JPS6331925A - Control system for conveying equipment performing one cycle operation - Google Patents

Abstract

PURPOSE:To facilitate a flexible system design for conveying equipment, by installing plural operating mode control circuits which judges and commands an execution start of one cycle operation. CONSTITUTION:A one cycle operation control circuit 42 is a forward feed one cycle operation control circuit of a conveyor 10 and connected to both oprating mode control circuits 30 and 32. And, a one cycle operation control circuit 44 is a backward feed one cycle operation control circuit of the conveyor 10. Likewise, a one cycle operation control circuit 46 is a forward feed one cycle operation control circuit of a conveyor 12 and connected to operating mode control circuits 36, 38 and 40. Each of these operating mode control circuits 30-40 is constituted so as to input a control starting signal S1 and a starting cndition signal S2. Each of these one cycle operation control circuits 42-46 waits for the next execution starting signal out of these operating mode control circuits 30-40 whena series of control operations are over. Thus a conveying article 18 is smoothly conveyed to the side of a delivery table.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention combines a plurality of drive devices that repeat a series of operations (hereinafter referred to as one-cycle operation) and automatically operates them in a coordinated manner to convey a predetermined article. This invention relates to a control method for IJu feeding equipment.

[Conventional technology]

Conventionally, as a control method for this type of conveyance equipment, a step sequence method is known in which a control circuit is assembled in stages according to the order of automatic operation.

In this step sequence control system, when the driving operation becomes complicated, the number of steps increases and the number of control ff11 circuits increases correspondingly, making it complicated. In addition, when designing such a control circuit, it is necessary to understand all operating operations and assemble each UJ product step by step.
Therefore, even small-scale changes in the operating method require major design changes to the control circuit.

[Problem that the invention seeks to solve]

As mentioned above, in conventional control systems, when the number of conveyance processes increases, the operating method becomes complicated, and the control circuit also becomes complex, making the circuit design extremely complicated, and moreover, it is difficult to change the operating method. The disadvantage is that it is not possible to flexibly handle the control roller operation associated with the feeding process. Also,
Conventional control systems have drawbacks such as an increase in the number of steps, which increases the number of control devices that make up the system, which significantly increases manufacturing costs.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a control system for transport equipment that can easily design a control circuit even for a complicated operating method, and that can easily deal with changes in the design of the control circuit due to changes in the operating method. There is a method to provide.

[Means for Solving the Problems] The control method for the conveying equipment that performs one-cycle operation according to the present invention combines a plurality of conveying devices that perform one-cycle operation and automatically operates these lv conveying devices in a coordinated manner. In a control system for conveyance equipment that conveys articles, an 1-cycle operation control circuit is provided to control the 1-cycle operation of each conveyor, and each of the 1-cycle operation control circuits is controlled at different IF transfer positions of the article. The present invention is characterized by providing a plurality of operation mode control circuits that determine the start of execution of a one-cycle operation and issue instructions.

In the above-mentioned control method for IB transmission equipment, each operation mode control circuit issues an execution start command to each one-cycle operation control circuit when receiving a control start signal and a predetermined starting condition is met, and During operation, the operation control circuit may be configured to hold the signal a, thereby disabling activation conditions for other operation mode control circuits.

[Effect]

According to the control method for a conveyance facility that performs one-cycle operation according to the present invention, one-cycle operation control circuits are provided for controlling one-cycle operation of a plurality of conveyance devices, and each of these one-cycle operation control circuits is provided.
By providing one or more operation mode control circuits that determine and instruct the cycle operation control circuit to start execution of one cycle operation, the operation mode of the conveyance device at different conveyance positions of the article can be appropriately selected and the article can be smoothly transported. In this case, the operation mode of the one-cycle operation control circuit of each transport device can easily realize a flexible system design of the transport equipment by appropriately changing the design of the operation mode control circuit.

〔Example〕

Next, an embodiment of a control system for a conveyance facility that performs one-cycle operation according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a configuration diagram of a conveyance facility showing an embodiment of the control method of the present invention. In FIG. 1, reference numeral 10.12 designates transport devices, each of which is provided with an article support 14, 16. Further, the conveying device 1
A viewing table 20° 22 (in which 18 goods 18 are generally admitted for 0.12 hours) is placed adjacent to the table 22, and an unloading table 24
are arranged similarly. Furthermore, the conveyance device 10°12
In contrast, an article loading device 26 and an article extracting device 26 for loading and unloading the conveyed articles 18 are provided, respectively.

Next, the transport operation of the article 18 in the transport equipment of this embodiment configured as described above and its control system will be explained.

