JPH06501757A - Pneumatically controlled mechanical applicator for drywall mastic and tape - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Pneumatically controlled mechanical applicator for drywall mastics and tapes , especially regarding tools used in the construction or repair of wall panels, i.e. drywall. Filling the recesses in the wallboard, i.e. drywall, with mastic and applying the mastic. Concerning pneumatically controlled large volume mechanical applicators for applying tape during processing .

The tool of the present invention relates to a tool such as that disclosed in U.S. Pat. No. 4,105,490. do.

When installing wallboard, i.e. drywall, there are no seams or holes on the panel surface of the wallboard. There are many reasons why these and other uneven parts exist. For example, these panels Typically, the width is 1.219 m (4 ft) with the edges together. When the nail or screw is being installed, make sure that the top of the nail or screw does not protrude from the finished surface. It is temporarily embedded in the wall and held in place. As a result, this construction form is prone to cracks, small Holes may form, and in some cases, holes or gouges may form. Therefore, this Irrespective of the method used, all such surface irregularities may be treated with a suitable mastic (mst). ic) (sometimes referred to as "Mud J (+ud)"), and fill it with a smooth plastic. A star-shaped surface must be obtained. Also, cracks or unevenness may occur. In cases of considerable size, the tape may be embedded in the mastic for greater mechanical strength. must be obtained.

Finishing the surface of wallboard under these circumstances basically requires a drying stage between each process. It is carried out using a multi-step method. Depending on the need and the size of the crack or recess cracks or depressions that may be reinforced (or not reinforced) with adhesive tape. , or other mastic undercover layer. with mastic or adhesive Wipe off any excess adhesive while it is being applied. Glue or mastic As the mastic or Apply one or more coats of adhesive and immediately apply a final coat to fill.

Loading and unloading of tools for applying mastic, regardless of how they are used. and cleaning is required. Traditional hand tools have a box-shaped open area and are The adhesive or adhesive is first loaded into this open area and squeezed to adhere to the wall. The tank must be filled and cleaned frequently. Certain mastics are It dries relatively quickly and this can cause small stains inside and outside the tool if not cleaned quickly. Hard debris accumulates and prevents the adhered material from achieving a smooth, uniform finish. depending on the case Therefore, the drying mastic material may interfere with, obstruct, or damage parts of the tool. This may cause the item to become immobile. This reduces the time required to clean tools, Avoid protrusions, crevices, and other areas within the tool that tend to collect dust that will impede thorough cleaning. It is necessary and desirable to eliminate other areas of the problem.

Another problem is that when embedding tape in mastic, traditionally the tape is ・The tape must be cut legally and the tape installed within the crack.

Therefore, large-capacity tools that do not require frequent cleaning and refilling as in the past are now available. It is considered an issue. Another challenge is to dispose of the tape together with the mastic.

Accordingly, one object of the present invention is to provide both tape and mastic and other adhesives. To provide a new and improved tool for applying adhesive to wallboard, i.e., drywall. Is Rukoto. In particular, it is an object of the invention to repeatedly remove mastic from tools. By providing large tools for applying mastic, eliminating the need to be. Here, the object of the present invention is to provide a system that requires special skill and almost no maintenance. Easy to use and does not require any user maintenance. The goal is to provide easy-to-use tools.

Yet another object of the invention is to provide a tool for applying and cutting tape as required. It is to provide. ′ Another object of the present invention is to provide a power assisted construction for simultaneously applying tape and mastic. It is to provide the ingredients.

Still another object of the present invention is to reduce operator fatigue when moving the walls. It is an object of the present invention to provide a tool that is easy to guide and propel.

In order to realize the objects of the present invention, the above and other objects are as follows. to retain the mastic or composition applied to the drywall area. This is achieved by a tool with a large reservoir. Also, the tape passes through this rod-shaped body. The tape is then applied to the wall where it is embedded in the mastic as it is applied. I get sucked into it. All these functions operate pneumatic cylinders that control various functions. controlled by a fingertip control device.

Preferred embodiments of the invention are illustrated in the accompanying drawings. In this attached drawing, 1 is a diagram showing a tool of the present invention, FIG. 1A is an exploded view of the control head also shown in FIG. 1, and FIG. Exploded view of the tape applicator and tape applicator head, Figure 3 shows the parts of Figure 2 interchangeably. 1 is a side cross-sectional view of the tool of the present invention showing how it is connected to the tool; FIG.

