paint spray gun

Abstract

A paint spray gun (100, 200), comprising: a paint spray gun body (10); a digital unit (20, 120, 220) with a display (21, 121, 221); an operating sensor (40) configured to detect at least one measured operating value for operating the digital unit (20, 120, 220); wherein the digital unit (20, 120, 220) is configured to manipulate a content of the display (21, 121, 221) based on the at least one detected measured operating value.

Description

The invention relates to a paint gun, the use of a digital unit having a display in such a paint gun, the use of at least one of a pressure sensor and an operating sensor in such a paint gun, and a digital unit having a display, each with efficient operability.Paint guns are fundamentally known in the prior art and are used, for example, in the motor vehicle workshop sector for painting cars. Paint guns serve to atomize and apply flowable material to a surface. The material to be applied can be either liquid or powder. Paint guns often have pressure sensors, in particular analog or digital pressure sensors. In the course of painting operations, increased demands are made on productivity while at the same time having high quality. For this purpose, the pressure must be monitored by the user.In this connection, it has now been found that there is a further need to provide a paint gun, in particular there is a need to provide a paint gun with efficient operability.These and other objects, which will be mentioned or can be recognized by the skilled person upon reading the following description, are achieved by the subject matter of the independent claims. The dependent claims further develop the central idea of the present invention in a particularly advantageous manner.According to a first aspect of the present invention, a paint gun is provided, comprising: a paint gun body, a digital unit having a display, an operator sensor which is configured to capture at least one operator control measurement value for the operation of the digital unit, wherein the digital unit is configured to carry out a manipulation of a content of the display on the basis of the at least one captured operator control measurement value.According to a second aspect of the present invention, a digital unit having a display is provided, comprising an operator sensor which is configured to capture at least one operator measurement value for the operation of the digital unit, wherein the digital unit is configured to carry out a manipulation of a content of the display on the basis of the at least one captured operator measurement value.The following statements may apply to the paint gun according to the invention and to the digital unit according to the invention. The digital unit according to the invention can be used together with the paint gun according to the invention.The term "paint gun" means in particular a hand-guided paint discharge unit with a trigger handle for actuating a valve, which is configured to release a paint stream. The terms "paint gun", "paint nozzle" or other names containing the terms "paint" or "paint" are not to be understood here as limiting these materials. The paint gun according to the invention can be used to spray paint, adhesive or paint, in particular base and clear lacquer, both on a solvent basis and on a water basis, and also liquids for the food industry, wood preservatives or other liquids. The stated paint gun can be, in addition to a hand-guided paint gun, an automatic or robot gun. Hand-guided paint guns are used primarily by workers, in particular painters, screons and painters. Automatic and robot guns are generally used in conjunction with a painting robot or a painting machine for industrial applications. However, it is quite conceivable to also integrate a hand spray gun into a painting robot or into a painting machine. In particular, a paint gun according to the invention, which is designed as a hand-guided paint gun, can be designed as a flow cup gun with a paint cup arranged above the paint gun body, from which the material to be sprayed flows substantially by gravity and by reduced pressure at the front end of the paint nozzle into and through the paint channels. The paint gun according to the invention can, however, also be a side cup gun in which the paint cup is arranged laterally on the paint gun body and in which the material is likewise supplied to the gun by gravity and by reduced pressure at the front end of the material nozzle. The paint gun according to the invention can, however, also be designed as a suction or suspended cup gun with a paint cup arranged below the paint gun body, from which the material to be sprayed is sucked out of the cup substantially by reduced pressure. Furthermore, it can be designed as a pressurized-cup gun, in which the cup is arranged below, above or laterally on the paint gun body and is pressurized, whereupon the material to be sprayed is forced out of the cup. Furthermore, it can be a boiler gun in which the material to be sprayed is supplied to the spray gun by means of a hose from a paint container or via a pump. The paint gun according to the invention can be a low-pressure gun, in particular an HVLP gun, with an internal nozzle pressure of at most 10 psi or 0.7 bar, whereby transfer rates of more than 65% are achieved. However, it may also be a compliant gun that has an internal nozzle pressure of greater than 10 psi or 0.7 bar, but also achieves a transfer rate of greater than 65%. It may be a compressed air atomizing paint gun. It may