Apparatus and methods are provided for controlling flow of a flowable material. The flowable material passes from a product supply through one or more valves which are coupled to a controller. The controller is also coupled to one or more sensors operable to generate a signal indicating whether flow
Apparatus and methods are provided for controlling flow of a flowable material. The flowable material passes from a product supply through one or more valves which are coupled to a controller. The controller is also coupled to one or more sensors operable to generate a signal indicating whether flowable product is present or not present at a specific level within a container. The controller is programmed to operate the valves based on signals received from the sensors. The sensors may be associated with the feed container and used to control metering of flowable product out of the feed container, or they may be associated with a container and used to control filling of the container with flowable product.
대표청구항▼
1. A method for filling to a predetermined fill level a product container of a particular configuration with a flowable product using a product filling machine, comprising the steps of: (a) causing, during a filling operation at a filling station of the filling machine, a flowable product to flow th
1. A method for filling to a predetermined fill level a product container of a particular configuration with a flowable product using a product filling machine, comprising the steps of: (a) causing, during a filling operation at a filling station of the filling machine, a flowable product to flow through a fill valve assembly and through a mouth of and into the product container of the particular configuration located at the filling station,(b) using a sensor mounted at the filling station and positioned over a shoulder of the product container but below the mouth of the product container during flow of the product into the product container, generating a signal in response to the first sensing of the flowable product within the container; and(c) using a controller operably coupled to the sensor and configured to operate the fill valve assembly at the filling station, stopping flow of the flowable product into the container at the filling station upon receiving the generated signal from the sensor at the filling station;(d) wherein the method further comprises a preliminary step of positioning the sensor at the filling station so that the threshold of the sensor's range for first sensing the flowable product through a wall of such a container when the sensor is positioned over the shoulder of the product container but below the mouth of the product container corresponds to the predetermined fill level. 2. The method of claim 1, wherein the preliminary step comprises positioning the sensor at the filling station relative to a product container of the particular configuration that has been filled to the predetermined fill level with the flowable product. 3. The method of claim 1, wherein the flowable product comprises an abrasive. 4. The method of claim 1, wherein the flowable product comprises a gel containing one or more abrasives. 5. The method of claim 1, wherein the flowable product comprises a hand soap containing pumice. 6. The method of claim 1, wherein the sensor is mounted on a bracket at the filling station, and wherein the preliminary step of positioning the sensor at the filling station comprises manually adjusting the sensor relative to the bracket. 7. The method of claim 1, wherein the sensor is elongate, and wherein the preliminary step of positioning the sensor at the filling station comprises positioning the sensor such that a distal tip of the sensor is directed toward the container during the filling operation at the filling station. 8. The method of claim 1, wherein the sensor is elongate and wherein the preliminary step of positioning the sensor at the filling station comprises positioning the sensor such that a distal tip of the sensor is positioned over the shoulder of the container, but below the mouth of the container, during flow of the product into the product container. 9. The method of claim 1, further comprising using a support to carry the container to the filling station for filling at the filling station. 10. The method of claim 9, wherein the sensor is configured in a fixed position relative to the support during the filling operation at the filling station. 11. The method of claim 9, further comprising directing the flowable product into the container using a nozzle of the valve assembly during the filling operation at the filling station, wherein the nozzle of the valve assembly and the support are configured to move relative to each other during the filling operation at the filling station. 12. The method of claim 9, further comprising directing the flowable product into the container using a nozzle of the valve assembly during the filling operation at the filling station, wherein the sensor is configured in a fixed position relative to the nozzle during the filling operation at the filling station. 13. The method of claim 1, further comprising directing the flowable product into the container using a nozzle of the valve assembly during the filling operation at the filling station, wherein the sensor is mounted to the nozzle in a fixed position relative to the nozzle during the filling operation at the filling station. 