A method of generating a building assembly that includes spraying a coating material onto a plurality of pieces of substrate disposed on a first assembly face. The spraying includes spraying the coating material onto the plurality of pieces of substrate via a sprayer configured to apply the coating material to a target surface via a nozzle coupled with a mobile storage container storing the coating material, the coating material impregnating voids of the substrate. The method also includes allowing the coating material impregnating the voids to dry and harden and become rigid to generate the building assembly.

A method of generating a building assembly that includes spraying a coating material onto a plurality of pieces of substrate disposed on a first assembly face. The spraying includes spraying the coating material onto the plurality of pieces of substrate via a sprayer configured to apply the coating material to a target surface via a nozzle coupled with a mobile storage container storing the coating material, the coating material impregnating voids of the substrate. The method also includes allowing the coating material impregnating the voids to dry and harden and become rigid to generate the building assembly.

A material sprayer includes a hopper module and a power module. The power module is mountable and dismountable from the hopper module. The hopper module includes a hopper frame and a hopper supported by the hopper frame. The power module includes a drive and a pump connected to and configured to be powered by the drive. The pump interfaces with the hopper with the power module mounted on the hopper frame such that the pump can draw material from the hopper.

To provide a surface treatment device having improved treatment quality of surface treatment using a foamable material, a surface treatment device includes, a moving body which can move along a surface of a processed object, a first spray device which is provided on the moving body and sprays a first material Sf having foamability on the surface of the processed object, and a second spray device which is provided on the moving body and sprays a second material Sc for covering the surface of the first material on a area of the surface of the processed object after spraying the first material from the first spray device and the first material is foamed.

To provide a surface treatment device having improved treatment quality of surface treatment using a foamable material, a surface treatment device includes, a moving body which can move along a surface of a processed object, a first spray device which is provided on the moving body and sprays a first material Sf having foamability on the surface of the processed object, and a second spray device which is provided on the moving body and sprays a second material Sc for covering the surface of the first material on a area of the surface of the processed object after spraying the first material from the first spray device and the first material is foamed.

A system and method of wall painting includes a wall painting machine, a calibratable print head, and a control terminal. The wall painting machine includes more than one print head, wherein each print head includes a plurality of nozzles, and printing positions are adjacent to each other. Among the multiple nozzles of each two print heads, there are nozzles with overlapping print positions, and the nozzles of the print heads can be set to be turned on or off. A method for calibrating a print head includes displaying a calibration interface of a wall painting machine. The calibration interface includes setting options for setting the nozzles of each print head to be turned on or off. Based on the setting operation of the setting options, each print head is turned on. A nozzle for controlling the wall painting is turned on by each print head, and color blocks printed by each print head on the wall are used to set the nozzle to on or off.

A system and method of wall painting includes a wall painting machine, a calibratable print head, and a control terminal. The wall painting machine includes more than one print head, wherein each print head includes a plurality of nozzles, and printing positions are adjacent to each other. Among the multiple nozzles of each two print heads, there are nozzles with overlapping print positions, and the nozzles of the print heads can be set to be turned on or off. A method for calibrating a print head includes displaying a calibration interface of a wall painting machine. The calibration interface includes setting options for setting the nozzles of each print head to be turned on or off. Based on the setting operation of the setting options, each print head is turned on. A nozzle for controlling the wall painting is turned on by each print head, and color blocks printed by each print head on the wall are used to set the nozzle to on or off.

An improved gooseneck used for filling drywall mud from a pump to an automatic taping machine that allows the drywaller to attach a garden hose to the gooseneck to deliver water to the taping machine's interior cavity during cleanup. In one embodiment, the improved gooseneck includes an upper pump plate with an inlet port with internal threads compatible with a standard threaded male hose connector. In a second embodiment, a standard gooseneck is used with an adapter plate configured to be disposed between the gooseneck's upper pump plate and the pump's outlet port. The adapter plate includes a two connector bores and a center entrance port with internal threads compatible with a standard threaded male hose connector. When assembled, the connector bores and entrance port are axially aligned with connector holes or slots and input port on upper pump plate. Also disclosed is a method for cleaning the taping machine's interior cavity using one of the two embodiments and a garden hose that dispenses water used to clean the taping machine.

An improved gooseneck used for filling drywall mud from a pump to an automatic taping machine that allows the drywaller to attach a garden hose to the gooseneck to deliver water to the taping machine's interior cavity during cleanup. In one embodiment, the improved gooseneck includes an upper pump plate with an inlet port with internal threads compatible with a standard threaded male hose connector. In a second embodiment, a standard gooseneck is used with an adapter plate configured to be disposed between the gooseneck's upper pump plate and the pump's outlet port. The adapter plate includes a two connector bores and a center entrance port with internal threads compatible with a standard threaded male hose connector. When assembled, the connector bores and entrance port are axially aligned with connector holes or slots and input port on upper pump plate. Also disclosed is a method for cleaning the taping machine's interior cavity using one of the two embodiments and a garden hose that dispenses water used to clean the taping machine.