TAPE MACHINE

Abstract

An improved automated tape applicator that applies pavement marking tape to a pavement surface. The automated tape applicator may include dual knives for cutting two or more patterns simultaneously, a hinged frame that permits an adhesion roller to be lifted off the ground when not in active use, an electronic clutch for selectively engaging a tape feed mechanism, a swiveling front tire, an automated controller for simultaneous application of multiple markings and accurate dimensioning, and/or replaceable knife inserts.

Claims

1. An automated tape applicator for installing pavement marking tape on a pavement surface, comprising: a supply spindle onto which one or more rolls of pavement marking tape may be installed; an adhesion roller for applying pressure to a non-adhesive side of said pavement marking tape to adhere an adhesive side of said pavement marking tape to said pavement surface; an upper guide roller for directing pavement marking tape from said one or more rolls toward said adhesion roller; an upper feed mechanism comprising at least one roller for applying pressure to said adhesive side of said pavement marking tape to aid in engagement of said pavement marking tape by said upper guide roller, wherein said upper feed mechanism is retractable from said upper guide roller when not in use and extendable to said upper guide roller when in use; and a cutting mechanism disposed between said upper guide roller and said adhesion roller for cutting said pavement marking tape.

2. The automated tape applicator of claim 1, wherein said cutting mechanism comprises a first knife and a second knife, wherein said first knife is configured to cut pavement marking tape from a first roll of pavement marking tape and said second knife is configured to cut pavement marking tape from a second roll of pavement marking tape.

3. The automated tape applicator of claim 2, further comprising: a first knife actuator operably engaged with said first knife; a second knife actuator operably engaged with said second knife; and an automated controller in operative communication with said first and second knife actuators and configured to control each of said first and second knife actuators independently.

4. The automated tape applicator of claim 3, further comprising: a sensor disposed adjacent to a moving component of said automated tape applicator, wherein a rate of rotation of said moving component is directly associable with a speed of said automated tape applicator in relation to said pavement surface and wherein said sensor transmits a signal regarding said rate of rotation to said automated controller.

5. The automated tape applicator of claim 4, wherein said moving component is a toothed sprocket that is rotated as a result of said adhesion roller rolling across said pavement surface.

6. The automated tape applicator of claim 5, wherein said automated controller is programmable with at least a first pattern and a second pattern for application of pavement marking tape, wherein an operator may select said first pattern for application of pavement marking tape from said first roll of pavement marking tape and said second pattern for application of pavement marking tape from said second roll of pavement marking tape.

7. The automated tape applicator of claim 6, further comprising an upper feed mechanism actuator for extending and retracting said upper feed mechanism with respect to said upper guide roller.

8. The automated tape applicator of claim 7, wherein said automated controller calculates a distance traveled by said automated tape applicator as a function of said signal from said sensor and transmits control signals to direct operation of: said first knife actuator; said second knife actuator; and said upper feed mechanism actuator; wherein said operation of said first knife actuation, said second knife actuator, and said upper feed mechanism actuator according to said control signals results in application of pavement marking tape from said first roll of pavement marking tape according to said first pattern and application of pavement marking tape from said second roll of pavement marking tape according to said second pattern.

9. The automated tape applicator of claim 8, further comprising: a drive mechanism operatively attaching said adhesion roller to said upper guide roller to rotate said upper guide roller in response to rotation of said adhesion roller across said pavement surface.

10. The automated tape applicator of claim 9, further comprising: a clutch in operative engagement with said upper guide roller, wherein said clutch is controllable by said automated controller to effect at least one of rotational engagement and disengagement of said upper guide roller with respect to said drive mechanism.

11. The automated tape applicator of claim 1, further comprising: a frame, wherein said adhesion roller is mounted to said frame, wherein said frame is pivotally mountable to a carrier vehicle, wherein said frame may be pivoted with respect to said carrier vehicle between an elevated configuration wherein said adhesion roller is spaced apart from said pavement surface and an application configuration in which said adhesion roller is in contact with said pavement surface.

