JP3439502B2 - Mold maintenance device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold maintenance device used for a molding machine such as an injection molding machine or a foam molding machine. 2. Description of the Related Art In a mold used for a molding machine such as an injection molding machine, a die casting machine, a foam molding machine, etc., a mold number is assigned to a mold in order to distinguish the mold from other molds. The bar code is written by hand or a bar code or the like indicating a mold number is attached to the mold, and the bar code is read. As described above, the mold number can be read by a bar code or the like and input to a personal computer or the like. In the bar code, time-varying mold information other than the mold number is updated each time. It is impossible to go,
Conventionally, there has been no other method than to memorize molding conditions and maintenance management records when using a mold in a document each time. [0004] As described above, in the conventional mold, the mold number is simply described, and the mold number is used by an operator to distinguish the mold. It is only provided for use. [0005] On the other hand, in addition to the mold number, the mold has unique attributes such as a mold manufacturing date, a product name molded by the mold, a mold structure, and a resin used. For example, there is a convenient one that is stored in correspondence with the mold.
In addition, molding conditions and maintenance management records when using the mold, for example, the number of uses, the frequency of use, trouble history information,
Since the correction record, cost depreciation information, non-use period, etc. are also determined for each mold, it is necessary to store these data as well. This method is inconvenient because it requires matching each time. Therefore, it is very convenient for the maintenance of the mold to successively store and update the above various conditions in the storage device attached to the mold. However, in order to keep the operation of the storage device, a power supply is required. This is necessary and the cables must continue to power the storage device. In such a power supply system, when a momentary power failure or the like occurs, there is a problem that data stored in the storage device disappears in an instant, and enormous labor is required to input again. An object of the present invention is to enable a mold to store and update information relating to the use conditions and management of the mold, and to prevent the stored data from being erased due to a power failure or other accident. There is no such thing, and the mold itself can be easily managed by attaching the information itself to the mold. [0008] According to an aspect of the invention described in claim 1, "it is attach to a mold for use in molding machine (B1) (C),
Storage device (1) that can write and read management information of the mold (C) and that can perform data processing by connecting to the external device (B)
When a solar cell (3) and is composed of <br/> storage battery (4) and de composed secondary power (2), stored in the storage device each time using mold (C) (1)
Update the management information of the mold (C)
Measures the non-use time and reaches the setting maintenance point
Message is displayed, and after performing maintenance, the next maintenance
Input and set to the storage device (1) as management information.
Mold maintenance device (A)
You. Thus, in the storage device (1) attached to the mold (C), a mold number, a mold manufacturing date, a product name to be molded by the mold (C), and a structure of the mold (C). , Information specific to the mold, such as the resin used, molding conditions when using the mold (C), maintenance management records, and other useful information if stored for the mold (C) And also,
By sequentially rewriting the information, the stored information is read out by the control device (5) of the molding machine (B1), so that the molding conditions can be automatically set, and the management and maintenance of the mold (C) can be performed in this storage. Not only can the information be easily obtained, but also the data can be semi-permanently backed up by a secondary power supply (2) composed of a solar cell (3) and a storage battery (4), so that a memory measure (1) It is safe without losing data inside. Further, unlike the external power supply, the power supply is of a private power generation type, so that a connection cord to the external power supply is not required, and the handling is very convenient. [0010] In addition, it is possible to perform the mold management under the latest data, yet the data, such as anti-rust work also get it is possible for the rust when the mold non-use time is longer. FIG. 1 shows a mold maintenance device according to the present invention.
FIG. 2 is a perspective view of a mold (C) equipped with (A), FIG. 2 is a perspective view of a storage device (1) in which mold maintenance differences form part of (A),
FIG. 3 is a block diagram of a mold maintenance device (A) used for the mold (C) according to one embodiment of the present invention. (C1) and (C2) are a pair of fixed and movable molds, and one of the molds (C1) and (C2) (fixed mold) has a mold maintenance device (A) provided with a heat insulating material or the like. Is fixed through. As can be seen from FIG. 1, the mold maintenance device (A) is divided into a secondary power supply (2) and an operation unit (13) in this embodiment, and the secondary power supply (2) includes a solar cell (3). ), Storage battery (4), CPU (10), storage device (11), timer (T), mold opening / closing input unit (12), etc. Is LC
A numeric keypad (7) for input is provided below the D display unit (9). Further, a connection terminal (8) with the external device (B) is provided, and an open / close switch (SW) such as a proximity switch is provided between the two dies (C1) and (C2). The storage device (1)
Is composed of, for example, a read only memory (ROM) and a random access memory (RAM).