FIGS. 2(1) to 2(6) show the basic operation of the conveyance device shown in FIG. 1. First, the conveyed article 18C (FIG. 2 (1)) carried in by the carry-in table 20 is loaded onto the article support stand 14 by the article loading device 26 [
Figure 2 (2)]. Then, the conveyance device 10 moves upward to lift the article 18 on the article support stand 14 [FIG. 2 (3)], and then advances horizontally to a predetermined position [FIG. 2 (4)].
By further moving downward, the article 18 is placed in a position advanced from the above position on the article support stand 14 [Fig. 2 (5)
]. Thereafter, the conveyance device 10 horizontally retreats back to a predetermined position (FIG. 2, f61) and completes one cycle of small operation. In this way, the conveying device 10 performs one cycle fl
By repeating the operation, the articles 18 can be sequentially transported (in a predetermined direction). It should be noted that the article 18 on the article support stand 16 can also be conveyed using the single-shell conveying device 12 in the same manner as described above.

Next, in the embodiment shown in FIG.
The general goods 18 (generally received by the conveyor 12) are
Accordingly, the article support stand 1 is moved by the one-cycle operation described above.
6 to Keio University. However, in this case, if the article support stand 16 is fully loaded with other articles I8, and there is room for loading the conveyed article 18 on the article support stand 14 on the opposite side, then the conveyance device 10 may The articles on the carry-in table 22 are transported back onto the article support stand 14 by a one-cycle operation consisting of steps opposite to the one-cycle operation shown in FIG.
(see figure). Thereafter, when there is enough room to load the article 18 on the article support stand 16, the article 18 is first conveyed to the lid table 22 by one cycle operation of the TA feeding device 10 [Fig. 4 (11, +21. (41) Then, the article 18 is conveyed onto the article support stand 16 by one cycle of the conveyor 12 [Fig. 4 (51, (61)
, (7), [8), (9)).

In this way, the articles 18 generally transported from the carry-in table 20.22 are transported by the transport device 10.12 into four parts.
When the cycle operation is repeated and the article is conveyed to the end of the article support stand 16, the article is removed from the unloading table 24 by the article extraction device 28.
and are sequentially carried out to predetermined positions.

Next, a control system for the conveyance equipment of this embodiment that performs the operations described above will be explained.

FIG. 5 is a control system diagram of the conveyance equipment of this embodiment. Fifth
In the figure, reference numeral 30. 32°34.36.38
．． Reference numeral 40 indicates an operation mode control circuit that determines whether to start execution of a one-cycle operation, and reference numerals 42, 44, and 46 indicate a one-cycle operation control circuit that controls each one-cycle operation.

In this case, the one-cycle operation control circuit 42
0 forward feed one cycle operation control circuit, and is connected to the operation mode control circuits 30 and 32. Further, the one-cycle operation control circuit 44 is a reverse one-cycle operation control circuit of the transport device 10, and is connected to the operation mode control circuit 34.

Furthermore, the cycle operation control circuit 46 controls the transport device 12.
This is a normal feed one-cycle operation control circuit, and is connected to the operation mode control circuits 36, 38, and 40.

However, each of the operation mode control circuits 30 to 40 is configured to receive a control start signal S1 and a starting condition signal S2, respectively. For example, when the control start signal S1 is input to the operation mode control circuit 30, it is determined whether the AND condition with the activation condition signal S2 is satisfied when the other operation mode control circuits 32 to 40 are not in operation. However, if the above-mentioned conditions are not met, the processing of the operation mode control circuit 30 is terminated, and if the above-mentioned conditions are met, the execution start command signal S3 is sent to the Iff feed device 10 for one cycle of normal feed operation. The output is output to the city control circuit 42, and at the same time, it is stored that the operation mode control circuit 30 is in operation. However, when one cycle operation is completed, a cycle operation end signal C3a is output to the operation mode control circuit 30, and the previously stored signal indicating that the operation mode control circuit 30 is in operation is erased. The operating signal stored in the control circuit 30 is transmitted to the other operation mode control circuits 32 and 40, and when the control start signal S is input, the one-cycle operation control circuit 42, 44, 46 is executed. Used to determine whether to start.

Hereinafter, the operation mode control circuits 32 to 40 operate in the same manner as the operation mode control circuit 30.

Next, the specific control operation of the general transport facility shown in FIG. 1 by the control circuit of this embodiment which performs the control operation in this manner will be explained with reference to the flowchart shown in FIG. 6.

First, the operation mode control circuit 30 inputs the control start signal s1 generated when the first general article 18 is loaded onto the article support stand 14 by the article loading device 26, and inputs the control start signal s1, which is generated when the general article 18 is loaded onto the article support stand 14 by the article loading device 26. 1 only if the AND condition is satisfied
' An execution start signal S is output to the 5-cycle operation fff11 circuit 42. Therefore, when the execution start signal S is inputted, the 1-cycle operation control circuit 42 executes the normal feed 1-41I-cycle operation of the transport device IO, and when the execution is completed, outputs the 1-cycle operation end signal C3a. Then, the operation of the operation mode control circuit 30 ends.

Next, if the transported article 18 is not loaded onto the article support stand 14 even after a certain period of time has elapsed, a control start signal S is sent to the operation mode control circuit 32.

is input and the AND condition with the activation condition signal S2 is satisfied, the one-cycle operation control circuit 3
Similarly to 0, the 1-cycle operation control circuit 42 executes 1-cycle operation, and when it is completed, the 1-cycle operation end signal csb
is output to the operation mode control circuit 32, and the operation is completed.