12. The automated applicator of claim 11, wherein said carrier vehicle is a walk-behind cart.

13. The automated tape applicator of claim 12, wherein said cart comprises a swiveling front wheel, and wherein said swiveling front wheel is selectively lockable to restrict swiveling.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] For a more complete understanding of the present disclosure and further advantages thereof, reference is now made to the following detailed description taken in conjunction with the drawings in which:

[0024] FIG. 1A illustrates a left side view of an automated tape applicator mounted to a cart according to the present disclosure;

[0025] FIG. 1B illustrates a right side view of the automated tape applicator of FIG. 1A;

[0026] FIG. 2A illustrates a top view of an automated tape applicator without a carrier vehicle;

[0027] FIG. 2B illustrates a left sectional view (A-A) of the automated tape applicator of FIG. 2A;

[0028] FIG. 2C illustrates an exploded view of the automated tape applicator of FIG. 2A;

[0029] FIG. 3 illustrates a drive mechanism and associated proximity sensor;

[0030] FIG. 4 illustrates a dual blade arrangement;

[0031] FIG. 5 illustrates an embodiment of a hinged attachment of an automated tape applicator to a cart in an application configuration; and

[0032] FIG. 6 illustrates the embodiment of FIG. 5 in an elevated configuration.

[0033] FIG. 7 illustrates an automated controller.

[0034] While the invention is susceptible to various modifications and alternative forms, specifics have been shown by way of example in the drawings and will be described in detail below. It should be understood that the intention of the detailed description is not to limit aspects of the invention to the particular embodiments described. Rather, the invention covers all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

DETAILED DESCRIPTION

[0035] Reference will now be made to the accompanying drawings, which at least assist in illustrating the various pertinent features of the presented inventions. The following description is presented for purposes of illustration and description. Furthermore, the description is not intended to limit the disclosed embodiments of the inventions to the forms disclosed herein. Consequently, variations and modifications commensurate with the following teachings, and skill and knowledge of the relevant art, are within the scope of the presented inventions.

[0036] FIGS. 1A and 1B illustrate an embodiment of an automated tape applicator (ATA) 10. The ATA 10 includes a frame 12, which may be attached to any number of different types of equipment including, but not limited to, carrier vehicles such as trucks, pickups, ATV vehicles, and walk behind carts. In the illustrated embodiment, the ATA 10 is illustrated as being mounted to a walk behind cart 50, which includes two or more rear wheels and at least one front or rear swiveling wheel 85. However, this embodiment is provided by way of example and not by way of limitation. As shown in the illustrated embodiment, the cart 50 has a swiveling wheel 85 installed at the front end which allows the ATA 10 to be positioned easier than other methods with less effort by the operator. A locking mechanism may be provided in conjunction with the swiveling wheel 85 to secure the wheel once the ATA 10 has been moved into the desired position and orientation to aid the operator in maintaining a straight line. Notably, a swiveling wheel 85 may be disposed on the rear end of cart 50 instead of the front end, and multiple swiveling wheels may also be utilized.

[0037] As shown in FIGS. 2A-2C, the ATA 10 has a frame 12 that supports a number of rollers, spindles, actuators, etc. that allow for application of pavement marking tape 20 to a pavement surface. One or more rolls of pavement marking tape may be installed on supply spindle 14. The pavement marking tape 20 may be positioned at a desired location along the length of the supply spindle 14 and secured with spacing rings, which may be adjustable, to retain each roll of pavement marking tape in the desired alignment. The pavement marking tape from the supply spindle 14 may pass over a tensioning roller 16 which aids in maintaining a suitable level of tension on the pavement marking tape as it is being applied. After passing over the tensioning roller 16, the pavement marking tape may pass between an upper feed mechanism 18 and an upper guide roller 22. The upper feed mechanism 18 includes a number of rollers which engage the adhesive side of the pavement marking tape to press the pavement marking tape into the upper guide roller, thereby feeding tape from the roll(s) down toward an adhesion roller 26 and lower feed mechanism 19. The lower feed mechanism 19 may include, similar to the upper feed mechanism 18, a plurality of rollers for engaging the adhesive side of the pavement marking tape to sandwich the tape between the lower feed mechanism 19 and the adhesion roller 26. The rollers of the upper feed mechanism 18 and lower feed mechanism 19 may comprise ridges, sprockets, teeth, or the like to reduce to the surface area which contacts the adhesive side of the tape to prevent binding or sticking of the tape on the feed mechanism rollers. The rollers and/or ridges may be made from any suitable material such as metal or plastic.

