JP2008129897A - Method of adjusting production command - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To return to an initial production pattern as soon as possible even when production delay or advance production occurs in actual production in a production process for producing members or products every day in a lot unit. <P>SOLUTION: If time delay occurs to an original production command, a production command is automatically issued to cut a production amount of a lot B3, which is the last lot among uncompleted lots B1 to B3 for the second day, equivalent to the time delay. If advance production occurs, a production command is added to produce only an amount for equivalent to the excess in the first day to the first lot C1 among production lots C1 to C3 of the third day, or the like, so that the members and products can be produced in a lot unit by regular production commands from the third day. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for adjusting a production command when a production delay or a production advance occurs in actual production in a production process in which the production amount of a member or product produced in one day is produced in units of lots.

In the tire molding process, members such as carcass ply, bead, side tread, belt, and top tread, which were produced in separate component production processes, were sequentially attached to a molding drum and combined into a single tire. In tire factories that produce raw tires but do mass production in the past, for example, treads, belts, plies, etc. are fully wound on reels, and the above-mentioned components are sufficient for the tire molding lot. Only a certain amount is supplied.
On the other hand, in tire factories that produce a variety of products in small quantities, a so-called equal production system is employed in which the production amount of one lot of each member is produced and supplied in an amount necessary for one lot of tire molding. For example, when the number (base) per lot of the molding process is 100 and the length of the tread member (unit basis) required for one tire is 1.3 m / piece, the above-mentioned tread member, etc. The quantity member command is (radix) × (member unit length) = 100 × 1.3 = 130 m / cart.
In this way, when the production amount per one lot is performed based on the above-mentioned equal amount member command, the supply member can be used up for each molding lot, so that the molding efficiency can be improved and the molding can be performed. Since the process does not hold inventory, there is an advantage that space can be used effectively.

  By the way, when producing such a member in units of lots, the production amount of members to be produced in a day is generally performed in units of lots. Therefore, in the member production process, members are produced based on a lot-unit production command as shown in FIG. However, when trouble occurs in the member production process and production is delayed, the final lot among the lots to be produced on the day will be produced across the day and the next day. Since this delay is carried over to the next day, problems such as production of one lot over two days occur on the next day and the next day. In other words, when one lot is produced over two days, not only will there be problems such as large variations within the lot due to differences in the operating conditions of the production equipment, but the production equipment will also start up. Since the number of times increases, there arises a problem that the production efficiency is lowered.

  However, in the current member production process, in response to such a situation, the person in charge of production command reissues the production command each time while checking the condition of parts assortment and the number of stocks. For example, FIG. As shown in), the production of the final lot on the 3rd day is not carried over on the 4th day, such as by cutting the order of the unmanufactured lot on the next day (3rd day), which is an unproduced lot. For this reason, it has been difficult to properly solve the above problems.

  The present invention has been made in view of the conventional problems, and in the production process in which the production amount of parts or products to be produced in a day is produced in units of lots, even when production delay or production leading occurs in actual production. An object of the present invention is to provide a method for adjusting a member production command which can be returned to the original production form as soon as possible.

The invention according to claim 1 of the present application is a method for adjusting a production command in which the production amount of a member or a product to be produced in a day is adjusted in units of lots, and is produced in a member or product that is determined to be produced. If a production delay or production leading occurs and the daily production volume does not reach the lot unit, a production command to adjust the production volume of the next day, which is not produced, is given, and the parts that will be produced in one day from the next day Alternatively, the production amount of the product is performed in units of lots.
According to the second aspect of the present invention, in the production command adjustment method according to the first aspect, when the daily production amount does not become a lot unit due to production delay in the member or product, A production command for cutting the production amount by the delay time is performed.
According to the third aspect of the present invention, in the production command adjustment method according to the first aspect, when the daily production amount does not become a lot unit due to production prior to the member or product, A production command for producing a member or product on the next day for the amount of time preceding the production amount is performed.

