JP5087329B2 - Production display device - Google Patents

Description

  The present invention relates to a production display device for each worker to grasp the target production number, the total number of productions up to now, the current production progress status, etc. in a production site where assembly work is performed by a plurality of workers. .

  The production display device has means for setting the target production number according to the production model and production plan, means for setting the target work time (tact time), and means for inputting the total production number. Information such as the target number of productions obtained, the total number of productions up to now, and the current production progress status is displayed or notified in an easy-to-understand manner to the operator.

  FIG. 4 is an external view of a work time setting device 20 according to the conventional invention, which is developed as indicated by a two-dot chain line and shows the front and back surfaces thereof. When a predetermined set time elapses based on the production pace set by the numerical value setting unit 25 attached to the housing 21, the buzzer 24 sounds each time and “1” is added to the planned number display 22 at the same time. indicate. In addition, when the operator presses the switch that is the result input 26 when a product is completed, and applies a product completion signal, “1” is added to the result number display 23 each time, and the total production is completed. Display a number. This information is connected from the terminal board 27 to the centralized totalizer, and a technique relating to a simplified work time setter configured so that the work time setter 20 operates as a terminal unit of the centralized totalizer is disclosed in Japanese Patent Laid-Open No. 6-1994. 79557 “Simple work time setting device”.

  The target production quantity is a target value for the production quantity for a certain period (for example, one day), and is usually set / input by the administrator and displayed on display means such as a display provided in the production display device. The quantity that must be produced can be recognized by looking at the display.

  The cumulative production number is the cumulative number of productions that have been completed at the present time. Normally, the input is performed by the final inspection operator inputting a signal to the apparatus by an external switch or the like once every time the inspection is completed. This numerical value is also displayed separately on the display means such as a display provided in the production display device, and the operator can recognize the current cumulative production number by viewing the display.

  The production progress status information has more actual production numbers at the current time than the expected number of productions that must be completed at the current time calculated based on the target work time (tact time) set and input by the administrator. This is for displaying whether the amount is small or small on a display means such as a display, and for the worker to recognize the progress status at the present time by viewing the display. As a means of expressing how many (moving) or how few (lagging) as well as whether the current number of production is larger or smaller than the expected number, In some cases, a numerical value is displayed by adding a “−” (minus) sign to the number of displays, an expression method such as changing a light emission color, a notification by a buzzer, or other notifications.

  At assembly production sites, it is common to perform serial assembly work (line production system) where workers are assigned to each process, or parallel assembly work (cell production system) in which each worker is responsible for multiple processes. The production display device employs a large display with high visibility so that all workers can confirm it from a certain distance.

JP-A-6-79557

  When an operator is working in a certain direction as in the line production method, a production display device with good visibility is posted in that direction, and all workers confirm the production display device. It is efficient, but when workers are working in various directions as in the cell production system etc., it is time consuming for all workers to check the production display device in the same direction. Is inefficient and inefficient.

  For this reason, in the cell production method, there is a method of performing the same display on a plurality of production display devices and confirming the display in the direction that each worker is facing, but the same display is displayed on a plurality of production display devices. In order to do this, centralized management cannot be performed unless the input of the external switch for counting the total number of production is connected to multiple production display devices. Since it is necessary to measure time (tact time), it is necessary to start measuring tact time simultaneously on all multiple production display devices, and it is necessary to perform batch management using a computer as a host. There was a problem that it was necessary to carry out incidental work such as construction and program setting, and it became expensive as a whole.

  In addition, since the cell production method is generally used for the production of high-mix low-volume products, the production model is frequently switched, and the number and location of workers change accordingly. The display position of the production display device must be flexibly changed in accordance with this, but the large production display device itself is difficult to move, and the connection wiring of the entire device is troublesome, and the entire process As a result, there was a limit to improving the work efficiency.

  An object of the present invention is to provide a production display device that is inexpensive and convenient to use, does not require another host, and can easily change the number of connections.