be an air-assisted paint gun. It may be an airless gun. This can be a paint gun for powder coating. It may be an electrostatic gun. It may be a rotary atomizer. However, it can also be a different type of paint gun.The term "paint gun body" means in particular a housing which is configured to arrange the components of a paint gun relative to one another and at least partially enclose them. The paint gun body has in particular a handle piece. The paint gun can have a compressed air connection, a paint needle, a trigger for opening an air valve and for moving the paint needle out of the outlet opening of the paint nozzle, a round broad jet regulating device for adjusting the ratio of atomizing air and horn air for shaping the paint jet, an air micrometer for adjusting the injection pressure, a material quantity regulating device for adjusting the maximum material volume flow, a material connection, paint channels for conducting the material to be injected from a material inlet to the material outlet opening, a suspension hook and / or an analog or digital pressure measuring device. However, it can also have further components from the prior art. In or on the paint gun body, in particular a needle valve for paint application and optionally an air valve for compressed air release, a compressed air connection and a paint connection are arranged. Furthermore, a paint nozzle body is arranged in particular on the paint gun body. The paint gun body has in particular an interface for the paint nozzle body and the paint nozzle body has a corresponding interface. The interfaces are in particular designed as threads. The paint gun body may be made of plastic or metal.The term "digital unit" means in particular a digital computing unit which is configured to process signals transmitted by sensors (e.g. pressure sensor, temperature sensor, humidity sensor, light sensor) and to determine or calculate a physical variable (e.g. pressure, temperature, humidity, lux) therefrom. The digital unit can furthermore have interfaces for transmitting data or signals, a memory and / or an energy supply. The digital unit is, for example, a microcontroller, a processor, an arithmetic logic unit, a digital signal processor, a system on chip, or a programmable logic unit. The digital unit is a unit which is configured to react to commands and to execute them in a specific manner. The digital unit is programmable in particular. The digital unit may have a display for displaying the determined physical variable. The digital unit can be operated in particular via a gesture control. The display can be manipulated using gesture control.The display may be arranged on the digital unit. The display can be arranged away from the digital unit and can be connected to the digital unit wirelessly or by cable.The display can be an LCD display, in particular a ZBD LCD display, an OLED display, a TFT display, an e-paper display, a mixture of different typesThe term "operator control sensor" means in particular a sensor for detecting an operator control measured value, with the aid of which a user can operate the digital unit. The operating sensor is, for example, an acceleration sensor, a position sensor, an inclination sensor, a gyro sensor and / or a light sensor. The operating sensor is in particular connected directly or indirectly rigidly to the paint gun. The operating sensor is arranged, for example, on the paint gun body. The operating sensor has a data interface to the digital unit. The operator sensor is configured, for example, to detect a movement of the paint gun. The movement comprises, for example, a tilting process of the paint gun. The operating sensor is arranged, for example, in or on the digital unit.The term "operating measured value" means in particular a measured value of a sensor, with the aid of which an operator can operate or control the digital unit. The operator control measurement value can comprise, for example, an acceleration and / or an inclination position (e.g. a jerklike movement of the paint gun by the user). The inclination can be understood in particular as being a leftward inclination, a rightward inclination, an upward inclination and / or a downward inclination. The terms "tilt", "swing" and / or "tilt" may be used interchangeably herein. The control measurement value can comprise a movement sequence and / or a gesture, e.g. the movement of the paint gun in a circle, in particular along an imaginary vertical or an imaginary horizontal "O"s, "X"s or "L"s. The control measurement value can be a light signal or the absence of a light signal. In particular, an operator can operate or control the digital unit by placing at least a part of his hand on at least a part of the digital unit. An operation measurement value may include a combination of the foregoing. Different control measured values can result in different events, in particular different manipulations.The term "manipulating" means in particular a change of a content of the display of the digital unit. This may be, for example, navigating within a menu on the display. This can be a change in the representation of a measured value, for example an enlargement of the writing or the selection of a unit. Manipulating can also comprise, in particular, operating the digital unit.The invention is based on the finding that the measurement of physical variables (e.g. pressure) in or on the paint gun is necessary. Furthermore, the representation of the physical variable is of high relevance to the user. Different requirements are