64
is shown operated from logic unit 351 responsive to output from digital encoder 350. Under certain circumstances, the landmark detector becomes sensitive to other radiation incident on the detector during normal operation (eg, radiation from landmarks applied for manufacturing purposes). In such situations, it may be desirable to operate the ultraviolet detector only within a short "window" of time during which the label 11 moves along the mandrel 60. 9, encoder 350 generates an output signal just as the gripper mechanism grips the label on mandrel 60. Referring to FIG. The resulting signal is unit 3.
51 on line 382 to initiate activation of the landmark detector controller 380. A second signal is generated on line 384 to terminate activation of the landmark detector when the gripper yaw has advanced a predetermined distance downwardly from the mandrel 60.

The logic unit 351 is an encoder 350
It should be understood that it is adjustable to respond to different outputs from the. This allows adjustment of the timing of operation of the device to accommodate containers and/or labels of different shapes and sizes. Similarly, cams 310, 33
4 is adjustable or replaceable with a cam having a different shape to accommodate different containers. Furthermore, Mandrel 60 and Jiyo 26
By replacing 2,264 with an appropriately shaped element, containers with a variety of cross-sectional shapes can be easily labeled.

〔effect〕

The present invention is configured as described above, and has the following effects.

By the labeling method of the present invention, supply of products,
Label feeding, clamping and application of labels to products can be carried out harmoniously and quickly.

The product supply mechanism that carries out product supply in the labeling method of the present invention allows each product to be supplied to and taken out from the labeling station.

The clamp assembly performing the clamping of the label in the labeling method of the present invention allows the tubular label to be reliably clamped, stretched to fit the product, and applied to the product.

The apparatus for carrying out the label application step in the labeling method of the present invention allows rapid application of labels to products.

Another device for carrying out the label application step in the labeling method of the present invention allows rapid application of labels to products that are larger in diameter than the mandrel used to stretch the labels.

The device implementing the labeling method of the invention allows product feeding, label feeding, clamping and application of the label to the product to be carried out harmoniously and quickly.

Other devices implementing the labeling method of the present invention may be used to label products larger than the mandrel diameter.

Other devices carrying out the labeling method of the invention allow for coordinated movement of the gripper mechanism that clamps the label and applies it to the product, so that labeling can be carried out quickly.

A device implementing the labeling method of the invention allows the position of the gripper mechanism to be detected and the product to be oriented accordingly, so that labeling can be carried out quickly.