[0038] The rotation of the adhesion roller 26 may be driven by engagement of the adhesion roller 26 with a pavement surface. In this regard, when the carrier vehicle stops, the adhesion roller 26 may also stop. A drive mechanism may connect the adhesion roller 26 and upper guide roller 22 such that rotation of the upper guide roller 22 is also driven by engagement of the adhesion roller 26 with the pavement surface. A clutch 80 may be included in the drive mechanism to engage and disengage the upper guide roller 22 when needed. For example, the automated controller of the ATA 10 may send a signal for the clutch 80 to engage the upper guide roller 22 when a free end of pavement marking tape 20 is suspended between the upper guide roller 22 and adhesion roller 26. This engagement may cause the free end of the tape to be fed downward to the adhesion roller 26. In contrast, when a cut is made, for example, to begin a gap in a skip line, the clutch 80 may disengage the upper guide roller 22 to prevent the feeding of tape to the adhesion roller 26.

[0039] One or more of the rollers of the upper feed mechanism 18 may be attached to a carriage which is positionable towards and away from the upper guide roller 22. In the illustrated embodiment, the bottom portion of the carriage is fixed to the frame 12 and the upper portion of the carriage is attached to an upper feed mechanism actuator 25. In this regard, by pivoting the carriage with the actuator 25, the upper feed mechanism 18 may be extended toward the upper guide roller 22 or retracted therefrom. Accordingly, when the upper guide roller 22 is rotated by a drive mechanism connecting the upper guide roller 22 to the adhesion roller 26 (as more fully discussed below), the pavement marking tape 20, which is pinched between the upper guide roller 22 and the upper feed mechanism 18, is fed between the lower feed mechanism 19 and the adhesion roller 26. After passing between the lower feed mechanism 19 and adhesion roller 26, the pavement marking tape 20 is compressed onto the pavement surface by weight from the ATA 10 resting on the adhesion roller 26.

[0040] The ATA 10 also includes cutting mechanism 32 which includes one or more knives 90A, 90B actuated by actuators 34a, 34b. Actuation of an actuator 34 results in advancement of the respective knife 90 to cut the pavement marking tape 20 to a desired length. As more fully discussed below, upon cutting the pavement marking tape 20, the rotation of the upper guide roller 22 and upper feed mechanism 18 may cease until an additional pavement marking tape strip is needed.

[0041] FIG. 2B shows a left sectional view of cross-section A-A of FIG. 2A of an ATA 10 in the application configuration (i.e., frame 12 is pivoted downward such that adhesion roller 26 rests on the ground). In this view, it can be seen that the pavement marking tape 20 is fed from a roll on supply spindle 14, over tensioning roller 16, between upper feed mechanism 18 and upper guide roller 22, between lower feed mechanism 19 and adhesion roller 26, and onto the pavement surface 30. Notably, in this illustrated stage, the pavement marking tape 20 is sandwiched between the pavement surface 30 and the adhesion roller 26 such that forward movement of the ATA 10 will result in tape being pulled from the roll(s) on supply spindle 14. In this regard, the actuator 25 may retract the upper feed mechanism 18 and the clutch 80 may disengage the upper guide roller 22 as these features may not be needed at this stage. When an operator desires to cease application of the pavement marking tape, or when the automated controller initiates a cut in accordance with a selected pattern, actuator 34 may extend knife 90 to cut the tape. With the clutch 80 disengaged from the upper guide roller 22, the portion of tape 20 above the knife 90 remains stationary while the portion of tape 20 below the knife 90 is applied to the pavement surface 30.

[0042] FIG. 3 illustrates the drive mechanism connecting the upper guide roller 22 to the adhesion roller 26. As shown, the adhesion roller 26 has a lower sprocket 72 attached to its axel 74a. The lower sprocket 72 connects to an upper sprocket 78 which is attached to an axel 74b of the upper guide roller 22 via a chain 76. Accordingly, when the adhesion roller 26 is rolled across the pavement surface, rotation of the adhesion roller 26 is translated to the upper guide roller 22 via the chain 76 connecting the two sprockets 72, 78. This, in conjunction with extension of the upper feed mechanism 18 against the upper guide roller 22 permits feeding pavement marking tape 20 to the adhesion roller 26. However, the present inventors have determined that it is not desirable to continually drive the upper guide roller 22. That is, when the pavement marking tape 20 is cut to a desired length it may be desirable to cease feeding pavement marking tape 20 to the adhesion roller 26 by discontinuing rotation of the upper guide roller 22 and upper feed mechanism 18. Accordingly, the inventors have determined it is desirable to utilize a clutch 80 to disengage the upper guide roller 22. The clutch 80 may be interconnected between the upper sprocket 78 and the axel 74b of the upper guide roller 22. Accordingly, the automated controller is operative to disengage the clutch 80 once the pavement marking tape 20 being fed to the adhesion roller 26 is cut. That is, the clutch may be disengaged when there is no need to drive the upper guide roller 22.