placed on the display. The requirements can change during the painting operations. For this reason, a possibility of a manipulation of the display during operation of the paint gun during a painting operation is expedient. For example, the physical quantity may have to be displayed in another unit or the display of an inclination of the paint gun may be necessary. For example, a new limit value for the physical variable may have to be predefined. In order to design these manipulation(s) as simply as possible without having to suspend the painting process for too long, in particular without having to manipulate the paint gun, the invention proposes to enable the manipulation of the display by a gesture movement. For this purpose, the paint gun detects an operator control measured value, for example, via a so-called operator sensor, if, for example, a user wishes to enlarge the font size. For this purpose, it then tilts the paint gun at a specific angle of inclination, for example 45° or 90°, with respect to a normal orientation. The operating sensor, for example a gyro sensor with a built-in gyroscope, detects this inclination and transmits it in the form of a signal to the digital unit. The digital unit processes the received signal. For this purpose, for example, the signal is compared with a reference table and the display is modified accordingly in accordance with the deposit in the reference table. This allows the user to manipulate the display with only one hand and an associated gesture at which he holds or guides the paint gun. This affects the operability, the efficiency and the quality of the painting process.In one embodiment, the control measured value represents at least one of the following: a position of the paint gun, a movement of the paint gun, an acceleration of the paint gun, an inclination of the paint gun, a covering of the paint gun.The position can be, in particular, a position of the paint gun in the room. The position can be, in particular, a height. The position can be in particular a relative position with respect to a starting position. The position can be detected, for example, with the aid of an acceleration sensor. The movement means in particular a gesture which is carried out with the paint gun. The movement can comprise, for example, a circular shape or an L-shape. The movement can also be any sequence of partial gestures, wherein the combination of partial gestures can be characteristic of an operating action. This is detected, for example, with a motion sensor or an acceleration sensor. The acceleration can be, for example, an excessively fast or jerk-like movement. The acceleration can be, for example, an impulse on the paint gun, for example a tapping. A single tapping or a repeated tapping can be provided. The latter has the advantage that the risk of an unintentional tap being registered as the operator control measurement value is reduced. The acceleration can be measured, for example, by means of an acceleration sensor. The inclination means in particular a deviation of the paint gun from a position with respect to one or more axes in a coordinate system. The inclination can be, for example, an inclination of the paint gun. The inclination can be measured, for example, via a gyroscope. The paint gun, in particular a part of the paint gun, in particular a part of the digital unit, can be covered, for example, by placing at least a part of the hand of a user on at least a part of the paint gun, in particular a part of the digital unit.In this way, the display of the digital unit can be manipulated without further aids by simple gestures which are carried out with the hand which guides the paint gun.A plurality of similar and / or a plurality of different sensors can be provided.It may be provided to operate the digital unit without tilting. In particular, in a state of the digital unit in which no air pressure is present, a bar symbol in the display can blink and thus signal to the user that a time window for a manipulation of the display is open. The manipulation can then take place purely by means of a different operating measured value than tilting, for example by means of an acceleration, in particular a tapping, in particular a repeated tapping.In one embodiment, the manipulation includes navigating within a menu of the display.For example, a repeated tilting of the paint gun forward or rearward can be naviged within a displayed menu. For this purpose, for example, an inclination is stored in the memory of the digital unit, which has stored an upward or downward navigation in the menu as a command. The digital unit then changes the selected menu item in accordance with the command detected.In this way, the operator can navigate through the menu in a simplified manner.In an embodiment, the manipulation includes adjusting a display area of the display.For example, the pressure reading range for a pressure sensor is switched from bar to psi. For this purpose, for example, a movement or a movement pattern is stored in the memory of the digital unit, which movement references a command which includes the change of the display range from bar to psi. The digital unit then changes the display in accordance with the detected command. A change in the display can always also be accompanied by a change in how the digital unit or the sensor detects and / or calculates physical variables. If the display is switched from psi to bar, for example, the digital unit or the sensor no longer calculates the pressure in psi but in bar.For example, the