The machine of the invention (FIG. 1) can be an electric air compressor, a mastic hopper, or A reservoir 24 and a reel 26 for receiving and dispensing the hose are mounted thereon. A wheeled cart 20 is provided. The rod-shaped body 32 is made of mastic or mud. Hose 28/air tube 30 combination and mastic and tape application head 4 2. Conduit 28 supplies mastic while air conduit 30 supplies mastic. , supplies compressed air that drives the air cylinder in the head. The control head 34 has , a suitable fingertip control device is provided. These control devices (FIG. 1A) are, for example, It may be any suitable device such as plastic covered push button PBI, PB2. I can do it. Push button PBI activates the tape cutter within the hept 42. Push button P B2 controls the flow of mastic to head 42. Mechanically protect the push button A collar 35 is attached to the control head 34 for this purpose.

Place a tape roll or A tape magazine 36 is attached to the rod. Tape 38 is connected to a suitable control lever. - 40 through head 42.

At the top of the rod, a head 42 propels both the tape and mastic onto the wall and the tool and a creaser 5o that presses the tape to a desired position. ing. Cut the tape after the cutter block 52 has been applied.

An exploded view of the tape application and mastic supply head 42 is shown in FIG. It is. An assembled view of this head is shown in FIG.

Cover plates 60 and 60 are connected by bolts to two sets of cover support bars 66 and 68. Various parts are supported within the housing formed by the and two side plates 62 and 64. 9. Most of these covers and side plates are not shown in the drawings to avoid complicating the drawings. a number of holes formed to accept bolts, screws, rivets, etc. Equipped with 1 open part. The transitional attachment section 70 is the rear edge of the cover and side panels 60-64. fastening at the ends, a transition between the rectangular cross-section of the housing and the circular cross-section of the rod 32; 1, the transition mounting is a bracket 72 that secures the bottom of the section 70. Meanwhile, the lower, opposite corner portions of the side plates 62, 64 are expanded and secured.

The nozzle 74 dispensing the MasDeck has a nozzle outlet or control valve 76 and a MasDeck It is equipped with a lower 8. Valve 76 is seated within exit lower 9 .

Mastic flow is responsive to a valve 76 mounted on the outside of side plate 62. It is controlled by a component closed by a cover plate 110. These configuration elements The element selectively rotates the nozzle population valve 76 in response to an operator's fingertip control. This causes the artificial valve to function as a stopcock valve. The control structure is , a valve actuator mounted on a bearing 114 integrally formed with a shoulder screw 116. A lever 112 is provided. Attached to the outer end of arm 112 by bolt 126 Air or pneumatic series coupled to arm 112 via shaft 124 connected to As the lever arm 112 rotates due to the biasing force of the driver 122, the drive gear 118 and driven gear 120 rotate. The shaft 124 has a circular arc shape on the side plate 62. through the slot 128 so that the shaft 124 is connected to the air cylinder 122. It moves together with the cylinder 122 as it extends or retreats.

Thus, in response to fingertip control 34 (FIG. 1), air cylinder 122 is activated. When the arm of the shaft 124 is extended, the shaft 124 moves the arm 112 in one direction; Rotate wheel 118 in one direction. This allows gear 120 and mastic The flow control stopcock valve 76 is rotated to a certain position. air cylinder 1 22 retracts its arm, the process is reversed and valve 76 is rotated to the opposite position. This causes the mastic flow control valve 76 to adjust depending on the position of the air cylinder arm. to open and close.

Two O-rings 130 seal the opening 131 at the end of the valve 76, and the mastic seals the opening 131 at the end of the valve 76. This prevents the nozzle 74 from escaping into the head 42.

The tape control and advancement mechanisms were attached to hub devices 136 and 138, respectively. It starts working with two rubber pinch rollers 132, 134. /%bu136 is , attached to shaft 140, while hub 138 is attached to shaft 142. Can be attached. These shafts and hubs are secured by suitable bearings and associated equipment. Rotatably supported. The tape passes between pinch rollers 132, 134 and , has two opposing guide slots 152, 154 for the tape to pass through. The tape passes through the tape guides 148 and 150. Tape coming out of slot 152, 154 passes through slot 156 in the metal inlet block.