[0043] As shown in FIG. 3, a sensor 82 may be used to measure the rotation of the adhesion roller 26. In one embodiment, the sensor 82 is a proximity sensor that gives a pulse each time a tooth on the respective sprocket (in the illustrated embodiment, the lower sprocket 72) moves past the sensor 82. This information is provided to the automated controller to determine distance traveled. Other sensor configurations are also envisaged such as an optical sensor which detects markings on the adhesion roller, or on a belt, for example, in the case that smooth pulleys are used in lieu of toothed sprockets. In any arrangement, such a sensor 82 allows for measuring distance which can be utilized to control the cutting mechanism 32 and/or engagement and disengagement of the clutch 80 to appropriately time the various components of the ATA 10 and lay pavement marking tape 20 in accordance with the selected pattern(s).

[0044] FIG. 4 illustrates the cutting mechanism 32. Notably, in this embodiment, a dual knife arrangement is used although it is contemplated that any appropriate number of knives could be used, for example, a single knife or three knives.

[0045] Each knife 90a, 90b comprises a replaceable knife insert design. A knife insert 92 may be attached to a knife body 94. As shown the knife insert 92 attaches to the knife body 94 with a set of mating apertures and associated screws or bolts (not shown). This allows replacing the knife insert 92 when it becomes worn rather than needing to sharpen or replace the much larger knife assembly. This is important as the cost of the knife insert 92 may be much less than an entire knife 90. The knife insert 92 may be constructed from a different material than the knife body 94. In this regard, the knife body 94 may be constructed from a sturdy and durable material to ensure a long service life while the knife insert 92, which will wear and dull regardless, may be constructed from a hardened material. Alternatively, the knife insert 92 may be constructed from a more durable material than the knife body 94 to extend the service life of the knife insert 92 while avoiding excessive costs associated with constructing the large knife body 94 from a more durable material. The knife insert 92 may be serrated to promote effective cutting.

[0046] As shown in FIGS. 5 and 6, the frame 12 of ATA 10 may be hingedly affixed to a carrier vehicle, in this case a cart 50. In this regard, an operator may lift the adhesion roller 26 off of the pavement surface 30 and into an elevated configuration when pavement marking tape is not being applied to the pavement surface 30. This may allow for easier transport of the ATA 10 when not in use. FIG. 6 illustrates ATA 10 in the elevated configuration in which the adhesion roller 26 is lifted from the pavement surface. An operator may engage a locking feature to retain the ATA 10 in this position. FIG. 5 illustrates ATA 10 in the application configuration in which the adhesion roller 26 is resting upon the pavement surface 30. Frame 12 is shown being pivotally attached to frame 52 at hinge 40. In this configuration, the locking feature may be disengaged. When pavement marking tape application is desired, the hinged frame 12 allows for lowering the adhesion roller 26 onto the ground. In this application configuration, a majority of the weight of the ATA 10 may be supported on the adhesion roller 26 giving the operator uniform pressure on the pavement marking tape being applied. This improves the application of the pavement marking tape by having sufficient and evenly distributed pressure on the pavement marking tape. Cart 50 includes a frame 52 that supports first and second rear tires. In addition, the cart 50 includes handlebars and controls (e.g., brake handles) which improve the ease with which an operator is able to manipulate the ATA 10. The frame 12 of the ATA 10 is pivotally connected at a hinge 40 to the frame 52 of the cart 50.

[0047] In order to maintain the adhesion roller 26 off/above the pavement surface, a mechanism may be provided to secure the ATA 10 in the elevated configuration shown in FIG. 6. As one example, a lock bar (not shown) may be provided to secure frame 12 to frame 52 in the elevated configuration. The lock bar may be pivotally attached to either frame 12 or frame 52 and a corresponding engagement feature (e.g., a lip) may be disposed upon the other. The lock bar may be constructed from the same material as frame 52 (e.g., steel, aluminum, etc.) and may include a notch along its length. The lip may protrude such that the lip may be disposed at least partially within the notch to retain the frame 12 in the elevated configuration. In one embodiment, the lip may be formed from a rod fixed laterally to the frame 12 or 52 but it should be appreciated that the lip may be formed in any appropriate manner, for example, it may be integrally formed with the respective frame.