The embodiments disclosed herein are for illustrating the present invention, and those skilled in the art will be able to make various applications, modifications, and uses without departing from the spirit of the invention, which is limited only by the scope of the claims. It is clear that it can be done.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an apparatus implementing the invention. 2 is a plan view of the apparatus of FIG. 1; FIG. 3 is a side view of the apparatus of FIG. 1 with some parts removed; FIG. 4 is a front view of the device of FIG. 3 with some parts removed and some parts cut away; FIG. FIG. 5 is a rear view of the apparatus of FIGS. 3 and 4. FIG. FIG. 6 is a plan view of a container-directing unit forming part of the apparatus of FIG. 1; 7 is a plan view of a portion of the labeling assembly forming part of the apparatus of FIG. 1; FIG. FIG. 8 is a front view of the apparatus of FIG. 7. FIG. 9 is a schematic diagram of a control device for the device of FIG. 1; [Explanation of main symbols] 10...device, 11...plastic label, 12...container, 14...container supply conveyor, 16...container delivery conveyor, 20...pathway, 22...base, 23...horizontal support surface, 24...vertical support assembly Solid, 24a... Vertical plate, 24b...
Plate support bracket, 25...panel, 26...
Access door, 27... Control panel, 30... Label supply device, 32... Labeling station, 34
... Container orientation unit, 36... Label supply unit, 40... Label sticking mechanism, 42... Drive unit, 44... Control device, 50... Web support structure, 5
2... Supply roll, 54, 56... Metal plate housing, 60... Mandrel, 62... Mandrel support, 64... Position detector, 66... Web break,
68...Support rod, 70...Frustrated conical part, 72...Skirt, 74...Spring arm, 76...Cutout part,
78... Support needle, 80... Mandrel roller, 82
...Support arm, 84...Roller, 86...Clamp, 90...Support assembly, 92...Clamp, 94...
Position adjustment mechanism, 100...Solenoid assembly, 10
2... Break pad, 110... Vacuum manifold,
112... Vacuum pump, 120... Container advancing member, 1
22...clutch, 124...transmission,
126...Container extrusion surface, 128...Container adjacent surface, 12
9...Guide rail, 130...Guide bar, 132...
Reciprocating link member, 134... Crank, 136... Connecting rod, 140... Drive shaft, 150... Mechanical switch, 152... Cam, 160... Electric motor, 16
2... Reduction device, 164... Right angle gear drive unit,
166...Chain, 168...Cross shaft, 1
69...Chain clutch input sprocket, 2
00... Reciprocating support frame, 202... Drive transmission, 204... Label gripper assembly, 210... Support shaft, 212... Slide pairing, 214... Connection rod, 220... Parallel weight, 222...
Chain, 224... Sprocket, 230... Crank arm, 232... Sprocket, 234... Connecting rod, 250... Grippage yaw mechanism, 252...
gripper support assembly, 260... base plate, 262... fixed jaw member, 264... movable jaw, 266... jaw actuating mechanism, 270... support body,
272... Jiyo, 276... Operating rod, 280, 28
2,284...Guide block, 286...Spring, 290...Piston cylinder actuating device, 29
2... Mechanical actuation device, 294... Collar, 300...
Main body, 302... Pivot, 304... Operation lever,
306...Cam follower roller, 310...Cam plate, 312...Cam lamp, 320...Support base member, 322...Joint member, 324...Fixed guide bar,
328...support lip, 330...biased spring, 3
32...Cam follower roller, 334...Cam plate, 336...Cam lamp, 350...Encoder, 351...Logic unit, 352...Timing belt, 360...Valve controller, 362...Clutch controller, 364, 368, 370, 382, 3
84...Line, 366...Output circuit, 372...Buffer, 380...Detector controller.

Claims (1)