A target setting means for setting a target production number and a target work time (tact time) in accordance with a production model and a production quantity, and a result input means for making an input for the total production number, the target setting means, and In a production display device that displays or notifies information such as the target production number obtained from the result input means, the cumulative production number up to the present, and the current production progress status in an easy-to-understand manner , the internal circuit of the production display device includes The main block, sub-block, switch block, input / output block, display block, etc. The number of progresses in the main block comparing the target work time (tact time) with the actual number of production obtained by the result input means while calculating the data, it creates a serial data of the progress and the number of data the target production number and the cumulative production number, before The sub-block converts the serial data into parallel data, the display block uses the parallel data to display numerical values and information, and the internal circuit inputs / outputs the serial data. The data is branched and output to a plurality of master-slave connection connectors of the input / output block to perform input / output of the serial data to the outside of the production display device, and the switch block includes the switch block, The serial data created in the main block is provided in the previous stage to be output to the sub block and the input / output block, and when the switch block is selected to be conductive, the serial data is transferred from the main block to the Output to sub-block and I / O block, select non-conducting in switch block The serial data is not output from the main block to the sub block and the input / output block, and only the data lines of the sub block and the input / output block are connected to each other. And

  In the internal circuit of the production display device, the main block, the sub block, the switch block, the display block, and the input / output block mounted as a master machine of the production display device, the main block, and the When the switch block is not mounted as a slave device of the production display device, a plurality of master-slave connection connectors in the master device and a plurality of master-slave connection connectors in the slave devices -When connected using a slave connection cable, the serial data created in the main block of the master unit is converted into the input / output block and sub-block of the master unit and the input of all connected slave units. Output to output block and sub-block, before The same as the display contents of the master machine, also the production display device for displaying a plurality of said slave units.

  In the internal circuit of the production display device, the main block, the sub block, the switch block, the display block, and the input / output block mounted as a master machine of the production display device, the main block, and the When the switch block is not mounted as a slave device of a production display device, a master-slave connector other than the master-slave connector connected to the master device of the slave device is used. If multiple slave units are connected using a master-slave connection cable, and a plurality of slave units are cascade-connected to a single master unit, the display contents of the master unit are the same. Is a production display device that displays on all slave machines.

  Even in the master machine, by selecting non-conduction in the switch block, only the data lines of the sub block and the input / output block are connected, and another master machine and a master-slave connection cable. The serial data created in the main block of another master machine is output to the sub-block of the master machine where the switch block is disabled, and the same display contents as another master machine Is a production display device that operates as a pseudo-slave machine that can display

  By creating serial data of the target production number, cumulative production number, and progress number in the main block, the data necessary for display on the production display device can be consolidated into one, so there is less connection between production display devices This can be realized by the number of wirings, and the troublesomeness of cable wiring is reduced.

  Serial data created in the main block in the production display unit can be converted from serial data to parallel data in the sub-block, and the numerical values and information necessary for display can be obtained from the data and displayed on the display unit. Whether it is data or serial data input from another production display device, it is possible to display numerical values and information by the production display device alone using the data.

  Since serial data can be branched at the input / output block and the data can be input / output in multiple units, the same data can be input to multiple units at the same time by inputting the data of one production display unit into other multiple production display units. You can share data.

  Since the switch block can be used to select the conduction / non-conduction between the data line of the sub block and the input / output block and the main block, the data created in the main block of the production display device itself or the data from other production display devices Either can be selected and displayed, and can be easily switched according to the status of the production cell.

  By connecting multiple master units and slave units that do not have the main block and switch block installed, serial data created in the main block of the master unit can be connected to all slave units and displayed. The same contents can be displayed on all production display devices without management using a computer or the like. Further, since the slave unit does not have the main block and the switch block mounted, the entire system can be realized at low cost.

