Vacuum generator device

Abstract

The present invention proposes a vacuum generator device (1) having at least one vacuum generator unit (2), the vacuum generator unit having a working unit (12), the working unit having an ejector unit (42) for generating vacuum and a pair of ejector units (42) for applying vacuum with compressed air and a vacuum-control valve device (23). The vacuum generator unit (2) further includes a display and operation module (14), which is pivotally mounted on the working unit (12) by a pivoting device (52). The display and operation module (14) can be positioned in an initial position that at least partially obscures the working unit (12) or in a pivoted position that pivots upward away from the working unit (12). In this way, a display device (79) and an operation device (80) of the display and operation module (14) can be advantageously positioned.

Description

Technical Field

[0001] The present invention relates to a vacuum generator device. - having at least one vacuum generator unit extending in a main direction along a main axis, in a height direction along a height axis perpendicular to a pair of main axes, and in a transverse direction along a transverse axis perpendicular to both the main axis and the height axis, - having two axial ends running in opposite directions in the main direction, one upper side in the height direction and a pair of lower sides in opposite directions in the height direction, - The vacuum generator unit comprises a working unit, which comprises an ejector unit through which compressed air flows to generate a vacuum which can be taken out at a vacuum access port of the working unit, and an electrically triggered vacuum-control valve device for controlling the ejection of compressed air from the ejector unit required for this purpose. - The vacuum generator unit has a display and operating module which, when it adopts a basic position, extends on the upper side of the vacuum generator unit in the main direction along the working unit and which, in the basic position, has a display device for visualizing status information and an operating device for manually entering and / or querying operating parameters on a functional side facing upwards from the working unit. Prior Art

[0002] The vacuum generator device disclosed in EP 2 300 721 B1 comprises a working unit having an air ejector unit and a vacuum control valve device for operating the air ejector unit. The compressed air ejected by the vacuum control valve device into the air ejector unit creates a vacuum in a suction zone, which can be accessed through a vacuum access port constructed outside the vacuum generator unit. This vacuum can be used to operate, for example, a suction gripper. A display and operating module, referred to as a contact unit, is fixed to the working unit and extends along its upper side. On an upward-facing functional side, it has an LCD display that displays various operating states and a keyboard-like input device for manual adjustment of the internal control electronics. The contact unit is inserted above the working unit and serves as a communication interface for at least one plug-in device, which is located on the vacuum control valve device.

[0003] DE 10 2004 031 924 A1 describes a vacuum generator device having a plurality of vacuum generator units, designated as air jets, which are fixed together on a receiving device. On the top side of each vacuum generator unit are various buttons and a plurality of displays for inputting and visualizing operating parameters.

[0004] DE 10 2007 058 114 A1 discloses a vacuum generator device comprising a vacuum generator unit, an ejector unit, and a control valve for activating the ejector unit. The vacuum generator unit further comprises a control device for electrically controlling the control valve. Summary of the Invention

[0005] The object of the present invention is to provide a vacuum generator device with measures to provide comfortable operation while maintaining a compact size.

[0006] This object is achieved in the vacuum generator device of the aforementioned characteristics in that the display and operating module is pivotally mounted on the working unit by a pivot device so that it can be positioned in a basic position or at least in a pivot position pivoted upward from the working unit via a modular pivoting movement that can be performed about a pivot center.

[0007] The vacuum generator device of the present invention comprises one or more vacuum generator units that generate a vacuum based on the suction nozzle principle, which is then accessed through a vacuum access port. At least one of the vacuum generator units includes an air ejector unit through which compressed air flows to generate the vacuum. The air ejector unit and an electrically actuable vacuum control valve assembly are components of a structural group known as a working unit. The vacuum control valve assembly controls the compressed air ejection required for vacuum generation by the air ejector unit. The vacuum generator unit also includes a display and operating module. During normal use of the vacuum generator device, the vacuum generator unit assumes a basic position on the upper side of the vacuum generator unit, in which it covers the working unit along at least a portion of its length in one main direction. On a functional side remote from the working unit, the display and operating module includes a display device for visualizing status information and an operating device for manually inputting and / or querying operating parameters. Because the display and operating module extends along the upper side of the working unit in a direction orthogonal to a pair of main directions, the vacuum generator unit can be constructed with a compact length while ensuring comfortable operation. The information displayed on the display device can be clearly read, and the operating devices are easily accessible. Another advantage lies in the pivotability of the display and operating module. When necessary, it can be at least temporarily pivoted out of its basic position into a pivoted position facing upward from the working unit. This can be done, for example, to facilitate operation and viewing of the functional side equipped with the display and operating devices, and / or to make areas of the working unit obscured by the display and operating module in the basic position more accessible without having to remove the display and operating module from the working unit. This pivoting movement of the module can, for example, make display and / or operating elements of the working unit that may be obscured by the display and operating module in the basic position accessible, and / or meet the prerequisites for easy assembly and disassembly of the vacuum control valve device without being obstructed by the display and operating module or even requiring the display and operating module to be removed from the working unit. The display and operating module can be moved into a pivoted position at any time and can also be pivoted back to its basic position on the working unit before pivoting.

[0008] Advantageous further improvements are described in the accompanying patent applications.

[0009] The display and operating module is advantageously releasably fixed in its basic position, non-pivotable, via a latching and operating unit. Preferably, a latching connection is provided, which automatically activates due to a certain elasticity when the display and operating module is pivoted into the basic position, producing a releasable latching action. The latching connection is particularly designed so that, due to the certain elasticity, it automatically releases the latch when a manual pivoting force is applied to the display and operating module. This latching option ensures that the basic position is reliably maintained even when the vacuum generator device is mounted horizontally or facing downward on its upper side in the installed position.

[0010] The pivoting device is particularly designed so that the module pivoting movement of the display and operating module takes place in a pivoting plane which is parallel both to the main axis and to the height axis of the vacuum generator unit.

[0011] The pivoting device is preferably designed so that the pivot center of the module's pivoting movement is defined by a pivot axis extending transversely to the vacuum generator unit. Advantageously, the pivot axis is arranged in directions perpendicular to the transverse axis so as to be stationary and non-variable relative to the working unit. This allows for particularly accurate and desired positioning of the display and operating module.

[0012] In principle, the display and operating module can be integrally connected to the operating unit, while the pivoting device has a flexurally resilient, solid connection that defines the pivot center. A preferred design ensures simple manufacturing and long life, in which the display and operating module is a separate component from the operating unit, and the pivoting device has at least one pivot shaft that defines the pivot axis and via which the display and operating module is pivotably coupled to the operating unit.

[0013] The at least one pivot axis is advantageously a separate entity from the display and operating module and / or the working unit.

[0014] The at least one pivot axis system, such as a pivot pin fixed to the working unit, is entirely or partially pivotally enclosed by the display and operating module. If it is partially enclosed, the pivot device is implemented so that the display and operating module can be buckled onto the pivot pin.

[0015] The pivot device has, for example, one pivot shaft body, or a plurality of, in particular two, pivot shaft bodies.

[0016] The pivoting device is advantageously located in the region of the two axial ends of the at least one vacuum generator unit. The pivoting center of the module is thus located at one of the two axial ends of the vacuum generator unit. In conjunction with a pivot axis parallel to the transverse axis of the vacuum generator unit, the display and operating module can be pivoted into a pivoted position that allows unobstructed access from above to the area of ​​the largest operating unit.

[0017] It is particularly advantageous if the pivoting center and the vacuum access port are located at opposite axial ends of the working unit. In this case, the vacuum access port is located in a region of one of the two axial ends of the working unit that faces the axial end of the vacuum generator unit, where the pivoting device is located. This allows the display and operating module to be used and operated at the maximum distance from the vacuum access port, reducing the risk of damage when, for example, a suction gripper is attached to the vacuum access port.

[0018] The display and operating module is advantageously shorter than the working unit and, in its basic position, extends only a portion of the length of the working unit in the main direction. Consequently, in the basic position of the display and operating module, only a portion of the length of the working unit adjacent to the pivot center is obscured by the display and operating module, which portion is shorter than the total length of the working unit. Consequently, in the basic position of the display and operating module, a portion of the outer surface of the working unit facing the same direction as the functional side of the display and operating module can be used to form a display and / or operating element that is easily accessible at all times.

[0019] The pivoting device is preferably located on the upper side of the vacuum generator unit, with the pivoting center at least substantially flush with the upwardly facing upper outer surface of the operating unit in the height direction of the vacuum generator unit. This allows the display and operating module to be pivoted out of its basic position without, or only minimally, extending the vacuum generator unit. This facilitates the accommodation of the vacuum generator device within confined spaces. A particular advantage lies in combining this design with a construction in which the pivoting device is located in the region of one of the two axial end faces of the vacuum generator unit.

[0020] Advantageously, the display and operating module can be pivoted from its basic position to at least an upright pivot position, which is pivoted 90 degrees upward relative to its basic position. The functional side of the display and operating module is pivoted 90 degrees in the main direction about a pivot axis parallel to the transverse axis of the vacuum generator device. The pivoting device can be designed such that the maximum pivoting angle of the display and operating module is limited to 90 degrees, but a larger pivoting angle can also be readily accommodated.