[Claims] 1. A method of labeling products, comprising: a) aligning a plurality of products adjacent to each other along a route to form a row; and b) moving the row of products along the route. c) positioning and stabilizing a product in the labeling station by applying a pressure differential to the product when the product is in the labeling station; and d) a series of interlocked sleeve labels. e) gripping one end of the sleeve label by a pair of driven clamps; and f) the clamps still gripping the series of linked sleeve labels. g) sensing the arrival of the next sleeve label at the clamping station and moving the clamp to the labeling station in order to move the terminal sleeve to the labeling station; g) sensing the arrival of the next sleeve label at the clamping station; c) stopping the movement of the clamp thereby separating the end sleeve from the next sleeve; h) movement of the clamp to a labeling station until the end sleeve label is drawn to the desired position on the product; and then releasing the grip of the clamp to position the sleeve in the desired orientation on the product; i) returning the clamp to the clamp station; 2. The method according to claim 1, wherein the step of moving the row of products comprises pushing the rows of products along a path and removing the products. 3. The method of claim 1, further comprising the step of positioning a further product in the next position when a sleeve label has been applied to the one product. 4. The method according to claim 1, further comprising the step of stretching the terminal sleeve label when the terminal sleeve label is lowered. 5. A method as claimed in claim 4, wherein the stretching step is accomplished before the sleeve is drawn over the product. 6. The method according to claim 1, wherein the pair of clamps moves toward each other during the return step. 7. The method of claim 1, wherein the step of releasing the clamp grip is accomplished by a pair of spaced apart cams. 8. A method as claimed in claim 1, wherein moving a row of products along the path comprises: a) feeding a plurality of products to a machine having a product delivery conveyor; b) extruding a first product into said channel with a harmonically driven L-shaped extrusion plate and simultaneously blocking the supply of product by a delivery conveyor by said plate; and c) returning said extrusion plate to its original position. Return, second
d) pushing the second product into the passageway in order to further push the first product into the passageway by the second product; e) repeating steps c) and d) for other products and guiding the extruded product along a predetermined path including a station through one passage; f) each product is applying a sleeve label to each product when positioned at the station; g) whether said clamp is a clamping station;
aligning the repetition of said extrusion step d) with said label application step f) to effect extrusion of the product and associated movement along a predetermined path when in its vicinity; However, the method. 9. The method according to claim 8, further comprising: removing the labeled product by the machine on a product supply conveyor after the labeled product has been extruded from the machine. 10. The method according to claim 1, wherein the step of moving the row of products includes the step of pushing the row of products along a path to position the products. 11. A product feeding mechanism for use in a labeling machine or similar machine, comprising: a) a guide defining a linear travel path; and b) supported by said guide for linear reciprocating movement from a rest position to a product extrusion position. c) a plate drive assembly for selectively reciprocating the plate along said guide, the drive assembly including a clutch, and upon the desired reciprocation of the plate; a plate drive assembly including control means for sensing and actuating a clutch in response to the sensing. 12. The mechanism of claim 11, wherein the drive assembly drives the plates into harmonic motion. 13. A clamp assembly for use in a machine for applying labels to products, comprising: a) a member for guiding the reciprocating movement of the clamp assembly between a label supply position and a label positioning position; and a support including a clamp support piece for supporting the remainder of the assembly; b) an extendable clamp base mounted on the support piece and holding a fixed jaw near one end; c) mounted on the base. a jyo guide extending towards the other end of the base from a position near the fixed jyo; d) a movable jyo slidably mounted on the guide for movement between a label clamp position and a label release position; a) a spring biasing the movable jaw and urging the jaw toward its label clamping position; and f) a fluid mover connected to the movable jaw for positioning the movable jaw in its label release position prior to clamping the label. a) a fluid actuator connected to the movable jaw for enabling the movable jaw to move into its label clamping position by means of a spring; g) pivotally mounted near the other end of said base; h) a linkage which interconnects the movable jaw and the cam lever and moves the movable jaw to its label release position against the force of a spring when the cam lever is actuated by a cam cooperating with the cam lever; , an assembly consisting of . 14. Apparatus for applying tubular labels to products, said device for removing successive labels from a label supply and assembling each label onto a respective product, comprising: a) a first and a second label; a label gripper jaw capable of relative movement therebetween between a closed position for gripping a label and an open position for releasing said label; b) (i) said spring means for biasing the jacket to a closed position; (ii) a movable member for opening the jacket against the force of the spring means; and (iii) movement of the jacket from a labeling station to a label supply source. the jaws may be maintained open by a force resisting the force of the spring means when the jaws are positioned to grip a label from a label source; a fluid-operated actuator for relieving the force; c) gripper yaw support means for periodically moving said gripper yaw along a predetermined travel path; and d) when the label is applied to the product. cam means cooperating with said movable member to open said jaw and release said label. 15. An improved label application mechanism comprising: a reciprocatable clamp, each having at least two cooperable label gripping jaws cooperating with the clamp, the clamp reciprocating; and spaced apart cams positioned to effect movement of the clamp and the clamp station, the cam and the clamp moving the clamps toward each other as the clamps move toward the clamping station. Put JIYO inside the next label,