The guillotine cutter blade 160 is connected to the cutter actuator arm by the pin 170. Cutter blade holder having a pair of upright ears 164, 166 coupled to 168 162. The actuator arm 168 includes a pair of brackets. 172.174 to a pneumatic or air cylinder 175 fixed in place. Therefore, it is controlled.

The anvil 176 is moved when the guillotine cutter blade 160 ascends and then descends. is arranged so that the tape can be sheared. Leaf spring 178 applies pressure on the anvil. , which ensures renewal due to the movement of the blade 160. air cylinder 175 normally holds the cutter blade 160 in the raised position. Press the button with your fingertip 34 (FIG. 1), the air or pneumatic cylinder 175 engages the actuator arm. The actuator arm 168 lowers the blade 160 and lowers the blade 160. disconnect the loop. Cylinder 175 then returns the blade to its starting position. Cutter The assembly is completed by attaching the cover 171 and base 173.

Plate 175 is a tape guide. Two rollers 177 and 179 guide the tape support.

Air or pneumatic cylinder 186 is connected to control the advancement of tape 38 (FIG. 1). , the rack and pinion 184 (FIG. 2) responds to the control lever 40 (FIG. 1). It is activated by The two hubs 188, 189 are tape wheel shafts 19 2, the shaft 192 also supports a creaser wheel 196. supported on the shaft 192 of the tape wheel which receives the arm 194 of the riser . The wheel 196 is particularly useful when applying tape to inside corners of dry walls. be. Movement of creaser arm 94 is controlled by creaser cable 198 and return spring. 200. While attached to the wall, the creaser's arm and car are When pressing against the center of the tape, spring 173 applies a predetermined amount of pressure to the tape. Gives enough force to move. Place the edge of the tape on the outside of the hub 188,190. There are two tape wheels 202, 204 that press into place. these two Tape wheel hub assemblies 206,208 attach the wheel onto shaft 192. hold it in place.

From the above description, the operation of the tool will be clear. Compressor 22 (Fig. 1) Activation forces pressurized mastic through hose 28 and rod 32.

Pressing the fingertip pushbutton at point 34 activates the air cylinder 122, causing the mastic to flow. Rotate the control valve 76, which causes the mastic to flow out of the outlet lower 9 and the walls. make it possible. The tape is adhered onto the drywall and the rack and binion When 184 responds to air cylinder 186, it is embedded in the mastic. air When the cylinder 186 actuates the rack and pinion 184, the pinch roller wheel The wheels 132, 134 rotate and feed the tape from its nip toward the wall.

The operator moves the rod 32 to distribute the mastic and tape onto the wall, e.g. Fill the fissure. When the operator has reached one end of the crack, press the appropriate push button (not shown). ) at point 34 (Figure 1). Air cylinder 122 rotates valve 76 and Cut off the flow of sticks. At the same time, the air cylinder 175 is activated by the guillotine type. The cutter blade 160 is moved to shear the tape.

This tool offers many advantages over other previously known tools, including: Ru.

■The operation time until loading is long. Hold no more than 10 gallons of adhesive in the cart.

2. Less operator fatigue. The taper device is lighter weight. its control equipment The position is a finger-operated air valve that requires little force.

3. All mechanical actions (tape advancement, tape cutting, and adhesive flow control) ) is carried out by actuation of a pneumatic cylinder.

4. There are no parts that the user must replace. The tape cutting and advancing mechanism is , set and maintained at the factory.

5. No special training is required for the operator. It is enough to know where the control device is located. It is.

6. Maintenance by the user is as simple as connecting the tool to the water hose and cleaning the device in the evening. It is.

Those skilled in the art will readily recognize how to modify this invention. Furthermore, the scope of the claims is: It is intended to include all equivalent constructions that fall within the true scope and spirit of the invention. should be interpreted.

