JP2873192B2 - Work system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work system configured to perform a predetermined operation on a conveyed object while operating a work device while conveying the conveyed object along a conveyance path.

[0002]

In the FA field and the food processing field, a predetermined operation is performed on a conveyed object while conveying the conveyed object by a belt conveyor. FIG. 15 shows an ink-jet printing system as an example of this work system. Reference numeral 1 denotes a printed material corresponding to a conveyed material, and reference numeral 2 denotes a belt conveyor that conveys the printed material 1 in the direction of arrow A.

In this configuration, the delay time T of the delay timer 3 is set to a value from when the transported object 1 is supplied to the photoelectric sensor 4 to when the printed surface of the transported object 1 is supplied to the ink jet printer 5. When the article 1 is conveyed in the direction of arrow A, first, the photoelectric sensor 4 outputs a work signal (a detection signal of the article 1) to the delay timer 3. Then, the delay timer 3 gives the work signal to the inkjet printer 5 with a delay of time T. Then, the inkjet printer 5 operates at the timing when the printing surface of the transported object 1 is supplied to the work position of the inkjet printer 5, and the printing 1a is performed on the printing surface of the transported object 1.

By the way, in the field of FA in recent years, J
As seen in IT systems, the mainstream is to produce what is needed without inventory and when needed. For this reason, production is performed according to a detailed production plan.
In recent years, in the food processing field, production adjustments are frequently made in accordance with diversification of needs. Therefore, in order to cope with a detailed production plan or frequent production adjustment, it is required to adjust the production amount by changing the conveyance speed of the conveyed object 1 by the belt conveyor 2. On the other hand, in the above-described conventional configuration, every time the transport speed of the transported object 1 is changed, the operator sets the delay time T
The operation of readjusting is required, which causes a significant decrease in productivity.

[0005] As another example of the above-mentioned work system,
There is a small bag charging system in which small containers such as powder soup are charged into a container while a container of cup noodles is transported by a belt conveyor. In this small bag charging system, containers of different sizes are often conveyed on the same belt conveyor. Therefore, even if the conveyance speed of the containers is constant, if the delay time T of the delay timer 3 is not adjusted, the small bag is The loading position is shifted from the center of the container. At the same time, when adjusting the production amount by changing the transport speed of the container, it is necessary to change the delay time of the delay timer every time the transport speed of the container is changed, so that the productivity is significantly reduced. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to change the conveying speed of a conveyed object,
Another object of the present invention is to provide a work system that allows an operator to perform a predetermined work on a work position of a conveyed object without adjusting a delay time even if the length of the conveyed object changes.

[0007]

According to a first aspect of the present invention, there is provided a working system for performing a predetermined operation on a transported object by operating a working device while transporting the transported object along a transport path. A first detecting unit which is arranged at a predetermined distance from the working device in a direction opposite to the conveying direction of the conveyed object, detects the conveyed object and outputs a detection signal, and a detection from the first detecting unit. A predetermined delay time after receiving a detection signal from the first detecting means so as to operate the work device at a timing at which the work portion of the conveyed object is supplied to a work position of the work device based on the signal, Delay means for outputting a work signal to the work device with a delay, the delay means being configured to determine the distance from a transfer end of the conveyed object to a work target portion of the conveyed object and a work position of the work device. 1st detection hand Storage means for storing a ratio of the sum of distances to the object and the length of the conveyed object; and a supply signal for detecting the conveyed object, the storage means being provided on the supply side of the conveyed object with respect to the first detection means. , A measuring means for measuring a time during which a detection signal is output from the second detecting means, and a ratio stored in the storage means and a measurement result of the measuring means. A delay time setting means for changing the setting of the delay time.

According to the above means, when the transported object is detected by the second detecting means, a detection signal is output from the second detecting means. Then, as the following operations (1) to (3) are performed, the working device is operated at a timing at which the work portion of the transported object is supplied to the work position of the work device, and the work device is moved to the work position of the transported object. A predetermined operation is performed. (1) The measuring means measures the detection signal output time from the second detecting means.

(2) The delay time setting means detects the measurement result of the measuring means and stored data (a first detecting means based on a distance from a conveying end of the conveyed object to a work portion of the conveyed object and a work position of the working device). (The ratio of the length of the conveyed product to the sum of the distances to the transported object)).