[0021] In the transverse direction of the vacuum generator unit, the display and operating module advantageously has the same width as the vacuum control valve assembly. Thus, in its basic position, the vacuum control valve assembly covers the entire length of the display and operating module. This allows the display and operating module to be equipped with an easily readable display and easily actuated operating devices without increasing the overall width of the vacuum generator unit beyond the width of the vacuum control valve assembly.

[0022] To provide the vacuum-controlled valve device with the necessary electrical control signals, in particular for applying or removing a trigger voltage, the operating unit advantageously includes a communication structure within it that is electrically connected to the vacuum-controlled valve device and is connected or at least connectable to an electrical control unit. The electrical control unit can be an integral component of the vacuum generator device or an external unit. The communication structure advantageously includes an interface for connecting to an internal or external electrical control unit, which provides an electrical control signal to control the vacuum-controlled valve device. Preferably, the electrical connection between the communication structure and the display and operating module is established via a flexible conductor path, particularly one extending within the vacuum generator unit and deformable during the module's pivoting motion. Thus, when the module is pivoted, the conductor path does not need to be separated from the display and operating module, that is, from the display device to the operating device. The flexible conductor path can extend over its entire length or only over a portion of its length in the region of the pivoting device. The flexible conductor path is preferably designed as a flexible ribbon cable.

[0023] The display and operating module preferably comprises a module housing including at least one module plate, which at least partially supports a display device and an operating device. The module housing is preferably at least partially transparent on the functional side, so that information visualized by the internal display device is visible from the outside. The module housing may also have a wall perforation on the functional side for operating elements of the operating device. The aforementioned flexible and resilient conductor circuit is preferably connected to the module plate, preferably via a plug-in connection, to electrically connect the display device and the operating device.

[0024] In a suitable design of the vacuum generator device, at least one, but preferably each, vacuum generator unit has, in its upper region, an upper outer surface formed on the working unit, which is at least partially concealed in the basic position of the display and operating module. In the region concealed by the display and operating module, at least one manually activatable operating element and / or at least one display element is arranged. In at least one pivoted position of the display and operating module, which is pivoted and raised from the basic position, the corresponding operating and / or display element is accessible from the upper side of the vacuum generator unit. Thus, a user of the vacuum generator device can use the display and operating module of the working unit, except when the display and operating module is temporarily inaccessible by bringing it into a corresponding pivoted position.

[0025] At least one operating element and / or at least one display element of the working unit is, in particular, a component of the vacuum control valve assembly. In particular, the at least one operating element may be a manually activated, hand-assisted operating device of the vacuum control valve assembly, which allows manual activation of the vacuum control valve assembly without an electrical control signal, for example, for adjustment or testing purposes. The at least one display element of the vacuum control valve assembly, for example, a status display element, visualizes the actual operating state of the vacuum control valve assembly, in particular the valve position.

[0026] In one advantageous embodiment, the operating unit of at least one vacuum generator unit comprises a base unit, which includes an air injector unit and has a valve layout formed on the outside, to which a vacuum control valve assembly is removably secured. The removable nature of the vacuum control valve assembly facilitates assembly and disassembly from the base unit as required. The vacuum control valve assembly is preferably secured to the base unit via a screw connection.

[0027] The display and operating module is pivotally mounted on the base unit in such a manner that, in its basic position, it at least partially conceals the vacuum control valve assembly mounted on the valve structure. During the module's pivoting movement, the display and operating module can be moved into at least one pivot position, in which the vacuum control valve assembly is freed from overlap, facilitating unimpeded assembly and disassembly of the vacuum control valve assembly, in particular from the upper side of the vacuum generator unit.

[0028] The base unit advantageously has a valve accommodating area that is open at least to the upper side of the vacuum generator unit. The area is bounded on one side by a valve panel and houses the assembled vacuum control valve assembly in whole or in part. The valve accommodating area is bounded in one region of one of the two axial ends of the vacuum generator unit by a module carrier section of the base unit that carries the display and operating module. The display and operating module is pivotally mounted on the module carrier section via a pivoting device. If the module carrier section is present, the aforementioned flexible and resilient conductors can extend through it. For this purpose, the module carrier section is at least partially hollow. The pivot center defined by the pivoting device in cooperation with the module carrier section is advantageously located in the main direction, at a distance from the vacuum control valve assembly, so that the vacuum control valve assembly is completely unobstructed from its upper side in the vertical direction when the display and operating module is at least in a 90-degree pivoted position.

[0029] An advantageous configuration of the vacuum generator device comprises, in at least one vacuum generator unit, a base unit comprising a main body with a valve surface and a silencer housing adjoining the main body at a junction region and containing a silencer. The silencer housing is preferably constructed on the main body in the main direction. An ejector unit extends within the main body for at least a portion of its length and comprises an ejector nozzle, a catch nozzle, and an ejection region disposed between the ejector nozzle and the catch nozzle. The ejector unit is preferably aligned with an ejector longitudinal axis parallel to the main axis. The ejector unit can, in principle, be completely housed within the main body, but preferably extends through the junction region, being housed partially within the main body and partially within the silencer housing. The ejector nozzle is connected to a vacuum control valve device mounted on the valve surface via an air inlet channel constructed in the main body, so that the vacuum control valve device can control the pressurization of the air channel with compressed air to generate a vacuum. The suction area of ​​the ejector unit is fluidically connected via a vacuum channel to a vacuum access opening formed on an outer vacuum access surface of the base unit. For example, a suction gripper for handling purposes or another device capable of applying a vacuum can be connected to the vacuum access opening. The capture nozzle is connected to an air outlet channel that runs through the silencer housing and the silencer therein. The compressed air required for generating the vacuum is discharged into the environment as exhaust air via the air outlet channel. For this purpose, an air outlet is provided on the silencer housing on the air outlet surface. The vacuum access opening is preferably oriented in the main direction, while the air outlet is advantageously oriented at right angles thereto, particularly in the height direction.

[0030] The module carrier segment of the basic unit is advantageously fastened to the base body as a separate component, in particular by means of a screw connection. The base body is advantageously located between the silencer housing and the module carrier segment in the main direction. The silencer housing is also advantageously fastened to the base body by means of a screw connection.

[0031] At least one vacuum generator unit is preferably equipped with a release mechanism capable of quickly releasing the negative pressure generated in the vacuum channel when necessary. This allows objects held by a suction gripper connected to the vacuum access port to be quickly set down or discarded when necessary. The release mechanism specifically includes an air channel communicating with the vacuum channel and capable of pressurizing the vacuum channel when necessary. This pressurization is controlled by a vacuum-control valve assembly.

[0032] In operation, the active air injection into the vacuum channel is generally carried out in a pulsed manner with a very short overpressure pulse, hereinafter also referred to as a release pulse, because it helps to release an object held by the suction gripper.

[0033] A throttling point is preferably inserted into the air passageway, comprising a throttling element that changes the flow cross-section, typically designed as a throttling screw. This throttling screw has an operating section that can represent the operating element of the aforementioned working unit. The throttling element adjusts the intensity of the release pulse to allow for individual handling of the objects held by the suction gripper.

[0034] Advantageously, the air pressure flowing through the vacuum access port can be monitored. For this purpose, the vacuum access port is advantageously connected to a sensor channel that leads to a pressure sensor housed within the working unit, thereby enabling the air pressure flowing through the vacuum access port to be monitored. The pressure sensor is particularly useful for monitoring the desired negative pressure at a vacuum access port. For connection to the vacuum access port, the sensor channel is preferably connected to the aforementioned vacuum channel, with the same flow pressure as the vacuum access port. The pressure sensor is advantageously housed in the base body of the aforementioned working unit.

[0035] The pressure sensor is advantageously mounted on a circuit board, also referred to below as a sensor board, which is fixed to the base body. An analysis circuit can be provided on the sensor board to analyze the pressure value sensed by the pressure sensor and take appropriate measures based on the result, such as automatically activating or deactivating the pressure supply to the air inlet channel to conserve air. Diagnostic functions can also be incorporated into the analysis circuit. The analysis circuit is preferably connected to the aforementioned electronic control unit via the sensor board, particularly via the internal communication structure of the aforementioned working unit.

[0036] The vacuum control valve assembly of at least one vacuum generator unit is configured to control the compressed air injection to the associated ejector unit. Specifically, it is configured to selectively allow compressed air to enter the ejector unit's ejection nozzle or to stop the compressed air supply. Optionally, the vacuum control valve assembly can provide an exhaust function for the ejector unit, particularly in applications where a separate air passage is not available.

[0037] The controlled compressed air supply to the air sparger unit and the optional air channel is coordinated with one another. The vacuum control valve arrangement can be designed, for example, as a 3 / 3-way valve, which has a blocking position as a further switching position, in which neither the air sparger unit nor the air channel is supplied with compressed air.

[0038] The vacuum-controlled valve device is in particular an electrically piloted directional valve.

[0039] In one possible design, the vacuum generator device consists of a single vacuum generator unit, making it a stand-alone vacuum generator device. A contrasting design is a vacuum generator device comprising multiple vacuum generator units, forming a vacuum generator group and mechanically connected to each other to enable consistent operation. The multiple vacuum generator units are closely arranged in an arrangement direction orthogonal to their main direction and are directly or indirectly mechanically connected to each other, for example, via multiple tension rods. This connection is particularly releasable. A common irrigation channel traverses the working units of the closely arranged vacuum generator units in the arrangement direction. This irrigation channel is connected to an external compressed air source, referred to as the group irrigation channel. Each vacuum generator unit is connected to a vacuum control valve assembly to control the injection of compressed air from the ejector unit and selectively supply the compressed air required by the air channel.

