摘要:
An automated granule portioning system includes at least one volumetric measuring chamber capable of adjusting the volume of the chamber automatically to a programmed target volume and arranged to receive a first portion of granules into the chamber to fill the target volume. A transport system automatically delivers the target volume of granules from the chamber to a weighing device. A granule metering device dispenses granules and, depending on a signal from the weighing device that the first portion of granules is below a programmed target weight, dispenses granules to the first portion to increase the weight to achieve a second portion having the target weight.
摘要:
Apparatus and methods for delivering liquid color to a plastic resin processing machine include a scale for weighing a container of liquid color, a pump for removing liquid color from the container, controller for actuating pushers in the pump in a sequence whereby a first pusher is displaced to squeeze the delivery tube while a second and third pusher are not displaced thereby permitting liquid color to flow through the tube from the supply to a first position of tube squeezing, whereupon a second pusher is displaced to squeeze the tube and substantially trapped liquid color in the tube at the first and second position of tube squeezing, whereupon the first pusher permits liquid color to flow through the tube pass the first position of tube squeezing and the third pusher squeezes the tube and thereby forces at least a portion of the trapped liquid color material through the tube pass the first position of tube squeezing thereby supplying liquid color to the plastic resin processing machine at a predetermined rate according to a selected recipe to produce plastic parts having desired characteristics.
摘要:
Apparatus and methods for delivering liquid color to a plastic resin processing machine include a scale for weighing a container of liquid color, a pump for removing liquid color from the container, controller for actuating pushers in the pump in a sequence whereby a first pusher is displaced to squeeze the delivery tube while a second and third pusher are not displaced thereby permitting liquid color to flow through the tube from the supply to a first position of tube squeezing, whereupon a second pusher is displaced to squeeze the tube and substantially trapped liquid color in the tube at the first and second position of tube squeezing, whereupon the first pusher permits liquid color to flow through the tube pass the first position of tube squeezing and the third pusher squeezes the tube and thereby forces at least a portion of the trapped liquid color material through the tube pass the first position of tube squeezing thereby supplying liquid color to the plastic resin processing machine at a predetermined rate according to a selected recipe to produce plastic parts having desired characteristics.
摘要:
This invention relates to an improvement of a control system for a combined weighing apparatus which in more detail includes a plurality of measuring hoppers supplied with products to be measured from transfer means for measuring weights of the products to select a weight equal to or near to a set weight from any combinations of the measured weights, and more particularly to an improvement of a condition-setting system and a measuring hopper combination-selecting system capable of remarkably facilitating setting of data of set weight, transfer conditons and the like by means of the condition-setting system when products to be measured are changed and capable of shortening the time for selecting a combination of measured values so as to enable the combination operation to speed up.
摘要:
A weigh feeding system using a stochastic controller wherein the weight of material is sensed, and an estimate of the mass flow state of the material being discharged is created by use of a Kalman filter process. Plant noise processes and measurement noise processes, which affect the measured weight signal, are modeled as stochastic processes and are used, in combination with the sensed weight signal, to calculate the estimated mass flow state. The noise model is modified to account for disturbances. The estimated mass flow state signal is used to calculate a motor feedback signal which, in turn, is used to control the speed of the discharge apparatus. In this manner, the mass flow of the material actually being discharged is driven to a desired mass flow with minimum error variance in the presence of unavoidable plant and measurement noise. Self-tuning of the stochastic controller is employed to accurately determine parameters of the plant noise and measurement noise processes, and to compensate the controller for control dynamics. Feedback control tuning is also employed to monitor the set-point error in order to achieve quick response while maintaining smooth steady-state set point control.
摘要:
A product feeding device suitable for use with a combination weighing machine having a plurality of weighing hopper. The device comprises a central vibrating dispersion table for dispersing product fed to the center of the table outwardly toward the periphery of the table, and a plurality of retaining hoppers corresponding to the weighing hoppers disposed at the periphery of the table for receiving product directly from the table. Each retaining hopper is equipped with a suitable mechanism for discharging products therefrom.
摘要:
The method of delivering quantities of product measured by weight with each quantity being of an acceptable weight relative to a reference weight, utilizing a set of balances each adapted to weigh a fraction of said quantity and each adapted for unloading of product therefrom to contribute to a delivery, the method comprising for each delivery the steps of generating the values of combinations of weights on the balances excluding those balances which were unloaded on the preceding delivery and comparing the values with an acceptable weight standard to select a combination of balances to be unloaded to deliver said acceptable weight quantity, unloading the balances of the selected combination for said delivery, and loading the balances which were unloaded, wherein, for each delivery, the step of generating and comparing the values of the combinations of weights on the balances excluding those balances which were unloaded on the preceding delivery is initiated before completion of weighing out new loads on those balances, and apparatus for carrying this out.
摘要:
A combination weighing system, which is typically used for packing a plurality of articles in each bag or the like, including a plurality of weighing balances for weighing a plurality of articles at the same time, arithmetic means for selecting some of these weighing balances so that the total weight of the articles on the selected balances falls within a predetermined range, and means for unloading the selected weighing balances to collect the articles thereon and then loading them with new articles, respectively, to initiate the next cycle of operation; and means for enabling initiation of the next cycle of operation before completion of the preceding cycle to allow selection from the unselected balances for the purpose of economy of time.
摘要:
A method of supplying a rifle with cartridges includes providing classes within a group of cartridges. The classes are classified by specific and precisely graduated increments of propellant load contained in the cartridges, or by formulation of propellant, of each class relative to the cartridges of each other class. The user can test fire a rifle with multiple classes of the group and record the accuracy of the firing. A class of the group can be then chosen for a particular rifle based on accuracy of the rifle in the test firing.
摘要:
A method of and apparatus for grading food pieces is described. The method comprises feeding individual food pieces in sequence to a weighing machine having a plurality of weigh hoppers, each food piece being fed to a respective weigh hopper; determining the weights of the food pieces in the hoppers; and dispensing the food pieces from the weighing machine in different manners depending upon the relationship between the weight of each food piece and at least one predetermined range of weights such that food pieces with weights falling within the predetermined range are dispensed in the same manner different from the manner in which those with weights falling outside the predetermined range are dispensed.