JP5038653B2 - Pre-vulcanization verification system and vulcanization system - Google Patents

Description

The present invention is applied to a vulcanization process in which a green tire molded using various tire components is sequentially put into a vulcanizer and heated and pressurized to execute a vulcanization process. The present invention relates to a pre-vulcanization verification system and a vulcanization processing system that perform verification between the green tire and the vulcanizer before processing .

  In the tire manufacturing process, rubber members such as treads and sidewalls that are separately prepared, and cords with rubber such as beads, plies and belts are bonded together with a molding machine (hereinafter referred to as “green tires”). ), And the molded green tire is placed in a mold (vulcanizing pot) attached to a vulcanizer specified in advance, and heated and pressurized at a predetermined temperature and pressure to achieve stable stability with a predetermined elasticity. Produced vulcanized rubber tire (product tire). In this vulcanization process, fully automatic vulcanizers are prevalent, and workers carry in and monitor raw tires.

  When the green tire is carried in, a collation operation is performed between the raw tire that is carried in and the vulcanizer that vulcanizes the raw tire so that there is no difference in the pot.

  As the above collation work, in general, an operator collates a card that describes the vulcanization conditions of a cart equipped with raw tires and a card that describes the vulcanization conditions placed in front of the vulcanizer, The raw tire on the carriage is confirmed to be a raw tire vulcanized by the vulcanizer of the vulcanizer.

  In addition, the operator reads the barcode data affixed to the carriage with a barcode reader and checks the data against the database of the management computer of the vulcanizer, or the barcode data for each tire. It is also considered to check the data by checking against the database of the management computer of the vulcanizer (see the problem to be solved by the invention of Patent Document 1).

As a reference, Patent Document 1 reads a barcode attached to a vulcanized tire, photographs a tread image of the tire, and collates a master image corresponding to the barcode with a photographed image. Therefore, it has been proposed to determine the difference between the vulcanizers.
JP-A-2005-193825

  However, in the collation method by the worker as described above, since collation is performed by the visual observation of the worker, there is a possibility of a collation error.

  Moreover, there is a possibility that different tires may be mixed when loading and unloading raw tires when checking the barcode and database of the raw tire cart. When checking each tire, there will be no mistakes, but the number of man-hours will be huge. There was a problem of becoming.

  Thus, before vulcanization, it was difficult to efficiently detect a difference in the loading of the raw tire.

  Further, it is preferable to determine whether or not the vulcanizing pot to be put in is suitable before vulcanization, that is, in a state of a green tire. And the master image matching technique cannot be applied.

In view of the above facts, the present invention can reliably check all products without increasing the work man-hours immediately before putting the green tire into the vulcanizer, and suppress the occurrence of defective vulcanization. It is an object to obtain a pre-vulcanization processing verification system and a vulcanization processing system .

The invention according to claim 1 is a vulcanization process in which a green tire is charged into a vulcanizer and a vulcanization operation is performed in which the green tire is heated and pressurized by a vulcanization operation sequence set in the vulcanizer. And a vulcanization pre-collation system for collating the green tire and the vulcanizer before vulcanization in the vulcanization step, and identifying the green tire attached to the green tire identifying code, and the said green tire before the a portable reading means for reading the identification information identifying a pressurized硫釜attached to pressurized硫釜, is introduced into the pressure硫釜placed on the cradle from reading the identification code, a timer determination section for determining whether the elapsed time until reading the specific information of the pressurized硫釜exceeds a predetermined time, if the elapsed time is determined within the predetermined time Collates said identification code and said identification information, to determine the compatibility with the pressure硫釜and the green tire, the initiation of the pressurized硫動operation processing on the green tire when it is determined that conforms A suitability determining means to permit ; and a pause means for stopping the start of the vulcanization operation when it is determined that the elapsed time has exceeded the predetermined time and when it is determined to be nonconforming by the suitability determining means; ,have.
According to a third aspect of the present invention, a green tire is charged into a vulcanizing pot, and a vulcanizing operation is performed to heat and pressurize the green tire according to a vulcanizing operation sequence set in the vulcanizing pot. A portable reading means for reading an identification code for identifying the green tire attached to the green tire, and specific information for identifying the vulcanizer attached to the vulcanizer; It is determined whether or not an elapsed time from reading the identification code of the green tire before being put into the vulcanizer loaded on the vulcanizer exceeds a predetermined time after reading the specific information of the vulcanizer A timer determining unit that performs matching, and when the elapsed time is determined to be within the predetermined time, the compatibility is determined by comparing the identification code with the specific information and determining the compatibility between the green tire and the vulcanizer When it is determined that the fixing means matches the green tire and the vulcanizer, the green tire is put into the vulcanizer and the vulcanization operation is executed by the vulcanization operation sequence. A suspension control unit that stops the start of the vulcanization processing operation by the vulcanization control unit when it is determined that the elapsed time has exceeded the predetermined time and when it is determined to be non-conforming by the compatibility determination unit Means.

