CN2075624U - Automatic scaling and packing machine for particulate or powder materials - Google Patents

Abstract

The utility model relates to an automatic scaling and packing machine for particulate or powder materials. A light sensor controls the working travel of a cylinder and the position of a balance bar on the basis of prime hardware logic control, the output switching part of the utility model is inserted into an alternate current adaptive module in an interface box connected with a microcomputer, and the entire operating procedure is controlled by the software. The utility model can conveniently and agilely amend the process at any moment according to the change of the condition of the production processes, and the elements and devices have no mechanical contacts and have long service lives and strong universality. The utility model is the development direction of the electromechanical integration. The utility model is suitable for the technical innovation of the packaging shop floor in the chemical industry, the building material industry, the grain industry, etc.

Description

Automatic scaling and packing machine for particulate or powder materials

The utility model relates to the improvement of a kind of particle or granular material automatic weighing packing device.

At present the packing shop of industry particle such as chemical industry, building materials, grain or granular material product has been realized automatic weighing, packing mostly.The conventional electrical control setup that this employing realizes with micro-switch, time relay and hardware logic control circuit, controlling automatic balance slightly feed intake, carefully feed intake, cushion supporting, folder bag, each operation such as pocket.Because micro-switch, relay all are mechanical contact switches, the life-span of its contact is generally about 100,000 times, and a wrapping machine darg on average will be weighed about 20,000 times, in frequent operating process, these have have more than is needed one or two week of low-voltage electrical apparatus of contact to change, and its maintenance cycle is extremely short.In addition, the hardware logic control circuit complex structure, the probability failure height also only possesses the low order function of accurate metering under given conditions, must readjust circuit or device in case mode of operation changes, otherwise metering error is too big.Yet production process always often changes, the flowrate variation of material, and the wearing and tearing of low-voltage electrical apparatus contact point and distortion all can influence the measuring accuracy of device.For the accuracy of normally carrying out and measuring that guarantees to produce, the plant maintenance personnel just must keep in repair in constant adjustment, and labour intensity is big.At present, domestic fertilizer plant is this situation mostly just.

The purpose of this utility model is a kind of particle or granular material automatic weighing and packing machine with electromechanical integration control of design.This device is because of counter control, and as long as people just can constantly adjust, improve the operation operation of machine by software technology, thereby realizes the scientific management of packing shop.

Realization of the present utility model is limited to the retrofit work amount of existing installation.Comprise the material logical sequence, by bucket, the Weighing mechanism that weighing lever and counterweight are formed, pack device, use electromagnetic valve, the cylinder control action slightly establish bin gate, thin feeding door, Dump gate, sackholder, the mechanics of equipment such as buffering push rod and belt conveyor all keeps original state and does not change, but the Sensitive Apparatus that is used as control of cylinder operation stroke distances and arm beam of steelyard position control in electrical control gear all is a photosensor, substitute traditional travel switch, the output of photosensor then be inserted in the interface case in the standard industry controller on the input that exchanges adaptation module be connected, the interface case then is connected with microcomputer and Control Network thereof with cable.After abolishing original hardware controller, only need to install an interface case at the scene, and above-mentioned these contact pointless control modules are installed in the interface case that the standard industry controller is housed, the output importation of interface case and conventional equipment and computing machine and Control Network thereof are connected, and have just finished hardware technology transformation task of the present utility model.

Because the photosensor that the utility model adopts no mechanical contact and the alternative upgrading products that exchange adaptation module＜traditional product AC contactor＞, device prolongs service life greatly, and is active in one's movements, reliably.These devices all are the series of products that typing is produced, generally do not need special maintenance after installing, insertion is equipped with the standard industry controller (as the PB16H+B1 of U.S. OPT022, PB16H+B2) in the interface case and the interface case is a kind of various routines, the reciprocal computing machine that is converted into can receive the physical quantity of traditional engineering technology (comprise simulation or numeral), the interface arrangement of the digital data of handling, thereby in the interface case, the information translation from the automatic balance position-sensing unit is become the criterion calculation machine information, and will control the exercises of automatic balance from the operating order of computing machine.Original automation mechanized operation of being finished by hardware logic electric circuit is all realized by computer software control, flexible, can change revision program at production procedure at any time, senior intelligence intervention is carried out in the operation operation, realize the scientific management that packing is weighed, and alleviate service personnel work degree greatly.