(3) After receiving the detection signal from the first detection means, the delay means outputs a work signal to the work device with a delay time set by the delay time setting means.

According to a second aspect of the present invention, there is provided a working system configured to perform a predetermined operation on a conveyed object while operating the operating device while conveying the conveyed object along a conveying path. Detecting means which is arranged at a predetermined distance in the direction opposite to the conveying direction of the conveyed object, detects the conveyed object and outputs a detection signal, and the working portion of the conveyed object is based on the detection signal from the detecting means. Delay means for receiving a detection signal from the detection means so as to operate the work apparatus at a timing supplied to a work position of the work apparatus, outputting a work signal to the work apparatus with a predetermined delay time; Wherein the delay means includes a sum of a distance from a transport end of the transported article to a work portion of the transported article and a distance from a work position of the working device to the detection means, and a length dimension of the transported article. When A storage unit in which a ratio is stored, a measurement unit that measures a time during which a detection signal is output from the detection unit, and a measurement of the delay time based on the ratio stored in the storage unit and a measurement result of the measurement unit. It is characterized by having delay time setting means for changing the setting.

According to the above means, when the conveyed object is supplied to the detecting means, the detecting means outputs a detection signal. Then, as the following operations (1) to (3) are performed,
The work device operates at the timing when the work portion of the conveyed object is supplied to the work position of the work device, and the predetermined work is performed on the work position of the conveyed material. (1) The measuring means measures a detection signal output time from the detecting means.

(2) The delay time setting means stores the measurement result of the measuring means and the stored data (the distance from the conveying end of the conveyed object to the work portion of the conveyed object and the distance from the work position of the work device to the detecting means). (The ratio of the sum of the length and the length of the conveyed product).

(3) After receiving the detection signal from the detection means, the delay means outputs a work signal to the work device with a delay time set by the delay time setting means.

According to a third aspect of the present invention, in the work system, the delay time setting means changes the setting of the delay time only when the conveyance speed of the conveyed object changes, and when the conveyance speed of the conveyed object does not change. It is characterized in that the last set value stored in the storage means is used as the delay time. According to the above means, the setting of the delay time is changed only when the transport speed of the transported material changes. Therefore, the processing time of the delay time setting means is reduced.

According to a fourth aspect of the present invention, there is provided a working system, wherein a predetermined operation is performed on the conveyed object while operating the operating device while conveying the conveyed object along the conveying path. A first detection unit that is disposed at a position and detects the conveyed object and outputs a detection signal; and a work part of the conveyed object is moved to a work position of the work device based on the detection signal from the first detection unit. After receiving a detection signal from the first detecting means so as to operate the working device at a timing supplied to the working device, delays a predetermined delay time and outputs a working signal to the working device. A delay unit configured to store a ratio between a distance from a transport end of the transported object to a work portion of the transported object and a length dimension of the transported object; On the supply side of the conveyed material Second detecting means for detecting the conveyed object and outputting a detection signal, measuring means for measuring a time during which the detection signal is output from the second detecting means, and stored in the storage means. And a delay time setting means for setting the delay time based on the measured ratio and the measurement result of the measuring means.

According to the above means, when the conveyed article is supplied to the second detection means, a detection signal is output from the second detection means. Then, as the following operations (1) to (3) are performed, the working device is operated at a timing at which the work portion of the transported object is supplied to the work position of the work device, and the work device is moved to the work position of the transported object. A predetermined operation is performed. (1) The measuring means measures the detection signal output time from the second detecting means.

(2) The delay time setting means converts the measurement result of the measuring means and the stored data (the ratio of the distance from the transport end of the transported object to the work portion of the transported article and the length of the transported article). The delay time of the delay means is set based on the delay time.

(3) After receiving the detection signal from the first detection means, the delay means outputs a work signal to the work device with a delay time set by the delay time setting means.

[0020]

FIG. 1 shows a first embodiment of the present invention.
A description will be given with reference to FIG. In this embodiment, the present invention is applied to an ink jet printing system. First, in FIG. 1, rollers 11a and 11b
, A belt 12 corresponding to a transport path is stretched. The one roller 11b is connected to the motor 13, and when the roller 11b rotates in the direction of arrow A with the driving of the motor 13, the belt 1 is integrated with the roller 11b.
2 rotates in the direction of arrow A, and the printed matter 14
Is transported in the direction of arrow B. Reference numeral 15 denotes the roller 1
1 shows a belt conveyor including 1a, 11b and a belt 12.