display range of the temperature for a temperature sensor is switched from ° C. to ° F.In this way, navigating within the menu of the display of the digital unit is simplified.In one embodiment, the manipulation includes setting a range of values of the display.For example, a limit value in which the pressure can be located can be adjusted. For example, for a pressure sensor, the limit value is changed from 1.5 bar to 2.5 bar to 1.5 bar to 3.0 bar. This can be done, for example, by navigating the menu with associated setting of the new limit value. Here, for example, navigation can be made in the menu by means of a detected inclination of the paint gun. Subsequently, for example, with the aid of a movement of the paint gun, the menu item "Set limit value" can be selected. Subsequently, for example, the limit value can be set again by tilting the paint gun.In this way, a value range can be set in a simplified manner.In one embodiment, the digital unit is configured to carry out the manipulation of the content of the display on the basis of the at least one detected operator control measured value and an associated detected time period.By taking into account the time interval, random or unwanted commands can be prevented or suppressed. For example, the paint gun must be tilted over a longer period of time, e.g. 3 seconds, in order to trigger an associated command for manipulation. The digital unit thus checks, in addition to the control measurement value, for example, at least the associated time period. For example, if the time period is too short, it does not execute the instruction. The desired time period, in particular the time period which is necessary to carry out the manipulation of the content of the display and / or the actual time period, in particular the time period which has currently expired and / or which part of the desired time period has currently expired, can be displayed graphically. For example, a circle can be displayed on the left side of the display and on the right side of the display, wherein the circles are connected to one another by an empty bar or by a bar with a bar in the middle. When the paint gun is tilted to the right, the bar fills from the center toward the right circle. When the bar is filled to the right circle, the target time has elapsed and manipulation of the contents of the display is performed. The running of the time period can be indicated by an acoustic signal. The expiration of the desired time interval can be confirmed by an optical and / or acoustic signal.In this way, incorrect operations can be avoided and the efficiency and operating safety of the paint gun can be increased.In an embodiment, the digital unit is configured to be activated from a sleep mode by at least one of a switch position, the operation measurement value and the pressure measurement value.The sleep mode means, in particular, a state when the paint gun is delivered. In order to activate the gesture control, it must be ended and the digital unit must, as it were, transition from the sleep mode to the operating mode. This can be effected, for example, via a switch. The switch is, for example, a pushbutton, a rocker switch, a rocker switch, a pushbutton switch, a slide switch, a latching switch or a rotary switch. The switch is, for example, a magnetic switch. The magnetic switch can be operated, for example, by removing or applying a magnet to the digital unit. The transfer of the digital unit from the sleep mode into the operating mode can take place, for example, via at least one special movement. The digital unit can also be transferred from the sleep mode into the operating mode, for example, by applying a pressure. The pressure can be, for example, the pressure in the compressed air feed and / or in the material feed to which the paint gun is connected. The presence of light can transfer the digital unit from the sleep mode into the operating mode, in particular using a light sensor. Optionally, the digital unit can also be brought into the sleep mode via the elements mentioned. In particular, the absence of light can transfer the digital unit from the operating mode into the sleep mode, in particular using a light sensor.In this way, the functionality of the digital unit can be initially started or ended in a simple manner.In one embodiment, the operator sensor is arranged on the paint gun body of the paint gun.The operating sensor is arranged, for example, on the handle. The operator sensor is arranged, for example, in the region of the interface for the paint nozzle on the paint gun body. The operator sensor can be arranged at any point of the paint gun body which is rigid and thus permits reliable information about a gesture by the operator, for example tilting of the paint gun.The operating sensor is preferably arranged in the digital unit.The digital unit is supplied with electrical energy by a battery or a rechargeable battery, preferably by a button cell.The housing of the digital unit can consist of an inner and an outer part, wherein the inner part is manufactured, in particular injection molded, from a transparent plastic, and wherein the outer part is manufactured, in particular injection molded, from a softer plastic. Preferably, the inner part is initially injection molded, which is subsequently injection molded with the softer outer part. The outer part has a window through which a part of the inner part forming the display can be seen. The housing can have a separate rear part, which has at least part of a bayonet connection, by