WO1986007630A1 - Assembling components of a composition - Google Patents

Assembling components of a composition Download PDF

Info

Publication number
WO1986007630A1
WO1986007630A1 PCT/GB1986/000366 GB8600366W WO8607630A1 WO 1986007630 A1 WO1986007630 A1 WO 1986007630A1 GB 8600366 W GB8600366 W GB 8600366W WO 8607630 A1 WO8607630 A1 WO 8607630A1
Authority
WO
WIPO (PCT)
Prior art keywords
composition
weighing
components
supply
assembly station
Prior art date
Application number
PCT/GB1986/000366
Other languages
French (fr)
Inventor
Joseph Brian Kay
Original Assignee
Microspan Process Controls Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Microspan Process Controls Limited filed Critical Microspan Process Controls Limited
Publication of WO1986007630A1 publication Critical patent/WO1986007630A1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/22—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them
    • G01G19/32—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them using two or more weighing apparatus

Definitions

  • a plurality of means for supplying a respective component of the composition each means being provided with means for controlling the passage of the respective component to means for assembling the composition
  • the apparatus further comprising means for weighing each supply means and an overall control device for controlling the control means of each supply means and being responsive to the weighing means.
  • the apparatus may further comprise means for weighing the assembling means, ' to which weigh ⁇ ing means the overall control means is also responsive.
  • US-A-4513796 describes apparatus for compounding solutions which includes a load cell from which the container for the compounded solution is suspended, its control means being responsive to the load cell.
  • This reference does not disclose means for weighing each supply means and so is subject to the disadvantage that, although the weight of the compounded solution may be correct, the weights of the assembled ingredients may not be in the correct proportions.
  • FIG. 1 is a diagram of a computer controlled apparatus for assembling the components of a composition.
  • a plurality of reservoirs R1 - R6 is provided, one reservoir for each component of the composition.
  • Each reservoir is suspended by means of a load cell LC1 - LC6 from a framework 11 , and each reservoir has its outlet controlled by a pinch valve V1 - V6.
  • the outlets of the pinch valves are connected by a manifold 12 whose outlet extends into a container 13 in which the components of the composition are to be assembled.
  • the container 13 is mounted on a weighing machine 14.
  • a computer controlling device 21 is supplied with information concerning the required quantities of each component of the composition and is responsive to the readings of the load cells LC.
  • the device 21 controls the operation of the pinch valves in turn, opening one pinch valve until the load cell reading of that reservoir drops by an amount corresponding to the quantity of that component required by the information already presented to the computer. This process is applied to the pinch valves of the remaining reservoirs in turn until all the components have been assembled in the container 13.
  • the provision of the weighing device 14, which is optional, enables a check to be made that all the component dispensed by the reservoir has reached the container 13, since the decrease in the weight of the reservoir, read by the load cell of that reservoir, should be equal to the increase in the weight of the container 13 as measured by the weighing device 14. If these two readings differ by more than a tolerance threshold, an alarm is raised to indicate that the assembled components in the container 13 are to be rejected.
  • the compute:- controlling device can check for such wrong connections by checking that when pinch valve VI has been opened, the load cell LCI is the load cell which registers a loss of weight. If it does not, then an alarm is sounded to indicate that a check of the connections should be made.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)

Abstract

Components for a composition are provided in supply means, one for each component. Each supply means is weighed. Control means is provided for controlling the supply of each component to an assembly station for the composition, under the control of an overall control means which is also responsive to the weighing devices. The assembled composition at the assembly station can also be weighed, and the weighing output supplied to the overall control device as well. The invention has special application when high accuracy is required, since it is possible to check the decrease in weight of each supply of the components with reference figures and, with the optional weighing device at the assembly station, the increase in weight of the assembled composition.