An ink jet printer 16 is provided on the belt conveyor 15. The ink jet printer 16 corresponds to a working device, and prints 1
The printing 14a is applied to the printing surface (working portion) of No. 4. Also,
The first photoelectric sensor 17 includes a light emitter 17a and a light receiver 17
b is a transmission type in which the printed matter 14 is opposed to each other. As shown in FIG. I have. Then, the first photoelectric sensor 17
When the printed matter 14 is supplied to the printer 1 and the projection light from the light projector 17a is blocked by the front end of the printed matter 14, the output signal from the first photoelectric sensor 17 is turned off. Note that the first photoelectric sensor 17 corresponds to a first detecting unit.

As shown in FIG. 1, a microcomputer 18 (hereinafter, referred to as a microcomputer 18) corresponding to a measuring means and a storage means (RAM) delay time setting means is connected to the first photoelectric sensor 17, as shown in FIG. . This microcomputer 18
When the output signal of the first photoelectric sensor 17 is turned off,
A work signal for operating the inkjet printer 16 is output with a predetermined delay time. In addition, the microcomputer 18
The printed material 14 is conveyed at a constant speed by rotating the motor 13 at a constant speed via the drive circuit 13a.

The second photoelectric sensor 19 is of a transmission type in which a light projector 19a and a light receiver 19b are arranged to face each other, and supplies the printed material 14 to the first photoelectric sensor 17 (the side opposite to the conveyance direction of the printed material 14). (However, the second photoelectric sensor 19 and the ink jet printer 1
The distance from the work position 6 is a distance at which the printed material to be printed next does not pass through the detection position of the second photoelectric sensor 19 when the work portion of the printed material 14 passes through the work position of the inkjet printer 16. Is desirable). Then, when the print 14 is supplied to the second photoelectric sensor 19 and the projection light from the light projector 19a is shielded by the print 14, the output signal from the second photoelectric sensor 19 is turned off. Note that the second photoelectric sensor 19 corresponds to a second detecting unit.

The second photoelectric sensor 19 has storage means (RA
M), a microcomputer 18 corresponding to delay time setting means and measuring means is connected. The measuring means measures the off time of the second photoelectric sensor 19, and the measured value N of the measuring means is inputted to the storage means (RAM) of the microcomputer 18. Further, a printing parameter P1 is stored in a RAM (corresponding to a storage means) of the microcomputer 18, and the microcomputer 18 stores
Sets the delay time T based on the measured value N of the measuring means and the print parameter P1.

The print parameter P1 is given by the following equation (1). As shown in FIG.
, The distance from the transport end (front end) to the printing surface, L is the first
, The distance from the photoelectric sensor 17 to the working position of the inkjet printer 16, and Y represents the length of the printed matter 14.

P1 = (X + L) / Y (1) The reference numeral 20 in FIG. 2 denotes a delay unit including a storage unit (RAM), a second photoelectric sensor 19, a delay time setting unit, and a measurement unit. .

Next, the operation of the above configuration will be described. At the start, the microcomputer 18 initializes each parameter,
The process proceeds to step S1 in FIG.
When the printed matter 14 is conveyed in the direction of arrow B, the process proceeds to step S2, and the output signal of the second photoelectric sensor 19 is determined.
Here, when the front end of the printed matter 14 is supplied to the second photoelectric sensor 19 and the output signal of the second photoelectric sensor 19 is switched from on to off, the microcomputer 18 proceeds from step S2 to step S2.
Then, the process proceeds to 3 to start the timing operation.

When the microcomputer 18 starts the timing operation,
The process proceeds to step S4, and the output signal of the second photoelectric sensor 19 is determined. Here, when the printed material 14 does not pass through the second photoelectric sensor 19, the output signal of the second photoelectric sensor 19 is turned off, and the microcomputer 18 repeats steps S3 and S4 to obtain the count value. Increment N. Further, when the printed matter 14 passes through the second photoelectric sensor 19 and the output signal of the second photoelectric sensor 19 is turned on, the microcomputer 18 switches from step S4 to step S4.
The process proceeds to 5, and the timer operation is stopped, and the detection signal output time of the second photoelectric sensor 19 (the passage time of the conveyed object 14) obtained from the count value N is substituted for t.