  According to the first aspect of the present invention, when a plurality of vulcanizers are provided and each performs a vulcanization operation in a different vulcanization operation sequence, the green tires that are carried in are selectively used for the respective vulcanizers. Work to put in.

At this time, the identification code provided on the green tire is read by the portable reading means , and the specific information provided on the vulcanizer is read to identify the identification information of the green tire and the vulcanizer to which the green tire is introduced. By checking the information, it is determined whether or not the green tire and vulcanizer are compatible. As a result of the determination, if it is determined as non-conforming, the predetermined work by the vulcanization process is suspended. Thereby, the green tire is not vulcanized in the wrong vulcanization operation sequence, and the incompatible vulcanization process can be avoided in advance.
In addition, if the identification code and specific information necessary for collation cannot be obtained within a predetermined time, even if the identification code and the specific information are available, there may be some problem. Therefore, the start of the vulcanization operation is also stopped when the timer cannot be obtained at least within a predetermined time and the timer determination means times out.

As such a portable reading means, a portable barcode reader can be used . In this case, the identification code of the green tire and the specific information of the vulcanizer are converted into a bar code, and reading each bar code saves the labor of reading by the operator's hand, thereby preventing a reduction in work efficiency.
The invention according to claim 4 is the vulcanization operation information according to the invention according to claim 3, wherein the determination result of the compatibility determination means is used as verification information, and the vulcanization operation information according to the vulcanization operation of the vulcanizer. together, including the cumulative storage means you cumulatively stores the verification information in synchronization with the vulcanization operation.

According to the present invention, cumulatively storing verification information in synchronization with the vulcanization operation. Thereby, the generation | occurrence | production time of the non-conforming green tire becomes clear.

In this case, the verification information with increasing硫動operation record information accumulated storage can be output to the host controller.

Thereby , for example, the defect information detected in the process after the vulcanization process can be easily associated with the vulcanization operation information, and can be effectively used as data at the time of countermeasures for future defect improvement.

The invention of claim 5 is the invention before Ki請 Motomeko 4 SL placement, the cumulative storage means, you accumulatively stored, including the determination result of said timer determination means.

According to the present invention, with respect to the green tire unable to obtain within a predetermined time even without low, the fit, regardless of the incompatible, to store the result by the timer determination section as the time-up information.

  As described above, in the present invention, immediately before putting a green tire into a vulcanizer, it is possible to reliably check all products without increasing the number of work steps, and to suppress the occurrence of defective vulcanization. It has an excellent effect of being able to

(Outline of tire manufacturing process)
First, an outline of the tire manufacturing process will be described.

  As shown in FIG. 1, the tire manufacturing process is roughly divided into a rubber kneading process and a tread extrusion process to form a topbread and a side tread rubber, and a cord process and a cutting process to form a cord and a belt, and a bead process. Beads are formed and assembled by a molding process, and a green tire (raw tire) 10GT is molded.

  The green tire 10GT is shipped as a product in which a predetermined quality is maintained after passing through the inspection through the vulcanization process and the inspection process.

  In the rubber kneading process, natural rubber or synthetic rubber is cut into a predetermined shape, and various raw materials (sulfur, anti-cracking agent, vulcanization accelerator, zinc white, anti-aging agent, carbon black, etc.) are mixed with a mixer and mixed. The process until kneaded rubber is kneaded using a roll.