  By connecting the master unit to multiple slave units and cascading another slave unit from each slave unit in a tree shape, all the serial data created in the main block of the master unit Since it can be connected to the slave unit and displayed, the necessary number of units can be displayed regardless of the number of master-slave connection connectors, and the slave unit can be installed far away from the master unit. This can be achieved by relaying several slave units.

  By selecting non-conduction on the switch block of the master machine, it is possible to display the same as the content displayed on another master machine, and if the conduction is selected on the switch block, the master machine can be displayed. Since serial data can be output to other slave units, it is possible to flexibly cope with the case where the number of production cells or the number of cells in each cell increases or decreases due to switching between production models and production quantities.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a production display device according to the present invention. FIG. 2 is a schematic diagram in which the production display device according to the present invention is connected as a master machine and a slave machine. FIG. 3 is a schematic diagram in which production display devices according to the present invention are cascade-connected in a tree shape.

  As shown in FIG. 1, the main block 1 of the production display device 10 includes a target production number setting circuit, a target work time setting circuit, and an external switch input circuit. The target production number is set by target setting means 6 such as a rotary switch. And the target work time is set.

  Actual input means 7 such as a switch is connected to the external switch input circuit of the main block 1 by a cable, and the operator pushes the switch once every time a specific work is completed, and the signal is taken into the apparatus. By accumulating this, the total number of production is performed.

  In the main block 1, progress number data is created by calculation such as subtracting from the cumulative production number the expected number that must be finished at the present time calculated based on the target work time. Serial data is also created in which target production data, cumulative production data, and progress data are arranged in sequence.

  The serial data is converted into parallel data of the target production number, the total production number, and the progress number by the serial-parallel conversion circuit of the sub-block 2 of the production display device 10 and displayed on a 7-digit LED or a liquid crystal display with several digits. The information is displayed on the target production number display unit, the total production number display unit, and the production progress information display unit of the display block 5 including the device. The display devices are also driven by the display block drive circuit of the sub-block 2.

  The data lines of the sub-block 2 and the input / output block 4 are connected in a circuit, and are connected to a plurality of master-slave connection connectors (1 to n) via a serial data branch circuit in the input / output block 4. Therefore, with this master-slave connection connector, it is possible to output serial data to the outside of the apparatus or input serial data from the outside of the apparatus via the master-slave connection cable 8. Yes.

  The data lines of the sub-block 2 and the input / output block 4 can be selected between conduction / non-conduction with the main block 1 by a conduction / non-conduction switching switch in the switch block 3.

  In the internal circuit of the production display device 10, the main block 1, the sub block 2, the switch block 3, the display block 5, and the input / output block 4 are all mounted as a master machine 10 a of the production display device 10. When the slave block 10b of the production display device 10 is not mounted with the switch block 3, as shown in FIG. 2, the master-slave connection cable 8 is used between the master-slave connection connectors on both sides. Connected.

  As a result, the serial data created in the main block 1 of the master machine 10a is connected to the input / output block 4 and sub-block 2 of the master machine 10a, and to the input / output block 4 and sub-block 2 of the slave machine 10b. Therefore, the same display contents displayed on the display block 5 of the master machine 10a are also displayed on the slave machine 10b.

  As shown in FIG. 3, for each of the master-slave connection connectors (1-n) of the input / output block 4 in the master machine 10a, the master-slave connection connector of the input / output block 4 of the slave machine 10b Are connected to each of the master-slave connection connectors (1 to n-1) of the input / output block 4 that are not connected to the master unit 10a in the slave unit 10b. On the other hand, another slave device 10b is similarly connected.

  As a result, the serial data created in the main block 1 of the master machine 10a becomes the input / output block 4 and sub-block 2 of the master machine 10a, and the input / output block 4 and sub-blocks of all slave machines 10b cascaded in a tree shape. Since it is connected to the block 2, the same display contents displayed on the display block 5 of the master machine 10a are also displayed on all the slave machines 10b.

  Even in the master machine 10a, only the data lines of the sub-block 2 and the input / output block 4 are connected by selecting non-conduction with the conduction / non-conduction switch in the switch block 3 of the internal circuit. The pseudo slave device 10c can be used.