When the microcomputer 18 stops the timing operation, the process proceeds to step S6, where the delay time T is set based on the passing time t of the transported object 14, and then the process proceeds to step S7, where 0 is substituted for the count value N. . The delay time T is the time from when the front end of the printed matter 14 is supplied to the first photoelectric sensor 17 to when the printed surface of the printed matter 14 is supplied to the working position of the ink jet printer 16, and is expressed by the following equation (2). Given by T = t × P1 (2) Expression (2) is derived from expression (4) from expression (3) below.
This is obtained by substituting equation (1) into equation (4).

Y: (X + L) = t: T (3) T = t × (X + L) / Y (4) Next, the microcomputer 18 proceeds to step S 8, and the first photoelectric sensor 17 Is determined. Here, the front end of the printed matter 14 is supplied to the first photoelectric sensor 17,
When the output signal of the photoelectric sensor 17 is switched from ON to OFF, the microcomputer 18 shifts from step S8 to S9 to start a timing operation, and the output of the first photoelectric sensor 17 obtained from the count value N at Td. Substitute the time elapsed since the signal was switched from on to off.

Next, the microcomputer 18 proceeds from step S9 to S10, compares the delay time T with the elapsed time Td, and when the elapsed time Td is smaller than the delay time T, increments the count value N. , And Td, the elapsed time obtained from the incremented N is repeated. When the elapsed time Td becomes larger than the delay time T, the process proceeds from step S10 to S11, and a print signal is output to the inkjet printer 16.

When the microcomputer 18 outputs the print signal, the process shifts from step S11 to S12 to stop the timing operation, shifts from step S12 to S13, and shifts the count value N
To 0. When the microcomputer 18 substitutes 0 for the count value N, the microcomputer 18 returns to step S2, and returns to step S2.
Repeat ~ 13. Accordingly, the inkjet printer 16 operates at the timing when the printing surface of the printed matter 14 is supplied to the work position of the inkjet printer 16, and the printing surface 14a of the printed matter 14 is printed.

According to the above embodiment, as shown in FIG. 4A, the state in which the conveyance speed of the printed material 14 by the belt conveyor 15 is V, and as shown in FIG. Is changed to V ′ (<V), the OFF signal output time of the second photoelectric sensor 19 (the passage time of the printed material 14) changes from t to t ′. Then, according to the change of the OFF signal output time, the delay time is T (= t · P1).
Is automatically changed to T ′ (= t ′ · P1), so that the print surface 14a is printed on the print surface of the print 14 without being affected by the change in the transport speed.

For this reason, even if the transport speed of the printed material 14 is changed, the operator does not need to adjust the delay time T, so that it is possible to sufficiently cope with a fine production plan or frequently performed production adjustment. The performance is improved.

Next, a second embodiment of the present invention will be described with reference to FIGS.
It will be described based on. The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Hereinafter, only different members will be described.

First, in FIG. 5, the photoelectric sensor 21 is of a transmission type in which a light projector 21a and a light receiver 21b are arranged to face each other, and as shown in FIG. It is arranged in the transport direction at a distance L (L is preferably a distance at which the next print is not detected by the detecting means when the print position of the print 14 passes through the print position of the inkjet printer 16). I have.

Then, as shown in FIG.
1 is connected to a microcomputer 18 corresponding to a measuring unit, a storing unit (RAM), and a delay time setting unit, and the measuring unit measures an off time of the photoelectric sensor 21. Incidentally, the photoelectric sensor 21 corresponds to a detecting means. Reference numeral 20 'in FIG. 6 denotes a delay unit including a storage unit (RAM), a photoelectric sensor 21, a delay time setting unit, and a measurement unit.

Next, the operation of the above configuration will be described. The microcomputer 18 is initialized at the start, and proceeds to step S21 in FIG.
Is transported in the direction of arrow B, the process proceeds to step S22,
The output signal of the photoelectric sensor 21 is determined. Here, when the front end of the printed matter 14 is supplied to the photoelectric sensor 21 and the output signal of the photoelectric sensor 21 is switched from on to off, the microcomputer 18 shifts from step S22 to S23, and starts the timing operation.