Description

ASSEMBLING COMPONENTS OF A COMPOSITION
When high accuracy is required in the assembly of components of a composition, special care must be taken in measuring the Quantities of each component to be used for the composition.
According to the invention there is provided a plurality of means for supplying a respective component of the composition, each means being provided with means for controlling the passage of the respective component to means for assembling the composition, the apparatus further comprising means for weighing each supply means and an overall control device for controlling the control means of each supply means and being responsive to the weighing means. The apparatus may further comprise means for weighing the assembling means, 'to which weigh¬ ing means the overall control means is also responsive.
US-A-4513796 describes apparatus for compounding solutions which includes a load cell from which the container for the compounded solution is suspended, its control means being responsive to the load cell. This reference does not disclose means for weighing each supply means and so is subject to the disadvantage that, although the weight of the compounded solution may be correct, the weights of the assembled ingredients may not be in the correct proportions.
An example of the invention will now be described with reference to the accompanying drawing which is a diagram of a computer controlled apparatus for assembling the components of a composition. A plurality of reservoirs R1 - R6 is provided, one reservoir for each component of the composition. Each reservoir is suspended by means of a load cell LC1 - LC6 from a framework 11 , and each reservoir has its outlet controlled by a pinch valve V1 - V6. The outlets of the pinch valves are connected by a manifold 12 whose outlet extends into a container 13 in which the components of the composition are to be assembled. The container 13 is mounted on a weighing machine 14.
A computer controlling device 21 is supplied with information concerning the required quantities of each component of the composition and is responsive to the readings of the load cells LC. The device 21 controls the operation of the pinch valves in turn, opening one pinch valve until the load cell reading of that reservoir drops by an amount corresponding to the quantity of that component required by the information already presented to the computer. This process is applied to the pinch valves of the remaining reservoirs in turn until all the components have been assembled in the container 13.
The provision of the weighing device 14, which is optional, enables a check to be made that all the component dispensed by the reservoir has reached the container 13, since the decrease in the weight of the reservoir, read by the load cell of that reservoir, should be equal to the increase in the weight of the container 13 as measured by the weighing device 14. If these two readings differ by more than a tolerance threshold, an alarm is raised to indicate that the assembled components in the container 13 are to be rejected.
When the apparatus described above is being assembled, there is always the chance that the wrong pinch valve will b> attached to the outlet of reservoir, particularly if the connecting tubes are long and become tangled. If such wrong connections do occur, the wrong quantities of components w ll be supplied to the container 13• The compute:- controlling device can check for such wrong connections by checking that when pinch valve VI has been opened, the load cell LCI is the load cell which registers a loss of weight. If it does not, then an alarm is sounded to indicate that a check of the connections should be made.
If τ,ne reservoirs die provided with a printed bar code representing the contents of the respective reservoirs, further checks can be made by the computer controlling device in response to readings of the bar codes made by a light pen.

Claims

i: , - -■CLAIMS
1. Apparatus for assembling a composition comprising a plurality of means for supplying a respective component of the composition, each means being provided with means for controlling the passage of the respective component to an assembly station, the apparatus further comprising means for weighing each supply means and an overall control device for controlling the control means of each supply means and being responsive to the weighing means.
2. Apparatus as claimed in Claim 1, comprising means for weighing the composition assembled at the assembly station to which weighing means the overall control means is also responsive.
PCT/GB1986/000366 1985-06-21 1986-06-23 Assembling components of a composition WO1986007630A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB858515724A GB8515724D0 (en) 1985-06-21 1985-06-21 Assembling components of composition
GB8515724 1985-06-21

Publications (1)

Publication Number Publication Date
WO1986007630A1 true WO1986007630A1 (en) 1986-12-31

Family

ID=10581106

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1986/000366 WO1986007630A1 (en) 1985-06-21 1986-06-23 Assembling components of a composition

Country Status (3)

Country Link
EP (1) EP0227776A1 (en)
GB (1) GB8515724D0 (en)
WO (1) WO1986007630A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0397549A1 (en) * 1989-05-12 1990-11-14 Ermont. C.M. Method and device for measuring the bituminous binder content of aggregates in a coating plant
EP0595240A1 (en) * 1992-10-28 1994-05-04 Hartmut Vollmar Dosing apparatus, especially for supplying feed materials to a plastics extruder
GB2469337A (en) * 2009-04-09 2010-10-13 Clayton Engineering Ltd Apparatus and method for combining a primary material with an additive

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB984699A (en) * 1962-03-16 1965-03-03 Lucas Industries Ltd Apparatus for dispensing predetermined weights of a plurality of different liquid or granular materials
US3217927A (en) * 1960-01-08 1965-11-16 Wisconsin Electrical Mfg Co In Automatic control for cumulative delivery of materials
US3749285A (en) * 1971-09-13 1973-07-31 Haemonetics Corp Programmed liquid delivery system
US4345858A (en) * 1980-08-25 1982-08-24 O. A. Newton & Son Company Particulate material dispensing and weighing system and method
WO1984000138A1 (en) * 1982-06-24 1984-01-19 Baxter Travenol Lab High speed bulk compounder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217927A (en) * 1960-01-08 1965-11-16 Wisconsin Electrical Mfg Co In Automatic control for cumulative delivery of materials
GB984699A (en) * 1962-03-16 1965-03-03 Lucas Industries Ltd Apparatus for dispensing predetermined weights of a plurality of different liquid or granular materials
US3749285A (en) * 1971-09-13 1973-07-31 Haemonetics Corp Programmed liquid delivery system
US4345858A (en) * 1980-08-25 1982-08-24 O. A. Newton & Son Company Particulate material dispensing and weighing system and method
WO1984000138A1 (en) * 1982-06-24 1984-01-19 Baxter Travenol Lab High speed bulk compounder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0397549A1 (en) * 1989-05-12 1990-11-14 Ermont. C.M. Method and device for measuring the bituminous binder content of aggregates in a coating plant
EP0595240A1 (en) * 1992-10-28 1994-05-04 Hartmut Vollmar Dosing apparatus, especially for supplying feed materials to a plastics extruder
GB2469337A (en) * 2009-04-09 2010-10-13 Clayton Engineering Ltd Apparatus and method for combining a primary material with an additive

Also Published As

Publication number Publication date
EP0227776A1 (en) 1987-07-08
GB8515724D0 (en) 1985-07-24

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