[0040] To handle multiple control tasks, a vacuum generator group can include not only a vacuum generator unit as a functional unit but also one or more valve units. These valve units are not used for vacuum generation, but rather for pneumatically controlling a pneumatic actuator, such as a linear actuator activated by compressed air. These valve units can be arranged closely together with the vacuum generator units in a group or in any desired arrangement order.

[0041] To control the multiple vacuum-control valve devices included in the vacuum generator group, it is advantageous if an electrical communication line runs through the vacuum generator units in the direction of arrangement, electrically connecting each vacuum generator unit to its vacuum-control valve device and the display and operation module. The communication line performs the aforementioned communication structure function within each vacuum generator unit. Simple diagram description

[0042] The present invention will be further described below with reference to the accompanying drawings. FIG1 is a perspective view of a preferred embodiment of the vacuum generator device according to the invention, advantageously in the form of a vacuum generator group, wherein the display and operating module is shown in its basic position and an operating suction gripper is shown schematically. FIG2 is a top view of a vacuum generator device in FIG1, wherein the visual direction is along the arrow II in FIG1. FIG3 is another perspective view of the vacuum generator device in FIG1 and FIG2 as seen from a different perspective in FIG1, FIG4 is a perspective view of the vacuum generator device of FIG1 to 3, wherein the display and operating module of a vacuum generator unit is in a pivoted position pivoted out of the basic position, shown as a 90-degree pivoted position, FIG5 shows a cross-sectional view of the vacuum generator device of FIG1 to FIG4 in the region of a vacuum generator unit along the tangent line VV of FIG2, wherein the vacuum generator device and the operating module are shown in the basic position and a vacuum control valve device is only indicated by symbols. FIG6 is a cross-sectional view similar to FIG5, but showing the vacuum-control valve assembly removed and raised from a valve layout, and ... Figures 7-9 are individual three-dimensional views of the vacuum generator units included in a vacuum generator group in Figures 1 to 4, wherein Figure 7 shows the assembled vacuum generator unit and the display and operation module in the basic position similar to Figure 5, while Figure 8 shows the assembled vacuum generator unit and the display and operation module pivoted 90 degrees upward, and Figure 9 shows the vacuum generator unit in a disassembled state, wherein the display and operation module is pivoted 90 degrees, and the vacuum-control valve device is removed from a basic unit. Implementation Method

[0043] 1 to 4 show a vacuum generator device 1 having a plurality of vacuum generator units 2 , while one of the vacuum generator units 2 is shown alone in FIGS. 5 to 9 .

[0044] The vacuum generator unit 2 can generate a vacuum, also known as negative pressure, independently of the other vacuum generator units 2 , which can be taken out at a vacuum access port 3 accessible from the outside for any purpose.

[0045] The vacuum generator device 1 preferably provides an operating suction gripper 4, one of which is shown in FIG. 1 , which can be releasably connected to each vacuum access opening 3 via a suction line 5. With the aid of the suction gripper 4, an object 6, such as a workpiece, can be temporarily gripped for its operating purpose, in particular by displacement by vacuum. The suction gripper 4 comprises, for example, one or more suction cups. To grip and hold an object 6, the suction gripper 4, which is in contact with the object 6 with a suction opening, is evacuated by the aforementioned vacuum, which generates a suction flow 7 indicated by the arrow. When the object 6 is released, the vacuum can be released and the suction gripper 4 can be purged with atmospheric pressure or pressurized air. The functions involved here are also provided by the vacuum generator unit 2.

[0046] In an embodiment not shown, the vacuum generator device 1 includes only one vacuum generator unit 2. In the preferred embodiment shown, the vacuum generator unit 2 comprises multiple vacuum generator units 2, which are mechanically connected to form a group that can operate as a whole. This allows the vacuum generator device 1 to be designated as a vacuum generator group 1a. The multiple vacuum generator units 2 can operate independently of each other.

[0047] Within the vacuum generator group 1a, the vacuum generator units 2 are closely spaced side-by-side in the arrangement direction 8 indicated by a dotted-bar line and mechanically connected to one another. For mechanical connection, a plurality of rod-shaped tension rods 11 are provided, for example, extending through the closely spaced vacuum generator units 2 in the arrangement direction 8 and, in particular, releasably clamping them together. Alternatively, the vacuum generator units 2 can be fixed to adjacent vacuum generator units 2 using fixing screws or assembled independently of one another on a common vacuum unit carrier, for example, a plate-shaped vacuum unit carrier.

[0048] The preferred embodiment of the vacuum generator group 1a shown comprises a functional unit consisting exclusively of a vacuum generator unit 2. In an embodiment not shown, the vacuum generator group 1a also comprises other functional units, in particular one or more valve units suitable for pneumatically controlled pneumatic actuators.

[0049] The vacuum generator group 1a advantageously has two end modules 18a, 18b, which are arranged on opposite ends of the vacuum generator unit 2 in the arrangement direction 8 and are advantageously also fixed by a tension rod 11 or other fixing means.

[0050] An electronic control unit 21 is advantageously provided for controlling the vacuum generator unit 2. This unit, for example, is an external control unit connected to an electromechanical interface 20 of the vacuum generator group 1a, such as the first end module 18a of the two end modules 18a, 18b. The electromechanical interface 20 can be designed as a multiplex interface for parallel signal transmission or as a field bus interface for serial signal transmission.

[0051] In addition to or instead of the external electronic control unit 21 , the vacuum generator group 1 a may have an internal electronic control unit and / or an internal field bus communication unit.

[0052] Each vacuum generator unit 2 is capable of controlling a compressed air flow, which is necessary for generating a vacuum and, when necessary, operating the suction gripper 4. This compressed air is supplied to each vacuum generator unit 2 via a structural group-filling channel 22, which passes through all vacuum generator units 2 in the arrangement direction 8 and opens, for example, at a connection opening 22a on the first end module 18a. This opening is connected to an external compressed air source P during the operation of the vacuum generator 1.

[0053] In the vacuum generator unit 2 , a group-filling channel 22 is constructed to communicate with an electrically triggered control valve device 23 belonging to each vacuum generator unit 2 , hereinafter also referred to as a vacuum-control valve device 23 .

[0054] The closely arranged vacuum generator units 2 are preferably also penetrated by at least one common exhaust channel 24 for exhaust, preferably in the arrangement direction 8, and are referred to as a structural group exhaust channel 24, which may be present in duplicate. The at least one structural group exhaust channel 24 is connected to the atmosphere via an exhaust opening 24a, for example, provided externally on the first end module 18a.

[0055] However, at least one component group, the exhaust channel 24, is, for example, non-functional. For this purpose, the interior of the vacuum generator unit 2 is designed such that, for example, no fluid connection exists between the at least one component group, the exhaust channel 24, and the vacuum control valve device 23, as can be clearly seen in FIG5 . However, it is also possible to provide such an internal fluid connection within the vacuum generator unit 2 if such a function is desired.

[0056] If the vacuum generator group 1a also includes one or more valve units suitable for pneumatically controlling a pneumatic actuator as described above, at least one structural group-exhaust channel can be used for common exhaust of the valve units.

[0057] The structural group of infusion channels 22 and at least one optional structural group of exhaust channels 24 are each composed of closely spaced channel segments, which are designed as through-channels in the respective vacuum generator units 2. Sealing two adjacent vacuum generator units 2 provides a seal in the channel area, which is not shown in detail.

[0058] The vacuum generator group 1a advantageously includes an electrical communication line 25 extending in the arrangement direction 8 through all functional units 12. This line includes the aforementioned electrical interface 20 and, within each vacuum generator unit 2, a communication structure 25a electrically connected to the associated vacuum control valve device 23. In this manner, the vacuum control valve device 23 receives the electrical control signals necessary for its operation from the electronic control unit 21. The communication line 25 extends through a cavity, designated as a communication channel 29, which extends through the entire vacuum generator unit and is formed by closely spaced channel sections of each vacuum generator unit 2.

[0059] The communication circuit 25 includes multiple communication structures 25a, each located within a vacuum generator unit 2. For example, the communication circuit 25 is implemented by a printed circuit board assembly consisting of the printed circuit boards of each vacuum generator unit 2. When the vacuum generator units 2 are placed in close proximity, they are electrically plugged together to form a structural group of printed circuit board assemblies, thereby electrically and mechanically connecting them to each other. Each printed circuit board thus constitutes a communication structure 25a. Alternatively, the printed circuit board assembly can also consist of a single, continuous, and particularly integral printed circuit board, with longitudinal sections of this continuous printed circuit board constituting individual communication structures 25a. In particular, when the vacuum generator device 1 consists of only a single vacuum generator unit 2, the communication structure 25a can be configured, for example, as a separate electrical and mechanical interface element, allowing for a cable connection to an external electronic control unit 21.

[0060] 5 to 9 , a preferred embodiment of the vacuum generator unit 2 will be described. The described structure can be appropriately applied to all vacuum generator units 2 of the vacuum generator group 1 a.

[0061] The vacuum generator unit 2 has a virtual main axis 26 indicated by a dotted line, the direction of which is referred to as the main direction 26a. The dimension of the vacuum generator unit 2 in the main direction 26a defines its structural length.