  The tread extrusion process is a process in which heat is applied to rubber to soften it, rubber for road surface is extruded, and after cooling, it is cut to the length of one tire.

  In the cord process and cutting process, yarns such as nylon (registered trademark), polyester, and steel are twisted to form a cord, and rubber is crimped on both sides of the cord. The process of cutting.

  The bead process refers to a process in which bead wires are aligned, wrapped in rubber and extruded, and a winding bead is formed on a ring.

  The molding process is a process of assembling the top tread, side tread rubber, cord, belt, and bead parts into a single tire using a tire molding machine, and the green tire, the original tire, is completed. .

  The vulcanization process is a process in which heat and pressure are applied to the green tire 10GT (pressurization and heating) to increase the elasticity of the rubber and to provide a tread pattern on the tire surface.

  That is, the green tire 10GT is put in the vulcanizing pot 12, and is pressed from the inside toward the mold with high-temperature and high-pressure steam. At this time, rubber molecules and sulfur molecules are bonded by heat and pressure, and elasticity and durability are produced in the rubber of the green tire 10GT.

  The final tire shape and tread surface pattern (tread pattern) are also created by the vulcanizer 12 at this time. Therefore, when this vulcanization process is completed, the tire 10 is a finished product.

  In the inspection process, visual inspection and sensory inspection are performed by an inspector, and a check using a tip inspection device such as balance measurement, uniformity measurement, and X-ray inspection is performed on the tire 10 that has passed the inspection.

(Verification in vulcanization process)
As shown in FIG. 2, in the vulcanization process, two vulcanizers 12A and 12B are installed. The green tires 10GT are sequentially sent from the molding process, which is a pre-process of the vulcanization process, and are temporarily placed on the three-point table 14 provided corresponding to the respective vulcanizers 12A and 12B and waited. , And wait for the order to be put into the vulcanizers 12A, 12B. At this time, the bar code written on the bar code tag 18 previously attached to the green tire 10GT is read from the green tire 10GT by the handy bar code reader 16 possessed by the worker. . The barcode written on the barcode tag 18 corresponds to a model number or a product number of the green tire 10GT, and is an identification code for identifying the green tire 10G.

Barcode tags 20 are also attached to the vulcanizers 12A and 12B, respectively, so that they can be read by the handy barcode reader 16 . The barcode written on the barcode tag 20 is identification information that identifies the vulcanizers 12A and 12B.

  The green tire 10GT placed on the three-point table 14 is transferred to the vulcanizers 12A and 12B in accordance with a predetermined order by the loader 22.

  The vulcanizers 12A and 12B are respectively provided with control units 24A and 24B for vulcanization operation. Each control unit 24A, 24B is controlled by a PLC (programmable logical controller) 28 in which a vulcanization operation sequence is programmed via a network bus 26.

Touch panels 15A and 15B are connected to the control units 24A and 24B . The touch panels 15A and 15B have a display function for displaying the vulcanization processing status by the vulcanizers 12A and 12B and an input operation function for giving predetermined instructions to the vulcanizers 12A and 12B. Instead of reading the barcode tag 20 with the handy barcode reader 16, the operator may input specific information using the touch panels 15A and 15B.

  The control units 24A and 24B of the vulcanizing pots 12A and 12B execute preset vulcanization processing operations under the control of the PLC 28, respectively. Each vulcanization operation mainly differs in vulcanization time, temperature, and pressure.

  The handy bar code reader 16 is of a wireless communication type and transmits the read bar code information to the access point 30 connected to the network bus 26.

  A wireless LAN terminal 32 is connected to the network bus 26. The wireless LAN terminal 32 communicates with the access point 30 that communicates with the PLC 28, the controllers 14A and 14B of the vulcanizers 12A and 12B, and the handy barcode reader 16 via the network bus 26. And wireless communication with a host controller (not shown).

Here, in the present embodiment, the PLC28, green tire 10GT sent from the molding process, pressure硫釜12A, whether correctly Ru thrown into 12B, so as to match before vulcanization ing.

  At the time of this collation, the barcode written on the barcode tag 18 is read by the handy barcode reader 16 from the green tire 10GT placed on the three-point table 14 to obtain the identification code of the green tire 10GT.

