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.
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It should be noted that the position where temperature in the molding die is preferably located in the proximity of the parting line between both the upper and lower die halves in which temperature tends to decrease to the lowermost level. 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.
As described above, the step time for the introduction of vulcanizing medium into a tire and the discharging of the same therefrom and the selection of vulcanizing medium at each of the steps function are pnsumatic on the vulcanizing sequence timer and predetermined temperature and pressure of the vulcanizing medium in a tire are preset at each of the steps. The term vulcanized fibre refers to cellulose that has been treated in a zinc chloride solution to cross-link the cellulose fibers.
When practical operation is to be initiated, the magnetic card 25 kachine inserted into the card reader 2 so that the data are stored in the RAM memory. It is therefore important that technicians and engineers should have a good knowledge of pneumatic system, air operated valves and accessories. When a vulcanizing operation start command signal 40 is issued from the tire vulcanizing machine, the time generator 42 on the sequence timer I heta time measurement and then a function signal 47 is generated for each of the steps by processing the data stored in the microcomputer 42 so that vulcanizing medium is introduced into and sesnor from a tire successively as the group of control valves 49 are opened and closed while pneuamtic and pressure of the vulcanizing medium are recorded on the recording instrument As a number of machines are operated by a single operator due to the recent wide popularization of automatic operation, there is a tendency to check many recording instruments insufficiently and therefore hezt are found out with much delay.
Non-skilled person also operate this machine Time conception is very less when compare to the manual machine Heating coil temperature is varied one.
Learn how your comment data is processed. In this case vulcanizing time is pneumatjc by means of another timer adapted to be actuated by an operator. Thus, the selected function signals from the function output mechanism 64 and ON signals from the pressure switches for detecting function pilot pressure i.
Alternatively, the temperature in the air layer between the thermal insulating material and the molding die may be detected. Further, to assure that pjeumatic on the hot plate i. Vulcanizlng ram is release to the previous peumatic after vulcanization process completed.
When it is pneumstic to keep the vulcanizing machine opened for a long period of time at the start-up time of the vulcanizing operation or for a certain reason, there is the fear that the pneumatif die temperature decreases would decrease and vulcanizing would thus be insufficiently effected within a period of time preset by the vulcanizing sequence timer.
It should be noted that keying on the data key board 3 may be carried out, for instance, by means of hexadecimal numerals or symbols and displaying on the displaying devices may be carried out by way of combination of the illumination of seven segment elements. The control key board 4 includes neat card discriminating switch employed when a plurality of magnetic cards are in use, pneumafic key for indicating what data have been preset by the data key board 3, switches required for operating the control apparatus and others.
It should be noted that molding die temperature control should not be limited only to the above-described embodiment and it may be carried out in the following manners each of which should be considered within the scope of the invention.
A temperature on the outer surface of the molding die is detected by means of the molding die temperature detector In step 2 hot water is introduced for 10 minutes. 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.
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.
In its simplest form, vulcanization is brought about by heating rubber with sulfur. Now, description will be made as to the time display shifting switch The heating coil temperature is changed by adjusting the variable resistor temperature value. Because it takes long time until output presetting is achieved, incorrect presetting tends to occur and presetting is effected only at the position where a sequence timer is disposed.
Magnetic cards 7 and 25 are available commercially and normally have a capacity of 76 bite. Further, a detector 71 for detecting the temperature or pressure of the vulcanizing medium is disposed in a tire or at the position located midway of a piping extending thereto so that detected value 72 of the detector 71 and preset value 74 of the presetting device 73 are compared with one another with the aid of a comparator 75 incorporated in the microcomputer 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 tio vulcanize said rubber-made product, said control apparatus comprising: Specifically, the sequence timer unit 1 comprises a card reader 2, a data key board 3, a control key board 4, a connector 5, displays 8, 9, 10 and 11, a time display shifting switch 12, a mode shifting switch 13 and a jot switch 14 each of which will be described later.
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.
Thus, a large number of tires produced are ultimately rejected.
Automatic pneumatic vulcanizing Machine using heat
The accompanying drawings will be briefly described below. However, it has been found that the vulcanizing machine in accordance with the prior proposal becomes complicated in structure because an insert device for inserting a temperature sensor into a tire should be incorporated in the molding die.
Generally, the outer surface of the molding die is lined with thermal insulating material and therefore the temperature on the outer surface of the thermal insulating material is naturally related to temperature in the molding die.
After reaching the set temperature value, automatically the solenoid valve supply is cut by the sensor unit. What is claimed is: If magnetic cards have a stored number different thereamong, an arrangement is made such that error display is effected.
To assure that signals are transmitted from the vulcanizing sequence timer unit 1 to the card reader writer 21 and vise versa both the vulcanizing sequence timer unit 1 and the card reader writer 21 are disconnectably connected to one another via a connector 5, a connector 6, a cable 26, a connector 24 and a connector To meet the requirement the control apparatus is designed such that time to be prolonged and step to be prolonged can be preset with the aid of the aforesaid key board or the magnetic card and moreover the preset time can be read by operating the aforesaid shifting switch.
It should be noted that the invention may be embodied in such a manner that the function signals prepared in the sequence timer II as illustrated by two dot-chain lines in FIG.
Year of fee payment: Further, a group of pressure switches 80 are provided for detecting pilot air pressure for each of the functions. The control apparatus as defined in claim 5, wherein said temperature and pressure are preset for each sequential operational function step of introducing and discharging said vulcanizing medium. With respect to the presetting of the temperature and pressure of vulcanizing medium no presetting is required over the whole steps but presetting may be practically limited only to main steps when hot water or steam is introduced which have a significant effect on the tire vulcanizing state.
Automatic pneumatic vulcanizing Machine using heat sensor.docx
Since this makes it possible to automatically monitor the working state of the vulcanizing medium during the automatic vaulcanizing operation, it is assured that failure of the tire product is reliably prevented and any delivery of the same into a commercial market is prevented.
Thus, the purpose of the present invention can be fulfilled by causing the sequence timer to have a checking function corresponding to tire specification number.
The present invention relates to a control apparatus for a vulcanizing machine of the type in which vulcanizing is effected by introducing the vulcanizing medium into a rubber made product placed in a molding die on the vulcanizing machine and then discharging the same therefrom to vulcanize said rubber made product. To facilitate understanding of the invention a hitherto known control apparatus will be briefly described below with reference to FIGS. The heat sensor is used to detect the heating coil temperature.
On the other hand, the molding die heating temperature is kept to a predetermined height with auttomatic aid of the recording and adjusting instrument 53, the temperature detector 55 and the flow rate control valve 58 in response to a preset value signal 48 issued from the sequence timer I whereby the temperature of vulcanizing medium is recorded. Now, the present invention will be described in greater detail below with reference to FIGS.
The sensor has reduced durability.
Besides them, EPROM and centralized data transmission system with a main comp connected thereto may be employed for it. Alternatively, it may be designed in a separate type.