Further, when the article 18 is conveyed by the carry-in table 22, if the article support stand 16 is fully loaded with other articles to be conveyed, a control start signal S is input to the operation mode control circuit 34. AND with start condition f1 No. S2
Only when the conditions are met, an execution start signal S3 is output to the one-cycle operation control circuit 44. This 1-cycle operation control circuit 44 inputs the execution start signal S, executes a 1-cycle operation for reverse feeding of the conveyance device 10, and when this execution is completed, sends a 1-cycle operation end signal C3a to the operation mode control circuit 34. output and terminate the operation.

On the other hand, when the conveyance article 18 is conveyed by the carry-in table 22, the control start signal S1 is input to the operation mode control circuit 36, and the AND signal with the start condition signal S2 is inputted to the operation mode control circuit 36.
Only when the conditions are met, (1) outputs an execution start signal S to the cycle operation control circuit 46; Therefore, this one-cycle operation control circuit 46 uses the execution start signal S.
By inputting , the forward feeding one cycle operation of the conveying device 12 is executed, and when this execution is completed, the one cycle operation end signal C3a is outputted to the operation mode control circuit 46,
Finish the operation.

After that, if the conveyed article 18 is not conveyed by the carry-in table 22 even after a certain period of time has passed, a control start signal S1 is input to the operation mode control circuit 38, and an AND condition with the start condition signal s2 is established. The execution start signal S3 is output to the 1-cycle operation control circuit 46 only when the 1-cycle operation control circuit 46 is activated.
Executing one cycle operation of the cycle operation control circuit 46,
Upon completion, a one-cycle operation end signal csb is output to the operation mode control circuit 38, and the operation is terminated.

Furthermore, when the jM delivery article 18 on the article support stand 16 is conveyed to the carry-out table 24 by the article extraction device 28,
A control start signal S is input to the operation mode control circuit 4o, and an execution start signal S is output to the one-cycle operation control circuit 46 only when the AND condition with the start condition signal S2 is satisfied. Then, similarly to the operation mode control circuit 36, the 1-cycle operation control circuit 46 executes 1-cycle operation, and when it is completed, the 1-cycle operation end signal C3 is output.
c is output to the operation mode control circuit 40, and the operation is terminated.

In this way, each one cycle operation control circuit 42,
44.46, after completing a series of control operations, waits for the next execution start signal from each of the operation mode control circuits 30, 3234.36, 38.40. In this way, by repeating a series of one-cycle operations, the loading table 2
The conveyed article 18 carried in by .degree. and 22 can be smoothly conveyed to the II output table 24 side.

〔Effect of the invention〕

As is clear from the embodiments described above, according to the present invention, in a conveyance facility that performs automatic operation in a coordinated manner by combining a plurality of one-cycle operations, an l-cycle operation control circuit that controls each individual one-cycle operation; These two circuits can be designed separately by separately providing an operation mode control circuit that determines whether to start execution and issues instructions for each of these one-cycle operation control circuits. Design can be simplified and design changes can be easily made, and the performance of this type of conveyance equipment can be improved and these systems can be constructed at low cost.

Although the preferred embodiments of the present invention have been described above, it goes without saying that various design changes can be made without departing from the spirit of the present invention.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of a conveyance facility showing an embodiment of a control method for a conveyance facility that performs one-cycle operation according to the present invention;
Figures (1) to (6) are illustrations of specific operations of the conveyance equipment shown in Figure 1, and Figures 3 and 4 (11 to (9) are illustrations of overall operation of the conveyance equipment shown in Figure 1). 5 is a block system diagram of a control system that performs control operations for the transport equipment shown in FIG. 1, and FIG. 6 is a flowchart showing the operation of the control system shown in FIG. 5. 10, 12... Loading table 14.16... Article support stand 18... Transport article 20.22...
Carrying-in table 24... Carrying-out table 26...
Article loading device 28... Article extraction device 30.32, 34.36, 38.40... Operation mode control circuit 42.44.46...l cycle operation control ja
n circuit S1...Control start signal s2...Start condition signal S3...Execution start command signal CS a + CS b + CS c...1 cycle operation end signal Patent applicant Fuji Electric Co., Ltd. 1o Nooooo □ 12

Claims (2)

[Claims] (1) In a control system for conveyance equipment that combines multiple conveyance devices that perform one-cycle operation and automatically operate these conveyance devices in a coordinated manner to convey articles, one cycle that controls one-cycle operation of each conveyance device. A conveyance equipment comprising: an operation control circuit; and a plurality of operation mode control circuits for determining and instructing each one-cycle operation control circuit to start execution of one-cycle operation at different transport positions of articles. control method. (2) In the control method for the conveyance equipment as set forth in claim 1, each operation mode control circuit controls each one-cycle operation control circuit when it receives a control start signal and a predetermined starting condition is met. A control system for conveyance equipment, which is configured to issue an execution start command and store and hold the signal during operation of a one-cycle operation control circuit to disable activation conditions for other operation mode control circuits.