When the microcomputer 18 starts the clocking operation,
The process proceeds from step S23 to S24, and while the output signal of the photoelectric sensor 21 is off, the count value N is incremented. When the output of the photoelectric sensor 21 switches from off to on, the process proceeds from step S24 to S25, and The operation is stopped, and the detection signal output time (transit time of the conveyed object) of the photoelectric sensor 21 obtained from the count value N is substituted for t.

When the microcomputer 18 stops the timing operation,
The process proceeds from step S25 to S26, and after setting the delay time T based on the passing time t, the process proceeds from step S26 to S27, restarts the timekeeping operation, and substitutes the elapsed time obtained from the count value N for Td. . Next, the process proceeds from step S27 to S28, where the delay time T and the count value N
Is compared with the elapsed time Td from when the output signal of the photoelectric sensor 21 obtained from the above changes from on to off.

Here, the elapsed time Td is calculated from the delay time T.
Is smaller, the count value N is incremented, the elapsed time is substituted for Td again, the comparison with the delay time T is performed, and steps S27 to S28 are repeated. When the elapsed time Td becomes larger than the delay time T, Step S28
Then, the process goes to S29 to output an operation signal to the inkjet printer 16. Therefore, the inkjet printer 16 operates at the timing when the printing surface of the printed matter 14 is supplied to the work position of the inkjet printer 16, and the printing 14a is performed on the printing surface of the printed matter 14.

When the microcomputer 18 outputs a work signal to the ink jet printer 16, the process shifts from step S29 to S30 to stop the timing operation. When the timing operation is stopped, the process proceeds from step S30 to S31, where 0 is substituted for the count value N, and when the count value is cleared,
The process returns from step S31 to S22, and repeats steps S22 to S31.

According to the above embodiment, as shown in FIG. 8A, from the state in which the transport speed of the printed matter 14 is V, as shown in FIG. V '
, The OFF signal output time of the photoelectric sensor 21 (the passage time of the printed matter 14) changes from t to t ′. Then, the delay time becomes T according to the change of the OFF signal output time.
Since the setting is automatically changed from (= t.P1) to T '(= t'.P1), the print 14a is printed on the print surface of the print 14 without being affected by the change in the transport speed. In addition, since the single photoelectric sensor 21 can cope with a change in the transport speed, the configuration is simplified.

Next, a third embodiment of the present invention will be described with reference to FIG. The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Hereinafter, only different members will be described.

When the microcomputer 18 stops the clocking operation in step S5, the microcomputer 18 substitutes the detection signal output time of the second photoelectric sensor 19 obtained from the count value N (the passage time of the conveyed object 14) into t. Next, the process proceeds to step S14, and the transit time t of the conveyed object obtained from the count value N and the transit time to obtained from the previous measurement result are defined by the conditional expression to-α <t <t.
o + α (where α is the conveyed object 14
Is a permissible error for compensating for variations in t due to the width Y and error of the product and the transport state of the transported object 14, and performing efficient determination.
relatively small value for t).

Here, if the current passage time t is different from the previous passage time to by the allowable difference α or more, the process proceeds from step S14 to S15 similarly to the start time. In S15, the microcomputer 18 substitutes the obtained transit time t for to. Next, the microcomputer 18 performs steps S15 to S6.
Then, the delay time T is calculated based on the obtained passage time t of the conveyed article 14 to change the setting. After setting the delay time, the microcomputer 18 proceeds from step S6 to S7, and substitutes 0 for the count value N.

However, if there is no change in the transport speed, the transport time t of the preceding and following transported articles 14 is almost the same each time, and the microcomputer 18 shifts from step S14 to S7 and substitutes 0 for the count value N. Next, the microcomputer 18 performs steps S8 to S9, S10, S1 similarly to the first embodiment.
The process proceeds to steps S1, S12, and S13, and returns to step S2 to repeat the above operation.

According to the above embodiment, the measured value of the current measuring means is compared with the measured value which has already been measured.
The microcomputer 18 changes the setting of the delay time T only when a change in the transport speed of the printed material 14 is detected and the transport speed of the printed material 14 changes. For this reason, when the transport speed is constant, the microcomputer 18 outputs the print signal according to the delay time T which is already set, so that the processing time is reduced.