positioning the other jaw of each clamp outside said next label, and when the clamp is at or near the end of its travel, clamping a label located on the clamp station between said two jaws, the clamp being at a label applying labeling station; moving the clamps away from each other to stretch the clamped label when moving towards it, and to open the clamp to release the labeling when the label is positioned on the object of the labeling station. A mechanism with the shape of. 16. A product labeling machine comprising: a) a housing and frame structure defining a passageway with a labeling station therein; b) a guide for establishing a path of movement of the product through said passageway to and through the labeling station. c) a stationary product support along the travel path at the labeling station; and d) continuously extruding the products on the path, a distance at least approximately equal to the diameter of one of the products thus extruded. e) a cyclically movable product extruder for advancing the row of products along a path during each cycle; e) a product support for applying a pressure differential to the product and positioning it on the support of the labeling station; A machine comprising: a coupled vacuum source; and f) a labeling assembly supported by a housing and frame structure for applying a label to a product positioned at a labeling station. 17. A product labeling machine comprising: a) a housing and frame structure defining a labeling station; b) a guide mechanism for establishing a product travel path toward and through the labeling station; and c) along the travel path. a fixed product support with an aperture located at the labeling station; d) moving the products successively on a path for each cycle by a distance at least approximately equal to the diameter of one of the products being moved; e) a vacuum source connected to the product support for applying a pressure differential to the product located at the labeling station; f) a labeling assembly spaced from the labeling station and supported by a housing and frame structure, said labeling assembly comprising: (i) a web of connected tubular labels along a label feed path; (ii) a surface located along the label supply path for stretching each label as the labels are successively moved along the label supply path; (iii) spaced apart movable clamps each having a plurality of clamp jaws, a clamp driver, and cam means cooperating with the clamps for selectively moving said clamps and clamp jaws; , as the clamps move towards the clamping station, the clamps are brought closer together, causing one jaw of each clamp to be placed inside the next label and the next jaw to be placed outside said other label; When the clamp is at or near the end of its movement, causing a label located on the clamping station to be clamped between said jaws, moving the clamps away from each other to stretch the clamped label, and moving the clamps away from each other to stretch the clamped label; (iv) a label applying mechanism configured to cause the jaws of the clamp to open to release the label when the label is positioned on the product; (v) a detector that senses the presence of a second label on the clamp station when the clamp station is pulled, and emits a signal in response to said sensing; and (v) each time the detector emits a signal in response to said sensing. A machine comprising: braking means responsive to a detector for braking the web; 18 Apparatus for applying cylindrical labels onto products, comprising: a) label supply means for storing cylindrical labels; b) a structure defining a labeling station; c) a structure defining a labeling station; label feeding means for arranging labels adjacently; d) product directing means for directing each successive product to a labeling station; and e) movable between said label feeding means and said labeling station. a label gripper mechanism, the gripper mechanism gripping the labels placed by the label supply means and moving the labels to a labeling station; f) a drive motor and a drive transmission; for the label gripper mechanism, wherein the transmission connects the drive motor and the label gripper mechanism and causes the gripper mechanism to move in a harmonic manner, the gripper mechanism moving harmonically along the travel path; drive means; g) cam means cooperating with the gripper mechanism during movement of the gripper mechanism along the travel path to apply the label onto the product; first and second relatively movable label clamping jaws operable between the jaws, the jaws being biased by spring means toward a closed position to grip the label between the jaws in the closed position; and wherein the cam means includes a cam member cooperable with the gripper mechanism to release the label gripped by the jaw when the gripper mechanism is in position with respect to the labeling station. A device for opening the jaw against the force of a means. 19 Apparatus for applying cylindrical labels onto products, comprising: a) label supply means for storing cylindrical labels; b) a structure defining a labeling station; c) a structure defining a labeling station; label feeding means for placing labels in close proximity; d) product directing means for directing each successive product to a labeling station; and e) movable between said label feeding means and said labeling station. a labeling gripper mechanism, the gripper mechanism gripping the labels placed by the label supply means and moving the labels to a labeling station; f) a drive motor and a drive transmission; the label gripper mechanism, wherein the transmission body connects the drive motor and the label gripper mechanism to cause the gripper mechanism to move in a harmonic manner so that the gripper mechanism moves harmonically along the travel path; g) cam means cooperating with the gripper mechanism during movement of the gripper mechanism along the path of motion to apply the label on the product; and h) cam means for temporally controlling the movement of the gripper mechanism. i) an electrical signal generator driven by the drive means in relation to the gripper mechanism for generating an electrical signal corresponding to the position of the gripper mechanism along the path of travel; signal responsive means for activating said product orientation means when said product orientation means is in a predetermined position.