Claims (14)

[Claims] 1. For large volume pneumatically controlled drywall mastic and tape applicators. and attached at one end to a rod having a tape application and mastic supply head. means provided in said head for attaching the tape and mastic to the wallboard, i.e. A power driving means for applying the power to the construction site on the surface of the drywall at the same time, and the rod-shaped body. and pneumatically control the power drive means in the supply head of the applicator. An applicator characterized by comprising: a fingertip operating means that allows 2. In the applicator according to claim 1, the Mastec is applied under pressure. means for supplying said tape to said tape application and mastic supply head; a nozzle valve for controlling the pressurized flow of the mastic, and responsive to a pneumatic cylinder; and means for controlling the operation of the valve and regulating the flow of Mastec. Applicator with characteristics. 3. The applicator according to claim 1, which can be used to apply tape and perform mass tech. Tape control and advancement mechanism provided in the supply head and supplying the tape to the desired position. A pair of pinch rollers that feed the tape and the pinch rollers are rotated to Pneumatic cylinder supplied from the head and applied to the surface of the wall plate or drywall cutter means for cutting the tape after the tape has been cut; licator. 4. The applicator according to claim 3, wherein the pinch roller is one mounted on the hub device with the tape passing through the nip between the pinch rollers. A pair of rubber rollers are provided, and the tape control and advancement mechanism is driven by a pneumatic cylinder. a rack and a rack that are driven by the An applicator characterized by having a pinion and a pinion. 5. The applicator according to claim 3, wherein the supply head is mounted on a spring-biased arm to press the loop against the corner. a creaser wheel and a tape wheel that presses the tape blade into place on the wall. An applicator characterized by comprising: and. 6. The applicator according to claim 3, wherein the cutter means is a gyro. A chin-type cutter blade, a pneumatic cylinder that controls the cutter, and a pneumatic cylinder that controls the cutter. The vertical movement of the guillotine cutter blade is controlled in response to a controlled pneumatic cylinder. An applicator characterized by comprising: means for applying. 7. The applicator according to claims 1 to 6, wherein the pneumatic pressure control Means is responsive to the fingertip control on the wand to control the applicator. An appliance characterized by having multiple pneumatic cylinders that individually control the functions of the Precator. 8. A conduit for pressurizing Mastec using the applicator according to claim 1. and an air supply for supplying pressurized air to drive a plurality of pneumatic cylinders in the supply head. and a trachea, wherein the conduit and the air tube are connected to the supply head. An app characterized in that it is connected to the other end of the rod-shaped body opposite to the end to be connected. licator. 9. The applicator according to claim 8, comprising a stopcock valve, One of the pneumatic cylinders controls the rotation of the stopcock valve and An applicator characterized in that it is part of a means for regulating the flow of the stick. 10. The applicator according to claim 8, comprising: a pair of pinch wheels; , coupled to rotate the pinch wheel and control advancement of the tape. a rack and a pinion, one of the pneumatic cylinders being connected to the rack. and an applicator, which is part of a means for actuating a pinion. 11. The applicator according to claim 8, comprising a guillotine cutter. E., one of the pneumatic cylinders is connected to the guillotine cutter to cut the tape. - An applicator characterized in that it is part of a control means for moving the blade up and down. 12. As a drywall construction tool, it can handle a large amount of drywall mastic and processing. Supply means for supplying pressurized air, tape and mastic attached to one end of the supply means a rod-shaped body having a supply head; and a rod-shaped body that connects the supply means to the supply via the rod-shaped body. means for feeding the pressurized mastic and air to the feed head; A supply tape mounted on the rod-shaped body and a dryer tape provided in the head. Multiple pneumatic cylinders to control mastic flow and tape feed to the wall and control means provided on the rod-shaped body to individually control the air cylinders; A drywall construction tool characterized by comprising: 13. The drywall construction tool according to claim 12, valve means for controlling the flow of mastic to said wall; A rack and pinion of a set of pinch rollers to be supplied, and a guiro to cut the tape. a chin type cutter, the valve means, the rack and pinion, and the cutter; the plurality of air cylinders that are individually related to each other; A dry warper further comprising means for individually controlling the cylinders. construction tools. 14. The drywall construction tool according to claim 13, Disconnecting the wall mastic supply means from the rod-shaped body and supplying the mastic. In place of the means, means are provided for connecting a source of pressurized water, whereby said pressurized water the rod by flowing water from a source through the rod and the feed head. A drywall construction tool characterized in that the body and supply head are cleaned.