  If this pseudo slave machine 10c and another master machine 10a are connected using the master-slave connection cable 8, the serial data created in the main block 1 of the other master machine 10a is transferred to the sub slave machine 10c. Since it is connected to the block 2, the same display contents displayed on the display block 5 of another master machine 10a can be displayed on the pseudo slave machine 10c, so that this pseudo slave machine can be used instead of the slave machine 10b. 10c can also be used.

The block diagram which shows schematic structure of the production display apparatus by this invention Schematic of connecting the production display device according to the present invention as a master machine and a slave machine Schematic diagram of production display devices according to the present invention cascade-connected in a tree shape External view of working time setting device according to the conventional invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main block 2 Sub block 3 Switch block 4 Input / output block 5 Display block 6 Target setting means 7 Result input means 8 Master-slave connection cable 10 Production display device 10a Master machine 10b Slave machine 10c Pseudo slave machine 20 Working time setting device 21 Housing 22 Planned number display 23 Actual number display 24 Buzzer 25 Numerical value setting unit 26 Actual input 27 Terminal board

Claims (4)

Has target setting means for setting the target production number and target work time (tact time) according to the production model and production quantity, and results input means for input for cumulative production number,
In the production display device for displaying or notifying information such as the target production number obtained from the target setting means and the actual result input means, the cumulative production number up to the present, and the current production progress in an easy-to-understand manner,
The internal circuit of the production display device consists of a main block, sub block, switch block, input / output block, display block, etc.
In the main block, progress number data comparing the target work time (tact time) and the actual production number obtained by the actual result input means is calculated, and the progress number data , the target production number, and the cumulative production are calculated. Create serial data of numbers ,
In the sub-block, the serial data is converted into parallel data,
In the display block, the parallel data is used to display numerical values and information,
In the input / output block of the internal circuit, branch the serial data,
By outputting to a plurality of master-slave connection connectors of the input / output block,
Performing input / output of the serial data to the outside of the production display device for a plurality of units,
The switch block is provided in a stage before the serial data created in the main block is output to the sub block and the input / output block,
When conduction is selected in the switch block,
The serial data is output from the main block to the sub block and the input / output block,
When non-conduction is selected in the switch block,
The serial data is not output from the main block to the sub block and the input / output block,
A production display device, wherein only the data lines of the sub-block and the input / output block are connected. In the internal circuit of the production display device,
The main block, the sub block, the switch block, the display block, and the input / output block mounted as a master machine of the production display device,
When the main block, and the switch block not mounted as a slave machine of production display device,
When connecting a plurality of master-slave connection connectors in the master unit and a plurality of master-slave connection connectors of the slave units using a master-slave connection cable,
The serial data created in the main block of the master machine is
The input / output block and sub-block of the master machine, and the input / output block and sub-block of all connected slave machines are output,
2. The production display apparatus according to claim 1, wherein the same display contents as the master machine are also displayed on the plurality of slave machines. In the internal circuit of the production display device,
The main block, the sub block, the switch block, the display block, and the input / output block mounted as a master machine of the production display device,
When the main block, and the switch block not mounted as a slave machine of production display device,
Using a master-slave connection connector other than the master-slave connection connector that is already connected to the master device of the slave device, a plurality of other slave devices are connected using a master-slave connection cable,
When multiple slave units are cascade-connected to one master unit in a tree shape,
3. The production display device according to claim 2, wherein the same display contents as the master machine are displayed on all slave machines. Even the master machine
By selecting non-conduction in the switch block,
Only the data lines of the sub-block and the input / output block are connected,
Connect to another master unit using the master-slave connection cable,
By outputting the serial data created in the main block of another master machine to the sub-block of the master machine where the switch block is disabled,
4. The production display device according to claim 2, wherein the production display device is operated as a pseudo-slave device capable of displaying the same display contents as another master device.

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