[0062] The vacuum generator unit 2 further has a pair of height axes 27 orthogonal to the main axis 26, the axis direction of which is marked as the height direction 27a, and the dimension of the vacuum generator unit 2 in the height direction 27a defines its structural height.

[0063] Finally, the vacuum generator unit 2 has a pair of main axes 26 and a virtual transverse axis 28 perpendicular to the height axis 27. The direction of these axes defines a transverse direction 28a. The transverse dimension of the vacuum generator unit 2 defines its structural width. In Figure 3, transverse axis 28 is perpendicular to the drawing plane.

[0064] The vacuum generator unit 2 has two axial ends 44a and 44b, oriented in opposite directions in the main direction 26a, hereinafter designated as the front end 44a and the rear end 44b for easier identification. The vacuum generator unit 2 also has an upper side 44c in the height direction 27a and a lower side 44d opposite the upper side 44c. In a typical orientation, when the vacuum generator device 1 is in operation, the upper side 44c faces vertically upward. However, the vacuum generator device 1 can operate in essentially any orientation with respect to the four aforementioned sides 44a-44d.

[0065] The vacuum generator unit 2 is preferably designed in a plate-like manner, as can be seen from the embodiment shown. In the embodiment, the overall length is greater than the overall height, which in turn is greater than the overall width. A main extension surface of the plate-like vacuum generator unit 2 is perpendicular to the transverse axis 28. The vacuum generator units 2 are arranged parallel to one another on their main extension surfaces.

[0066] The vacuum generator unit 2 is constructed in multiple parts. It comprises a working unit 12, which in turn is composed of two lower units: a vacuum control valve device 23 and a base unit 13 carrying the vacuum control valve device 23. Furthermore, it has a display and operating module 14 mounted on the base unit 13.

[0067] A receiving chamber 38 extending in the main direction 26a is formed in the base unit 13, hereinafter referred to as the injector receiving chamber 38, in which an injector unit 42 with a longitudinal extension is accommodated. The injector unit 42 has an injector longitudinal axis 43, which is preferably parallel to the main axis 26.

[0068] In order to produce the vacuum that can be taken at the vacuum access port 3, the injector unit 42 can be passed by compressed air. The compressed air jet required for this purpose can be controlled by the vacuum-control valve device 23.

[0069] In a preferred embodiment of an exemplary embodiment, the base unit 13 comprises a base body 31 and a silencer housing 32, preferably made of plastic, fixed to the base body 31 in a connection region 34. The silencer housing 32 preferably follows the base body 31 in the main direction 26a, for example, at the front end 44a. The base body 31 can be made of plastic or metal, for example, and is advantageously manufactured in one piece. The silencer housing 32 accommodates a silencer 33.

[0070] The fixing device 37 provides a preferably releasable mechanical connection between the silencer housing 32 and the base body 31. For example, the fixing device 37 comprises at least one fixing screw 37a, which passes through the silencer housing 32 in the main direction 26a and supports the silencer housing 32 with a screw head and is locked into the base body 31 with a threaded rod.

[0071] The ejector unit 42 includes an ejection nozzle 45 axially penetrated by an ejection nozzle passage 45a, and a catcher nozzle 46 adjacent thereto at an axial distance and axially penetrated by a catcher nozzle passage 46a. The axial distance between the ejection nozzle 45 and the catcher nozzle 46 defines a suction zone 47. The ejection nozzle 45 and the catcher nozzle 46 are surrounded by sealing rings 48a and 48b, which seal the ejector unit 42 from the surrounding walls of the ejector-accommodating chamber 38, thereby separating an air inlet zone 49 upstream of the ejection nozzle 45 and an air outlet zone 50 downstream of the catcher nozzle 46 from the suction zone 47 in a fluid-tight manner.

[0072] The injector unit 42 advantageously extends partly in the base body 31 and partly in the silencer housing 32 and passes through the joining region 34. However, it can also be completely accommodated in the base body 31 or in the silencer housing 32.

[0073] The emission nozzle channel 45a is continuously fluidically connected to an air blowing channel 54 extending in the base body 31. The specific implementation method is that the air blowing channel 54 opens into the air inlet area 49.

[0074] The air blowing channel 54 passes through the base 31 and opens through a first channel outlet 55 to a valve layout surface 56 of a basic unit 13 formed on the base 31, for example. The vacuum-control valve device 23 is assembled on this surface and is connected to the air blowing channel 54 through the first channel outlet 55.

[0075] The aforementioned structural group-injection channel 22 also opens at the valve layout surface 56 with a second channel outlet 57, which is fluidically connected to the vacuum-valve control device 23. In a vacuum generator device 1 composed of a single vacuum generator unit 2, the compressed air source P can be directly connected to the vacuum-control valve device 23 outside the base body 31.

[0076] The valve fabric surface 56 is constructed, for example, on an upper side of the base body 31 facing the upper side 44c of the vacuum generator unit 2. It extends in particular on at least one plane orthogonal to the height axis 27 and can be stepped.

[0077] The base unit 13 advantageously delimits a valve receiving area 15 which is open at least to the upper side 44c of the vacuum generator unit 2, is delimited on the lower side by a valve arrangement surface 56 facing the upper side 44c, and accommodates the assembled vacuum valve control device 23 therein.

[0078] The valve accommodating area 15 is limited towards the front end side 44a by the silencer housing 32 protruding upward from the base body 31 and towards the rear end side 44b by a basic unit 13 which carries the display and operating module 14 and also protrudes in height from the base body 31 and is partially limited as a module carrier section 16.

[0079] In the illustrated embodiment, the module carrier segment 16 is preferably fixed to the base body 31 as a separate component. The base body 31 is advantageously positioned between the silencer housing 32 and the module carrier segment 16 in the main direction 26a. For example, the base body 31 has a mounting surface 35 on its rear side, opposite the connection area 34 in the main direction 26a, to which the module carrier segment 16, having a mounting surface 36 formed on its upper side, is fixed. This, in particular, releasable fixing is achieved via a module carrier fixing device 39, which comprises, for example, at least one fixing screw 39a, which passes through the module carrier segment 16 in the main direction 26a, is supported on the module carrier segment 16 by its screw head, and is locked into the base body 31 by a screw.

[0080] The module carrier-fixing device 39 , for example, in addition to the at least one fixing screw 39 a , additionally includes a hook-shaped structure 39 b spaced apart from the at least one fixing screw 39 a in the height direction 27 a for firmly fixing the module carrier segment 16 and the base 31 .

[0081] The module carrier segment 16 has a longitudinal shape and is, for example, a strip-shaped structure. It is fixed to the base body 31 in such a way that the module carrier longitudinal axis 51 is parallel to the height axis 27 and ends in the region of the upper side 44c with an end segment, designated as module carrier end segment 16a, which projects upwards beyond the valve layout surface 56.

[0082] The vacuum control valve device 23 has a lower valve surface 66 that faces the valve fabric surface 56 when assembled and fixed on the valve fabric surface 56, and an upper valve surface 67 that faces the valve fabric surface 56 in the height direction 27. The upper valve surface 67 is a portion of the upper outer surface 68 of the working unit 13 located in the area of ​​the upper side 44c of the vacuum generator unit 2, and also includes, for example, the air outlet surface 61 of the muffler housing 32, which is adjacent to the upper valve surface 67 in the main direction 26a.

[0083] Advantageously, there is a sealing device (not shown) between the lower valve surface 66 and the valve cloth construction surface 56.

[0084] The vacuum control valve assembly 23 is releasably fixed to the valve structure 56 by a valve fixing device 30. This fixing is preferably achieved by a screw connection. For example, the valve fixing device 30 includes two fixing screws 30a and 30b, which extend through the vacuum control valve assembly 23 along the height direction 27a at positions spaced apart from each other in the main direction 26a. Each screw head is supported on the upper valve surface 67 and is locked into the base body 31 by a screw rod protruding from the lower valve surface 66.

[0085] The compressed air jet from the air-injection channel 54 can be controlled by the vacuum-control valve device 23. Thus, the vacuum-control valve device 23 can be switched to a vacuum position "VS," in which it connects the construction group-injection channel 22 and the air-injection channel 54, injecting compressed air into the emission nozzle channel 45a of the emission nozzle 45. Furthermore, the vacuum-control valve device 23 can also be advantageously switched to a blocking position "AS," in which the air-injection channel 54 is disconnected from the construction group-injection channel 22 and, therefore, from the compressed air source P.

[0086] Starting from the air discharge area 50 at the outflow outlet of the capture nozzle channel 46a away from the emission nozzle 45, an air blowing channel 58 is connected, which passes through the silencer housing 32 and the silencer 33 located therein, and flows out to the environment through an air outlet 62 on the outer surface of the silencer housing 32 marked as the air outflow surface 61.

[0087] The air outlet surface 61, together with the air outlet 62, is preferably formed on the muffler housing 32 in an orientation perpendicular to the main axis 26. Preferably, and according to the illustrated embodiment, the air outlet surface 61, like the air outlet 62 formed therein, faces in the height direction 27a and advantageously faces upward. The air outlet surface 61, like the air outlet 62, is particularly arranged on the upper side 44c of the vacuum generator unit 2. The air outlet surface 61 advantageously extends in a plane perpendicular to the height axis 27a.