means of which the digital unit can be connected to the paint gun body or a connecting element, which in turn is connected to the paint gun.In one embodiment, the operating sensor is at least one of the following: position sensor, motion sensor, acceleration sensor, inclination sensor, gyro sensor, light sensor.In one embodiment, the paint gun further comprises a sensor configured to determine a physical quantity within the paint gun and / or at the paint gun and to convert the physical quantity into a signal; and wherein the digital unit is configured to determine the physical quantity based on the signal and to display the determined physical quantity on the display.The term sensor means in particular a measuring device which is configured to measure a physical variable within the compressed air flow and / or in a material flow of the paint gun or at interfaces of the feed lines for material and / or compressed air for the paint gun. The signal may be analog or digital. The sensor can be arranged within the material flow in the paint gun and / or the compressed air flow in the paint gun. The sensor can be arranged in a feed line to a paint gun. An example of this is the compressed air hose to which the paint gun is connected. Another example is a hose of material that transports the paint, the hose of material being connected to the paint gun via an interface. The sensor can be arranged in the interface of the paint supply (generally the material supply) or the compressed air supply. The sensor can be arranged in the vicinity of the interface between the paint gun body and the digital unit. The sensor can be configured in particular to transmit the signal to the digital unit (for example, by cable or wirelessly, for example, via radio).In one embodiment, the sensor is one of the following: temperature sensor, pressure sensor, humidity sensor, light sensor.The pressure sensor can be in fluidic contact with the material flow or the compressed air flow, for example, via an interface, so that the pressure sensor can likewise measure the pressure without being arranged directly in the actual flow channel.In one embodiment, the pressure sensor has a separate temperature sensor.The separate temperature sensor is arranged, for example, in the paint gun body. The separate temperature sensor is arranged, for example, in the compressed air flow channel, in the paint flow channel, in an interface for the compressed air flow channel, and / or in an interface for the paint flow channel. The separate temperature sensor can provide additional temperature measurement values, which make it possible to measure the pressure or determine the pressure to a more precise extent. The separate temperature sensor can furthermore enable the detection of a temperature profile at the respective position in or on the paint gun. The separate temperature sensor is arranged, for example, in the digital unit. The separate temperature sensor may sense the temperature of the air flowing through the paint gun. The separate temperature sensor can sense the temperature of the ambient air. The separate temperature sensor can detect the temperature of the material to be sprayed flowing through the paint gun.In this way, the accuracy of the pressure measurement is increased. Furthermore, conclusions can be drawn about the operating mode of the paint gun. This can increase the efficiency of the paint gun.However, a temperature measurement value can also be detected or determined without a separate temperature sensor, in particular by the pressure sensor. Pressure sensors often detect the temperature together with a voltage applied to the sensor on the basis of a pressure in order to take the temperature into account in the pressure determination. A temperature measurement value can be determined as a byproduct of the pressure sensor and, if appropriate, output.In one embodiment, the content of the display includes at least one of the following: pressure, pressure variation, temperature, temperature variation, life time, inclination of the paint gun, and number of operations of a trigger of the paint gun.In this way, the user of the paint gun is enabled to perform status monitoring about the painting process itself. This may increase efficiency and quality in operation of the paint gun.In one embodiment, the paint gun further comprises an interface with a separable connection between the digital unit and one of the group of the following: the paint gun body, an adapter on the paint gun body, a connecting element arranged between a compressed air hose and the paint gun body, and a connecting element arranged between a material hose and the paint gun body.The term "interface" in the present case means an interface which is configured to structurally connect the digital unit to the paint gun. The interface can have a latching connection, a bayonet lock, or a plug connection, for example. The interface can, for example, furthermore be configured to provide access to the region for the pressure measurement. For this purpose, the interface has, for example, a valve which is open in the connected state. In such an example, the pressure sensor is then arranged in the digital unit. The interface can furthermore be configured to transmit signals from a pressure sensor and / or temperature sensor, which are arranged within the paint gun, to the digital unit. The interface can thus be both a structural interface for connection and an analog or digital interface for data transmission. The interface is rigidly or rigidly