14. A method for filling, to a predetermined fill level, product containers with a flowable product using a product filling machine, comprising the steps of: (a) causing a flowable product to flow from a product supply to a manifold;(b) causing the flowable product to separately flow from the manifold to a filling station at the filling machine and, at the filling station, for each of a plurality of product containers having the same configuration, (i) causing, during a filling operation, the flowable product to flow through a fill valve assembly and through a mouth of and into a container located at the filling station of the product filling machine,(ii) using a sensor positioned over a shoulder of the container but below the mouth of the container during flow of the product into the container, sensing through a wall of the product container when the flowable product reaches the predetermined fill level within the container, and generating a signal in response to the sensing of the flowable product reaching the predetermined fill level within the container, wherein the predetermined fill level corresponds to a threshold of the sensor's range for first sensing the flowable product within the container;(iii) using a controller operably coupled to the sensor at the filling station and configured to operate the fill valve assembly at the filling station, stopping flow of the flowable product into the container at the filling station in response to receiving a generated signal from the sensor at the filling station; and(iv) as a preliminary step, adjusting the sensor at the filling station based on the predetermined fill level at which the product containers of the particular configuration are to be filled at the filling station such that, after said adjusting, the sensor will first sense flowable product within such a container at the predetermined fill level when the sensor is positioned over the shoulder of the container but below the mouth of the container. 15. The method of claim 14, further comprising a subsequent step of adjusting the sensor at the filling station based on a second, different predetermined fill level at which a subsequent product container having a different configuration is to be filled at the filling station, the second predetermined fill level corresponding, after said adjusting, to a threshold of the sensor's range for first sensing the flowable product within the subsequent container having the different configuration. 16. The method of claim 14, further comprising directing the flowable product into the container using a nozzle of the valve assembly during the filling operation at the filling station, wherein the sensor is mounted to the nozzle in a fixed position relative to the nozzle during the filling operation at the filling station. 17. A method for filling first and second product containers with a flowable product using a product filling machine, the first product container being of a first configuration, and the second product container being of a second configuration that is different from the first configuration, the method comprising the steps of: (a) for the first product container, (1) causing, during a filling operation at a filling station of the filling machine, the flowable product to flow through a fill valve assembly and through a mouth of and into the first container located beneath the fill valve assembly, and(2) using a sensor mounted in a first position over a shoulder of the first container but below the mouth of the first container during flow of the product into the first container, sensing through the first container when the flowable product reaches a predetermined fill level within the first container and generating a signal in response to the sensing of the flowable product reaching the predetermined fill level within the first container, wherein the predetermined fill level corresponds to the threshold of the sensor's range for first sensing the flowable product within the first container; and(3) stopping flow of the flowable product into the first container at the filling station upon generating the signal from the sensor at the filling station;(4) wherein the method further comprises a preliminary step of calibrating filling at the filling station by adjusting a mounting of the sensor such that, after said adjusting, the sensor will first sense flowable product within the first container at the predetermined fill level when the sensor is positioned over the shoulder of the first container but below the mouth of the first container; and(b) for the second product container, and after filling of the first container, (1) causing, during a filling operation at the filling station of the filling machine, the flowable product to flow through the fill valve assembly and through a mouth of and into the second container located beneath the fill valve assembly, and(2) using the sensor mounted in a second position over a shoulder of the second container but below the mouth of the second container during flow of the product into the second container, sensing through the second container when the flowable product reaches a predetermined fill level within the second container and generating a signal in response to the sensing of the flowable product reaching the predetermined fill level within the second container, wherein the predetermined fill level corresponds to the threshold of the sensor's range for first sensing the flowable product within the second container; and(3) stopping flow of the flowable product into the second container at the filling station upon generating the signal from the sensor at the filling station;(4) wherein the method further includes a step performed subsequent to the filling of the first container at the filling station, but before the step of filling the second container at the filling station, of recalibrating filling at the filling station for the second container by adjusting the mounting of the sensor such that, after said adjusting, the sensor will first sense flowable product within the second container at the predetermined fill level within the second container when the sensor is positioned over the shoulder of the second container but below the mouth of the second container. 18. The method of claim 17, further comprising for each of the first product container and the second product container, directing the flowable product into such container using a nozzle of the valve assembly during the filling operation at the filling station, wherein the sensor is mounted to the nozzle in a fixed position relative to the nozzle during the filling operation at the filling station.
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