[0088] A vacuum channel 63 is formed within the vacuum generator unit 2 and extends between the suction zone 47 and the vacuum access opening 3. The vacuum access opening 3 opens onto an outer surface of the muffler housing 32, referred to as the vacuum access surface 64, preferably located on the front end 44a. The vacuum access opening 3, like the vacuum access surface 64, is generally oriented in the main direction 26a.

[0089] The vacuum access port 3 is equipped with a connecting device 65, which allows a suction line 5 to be connected in a releasable manner, for example, by an internal thread. As the connecting device 65, for example, a pipe plug connector can also be provided.

[0090] The above description clearly shows that there is a 90-degree angle between the vacuum access port 3 and the air outlet 62. This has the effect that the suction process occurring near the vacuum access port 3 is not hindered by the exhaust gas blown out of the air outlet 62. In particular, very light objects to be processed will not be accidentally blown away.

[0091] The vacuum channel 63 extends through the silencer housing 32 in the main direction 26a, in particular in a linear manner.

[0092] The air ejector unit 42 operates according to the conventional principle of a projectile nozzle. Compressed air injected into the projectile nozzle 45 of the air ejector unit 42 flows through the air ejector unit 42 and creates a negative pressure in the suction zone 47, generating the aforementioned suction flow 7. This allows vacuum to be applied to the vacuum access port 3 and evacuates a connected suction gripper 4 to grip an object 6.

[0093] The air outlet duct 58 in the silencer housing 32 preferably has a 90-degree bend in order to guide the compressed air emitted by the ejector unit 42 in the main direction 26a to the air outlet 62 transverse to the main direction 26a. The air outlet duct 58 passes through the silencer 33, which is preferably constructed as a so-called open silencer, and is completely axially penetrated by the air outlet duct 58.

[0094] For example, within the muffler housing 32, there is an interlaced region 74 in which the air outlet channel 58 and the vacuum channel 63 intersect, but are not fluidically connected. Advantageously, the vacuum channel 63 branches within the muffler housing 32 into two channel branches spaced apart from each other in the transverse direction 28a, with the two branches passing through the air outlet channel 58 on opposite sides in the transverse direction 28a. At a first channel branching point, the suction flow 7 is split into two partial flows, each of which flows through one of the two channel branches. The two partial flows then merge again at a second channel branching point.

[0095] Vacuum generation occurs continuously as long as the vacuum-control valve device 23 produces a blown airflow 77 that passes through the injector unit 42 , is indicated by an arrow and flows from the air flow outlet 62 . Preferably, an active check valve piece 78 is provided in the vacuum channel 63 to close the vacuum channel 63 between the suction zone 47 and the vacuum access port 3 when the blowing air flow 77 is interrupted so that the vacuum on the vacuum access port 3 is blocked and no gas passes through the injector unit 42 . This produces a solstice effect, which is due to the need only occasionally to compensate for the leakage by blowing airflow 77 to maintain the desired vacuum. Only when the air pressure in the suction zone 47 is less than the air pressure in the vacuum access port 3 , the check valve member 78 allows air airflow to flow in the direction of the suction zone 47 . If the air pressure of the suction zone 47 is greater than the air pressure of the vacuum access port 3 , the check valve member 78 takes the closed position to close the vacuum channel 63 .

[0096] In embodiments, the check valve member 78 is provided in an engagement zone 34 between the matrix 31 and the silencer 32 , is clamped between the matrix 31 and the silencer 32 , and thus is properly held. The check valve piece 78 prefers a rotatable check valve.

[0097] The vacuum generator unit 2 advantageously provides a vacuum present on the vacuum access port 3 that can be removed at each arbitrary point in time, such as lowering or discarding an object 6 previously clamped by one by means of a suction clamp 4 again. In the absence of a check valve piece 78 , this can be achieved simply by switching the vacuum-control valve device 23 to the blocking position "AS" to block the compressed air from continuing to perfuse air into the channel 54 .

[0098] Advantageously, the vacuum generator unit 2 provides the possibility of applying overpressure to the inflatable vacuum access port 3 by pulse, such that the vacuum present is suddenly relieved by a release pulse, enabling rapid discarding of an object 6 that has been sucked. The embodiment shown has the equipment to generate this one release pulse.

[0099] The preceding release pulse-equipped comprising an air channel 81 constructed in the base unit 13 connected to a vacuum-control valve device 23 via a third channel outlet 82 constructed on the vacuum layout surface 56 on the other hand and in fluid connection with the vacuum channel 63 on the other hand.

[0100] The vacuum control valve device 23 can be preferably switched to a third valve position, designated as the ventilation position "BS." In this position, the air channel 81, blocked by the other two valve positions, is connected to the construction group filling channel 22 and is injected with compressed air. This generates an air flow 41 in the air channel 81 that flows out of the vacuum access port 3, creating an overpressure in the vacuum access port 3 and releasing the vacuum previously generated in the connected suction gripper 4.

[0101] The ventilation position "BS" is usually used only briefly, so that the resulting overpressure is only a short-term release pulse. However, the air jet can also be used for a longer period, for example, to clean a discarded object 6 with compressed air and remove adhering dirt. In principle, the air jet and ventilation position "BS" can be maintained for any length of time.

[0102] The release pulse arrangement advantageously provides the possibility of adjusting the intensity of the release pulse. To this end, a throttle point 84 is provided in the air duct 81 to create a flow restriction. The throttle point 84 comprises an adjustable throttle element 85, particularly a throttle screw, disposed within the silencer housing 32. The throttle element 85 is accessible from outside the vacuum generator unit 2 for adjustment and, for example, comprises an actuation section 86 disposed in the area of ​​the air outlet surface 61, providing for manual actuation and / or actuation using a tool.

[0103] The vacuum generator unit 2 is advantageously equipped with a pressure sensor 87 that can sense the air pressure generated at the vacuum access port 3 and, in particular, can sense a negative pressure.

[0104] The pressure sensor 87 is advantageously located within the base unit 13, and in particular within the base body 31. The pressure sensor 87 is in fluid communication with a sensor channel 88 formed within the base unit 13, which is fluidically connected to the vacuum channel 63, so that the pressure therein can be accessed to act on the pressure sensor 87. The sensor channel 88 extends, for example, through the junction area 34 and partially within the base body 31 and partially within the muffler housing 32.

[0105] The pressure sensor 87 is preferably disposed on a sensor plate 91 mounted within the base 31, for example, by being placed from the bottom side 44d into a plate receptacle 92 formed within the base 31. The sensor plate 91 is electrically connected to a communication structure 25a also disposed within the base 31 via a contact device 89, allowing an electrical signal based on the value sensed by the pressure sensor 87 to be transmitted to the electronic control unit 21. The electrical signal is typically related to the valve position or other parameters of the vacuum control valve device 23. In other words, the electrical signal can be either a raw measurement value from the pressure sensor 87 or an electronically analyzed value derived from this raw measurement value.

[0106] The sensor board 91 preferably includes an evaluation circuit that analyzes the measured values ​​of the pressure sensor 87 in order to influence the electronic control of the vacuum control valve device 23 based on the results. For example, the evaluation circuit can also be located only partially on the sensor board 91, with another portion located on or in the communication structure 25a. In this case, the evaluation and signal processing portion is located on the sensor board 91 and the portion is located on or in the communication structure 25a.

[0107] The vacuum control valve assembly 23 is advantageously of an electrically pre-controlled type and includes, for example, a main valve 93 that allows the three valve positions "VS," "AS," and "BS" described above, and a pre-control valve assembly 94 that forms a structural unit with the main valve 93. The pre-control valve assembly 94 is electrically connected to the communication structure 25a via an electrical contact 95 and is electrically activated by a control signal from the electrical control unit 21. The pre-control valve assembly 94 can pneumatically activate the main valve 93 to adjust it to one of the three valve positions "VS," "AS," and "BS." The compressed air required for this is supplied to the pre-control valve assembly 94 via a pre-control priming channel 96 within the base body 31, via the main valve 93. The pre-control priming channel 96 advantageously passes through all vacuum generator units 2 in the vacuum valve group 1a and is connected to a connection opening 96a formed in the second end module 18b, to which a control pressure source PS can be connected.

[0108] Advantageously, there is a pre-control exhaust channel 97 through the vacuum generator unit 2 for the common exhaust of the pre-control valve devices 94 of all vacuum generator units 2, which are connected via the main valve 93 and lead to an exhaust opening 97a formed on the second end module 18b, which leads to the atmosphere RS.

[0109] Each pre-control valve device 94 comprises, for example, two electrically triggerable pre-control valves 94a, 94b to form a structural unit, which are advantageously solenoid valves.

[0110] The pilot valve assembly 94 is advantageously located on one of the two axial ends of the main valve 93. For example, the vacuum control valve assembly 23 is oriented so that the pilot valve assembly 94 faces the module carrier section 16. The upper valve face 67 is formed by an upper main valve face section 67a formed on the main valve 93 and an upper pilot valve face section 67b formed on the pilot valve assembly 94 in the main direction 26a. The two fixing screws 30a, 30b preferably extend through the main valve 93.

[0111] The vacuum-controlled valve arrangement 23 is advantageously equipped with two manually assisted triggering devices 69a, 69b, which allow purely manual triggering of the vacuum-controlled valve arrangement without the need for an electrical control signal. The two manually assisted triggering devices 69a, 69b are preferably each assigned to one of the two pilot valves 94a, 94b, allowing manual triggering of the pilot valves 94a, 94b to switch the main valve 93 to a desired valve position.