  On the other hand, from the vulcanizers 12A and 12B, the barcode written on the barcode tag 20 is read by the handy barcode reader 16 to obtain specific information of the vulcanizers 12A and 12B (input via the touch panels 15A and 15B). Is also possible).

  The PLC 28 determines whether or not the green tire 10GT is correctly placed on the three-point placing table 14 based on these identification codes and specific information (conformity, nonconformity).

  Here, when the non-conformity is determined, an emergency instruction signal is output so that the corresponding green tire 10GT is not put into the wrong vulcanizer 12A, 12B.

  As the operation based on the emergency instruction signal, partial interlock such as stoppage of the loader 22 and stop of opening / closing of the vulcanizers 12A and 12B or full stop interlock can be considered. Moreover, it is preferable to also perform notifications such as abnormality warnings.

  The PLC 28 has a function of linking (synchronizing) the verification history with the operation of the vulcanization process and storing it. This history can be applied as data for failure analysis when a failure occurs in a process after the vulcanization process (for example, an inspection process).

  Furthermore, the PLC 28 has a timer function. This timer function counts the interval between the barcode reading timing from the barcode tag 18 attached to the green tire 10GT and the barcode reading timing from the barcode tag 20 attached to the vulcanizers 12A and 12B. If the above is not executed within a predetermined time, it is determined that the probability of occurrence of a malfunction such as a misplacement of the green tire 10GT is high on the way, and the emergency instruction signal or a signal according to the emergency instruction signal ( A semi-emergency instruction signal) is output.

  Table 1 below lists the functions of the main members constituting the verification system in the present embodiment.

  The operation of the present embodiment will be described below with reference to the flowchart of FIG.

  In step 100, it is determined whether or not the green tire 10 GT is placed on the three-point table 14. If an affirmative determination is made, the process proceeds to step 102, where the handy barcode reader 16 is used to The barcode is read from the barcode tag 18 affixed to the tire 10GT. The read data is sent to the PLC 28.

  In the next step 104, the timer function mounted on the PLC 28 is activated (reset / start), and then the process proceeds to step 106 where the handy barcode reader 16 is used to paste the vulcanizers 12A and 12B. The barcode is read from the barcode tag 20 provided. The read data is sent to the PLC 28.

In the next step 108, to stop the timer function of PLC28, then in step 110, the bar code reading timing from a predetermined time in the pressurized硫釜12A of the green tire 10GT, whether 12B barcode reading has been completed is determined Is done.

  If an affirmative determination is made in step 110, it is determined that the green tire 10GT that has read the bar code is inserted into the predetermined vulcanizers 12A and 12B without being replaced, and the routine proceeds to step 112, where the PLC 28 In FIG. In the collation process, based on the identification code read from the green tire 10GT and the specific information read from the vulcanizers 12A, 12B, the verifier determines whether the vulcanizers 12A, 12B are appropriate for the green tire 10GT. Is executed.

In the next step 114, vulcanizing process operating information is recognized, then at step 116, stores the verification information by linking (synchronized) to the operation information, the process proceeds to step 118.

  In step 118, based on the result of the collation process in step 112, it is determined whether or not the vulcanizers 12A and 12B into which the green tire 10GT is to be put in are compatible (non-conforming).

  If it is determined as “adapted” in step 118, it is determined that the vulcanization process is normally executed, the process returns to step 100, and the above process is repeated.

  If it is determined as “non-conforming” in step 118, it is determined that the green tire 10GT is put into the wrong vulcanizer 12A, 12B, the process proceeds to step 120, an emergency instruction signal is output, and an alarm is issued. And go to step 124. In the control units 24A and 24B of the vulcanizers 12A and 12B, a measure for suspending the vulcanization process, such as applying the vulcanizers 12A and 12B interlock, is executed based on the input of the emergency signal.

  On the other hand, if each bar code is not read within the predetermined time in step 110, the process proceeds from step 110 to step 122, a semi-emergency instruction signal is output, an alarm is issued, and the process proceeds to step 124.

  In step 124, an alarm is displayed on the touch panels 15A and 15B of the vulcanizers 12A and 12B and the display unit of the handy bar code reader 16, and the process proceeds to step 126.