connected to the paint gun body or indirectly to the paint gun body.The term "adapter" in the present case means an additional device which is configured to fix the digital unit to the paint gun body. The adapter has an interface which corresponds to the paint gun or the paint gun body and an interface which corresponds to the digital unit.The term "connecting element" in the present case means a coupling which is configured to connect the compressed air hose and / or the paint supply (for example a paint hose or paint container) to the paint gun body.In this way, the interface and thus the arrangement of the digital unit can be changed or selected in accordance with the usage requirements. This can increase the efficiency of the operation of the paint gun.In one embodiment, the sensor is a pressure sensor and is arranged in the digital unit, wherein the sensor is in contact via the interface with a compressed air channel and / or a material channel for measuring the pressure prevailing within the paint gun and / or the pressure present at the paint gun, in particular the pressure of a compressed air flow and / or a material flow.In this way, the paint gun can be designed purely mechanically without electrical or mechatronic components. This can have a positive effect on maintenance and service life.The paint gun and / or the digital unit can comprise a device for detecting a paint gun and / or for detecting use of the digital unit on different paint guns. This device can comprise, for example, a position sensor, a motion sensor, an acceleration sensor, an inclination sensor, a gyroscope sensor, a light sensor, a temperature sensor, a pressure sensor or a humidity sensor. The digital unit can be configured such that, based on the data recorded by at least one sensor, it recognizes that it is used, in particular connected, with a specific paint gun and / or that it is used, in particular connected, with a different paint gun than in a previous use. The aforementioned device can be used for personalizing the paint gun and / or the digital unit. The aforementioned device can be used for determining service and / or maintenance intervals. The digital unit can be configured such that it recognizes that it has been separated from a paint gun, in particular based on the measurement data of a pressure sensor, in particular based on the fact that pressure is no longer present at the digital unit. The digital unit can be configured such that it recognizes that it has been connected to a paint gun again, in particular based on the measurement data of a pressure sensor, in particular based on the pressure again being applied to the digital unit. The digital unit can be designed in such a way that it queries to which paint gun it is connected. The selection can be made by an above-mentioned operating measured value. The device for detecting a paint gun and / or for detecting use of the digital unit on different paint guns can comprise an RFID chip and / or comprise a device for capturing data of an RFID chip. The device for detecting a paint gun and / or for detecting use of the digital unit on different paint guns can comprise at least one magnet and / or comprise a device for detecting magnetic fields. The device for detecting a paint gun and / or for detecting use of the digital unit on different paint guns can comprise at least one pin and / or a device for detecting at least one pin and / or a specific combination of pins. The device for detecting a paint gun and / or for detecting use of the digital unit on different paint guns can comprise at least one electrical resistor and / or comprise a device for determining and / or detecting at least one electrical resistor. The features mentioned in the present paragraph are also considered to be a separate invention on their own, i.e. also without the features mentioned above and below.The paint gun according to the invention or the digital unit according to the invention can be designed in such a way that, when the actuating bracket element is actuated, all values less relevant to the operation of the paint gun are masked or reduced on the display and relevant values, in particular the air pressure, are displayed in enlarged form.A further aspect relates to the use of a digital unit with display in a paint gun described in more detail above.A further aspect relates to the use of at least one of a sensor and an operating sensor in a paint gun described in more detail above.The features described above, including those from different embodiments, can also be combined with one another, as a result of which synergistic interactions can be established which go beyond the sum of the individual effects.The invention is explained below using exemplary embodiments which are described with reference to the following figures: FIG. 1 shows an exemplary paint gun according to the invention or a paint gun with an exemplary digital unit according to the invention; FIG. 2 shows a display of an exemplary paint gun according to the invention or a display of an exemplary digital unit according to the invention; and FIG. 3 shows an example gesture for changing a display of an example paint gun according to the invention or an example digital unit according to the invention.FIG. 1 shows an exemplary paint gun 100 according to the invention or a paint gun 100 with an exemplary digital unit 20 according to the invention. In the paint gun body 10 in the present case, for example, a needle valve for applying paint and for releasing compressed air is