[0112] Each hand-assisted triggering device 69a, 69b has a manual triggering element 70, and these two triggering elements 70 are arranged on the upper valve surface 67 and in particular on the upper pilot valve surface section 67b. The triggering elements 70 can thus be contacted essentially from the upper side 44c of the vacuum generator unit 2.

[0113] Preferably, at least two display elements 71 are located on the upper valve face 67. These display elements 71 at least partially function as status indicators for the vacuum control device 23 and can visualize one or more of the aforementioned valve positions. The display elements 71 are preferably configured as optical display elements. For example, they are formed from the upper end sections of a plurality of optical conductors 72, which extend through the pre-control valve device 94 and lead to a light-emitting diode device 73, which is a component of the communication structure 25a. The light signals emitted by the light-emitting diode device 73 are guided via the optical conductors 72 to the display elements 71 and emitted there.

[0114] Different numbers of trigger elements 70 and display elements 71 can also be provided according to the design of the vacuum control device 23. In addition, as an alternative or additional option to the above-described configuration, trigger elements and / or display elements for other purposes can be provided on the upper outer surface 68.

[0115] The aforementioned display and operating module 14 is pivotally mounted on the operating unit 12. It can assume a basic position, as shown in Figures 1 to 3, 5, and 7, in which it extends along the operating unit 12 in the main direction 26a in the region of the upper side 44c of the vacuum generator unit 2. The pivotable mounting is achieved by a pivot device 52, which advantageously takes place, according to the illustrated embodiment, on the module carrier section 16, particularly in the upper module carrier end section 16a. Accordingly, the pivot device 52 is located in the region of one of the two axial end sides 44a, 44b of the vacuum generator unit 2, in the exemplary embodiment, the rear end side 44b, and also in the region of the upper side 44c of the vacuum generator unit 2.

[0116] Considering the preferred design of the vacuum control valve device 23 shown, the pivoting device 52 is adjacent to the pilot valve device 94 in the main direction 26a, while the pivot center 53 for the display and operating module 14, designated as module pivoting movement 59, is located at least substantially and preferably at the same height in the height direction 27a as a surface segment of the upper outer surface 68 of the adjacent working unit 12. This surface segment is, for example, the pilot valve surface segment 67b. The module pivoting movement 59 is represented by a double arrow in Figures 1, 3, 4, and 5.

[0117] During the module pivoting movement 59 , the display and operating module 14 pivots relative to the working unit 12 on a pivoting plane 10 parallel to a pair of main axes 26 and a height axis 27 .

[0118] Considering that the vacuum access opening is located at the front end side 44a, the pivot center 53 of the module pivoting movement 59 and the vacuum access opening 3 are arranged at axial end sides 44a, 44b of the vacuum generator unit 2 that are opposite to each other in the main direction 26a.

[0119] The display and operating module 14 has a longitudinal configuration, indicated by a dotted line and designated as the module longitudinal axis 60. In the basic position of the display and operating module 14, the module longitudinal axis 60 is advantageously at least substantially parallel to the main axis 26 of the vacuum generator unit 2. The display and operating module 14 extends from the rear end side 44b to the opposite front end side 44a. While it is generally possible for the overall length of the display and operating module 14, measured along the module longitudinal axis 60, to extend in the basic position beyond the total length of the operating unit 12, it is considered particularly advantageous, according to the exemplary embodiment, to achieve a shorter overall length, such that in its basic position, the display and operating module 14 extends only a portion of the length of the operating unit 12.

[0120] The overall length of the display and operating module 14 is preferably selected such that the vacuum control valve arrangement 23 is concealed in the main direction 26a along only a portion of its longitudinal length by the display and operating module 14. For example, in the basic position, the display and operating module 14 extends over the entire longitudinal section of the pilot valve arrangement 94 and an adjacent main valve 93.

[0121] The display and operating module 14 therefore advantageously covers only a longitudinal section of the working unit 12 adjacent to the pivot center 53 , which is shorter than the entire length of the working unit 12 .

[0122] As is clearly shown in FIG. 5 , the pivot center 53 is advantageously arranged at a distance from the vacuum-control valve arrangement 23 in the main direction 26 a.

[0123] In its basic position, the longitudinal side of the display and operating module 14 is oriented perpendicular to the module's longitudinal axis 60 and faces upward in the height direction 27a away from the work unit 12. This will hereinafter be referred to as the functional unit 75 of the display and operating module 14. This functional unit 75 includes a display device 79 for visualizing status information regarding the vacuum generator unit 2 and an operating device 80 for manually inputting and / or querying operating parameters of the vacuum generator unit 2. Both devices 79 and 80 are clearly visible and accessible from the upper side 44C in the basic position of the display and operating module 14.

[0124] The display and operating module 14 is electrically connected to the communication structure 25a within the vacuum generator unit 2. Specifically, this electrical connection is achieved on the display and operating module 14 side by means of electrical and / or electronic components 83 connected to the display device 79 and the operating device 80. These components are arranged on a module board 90, which is located within the module housing 100 of the display and operating module 14.

[0125] The electronic components 83 provided for implementing the display device 79 include, for example, a plurality of light-emitting diodes (LEDs) 79a. Thus, the display device 79 is a light-emitting diode display device. The display device 79 is particularly designed as an alphanumeric display for status information. Information displayed includes, for example, the actual vacuum value sensed by the pressure sensor 87, the desired target vacuum value, the switching point of the vacuum control valve device 23, hysteresis, error diagnostics, or similar information.

[0126] Operating parameters, such as the target vacuum value or switching point of the vacuum control valve device 23, can be adjusted via operating device 80. Preferences can be entered via a menu-guided menu. Display device 79 is also configured to visualize the various menu items. Manual activation of operating device 80 can also advantageously enable active query of the selected settings or operating parameters—particularly while still menu-guided.

[0127] For example, the module housing 100 is transparent on the functional side 75 at least in the area of ​​the display device 79, so that the visual display values ​​can be read. To this end, the at least partially transparent window-like hollow module housing 100 area 76 is implemented, for example, by a plastic component of the module housing 100 having appropriate light-transmitting properties.

[0128] The window region 76 can be formed of an opaque film having a segmented thin wall that can be penetrated by the light of the LED 79a. The thin wall region can be transparent or semi-transparent.

[0129] In addition to the aforementioned module board 90 component 83, the operating device 80 may also include, for example, one or more operating keys 80a located on the module board 90 and protruding through a through-hole in the wall of the module housing 100 in the area of ​​the functional side 75, allowing them to be operated with a single finger. For example, three operating keys are available, including two arrow keys and a setting key. These operating keys 80a are preferably implemented as components of a rubber elastic switching pad.

[0130] The pivoting device 52 allows the display and operating module 14 to be pivoted from a basic position to at least one pivot position upwardly remote from the working unit 12 and back again to the basic position within the framework of a module pivoting movement 59. When the vacuum generator device 1 is in use, the display and operating module 14 can thus be positioned in the basic position or in at least one position remote from the upper outer surface 68, referred to as the pivot position.

[0131] The design preference of the pivoting device 52 mechanically provides a maximum pivoting angle for the module pivoting movement 59 .

[0132] The display and operating module 14 is advantageously releasably fixed in at least one pivot position by means of a snap-fit. This snap-fitting can occur in a plurality of pivot positions. However, the display and operating module 14 is preferably releasably fixed in a precise pivot position by means of a snap-fit. The fixed pivot position, and in particular the single fixed pivot position, is particularly a 90-degree pivot position, as described below.

[0133] There is also a possible design in which the display and operating module 14 can be positioned arbitrarily within the maximum pivot range, for example by friction clamping.

[0134] A preferred pivot position of the display and operating module 14 is shown in Figures 4, 6, 8, and 9. This is an upright pivot position in which the display and operating module 14 is pivoted 90 degrees upward relative to the basic position, hereinafter also referred to as the 90-degree pivot position. The module longitudinal axis 60 extends, in particular, orthogonally to the main axis 26.

[0135] The pivotability of the display and operating module 14 allows the functional side 75 to be oriented differently, allowing the display device 79 and the operating device 80 to be positioned in a manner that is advantageous for the current situation. For example, the display device 79 is particularly easy to read from the rear end 44b when it is pivoted 90 degrees.

[0136] Furthermore, the display-and operating module 14 can be pivoted away from the upper valve face 67 by means of a module pivoting movement 59 so that the trigger element 70 located there can be directly contacted for manual activation and / or the display element 71 also located there can be directly read.

[0137] Rotating the display and operating module 14 out of the basic position, in particular to a pivoted position of at least 90 degrees, allows the vacuum control valve device 23 shown in Figures 6 and 9 to be assembled and disassembled, since the overlap of the vacuum control valve device 23 in the basic position is released. In particular, a linear assembly and disassembly movement 102 of the vacuum control valve device 23 in the height direction 27a, indicated by a double arrow in Figures 6 and 9, is possible, so that the vacuum control valve device 23 can be lifted from the valve structure surface 56 or fixed to the valve structure surface 56 after the valve fixing device 30 is released.

[0138] Since each communication structure 25 a in a vacuum generator group 1 a belongs to an electrical communication line 25 , the display-and-operation modules 14 of all vacuum generator units 2 are electrically connected to the communication line 25 and ultimately to the electronic control unit 21 .