  In step 126, it is determined whether or not the return can be performed while maintaining the predetermined safety. If the return is possible (affirmative determination), the process proceeds to step 128 and the return process is executed. If the determination in step 126 is impossible (negative determination), the process proceeds to step 130 and interlock is continued.

As described above, in the present embodiment, before the vulcanization process, the bar code which is an identification code for specifying the green tire 10GT is read, and the vulcanizers 12A and 12B to which the green tire 10GT is to be introduced are read. By reading the barcode, which is the specific information for identification, and collating the two, it is possible to automatically execute conformity / nonconformity determination before the vulcanization process, thus reducing the vulcanization process failure. it can.

In this embodiment, the handy barcode reader 16 is applied. However, the barcode reader may be attached to the loader 22 so that the barcode is automatically read during the transfer of the green tire 10GT. .

It is the schematic of the tire manufacturing process which concerns on this Embodiment. It is a collation system block diagram in the vulcanization process concerning this embodiment. It is a control flowchart which shows the flow of collation system execution in the vulcanization process concerning this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Tire 10GT Green tire 12A, 12B Vulcanization pot 14 Three point stand 15A, 15B Touch panel 16 Handy barcode reader ( portable reading means )
18 Barcode tag ( identification information )
20 Barcode tag ( specific information )
22 Loader 24A, 24B Control unit (pause means)
26 network bus 28 PLC (suitability determination means, a timer determination section, resting hand stage)
30 Access point 32 Wireless LAN terminal

Claims (5)

It is applied to a vulcanization process in which a green tire is charged into a vulcanizer and a vulcanization operation is performed to heat and pressurize the green tire according to a vulcanization operation sequence set in the vulcanizer. Before the vulcanization treatment, a vulcanization pre-collation system for collating the green tire and the vulcanizer,
Portable reading means for reading an identification code for identifying the green tire attached to the green tire , and specific information for identifying the vulcanizer attached to the vulcanizer ;
After reading the identification code of the green tire prior to being charged into the placed on stand pressurized 硫釜, whether the elapsed time before reading the specific information of the pressurized硫釜exceeds a predetermined time Timer determination means for determining
When the elapsed time is determined to be within the predetermined time, the identification code and the specific information are collated, the compatibility between the green tire and the vulcanizer is determined , and determined to be compatible A suitability determining means for permitting the start of the vulcanization operation process for the green tire in the case ,
When it is determined that the elapsed time has exceeded the predetermined time, and when it is determined as nonconforming by the conformity determining unit, a suspension unit that stops the start of the vulcanization operation ,
Having a pre-vulcanization verification system. The collation system before vulcanization processing according to claim 1 , wherein the portable reading means is a portable barcode reader . A vulcanization processing system that performs a vulcanization processing operation of charging a green tire into a vulcanizer and heating and pressurizing the green tire according to a vulcanization operation sequence set in the vulcanizer.
Portable reading means for reading an identification code for identifying the green tire attached to the green tire, and specific information for identifying the vulcanizer attached to the vulcanizer;
Whether the elapsed time from reading the identification code of the green tire before being put into the vulcanizer placed on a pedestal until reading the specific information of the vulcanizer has exceeded a predetermined time Timer determination means for determining
When the elapsed time is determined to be within the predetermined time, the identification code is compared with the specific information, and compatibility determination means for determining compatibility between the green tire and the vulcanizer;
A vulcanization control unit that, when it is determined that the green tire and the vulcanizing pot are compatible, puts the green tire into the vulcanizing pot and executes the vulcanization processing operation by the vulcanization operation sequence; ,
When it is determined that the elapsed time has exceeded the predetermined time, and when it is determined as nonconforming by the conformity determining unit, a suspension unit that stops the start of the vulcanization processing operation by the vulcanization control unit,
Pressurized硫処Rishi stem having a. Cumulative storage for accumulating and storing the verification information in synchronization with the vulcanization processing operation together with the vulcanization operation information corresponding to the vulcanization processing operation of the vulcanizer, using the determination result of the suitability determination means as verification information. pressurized硫処Rishi stem of claim 3 Symbol mounting including means. The cumulative storage means, pressurizing硫処Rishi stem of claim 4 Symbol mounting accumulatively stores, including the determination result of said timer determination means.

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