arranged. The paint gun 100 further comprises a paint nozzle body 70 (not visible in FIG. 1 ) which is detachably connected to the paint gun body 10 via a thread. The paint gun 100 further comprises an actuating bracket element 71. By actuating the actuating bracket element 71, the needle valve is actuated for paint application and compressed air release.The paint gun body 10 is also provided with the paint supply interface 60. Furthermore, the interface 61 for the compressed air supply is arranged on the paint gun body 10. Below the interface 61 for the compressed air supply, a swivel joint 63 is arranged. A compressed air carrying hose (not shown) can be connected to the swivel joint 63 at the input side 62 of the swivel joint. The paint gun 100 in the present case has a digital unit 20. The digital unit 20 is rigidly connected to the paint gun body 10 via an interface 50. The interface 50 is located above the handle 11. Alternatively, the digital unit 20 can also be arranged on the paint gun body 10 via an adapter. The adapter may include, for example, a clamping device that is clamped to the paint gun body 10. The digital unit 20 can then be connected to the adapter via a corresponding interface, for example. The digital unit 20 may alternatively be disposed on a connector (not shown) between the interface 60 and a material hose. The connecting element then has a corresponding interface for the digital unit 20. The digital unit 20 may alternatively be arranged on a connecting element (not shown) between the interface 61 and the compressed air hose. The connecting element then has a corresponding interface for the digital unit 20. The paint gun 100 has a sensor 30, in particular a pressure sensor. Alternatively or additionally to the pressure sensor, the paint gun 100 can have a temperature sensor, a moisture sensor or a light sensor. The sensor 30, in particular a pressure sensor, is configured to determine a pressure measurement value and convert it into a signal. The sensor 30, in particular the pressure sensor, is arranged in the digital unit 20 in the present case. The sensor 30, in particular the pressure sensor, measures the pressure in the compressed air flow within the paint gun 100 in the present case via a valve. The pressure sensor may alternatively be arranged directly within a compressed air flow channel. The pressure sensor may alternatively be arranged within the paint gun body. The pressure sensor can alternatively also be arranged at the interface 61 for the compressed air connection. The pressure sensor can alternatively be arranged at the interface 60 for the paint supply or material supply. The sensor 30, in particular a pressure sensor, is configured to transmit the signals to the digital unit 20. This can be done in a cable-bound or wireless manner, in particular via radio. The digital unit 20 is configured to determine the pressure based on the signal and to display it via a display 21. The display 21 is arranged on the digital unit 20.The paint gun 100 comprises an operating sensor 40. An operator control measurement value for the operation of the digital unit 20 is detected via the operator control sensor 40. The operator sensor 40 is in the present case an acceleration sensor which detects a movement of the operator. The content of the display 21 can be changed via the detected movement. For example, the pressure reading may be changed from Bar to Psi. For this purpose, the operator must, for example, execute a circular movement with the paint gun. For this purpose, the digital unit 20 has stored in a memory, for example, in a table different movement patterns with associated commands for controlling the digital unit 20. By comparing the detected movement with the stored movement patterns, the corresponding command is selected and then executed by the digital unit 20.Alternatively or additionally, the operator sensor 40 can measure a position, an acceleration, an inclination and / or a covering of the paint gun. For this purpose, the operating sensor 40 can be, in addition to the acceleration sensor, a position sensor, a motion sensor, an inclination sensor, a gyroscope sensor and / or a light sensor. The operating sensor 40 can also comprise a plurality of sensor types. Alternatively or in addition to altering the units of the display, the manipulation may comprise one or more of: navigating within a menu of the display, setting a range of values of the display. Optionally, the digital unit is configured to additionally record the time period of a recorded operator control measurement value. Depending on the detected time period, a command associated with the detected operation measurement value is executed or not. The display 21 may additionally or alternatively comprise, in addition to the pressure, the following: pressure profile, temperature, temperature profile, service life, inclination of the paint gun, number of actuations of a trigger of the paint gun.FIG. 2 shows an exemplary display 121 of a paint gun 100 according to the invention or an exemplary digital unit 120 according to the invention. A user holds the paint gun 100 in his right hand 127. The display 121 is disposed on the digital unit 120. In the present case, the paint gun 100 is arranged vertically, i.e. without inclination, in the hand 127. In the present case, the display 121 displays the temperature 122, the pressure 123, an alarm 124 for the pressure, an artificial horizon 125 for the inclination and a battery display 126.FIG. 3 shows an example gesture for changing