[0139] The display and operating module 14 advantageously has the same width in the transverse direction 28a as the vacuum control valve device 23, so that the upper outer surface 68 of the working unit 12 is completely covered by the entire length of the display and operating module 14 in the basic position of the display and operating module 14, at least in the area of ​​the vacuum control valve device 23.

[0140] The pivot center 53 of the module pivoting movement 59 is advantageously defined by a pivot axis 103 extending in the transverse direction 28a of the vacuum generator unit 2. This is the case, for example, if the pivot device 52 is also designed such that the pivot axis 103 is fixed relative to the working unit 12 in directions orthogonal to the transverse axis 28.

[0141] Unlike the embodiment shown, the pivot center 53 can be realized by an arc guide, for example, the shape is at least one arc-shaped longitudinal groove formed on the working unit 12, which functions as a slide groove, and the display-and-operation module 14 enters and slides therein with a sliding follower.

[0142] The display and operating module 14 is preferably a separate component of the operating unit 12, which is also consistent with the illustrated embodiment. The pivoting device 52 advantageously comprises at least one pivot shaft 104, which is fixed to the module carrier section 16 with a longitudinal axis parallel to the transverse direction 28a and pivotably enclosed by at least one bearing extension 105, such as that of the display and operating module 14. The bearing extension 105 is advantageously an integral section of the module housing 100 and has a through-hole through which the pivot shaft 104 extends.

[0143] At least one bearing extension 105 can be separated so that the pivot shaft 104 can be clamped on the display-and-operation module 14 in a releasable or non-releasable manner during assembly.

[0144] According to the embodiment shown, the pivot shaft 104 can be a separate component of the display and operating module 14 and the module carrier section 16 .

[0145] The pivot axis 104 can advantageously be a pivot pin according to the embodiment shown.

[0146] In an embodiment (not shown), the display and operating module 14 is provided with two flexible, resilient bearing extensions located adjacent to each other at a common distance in the axial direction of the pivot axis 103. Each bearing extension has a bearing recess, typically designed as a through-hole, that is open on the outer side facing away from the other bearing extension. The module carrier segment 16 has two pivot shafts 104, constructed as cylindrical bearing projections, each extending from the open outer side into the bearing recess of one of the two bearing extensions. To assemble the display and operating module 14, the two bearing extensions can be temporarily elastically deflected relative to each other to allow the bearing projection to engage the bearing recess.

[0147] The electrical connection between the display and operating module 14 and the communication structure 25a is advantageously represented only by a flexible, resilient conductor path 106, which is represented by a dotted line. This conductor path 106 has a first line end 107 electrically conductively fixed to the communication structure 25a and a second line end 108 electrically conductively fixed to the module board 90. The fixing is preferably achieved by a releasable plug connection.

[0148] The flexible conductive circuit 106 comprises a plurality of conductive wires, which are isolated from each other by being encased in a flexible plastic sheath. The flexible conductive circuit 106 is preferably implemented as a flexible flat cable. Alternatively, the flexible conductive circuit 106 may be composed of a plurality of individual conductive wires.

[0149] The flexural elasticity of the conductor track 106 allows an unimpeded module pivoting movement 59 , wherein the second track end 108 fixed to the display and operating module 14 participates in the module pivoting movement 59 , the conductor track 106 being at least partially elastically deformed and in particular flexed.

[0150] The conductor line 106 is preferably flexible over its entire length. However, the flexibility can also be limited to the conductor end section 109 assigned to the second line end 108, which passes through the pivoting device 52.

[0151] Preferably, a conductor channel 110 is formed within the module carrier segment 16. It opens into the upper module carrier end segment 16a with an upper channel opening 110a and into the lower module carrier end segment 16b with a lower channel opening 110b. The upper channel opening 110a is preferably formed on the upward end of the upper module carrier end segment 16a, while the lower channel opening 110b is advantageously located on the assembly surface 36 of the lower module carrier end segment 16b, facing the base 29 in the main direction 26a. The lower channel opening 110b is connected to the communication channel 29 and is open to the mounting surface 35. The conductor line 106 extends from the communication channel 29 via the lower channel opening 110b to the conductor channel 110. It then passes through the conductor channel 110, exits at the upper channel opening 110a, and is connected to the module plate 90.

[0152] 4 and 5 , it can be seen that the flexible and resilient conductor path 106 has sufficient length to respond to the pivoting angle movement of the display-and operating module 14 during the module pivoting movement 59 within the conductor channel 110 .

[0153] The vacuum generator unit 2 is preferably equipped with a snap-fit ​​connection 111, by which the display and operating module 14 is releasably and non-pivotably secured in its basic position. The snap-fit ​​connection 111 preferably comprises two flexibly resilient hooks 111a formed on the module housing 100 and protruding downward in the basic position, and a snap-fit ​​recess 111b formed in the vacuum control valve assembly 23 in the region of the upper valve surface 67 for each hook 111a. When the display and operating module 14 is rotated from a pivoted position to the basic position, the hooks 111a automatically snap into the snap-fit ​​recess 111b. The snap-fit ​​connection can be easily released by manually applying a torque to the display and operating module 14 to pivot the vacuum control valve assembly 23 away.

[0154] The display and operating module 14 is specifically designed in the shape of a single-arm handle. It has a first axial end region 14a, where the pivoting device 52 and pivot center 53 are located, and a second axial end region 14b, opposite thereto, which represents the free end of the display and operating module 14. The module housing 100 is advantageously inclined at its second axial end region 14b, facing the bottom side of the vacuum control valve assembly 23, to form a pair of triggering surfaces 112 that are inclined relative to the module longitudinal axis 60. To pivot out of the basic position, the triggering surfaces 112 can be hooked with a finger.

[0155] 1: Vacuum generator device 1a: Vacuum generator group 2: Vacuum generator unit 3: Vacuum access port 4: Suction gripper 5: Suction pipeline 6: Object 7: Absorb flow 8: Arrangement direction 10: Pivot surface 11: Tension rod 12: Work Unit 13: Basic unit 14: Display-and operation module 14a: first axial end region 14b: Second axial end region 15: Valve accommodating area 16: Module carrier segment 16a: Module carrier-end section 16b: Module carrier-end section 17: Control valve device 18a: End module 18b: End module 20: Interface 21: Control unit 22: Structure Group-Perfusion Channel 22a: Connection opening 23: Control valve device 24: Exhaust channel 24a: Exhaust opening 25: Communication lines 25a: Communication Structure 26: Main axis 26a: Main direction 27: Height axis 27a: Height direction 28: horizontal axis 28a: horizontal direction 29: Communication Channel 30: Valve fixing device 30a: fixing screw 30b: fixing screw 31: Matrix 32:Muffler housing 33:Silencer 34: Junction area 35: Mounting surface 36: Combination noodles 37: Fixtures 37a: Fixing screw 38: Injector-Containment Chamber 39: Module carrier-fixing device 39a: Fixing screw 39b: hook-like structure 41: Air flow 42: Jet unit 43: jet longitudinal axis 44a: front end side 44b: rear end side 44c: upper side 44d: lower side 45: Launch nozzle 45a: Launch nozzle channel 46: Capture nozzle 46a: Capture nozzle channel 47: Attraction Zone 48a: Sealing ring 48b: Sealing ring 49: Air inlet area 50: Air exhaust area 51: Module carrier-longitudinal axis 52: Pivoting device 53: Pivot Center 54: Air blowing channel 55: First channel exit 56: Valve cloth construction area 57: Second channel exit 58: Air blowing channel 59: Module pivoting motion 60: Module longitudinal axis 61: Air outflow surface 62: Air outlet 63: Vacuum channel 64: Vacuum surface 65: Connecting device 66: Lower valve surface 67: Upper valve surface 67a: Main valve-face section 67b: Forward control valve-face section 68: Upper outer surface 69a: Hand-assisted trigger device 69b: Hand-assisted trigger device 70: Trigger element 71: Display component 72: Optical wire 73: Light-emitting diode device 74: Interlaced Area 75: Functional unit 76: Transparent area 77: Blowing air flow 78: Check valve 79: Display device 79a: Light-emitting diode 80: operating device 80a: Operation keys 81: Air channel 82: Third channel exit 83: Electronic components 84: Throttling point 85:Throttling piece 86: Trigger segment 87: Pressure sensor 88:Sensor channel 89: Contact device 90: Module board 91:Sensor board 92: Plate Container 93: Main valve 94: Front control valve device 94a: Forward control valve 94b: Forward control valve 95: Contact device 96: Front control perfusion channel 96a: Connecting opening 97: Front exhaust channel 97a: Exhaust opening 100: Unit casing 102: Assembly-and disassembly movement 103: pivot axis 104: pivot shaft 105: Bearing extension 106: Wire Line 107: Line end 108: Wire end 109: Upper wire end section 110: Wire channel 110a: Upper channel entrance 110b: Lower passage entrance 111: snap-fit ​​connection device 111a: Hook 111b: snap-fit ​​recess 112: Trigger surface AS: blocking position BS: Ventilation position P: Compressed air source VS: Vacuum position PS: Control stressors

Claims

1. A vacuum generator device, - having at least one vacuum generator unit (2) extending in a main direction (26a) along a main axis (26), in a height direction (27a) along a pair of main axes (26) orthogonal to the height axis (27), and in a transverse direction (28a) along a pair of main axes (26) and a height axis (27) orthogonal to the height axis (27), - having two axial end sides (44a, 44b) facing each other in the main direction (26a), one upper side (44c) in the height direction (27a) and one lower side (44d) facing each other on the upper side (44c), - The vacuum generator unit (2) has a working unit (12) having an ejector unit (42) for generating a vacuum that can be taken from a vacuum intake port (3) of the working unit (12) and through which compressed air can flow, and an electrically triggered vacuum-control valve unit (23) for controlling the application of compressed air to the ejector unit (42) as required therefor. The vacuum generator unit (2) has a display and operation module (14) extending along the working unit (12) in the main direction (26a) when the upper side (44c) of the vacuum generator unit (2) is in the initial position. When in the initial position, the module has a display device (79) for visualizing status information and an operation device (80) for manually inputting and / or querying operating parameters on the functional side (75) facing upward from the working unit (12). It is characterized in that, The display and operation module (14) is pivotally mounted on the work unit (12) by means of a pivoting device (52) such that it is positioned in an initial position or in a pivoting position at least pivoting away from the work unit (12) via a module pivoting movement (59) that can be performed on the pivoting center (53).