[0048] As an example, the lock bar may be pivotally connected on a first end to the ATA frame 12 and may have a second end that may be manipulated manually by an operator or by an actuation device. For example, a cable actuator may be attached to the second end and a controller for the cable actuator may be disposed near the handlebars. In some embodiments, the automated controller may be used to selectively actuate the cable actuator. It is envisaged that alternative locking mechanisms and actuators may be utilized to effectuate pivoting and locking of the frame 12 with respect to the frame 52 or another carrier vehicle.

[0049] Compressor (not shown) may be driven by a gasoline engine 45 or any suitable equivalent. The compressor may supply compressed air to a network of pneumatic tubes to power the various actuators (e.g., actuators 25 and 34). Valves disposed throughout the network of pneumatic tubes may be controlled by the automated controller as needed.

[0050] FIG. 6 also illustrates an example placement of automated controller 100 that, among other things, controls the actuation of the knife (or knives) 90, clutch 80, and upper feed mechanism 18, all based off distance traveled as detected by the sensor 82. The automated controller 100 takes that information and processes it in relation to the desired pattern that is loaded in memory or entered via an operator interface to calculate the appropriate timing of actuation of the various components.

[0051] Automated controller 100 may be preloaded with a plurality of patterns (e.g., solid line, skip lines with various dimensions, etc.) which an operator can select from the operator interface. The automated controller 100 may actuate the various components at specified distances based on the pattern(s) selected. This allows the automated controller 100 to automatically create skip lines with gaps, apply specified lengths of pavement marking tape 20, etc. In this regard, an operator does not have to initiate cutting or measure manually, although such operation may be optionally provided.

[0052] The automated controller 100 typically includes a memory (e.g., non-transient, computer-readable memory) and a processor (e.g., implemented as one or more physical processors, microprocessors etc.). The memory has instructions stored thereon, which, when executed, cause the processor to perform various functions. A user can, in an embodiment, interact with the ATA system through a graphical user interface (GUI) 102 and/or through any other user controls (e.g., buttons, switches, keypads, etc.; not shown). In the illustrated embodiment, a GUI 102 is displayed on the automated controller 100 and includes one or more touchscreen controls. In an embodiment, the automated controller includes touchscreen controls 104a, 104b to activate or deactivate each tape line. Additional touchscreen controls provide drop-down menus 106a, 106b for use in selecting a pattern for an activated tape line. The automated controller may additionally include controls to initiate the operation of the ATA, initiate dispensing of tape lines and/or manually cut tape lines. Additional information may be output to or set by the use (e.g., speed; mph).

[0053] Incorporation of the features described above may permit the ATA 10 to provide enhanced functionality. For example, the incorporation of the automated controller 100 and split or dual knives 90 may allow for application of one or two pavement marking lines in a single pass. An operator may be able to load a first pattern and a second pattern to apply different types of markings, for example, a solid line and a skip line simultaneously. With multiple knives 90, an operator may be able to cut a minimum of two different patterns on the same pass. In some embodiments, additional components may also be split such as the upper guide roller 22, the upper feed mechanism 18, or the supply spindle 14. That is, such components may be operative to rotate independent of one another. In such an arrangement, each of the axially aligned upper guide rollers may incorporate its own clutch.

[0054] It is also envisaged that a pointer bar may extend from the front end of ATA 10 for guiding an operator, or a laser may be mounted on the ATA 10 and directed at the pavement surface. One or more sensors may be configured to monitor such a pointer bar or laser and send feedback signals to the automated controller 100. In this regard, the automated controller 100 may adjust certain distances or timing to compensate for positioning indicated by the feedback signals.

[0055] The foregoing description of the presented inventions has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit the inventions to the forms disclosed herein. Consequently, variations and modifications commensurate with the above teachings, and skill and knowledge of the relevant art, are within the scope of the presented inventions. The embodiments described hereinabove are further intended to explain best modes known of practicing the inventions and to enable others skilled in the art to utilize the inventions in such, or other embodiments and with various modifications required by the particular application(s) or use(s) of the presented inventions. It is intended that the appended claims be construed to include alternative embodiments to the extent permitted by the prior art.