the display 221 of the paint gun 200 or of the digital unit 220. The display 221 is in turn arranged on the digital unit 220. The hand 227 in which the paint gun 200 is arranged is inclined to the right in the present case. In the present case, the display area 228 is changed from psi to bar for the pressure measurement value by the inclination. The inclination is detected, for example, with a gyro sensor.Reference numerals denote reference numerals10 Paint gun body 11 Handle 20, 120, 220 Digital unit 21, 121, 221 Display 30 Sensor 40 Operating sensor 50 Interface 60 Interface for paint supply 61 Interface for compressed air 62 Input side of the rotary joint 63 Rotary joint 70 Paint nozzle body 71 Operating bracket element 100, 200 Paint gun 122 Temperature 123 Pressure 124 Alarm 125 Horizon 126 Battery display 127, 227 Hand 228 Display Pressure

Claims

A paint gun (100, 200) comprising: a paint gun body (10); a digital unit (20, 120, 220) having a display (21, 121, 221); an operation sensor (40) configured to acquire at least one operation measurement value for the operation of the digital unit (20, 120, 220); wherein the digital unit (20, 120, 220) is configured to perform a manipulation of a content of the display (21, 121, 221) on the basis of the at least one acquired operation measurement value.The paint gun (100, 200) of claim 1, wherein the control reading represents at least one of a position of the paint gun, a movement of the paint gun, an acceleration of the paint gun, an inclination of the paint gun, a capping of the paint gun (100, 200).The paint gun (100, 200) of claim 1 or 2, wherein the manipulation comprises navigating within a menu of the display (21, 121, 221).The paint gun (100, 200) of any preceding claim, wherein the manipulation comprises adjusting a display area of the display (21, 121, 221).The paint gun (100, 200) according to any one of the preceding claims, wherein the manipulation comprises setting a range of values of the display (21, 121, 221).The paint gun (100, 200) according to any one of the preceding claims, wherein the digital unit (20, 120, 220) is configured to perform the manipulation of the content of the display (21, 121, 221) on the basis of the at least one acquired operator control measurement value and an associated acquired time period.The paint gun (100, 200) according to any one of the preceding claims, wherein the digital unit (20, 120, 220) is configured to be activated from a sleep mode by at least one of a switch position, the operation measurement value and the pressure measurement value.The paint gun (100, 200) according to any one of the preceding claims, wherein the control sensor (40) is arranged on the paint gun body (10) of the paint gun (100, 200).Paint gun (100, 200) according to one of the preceding claims, wherein the operating sensor (40) is at least one of the following: position sensor, motion sensor, acceleration sensor, inclination sensor, gyroscope sensor and / or light sensor.The paint gun (100, 200) according to any one of the preceding claims, further comprising a sensor (30) configured to determine a physical quantity within the paint gun (100, 200) and / or at the paint gun (100, 200) and to convert the physical quantity into a signal; and wherein the digital unit (20, 120, 220) is configured to determine the physical quantity based on the signal and to display the determined physical quantity on the display (21, 121, 221).The paint gun (100, 200) of claim 10, wherein the sensor (30) is one of the following: temperature sensor, pressure sensor, humidity sensor, light sensor.The paint gun (100, 200) according to any one of the preceding claims, wherein the content of the display (21, 121, 221) comprises at least one of the following: pressure, pressure variation, temperature, temperature variation, life time, inclination of the paint gun, number of operations of a trigger of the paint gun.The paint gun (100, 200) according to any one of the preceding claims, further comprising an interface (50) with a separable connection between the digital unit (20, 120, 220) and one of the group of the following: the paint gun body (10), an adapter on the paint gun body, a connecting element arranged between a compressed air hose and the paint gun body (10), and a connecting element arranged between a material hose and the paint gun body (10).Painting gun (100, 200) according to claim 13, wherein the sensor (30) is a pressure sensor and is arranged in the digital unit (20, 120, 220) and is in contact via the interface (50) with a compressed air channel and / or a material channel for measuring the pressure prevailing within the painting gun (100, 200) and / or the pressure present at the painting gun (100, 200), in particular the pressure of a compressed air flow and / or a material flow.Use of a digital unit (20, 120, 220) with display (21, 121, 221) in a paint gun (100, 200) according to one of claims 1 to 14 and / or use of at least one of a sensor (30) and an operating sensor (40) in a paint gun (100, 200) according to one of claims 1 to 14.Digital unit (20, 120, 220) having a display (21, 121, 221), comprising: an operator sensor (40) which is configured to capture at least one operator measurement value for the operation of the digital unit (20, 120, 220); wherein the digital unit (20, 120, 220) is configured to carry out a manipulation of a content of the display (21, 121, 221) on the basis of the at least one captured operator measurement value.

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