The control device (5) of the molding machine (B1), which will be described later, or an external device (B) such as a personal computer (B2). In this embodiment, the secondary power supply (2) is mounted on the upper surface of the mold (C1) to facilitate light collection, and the operation unit (1)
3) is attached to the front of the mold (C) for easy operation, and both are connected by a cable (6). Generally, sunlight and indoor fluorescent light often come from above, so the secondary power supply (2) was set on the upper surface of the mold (C) as described above, but of course it is not limited to this. Instead, a surface on which more light can be collected can be selected. (In the present embodiment, for example, it is assumed that the front of the mold (C) is easy to see, but is insufficient to cover the light amount. On the other hand, it is assumed that the upper surface of the mold (C) is sufficient. In this case, the solar cell (3) is installed on the upper surface of the mold (C).) [0015] The storage device (1) in the mold maintenance device (A)
When the mold (C) is created, the information invariable in the mold (C) to which the storage device (1) is attached is stored in the ROM of the numeric keypad.
(7) through writing using an external device (B) such as a molding machine (B1) or a personal computer (B2). For example, the ROM contains: Mold information Mold number, date of manufacture, mold manufacturer name, name of molded product for molding the mold, type of resin used, mold dimensions (height / width / thickness), mold weight , Locate ring diameter, presence of core
Type, number of plates (2, 3 etc.) B. C. Information related to molding Allowable clamping force, projected area, volume in cavity, weight of molded product, allowable maximum injection pressure Mold plan (a) Information cavity number of cavity, thickness of molded product (thin wall, thick wall, etc.) (b) Runner information Sprue shape, sprue weight, sprue bush diameter (c) Gate information gate D. Shape and gate dimensions (height, width, etc.) D. Repair procedure, trouble history information, correction record B. Molding conditions during mold making, mold temperature controller conditions (standard molding conditions) G. Cycle time during mold making (standard cycle time) Cost depreciation information is stored. In the RAM of the storage device (1), information that changes using the mold (C) among the above-mentioned various data [for example, notes on molding, maintenance, management, etc. History (the number of shots performed using the mold (counted by the open / close switch (SW) in the number of moldings), the total number of maintenances, the number of shots scheduled to be performed next, and when maintenance was performed Date, number of shots when maintenance was performed, maintenance details at that time, usage frequency, etc.) Other non-use time count] Information that the user using the mold (C) arbitrarily writes and uses (for example, the date and time when the mold (C) was lent to a subcontractor, where the ejecta pin was damaged, and how many Mold history). Next, using this mold (C), an injection molding machine (B
The operation when 1) is operated will be described. First, when the mold (C) is created, the contents of the invariable information such as the mold number described above are stored in the ROM of the storage device (1) attached to the mold (C) using the numeric keypad (7) to an external device ( Write in B), operation section
(13) is attached to the front of the mold (C), and at the same time, the secondary power supply (2) is attached to the top of the mold (C). Also, the first scheduled maintenance shot number is written to the address of the first scheduled maintenance shot number in the RAM. At the start of use, the number of shots used and the total number of maintenance are set to “0”. Then, the mold (C) is attached to the injection molding machine (B1), the control device (5) of the injection molding machine (B1) is connected to the storage device (1), and a mold information read command is input to the storage device. The contents stored in the ROM of (1) are read, and the contents are displayed on the CRT screen of the control device (5). Based on the displayed contents, the operator determines the mold (C)
And whether there is no mistake in the resin used.
In addition, the molding condition setting command from the storage device (1) is
The process of setting molding conditions is started by inputting from (B1). Normally, molding is performed when the mold (C) is created, and the mold (C) and molding conditions are modified until a good product can be molded. The molding conditions at the time of completion are stored in the ROM of the storage device (1) in advance as standard molding conditions. Further, a correction value depending on the model can be stored. When the molding conditions are set in this way and the heating cylinder and the mold (C) reach the set temperature and molding is possible,
If a good molded product is not obtained after test firing, the molding conditions are corrected. At this time, the corrected molding condition items are transferred to the molding machine (B1).
Is temporarily stored in the control device (5). Then, when a good molded product is obtained, the continuous molding operation is started.If the molding conditions are changed before the continuous operation is started, the control device (5) When the registration command is input from the storage device (A), the storing process for the storage device (1) of the mold maintenance device (A) is started. Before starting the molding operation, the date (or date) is determined by a timer (T) provided in the CPU (10) of the mold maintenance device (A), and injection is performed as necessary. The temperature, outside air, humidity, and the like are read through various instruments attached to the molding machine (B1), and the work date and time, work environment, and the like are stored. When molding conditions are set for the first time for the model of the molding machine (B1) (when the model is used for the first time),
At this time, molding conditions for obtaining a good molded product are stored in the RAM of the storage device (1) as molding conditions of the model, and if molding conditions are already set for the model, individual The correction value of the molding condition due to the machine difference is stored. In addition, when displaying other information, it is necessary to add arbitrary information such as a quality check point of a molded product, a method of correcting molding conditions for a defective molding state, and the like, and a keyboard (11) of the control device (5). Is operated and input, a CRT screen is displayed, and a write command to the storage device (1) is input. Other information is stored in the storage device (1).