Specifically introduce the utility model below in conjunction with accompanying drawing.

Fig. 1 is a structure configuration principle block diagram of the present utility model.

Fig. 2 is a simplification operation program diagram of circuit of the present utility model.

Among Fig. 1; belt conveyor 11 is sent the particle or the granular material of finished product into material logical sequence 10, and the below outlet of funnel shaped material logical sequence is provided with thick feeding door 1 and thin feeding door 2, then is bucket below thin feeding door 2; its lower end is openable Dump gate 3, and bagger 4.Bucket 7 is positioned at an end of the weighing lever 7 of weighting apparatus, and this end cushions pin-lift arrangement 5 in addition; Slightly be dosed into level sensor δ 1(8), carefully be dosed into level sensor δ 2(9).The other end at weighing lever 7 then has the heavy counterweight 6 of meter, and the thick feeding door 1 here, thin feeding door 2, Dump gate 3, the sackholder 4 gentle lever apparatus 5 of rushing to summit all are to handle its action with corresponding solenoid valve V1～V5 and cylinder thereof to open and close.These electromagnetic valves V1～V5 and two sensors: slightly be dosed into level sensor δ 1(8) and carefully be dosed into level sensor δ 2(9), hand switch K, all with interface case 13 in the adaptation module (can select the approved product OAC5 model of U.S. OPTO company for use) that exchanges of an industrial control unit (ICU) 13A be connected, 13 in interface case links to each other with microcomputer 12 with cable.Assign instruction by the Control Software in the microcomputer 2 and control each electromagnetic valve, sensor action one by one, just the technological operation of whole Weighings and packing is included in the unified planning of electromechanical integration and coordinated by the adaptation module among the interface case 13A.

The sketch of software flow as described in Figure 2.At first two bin gate V1, V2 and buffering push rod V5 all open, and feed intake to bucket fast, and the weighing lever position is cushioned push rod and limited, and can not make the sensor action.Then, whether judging feeds intake in advance will finish, whether the δ 1 that promptly slightly feeds intake puts in place, then close V1 if put in place, stop to feed intake fast, rate of feeding is slack-off, after delaying time 1 second, the buffering push rod is differentiated hopper again and whether has been reached weight basis after discharging weighing lever spacing, and whether the δ 2 that promptly carefully feeds intake also puts in place.If, then close V2, finish and weigh.Judge then whether sackholder clips packaging bag (whether V4 holds successfully) if clip, just opens Dump gate V3, and the material in the hopper is unloaded packaging bag.Through delaying time 2 seconds, V3 closes, and discharging finishes.After short stay, the bottom door of sackholder is opened again.And unclamp sackholder, and packaged thing bag is fallen (V4 closes) to the belt conveyor 12 of lower end, the whole packaging process of weighing has just been finished.

The present invention implements test in the Zepu, Xinjiang of one of key state project petrochemical plant, and effect is remarkable, has improved measuring accuracy and service life of equipment, has also started good start for implementing the electromechanical integration technology transformation in this factory.

Claims (3)

1; the automatic weighing and packing machine of a kind of particle or granular material; include the material logical sequence; by bucket; the Weighing mechanism that weighing lever and counterweight are formed; pack device; use electromagnetic valve; the thick feeding door of cylinder control action; thin feeding door; Dump gate; sackholder; buffering push rod and belt conveyor; with the microcomputer is the electrical control gear of main control system; the Sensitive Apparatus that it is characterized in that being used as in the electrical control gear control of cylinder operation stroke distances and arm beam of steelyard position control all is a photosensor; the output of photosensor then be inserted in the interface case in the input that exchanges adaptation module of standard industry controller be connected, the interface case then is connected with microcomputer and Control Network thereof with cable.

2, automatic weighing and packing machine as claimed in claim 1 is characterized in that microcomputer can adopt common universal microcomputer.

3, automatic weighing and packing machine as claimed in claim 1, the model that it is characterized in that ac control module can adopt U.S. product OAC5 type.

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