In conventional vulcanizing machine the process is mainly hand operated and is transmitted to the pneumatic cylinder through a well laid pipe line system. constructed as a heat consumer and is fitted with an automatic temperature. Automatic pneumatic vulcanizing Machine using heat sensorÂ Solar Water Purification by using thermal methodÂ Fabrication of Paper cup. Automatic pneumatic vulcanizing machine plant the flow medium is transmitted to the pneumatic cylinder through a well laid pipe line system. In our project is consists of heat sensor circuit, solenoid valve and Pneumatic cylinder. The heat.
|Published (Last):||1 March 2009|
|PDF File Size:||17.24 Mb|
|ePub File Size:||9.10 Mb|
|Price:||Free* [*Free Regsitration Required]|
Thus, to complete the vulcanizing operation a plurality of functions are practiced until the step 6 in accordance with the predetermined sequence as illustrated in the step table.
Prior to initiating introduction or discharge of heating medium such as hot water, steam or the like at higher temperature and pressure into or from a tire mounted on the tire vulcanizing machine with the aid of the control apparatus of the invention as constructed in the above-described manner, it is necessary to prdetermine working time in each of the steps and moreover a temperature of steam in the hot plate which serves to heat a molding die or a temperature of steam in a jacket when the latter is incorporated in the molding die.
When an embodiment as illustrated in FIG.
AUTOMATIC PNEUMATIC VULCANIZING MACHINE
A control apparatus for a vulcanizing machine in which vulcanizing is effected by introducing a vulcanizing medium into a rubber made product placed in a molding die and then discharging the same therefrom is disclosed, wherein said control apparatus includes a vulcanizing sequence timer adapted to an output function signal in response to a vulcanizing operation start signal on the basis of vulcanizing data comprising preset vulcanizing steps and functions, said vulcanizing data being read by said vulcanizing sequence timer, and a plurality of control valves for controlling introduction and discharge of a vulcanizing medium in accordance with said function signal outputted from the vulcanizing sequence timer whereby sequential function of the vulcanizing machine is automatically carried out.
For many reasons as mentioned above the proposed tire vulcanizing machine fails to be practical. It is further another object of the present invention to provide a control apparatus for a vulcanizing machine which assures that incorrect vulcanization is predictively detected with high reliability to issue an alarm signal.
The mode sfifting switch 13 serves to carry out shifting to automatic operation, manual operation or the like on the sequence timer unit automattic. Alternatively, the temperature and pressure of the vulcanizing medium preset corresponding to a predetermined vulcanizing step may be selected as illustrated in FIG. Further, a group of pressure switches 80 are provided for detecting pilot air pressure for each of the functions. When function control is to be changed, the pneumstic cam 02 and the adjusting screw 04 are rearranged in accordance with a specific tire specification by manually operating them on the spacially limited control panel.
In any case the purpose of the invention can be achieved by data processing a combination of tire specification, step, function and molding die heating temperature.
This process employs the technique known as compression molding, where the rubber article is intended to adopt the shape uwing the mold.
US4674965A – Control apparatus for a vulcanizing machine – Google Patents
Further, it is another object of the present invention to provide a control apparatus for a vulcanizing machine which assures that tires are vulcanized under constant working conditions at all times with an improved quality of tires. A control apparatus for a vulcanizing machine in which vulcanizing is effected by introducing a vulcanizing medium into a rubber-made product loaded on a molding die and then discharging the same therefrom to vulcanize said rubber-made product, said control apparatus comprising: The control apparatus as defined in claim 1, wherein said vulcanizing time prolonging command is preset by said keyboard or said magnetic card, wherein both the length of time and sequential function step to be prolonged are preset.
As described above, the molding die heating temperature is preset and controlled corresponding to the tire specification while a pair of vulcanizing medium step and function are preset. Accordingly, their detailed description will not be required.
Further, due to the necessity for changing vulcanizing time in summer and winter seasons there is a tendency to cause the timer presetting specification to become complicated. To facilitate understanding of the invention a hitherto known control apparatus will be briefly described below with reference to FIGS. In the drawing reference numeral 40 designates a vulcanizing operation start signal, reference numeral 41 a time generator for causing a step to proceed with time measured from said vulcanizing operation start signal 40, reference numeral 42 a microcomputer, reference numeral 43 a card reader, reference numeral 44 a function output mechanism and reference numeral 45 a molding die heating temperature output mechanism.
Due to the fact that there occurs a time lag between pressure raising until pilot air pressure to be delivered to the group of control valves 69 is raised up to a predetermined pressure and outputting of function signal it is preferable to make comparison therebetween by means of a timer in the comparison mechanism 81 or alarming mechanism 82 after a certain period of time has elapsed. It is another object of the present invention to provide a control apparatus for a vulcanizing machine which assures that the presetting and controlling of molding die heating temperature are automatically carried out without a malfunction such as incorrect presetting or the like.
To prevent such malfunction as mentioned above there were already made a few proposals. If it is wutomatic that the former is deviated from the latter, alarming output 76 is generated and thereby the alarm such as a buzzer or the like means is actuated so as to automatically inhibit proceeding to the next cycle.
The air is compressed in an air compressor and from the compressor plant the flow medium is transmitted to the pneumatic cylinder through a well laid pipe line system. Further, since vulcanizing time varies in summer and winter, it is necessary to change preset specifications for the vulcanizing sequence timer.
In the embodiments as illustrated in FIGS. Further, when data other than predetermined data corresponding to the card number as specified by the key board 4 are to be automtaic, an arrangement is made such that error display is effected in the same manner.
AUTOMATIC PNEUMATIC VULCANIZING MACHINE
With respect to the Macuine. Next, referring to FIG. The vulcanize tube side is kept above the heating coil. Besides them, EPROM and centralized data transmission system with pneuamtic main comp connected thereto may be employed for it. Signals from said pressure switches 80 are delivered to a comparision mechanism 81, while function signals selected at each of the steps are delivered thereto from the function output mechanism The card reader 2 is constructed so as to read data on a magnetic card in which vulcanizing sequence control data such as time, function or the like are stored and thereafter keep them in memory in the sequence timer unit 1.
Hrat accompanying drawings will be briefly described below. To assure that the RAM memory is kept active a back-up battery is usually put in use.