  According to the present invention, there is a method for adjusting a production command in which the production amount of a member or product to be produced per day is adjusted in units of lots. If the daily production volume does not become a lot unit, for example, if the daily production volume does not become a lot unit due to production delays in parts or products, the production volume of the next day that is not yet produced When the production command is cut to the above delay time, or the daily production volume does not become a lot unit due to the production advance of the parts or products, the production volume of the next day that is not produced is Production orders to produce parts or products for the next day only, etc., and production orders to adjust the production volume for the next day that is not produced, etc. Since so as to perform in batches, it is possible to minimize variations in the lot, it is possible to improve the productivity.

Hereinafter, the best mode of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing an outline of a method for adjusting a member production command in a member production process according to the best mode. In this example, a time delay has occurred with respect to the original production command, and the production command has already been issued. When the last lot A3 of the lots A1 to A3 to be produced on the first day, which is a lot, is to be produced across the current day and the next day, automatically at that point Of the production lots B1 to B3 on the second day, a production command for cutting the production amount of B3, which is the final lot, by the delay time is performed, and this is set as a confirmation command. As a result, for the production lots C1 to C3 on the third day, a normal production command for performing the production amount of a member or product to be produced in one day in units of lots can be performed. The production lot is only A3. Therefore, variation within the lot can be minimized, and the number of start-ups of the production equipment is increased only on the second day. Thus, productivity can be improved.

  On the other hand, as shown in FIG. 2, production precedes the original production command, and the production of the lots A1 to A3 to be produced on the first day, which is the fixed lot for which the production command has already been issued, is finished. If the first lot B1 among the production lots B1 to B3 on the second day, which are unproduced, is to be produced over the current day and the next day, it is automatically 2 days at that time. Production for the first lot C1 among the production lots C1 to C3 on the third day, which is the lot that is scheduled to be produced following the production lots B1 to B3 on the first day. A production command (additional production command for C1) for additional production is performed, and this is set as a confirmation command. As a result, for the lots after the production lot C1 on the third day, it is possible to issue a production command for performing the production amount of the parts or products to be produced in a day in units of lots. The production lot is only B1. Therefore, variation within a lot can be minimized. Also in this case, since the number of start-ups of the production equipment is increased only on the second day, productivity can be improved as compared with the case where a conventional production command person adjusts according to the situation. Can do.

  Thus, according to this best mode, when a time delay occurs with respect to the original production command, the production lots B1 to B3 on the second day which are unproduced are automatically generated at that time. Among them, the production command for cutting the production amount of the final lot B3 by the above delay time is performed, and conversely, when production precedes, the first lot of the production lots C1 to C3 on the third day From C3, production of normal parts or products that are produced on a single day is added to C1, such as by adding a production command to produce only the production amount that preceded the lot on the first day. Since it is possible to issue a production command for performing the quantity in units of lots, it is possible to minimize variations in the lots and improve productivity.

  In the above-mentioned best mode, a general part manufacturing process has been described. However, a molding process for manufacturing a product by sequentially assembling members produced in separate member production processes, such as a tire molding process, and product manufacturing. Also in the process, if the present invention is applied, the variation in the lot can be reduced and the production efficiency can be improved.

  As described above, according to the present invention, variation within a lot can be minimized, and productivity can be improved, so that a production system for parts and products can be operated efficiently.

It is a figure which shows the outline | summary of the adjustment method of the member production command which concerns on this best form. It is a figure which shows the other example of the adjustment method of the member production command by this invention. It is a figure which shows the adjustment method of the conventional member production command.

Claims (3)

  This is a method for adjusting a production command for the production of parts or products produced in a day in lot units, and a day when production delays or production precedes in parts or products that have been confirmed to be produced. If the production volume is not in lot units, a production directive is made to adjust the production volume for the next day, which is not produced, and the production volume of parts or products to be produced in one day from the next day will be carried out in lot units. A production command adjustment method characterized by that.   2. A production command for cutting a production amount on the next day, which is an unproduced portion, by an amount corresponding to the delay time when a daily production amount does not become a lot unit due to a production delay for a member or a product. The adjustment method of the production directive described in 1.   If the daily production volume does not become a lot unit due to production prior to the parts or products, a production command is issued to produce the next day's parts or products only for the preceding time above the production volume of the next day that is not produced. The method for adjusting a production command according to claim 1.

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