2. The vacuum generator apparatus as claimed in claim 1, wherein: The display and operation module (14) is fixed in its initial position via the engagement and working unit (12) in a releasable and non-pivotable manner.

3. The vacuum generator apparatus as claimed in claim 1, wherein: The pivoting device (52) is constructed such that the display and operation module (14) can pivot relative to the working unit (12) on a pivoting surface (10) parallel to a pair of main axes (26) and height axes (27) via module pivoting motion (59).

4. The vacuum generator apparatus as claimed in claim 1, wherein: The pivot center (53) of the module pivoting motion (59) is defined by a pivot axis (103) extending in the transverse direction (28a) of the vacuum generator unit (2), which is advantageously fixed relative to the working unit (12) in directions orthogonal to the transverse axis (28).

5. The vacuum generator apparatus as claimed in claim 4, wherein: The display and operation module (14) is a separate construction part relative to the working unit (12). The pivoting device (52) has at least one pivoting shaft (104) that defines the pivoting axis (103). The display and operation module (14) is pivotally coupled to the working unit (12) via the pivoting shaft, and is advantageously at least partially pivotally enclosed by the display and operation module (14).

6. The vacuum generator apparatus as claimed in claim 1, wherein: The pivoting device (52) is located in one of the regions of the two axial end sides (44a, 44b) of the vacuum generator unit (2).

7. The vacuum generator apparatus as claimed in claim 6, wherein: The vacuum access port (3) is located in one of the two axial end sides (44a, 44b) of the vacuum generator unit (2), which is on the opposite side to the two axial end sides (44a, 44b) of the vacuum generator unit (2) where the pivot device (52) is located.

8. The vacuum generator apparatus as claimed in item 6, wherein: The display and operation module (14) is shorter than the working unit (12) and extends only a portion beyond the working unit (12) in the main direction (26a) in its initial position, in such a way that only one longitudinal segment of the working unit (12) adjacent to the pivot center (53) and shorter than the total length of the working unit (12) is obscured by the display and operation module (14) in the initial position.

9. The vacuum generator apparatus of claim 1, wherein: The pivoting device (52) is located in the area above the vacuum generator unit (2) (44c), and the pivoting center (53) is advantageously at least substantially at the same height as the surface segment of the upper outer surface (68) of a neighboring working unit (12) in the height direction (27a).

10. The vacuum generator apparatus of claim 1, wherein: The display and operation module (14) can be pivoted at least to an upright pivot position in which it is pivoted 90 degrees upward from its initial position.

11. The vacuum generator apparatus of claim 1, wherein: The display and operation module (14) has the same width as the vacuum control valve device (23) in the transverse direction (28a) of the vacuum generator unit (2), such that the vacuum control valve device (23) is completely obscured by the display and operation module (14) at the initial position.

12. The vacuum generator apparatus of claim 1, wherein: The working unit (12) has a communication structure (25a) internally connected to the vacuum-control valve device (23), which is configured to transmit valve control signals for the vacuum-control valve device (23) and generated by an electronic control unit (21), and is electrically connected to the display and operation module (14) via a flexible and elastic wire line (106) that is deformable in the module pivoting movement (59).

13. The vacuum generator apparatus of claim 1, wherein: The display and operation module (14) has a module housing (100) in which a module plate (90) is provided with a component (83) of a display device (79) and an operation device (80), and is advantageously at least partially transparent or see-through on the functional side (75).

14. The vacuum generator apparatus of claim 1, wherein: At least one working unit (12) of a vacuum generator unit (2) has an upper outer surface (68) in the upper side (44c) region of the vacuum generator unit (2) that is at least partially covered by the display-and-operation module (14) in the initial position of the display-and-operation module (14). In the area covered by the display-and-operation module (14), it has at least one trigger element (70) and / or display element (71) that can be contacted by the upper side (44c) of the vacuum generator unit (2) and can be manually activated in a pivot position in which the display-and-operation module (14) is pivoted at least to a higher position.

15. The vacuum generator apparatus of claim 14, wherein: At least one trigger element (70) and / or at least one display element (71) of the working unit (12) is a component of the vacuum-control valve device (23).

16. The vacuum generator apparatus of claim 15, wherein: At least one triggering element (70) is a hand-assisted triggering device (69a, 69b) of a manually operable vacuum-control valve device (23) and / or at least one display element (71) of the vacuum-control valve device (23) is a status display element of the vacuum-control valve device (23).

17. The vacuum generator apparatus of claim 1, wherein: The working unit (12) has an injector unit (42) including a base unit (13), a display and operation module (14) is pivotally mounted thereon, and a valve fabric surface (56) is formed thereon, on which a vacuum control valve device (23) is fixed.

18. The vacuum generator apparatus of claim 17, wherein: The display-operation module (14) in the initial position at least partially obscures the vacuum-control valve device (23) mounted on the valve fabric surface (56) in a releasable manner in the height direction (27a) toward the upper side (44c) of the vacuum generator unit (2), and is at least pivotable to a pivot position in which the obscuration of the vacuum-control valve device (23) is released, allowing assembly or removal.

19. The vacuum generator apparatus of claim 17, wherein: The base unit (13) defines a valve receiving area (15) that is open at least to the upper side (44c) of the vacuum generator unit (2) and limited to the lower side by a valve fabrication surface (56). The assembled vacuum-control valve device (23) is housed in this receiving area, and one of the two axial end sides (44a, 44b) of the vacuum generator unit (2) is limited by a module carrier section (16) of the base unit (13). On the module carrier section, a display-operation module (14) is pivotally mounted via a pivoting device (52) and advantageously extends through a flexible wire (106) through the module carrier section for electrical contact with the display device (79) and the operation device (80).

20. The vacuum generator apparatus of claim 19, wherein: The base unit (13) has a base (31) having a valve cloth surface (56) and a muffler housing (32) fixed to the base (31) in a joint area (34) and including a muffler (33). In the base (31), an injector unit (42) extends at least a portion of its length and has a firing nozzle (45), a capturing nozzle (46) and a suction area (47) between the firing nozzle (45) and the capturing nozzle (46). The firing nozzle (45) is connected to the valve cloth assembly via an air inlet channel (54) constructed in the base (31). The vacuum-control valve device (23) on the building surface (56) is open to the compressed air applied to the air blowing channel (54), and the suction area (47) is open to the vacuum intake port (3) on the vacuum intake surface (64) formed on the outside of the base unit (13) via a vacuum channel (63). An air blowing channel (58) through the muffler housing (32) and the muffler (33) therein is connected to the capture nozzle (46), which flows to the environment through an air outlet (62) on an air outlet surface (61) of the muffler housing (32).

21. The vacuum generator apparatus of claim 20, wherein: The module carrier segment (16) is fixed to the base (31) as a separate structural part, and the base (31) is advantageously disposed between the muffler housing (32) and the module carrier segment (16) in the main direction (26s).

22. The vacuum generator apparatus of claim 20, wherein: The vacuum channel (63) communicates with the vacuum-control valve device (23) assembled on the valve fabric surface (56) via an air channel (81) extending in the base unit (13). The vacuum channel (63) can be overpressurized via the air channel to eliminate the vacuum generated therein.

23. The vacuum generator apparatus of claim 1, wherein: The vacuum access port (3) communicates with a sensor channel (88) which directs the pressure flowing through the vacuum access port (3) to a pressure sensor (87) housed in the working unit (12), which is electrically connected to the display and operation module (14).

24. The vacuum generator apparatus of claim 1, wherein: It is configured as a vacuum generator group (1a) having multiple vacuum generator units (2) arranged close together and mechanically connected to each other in an arrangement direction (8) orthogonal to the main direction (26a). The working unit (12) is penetrated in the arrangement direction (8) by a construction group-injection channel (22) for connecting to an external compressed air source (P), which is connected to the vacuum-control valve device (23) of each vacuum generator unit (2) to provide the required compressed air for controlling the application of compressed air.

25. The vacuum generator apparatus of claim 24, wherein: The vacuum generator units (2) arranged close together are penetrated by an electrical communication line (25) in the arrangement direction (8), which is electrically connected to the vacuum-control valve device (23) and display-operation module (14) of all vacuum generator units (2), and has an interface (20) for electrical connection with an electronic control unit (21).

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