Apparatus for discharging pasty compressible substances of high viscosity
AssigneeLenhardt Maschinenbau GmbH
InventorKarl Lenhardt
Life of this patent
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Abstract
The apparatus comprises a buffer container (1) for receiving the pasty substance of high viscosity, a feed line (11), through which the buffer container (1) can be refilled with the substance, a pressure generator (2 to 5), by which the substance in the buffer container (1) can be pressurizes, a nozzle (10), which is close to the buffer container (1), a pressure sensor (43) downstream of the pressure generator, and a controller (44). As a result, the metering rate can exactly be controlled close to the nozzle (10).
Claims17
An apparatus for delivering a pasty compressible substance of high viscosity, particularly for applying sealants and adhesives to automobile body parts in the manufacture of automobile bodies, the apparatus comprising:
- a supply container (13) for holding the substance,
- a nozzle (10) having a mouth for discharging the substance,
- a feed line (11, 45) leading from the supply container (13) to the nozzle
- a pump (12) for feeding the substance into the feed line (11, 45),
- a holder for holding the nozzle,
- a buffer container (1) disposed on the holder (46) close to the mouth of the nozzle (10) in fluid flow connection to the feedline, and having a variable volume,
- a pressure generator (2 to 5), which is disposed directly on or in the buffer container (1) and is provided in addition to the pump (12), said pressure generator acting upon the buffer container to vary the volume thereof,
- a flow path (45, 64, 10) between the pressure generator (2 to 5) and the nozzle mouth forming part of the feed line, and
- a pressure sensor (43) which detects the pressure in the flow path (45, 64, 10) at a location which is downstream of the pressure generator (2 to 5), both the pressure sensor and the pressure generator forming part of a control loop (43, 44, 40, 25, 2 to 5) for automatically controlling pressure in the flow path at a predetermined setpoint.
An apparatus for delivering a pasty compressible substance of high viscosity, particularly for applying sealants and adhesives to automobile body parts in the manufacture of automobile bodies the apparatus comprising:
- a supply container for holding the substance,
- a nozzle having a mouth for discharging the substance,
- a feed line leading from the supply container to the nozzle,
- a pump for feeding the substance into the feed line,
- a holder for holding the nozzle,
- a buffer container is disposed in the nozzle
- a pressure generator which is disposed directly on or in the buffer container and is provided in addition to the pump, said pressure generator acting upon the buffer container to vary the volume thereof,
- a flow path between the pressure generator and the nozzle mouth forming part of the feed line, and
- a pressure sensor which detects the pressure in the flow path at a location which is downstream of the pressure generator, both the pressure sensor and the pressure generator forming part of a control loop for automatically controlling pressure in the flow path at a predetermined setpoint.
An apparatus for metering pasty compressible substances of high viscosity, particularly for applying sealants and adhesives to automobile body parts in the manufacture of automobile body parts, the apparatus comprising:
- a supply container (1) which serves to hold the substance and has a variable volume to be occupied by said substance,
- a pressure generator acting upon or in the supply container and thereby varying the volume thereof,
- a nozzle (10) which serves to discharge the substance and is coupled to the supply container (1) and which together with the supply container (1) constitutes a unit which is rigid or stiff, except for the nozzle which optionally may be rotatably mounted at the supply container (1), and
- a pressure sensor (43) which detects the pressure existing at a location downstream of the pressure generator (2 to 5), which pressure sensor (43) and the pressure generator (2 to 5) are included in a feedback loop (43, 44, 40, 25, 2 to 5) for automatically controlling pressure at a predetermined value during the metering action.
Dependencies are inferred from the claim text.