Will be stored. Of course, the above-mentioned operation can be performed by setting to the external device (B) such as the personal computer (B2). The molding conditions and other information relating to the mold (C) are read out and displayed from the storage device (1) fixed to the mold (C) in this manner, and the molding conditions are set. Start the molding operation with reference to other information. When a continuous operation command is input, the injection molding machine (B1)
Starts continuous operation, mold closing, injection, holding pressure, weighing,
Controls the operation of one molding cycle of mold opening, and when one molding cycle is completed, the mold opening / closing switch (SW)
Operates to update the number of shots used in the RAM provided in the storage device (1). When the number of shots used reaches the set number, the operator is notified by a warning or other means. As described above, when the warning or the message prompting the maintenance of the mold is displayed on the CRT screen, the operator stops the operation of the injection molding machine (B1) and performs the maintenance of the mold (C). Then, the maintenance is completed, and the control device (5) and the storage device
When (1) is connected and a maintenance completion command is input, the number of maintenances is counted and stored in the storage device (1). In the maintenance completion process, for example, the i-th maintenance date, the i-th maintenance shot number, the i-th maintenance content, and the (i + 1) -th maintenance scheduled shot number are stored. Each time maintenance is performed, the above contents are stored, and the history of maintenance is stored in the storage device (1). In addition, the storage device (1) is integrated with an IC.
It may be constituted by a card or a magnetic force card. Next, the operation of the secondary power supply (2) will be described. When the mold (C) is not in use, it is stored in one corner of the factory.Every time the type of product changes, the optimal mold (C) is taken out, mounted on the molding machine (B1) and used. become. The used mold (C) is updated in the number of times of use and the like as described above. On the other hand, in the unused mold (C), it is necessary to maintain the final data and, for example, apply rust-preventive oil when the unused time has passed to some extent. The unused time is counted using the built-in timer (T). The secondary power supply (2) is used as an operation source for such an operation, but the amount of power required by the mold maintenance device (A) itself is extremely small. Therefore, the solar cell (3) generates light in response to the light in the factory, and the storage cell (4) stores the electric power, which is used as the driving power of the mold maintenance device (A). The inside of the factory is lit from morning to evening and bright, and during this time the solar cell (3) will continue to generate electricity. In addition, although a factory may take a long vacation, it is necessary that the storage amount of the storage battery (4) can sufficiently cover the vacation. (As described above, since the power consumption of the mold maintenance device (A) is sufficiently small, it is not necessary to increase the power storage amount.) As the external device (B), the molding machine (B) is mainly used.
Although the case 1) has been described, it is needless to say that the present invention is not limited to this, and a personal computer (B2) can also be used. By connecting the mold maintenance device (A) to the personal computer (B2), the personal computer (B2)
It is possible to input data directly to the computer, which makes data management very convenient, and can be backed up, which is very safe. Also, the mold (C) is lent to other molding manufacturers such as subcontractors as necessary, but since the mold maintenance device (A) is attached to each mold (C), mold management is extremely difficult. Has the advantage of being simple and eliminating errors. According to the present invention, there are provided a storage device which is attached to the mold and which can at least write and read information and which can be connected to an external device to perform data processing, and a solar cell and a storage battery. Since the power supply consists of a secondary power supply and a storage device attached to the mold, the mold number, mold manufacturing date, and other information specific to the mold and the necessary items for the mold are stored in the mold. It can be rewritten at any time for each use, which not only makes mold management and maintenance very simple, but also allows the data to be semi-permanently backed up by a secondary power supply composed of a solar cell and a storage battery. It is safe with no loss of data in the storage. Further, unlike the external power supply, the power supply is of a private power generation type, so that a connection cord to the external power supply is not required, and the handling is very convenient. In addition, since the mold maintenance device is attached to the mold itself, if the mold is moved, the data is also moved at the same time, so that mistakes in mold management can be prevented. According to a second aspect of the present invention, the management information of the mold is stored in the storage device, the management information is updated each time the mold is used, and the non-use time is measured when the mold is not used. When the set maintenance point is reached, a maintenance warning is displayed, and after maintenance is performed, the next maintenance point is input and set as management information in the storage device. There is an advantage that mold management can be performed, and data of rust prevention work due to no use of a mold can be obtained. According to the third aspect of the present invention, since a switch for counting the number of times of opening and closing of the mold is installed in the mold, the mold opening and closing switch is operated every time the mold is opened and closed, and the number of shots is constantly monitored. You can do it.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a state where a mold maintenance device of the present invention is mounted on a mold. FIG. 2 is a perspective view of a secondary power supply of the mold maintenance device according to the present invention. 3) Block circuit diagram of mold maintenance device of the present invention [Description of reference numerals] (A): Mold maintenance device (B): External device (B1): Molding machine (C): Mold (1): Storage device (2) Secondary power (3) Solar cell (4) Storage battery (9) LCD display

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B29C 33/70 B22D 17/32

Claims (1)

(57) [Claims 1] is attach to the mold used in the molding machine, gold
It can be written read type management information, and a storage device connected to an external device data processing can be made up of a secondary power comprised in the solar cell and the storage battery, the storage device each time using a mold Mold management information stored in
Update information and measure non-use time when not in use
Displays a maintenance warning when the set maintenance point is reached,
After the maintenance, the next maintenance point is used as management information in the storage device.
Die maintenance device characterized by inputting and setting to