Next, a fourth embodiment of the present invention will be described with reference to FIG. The same members as those in the second embodiment are denoted by the same reference numerals, and description thereof will be omitted. Hereinafter, only different members will be described.

When the microcomputer 18 stops the timing operation in step S25, the detection signal output time of the photoelectric sensor 21 obtained from the count value N at t (the passage time of the conveyed object 14).
Is assigned. Next, the process proceeds to step S32, in which the transit time t of the conveyed object obtained from the count value N and the transit time to obtained from the previous measurement result are defined by the conditional expression to-α <t <to +
A comparison is made using α (where α is an allowable error for compensating for the width Y and error of the conveyed object 14 and variations in t due to the conveyed state of the conveyed object 14 and performing efficient judgment. Relatively small value). Here, if the current passage time t is different from the previous passage time to by the allowable difference α or more, the process proceeds from step S32 to S33 similarly to the start time, and the obtained passage time t is substituted for to. next,
The microcomputer 18 proceeds from step S33 to S26, and calculates the delay time T based on the obtained passage time t of the transported object 14 and changes the setting. Next, the microcomputer 18 determines in step S
The process proceeds from S26 to S27, and the timing operation is restarted.

However, if there is no change in the transport speed, the transport time t of the transported object 14 is almost the same each time, and the microcomputer 1
8, steps S32 to S27, S28, S29, S
The flow shifts to steps S30 and S31 to output a work signal after delaying the set delay time T as in the second embodiment, and returns to step S21 again to repeat the above operation.

According to the above embodiment, the measurement value of the current measuring means is compared with the measurement value which has already been measured.
The microcomputer 18 changes the setting of the delay time T only when a change in the transport speed of the printed material 14 is detected and the transport speed of the printed material 14 changes. For this reason, when the transport speed is constant, the microcomputer 18 outputs the print signal according to the delay time T which is already set, so that the processing time is reduced.

Next, a fifth embodiment of the present invention will be described with reference to FIGS. In this embodiment, the present invention is applied to a small bag charging system, and the same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Hereinafter, only different members will be described. I do. First,
In FIG. 11, a plurality of cup noodle containers 22 corresponding to a conveyed object are set on the belt 12 of the belt conveyor 15, and when the belt conveyor 15 is operated, the plurality of containers 22 are conveyed in the direction of arrow B. You.

The belt conveyor 23 is a belt conveyor 15
The continuous small pouches 24 are set on the belt conveyor 23. The continuous small bag body 24 is composed of a plurality of small bags 24a containing powdered soup, oysters, and the like. When the belt conveyor 23 operates, the continuous small bag body 24 is transported in the direction of arrow C.

The cutting device 25 is provided on the transport path of the continuous pouch 24 and is connected to the microcomputer 18. Then, the microcomputer 18 cuts the continuous pouches 24 and separates them into the pouches 24a by operating the cutting device 25 at a predetermined timing.

The small bag charging device 26 corresponds to a working device, and includes a plunger (not shown) located at the intersection of the transport path of the container 22 and the transport path of the continuous small bag body 24, and a cylinder for moving the plunger up and down. (Not shown). The cylinder of the small bag charging device 26 is connected to the microcomputer 18, and the microcomputer 18
The plunger is lowered by operating the cylinder, and the small bag 24a is pushed down into the container 22 by the plunger.

The motor 13 for driving the belt conveyor 23 is connected to a microcomputer 18 via a drive circuit 13a. The microcomputer 18 operates the belt feeding device 26 so that the small bag 24a can be loaded into the container 22. The conveyor 23 is operated in synchronization with the belt conveyor 15.

The RAM (storage means) of the microcomputer 18 stores a drop-down parameter P2 (= 0.5), and the microcomputer 18 detects the detection signal output time of the second photoelectric sensor 19 obtained from the count value N. The delay time is set on the basis of the (transported object passage time) and the drop-down parameter P2. In this case, in FIG. 12, if the small bag 24a is pushed down into the center of the container 22, X = Y / 2. Also,
Since the first photoelectric sensor 17 is arranged at the work position of the small bag insertion device 26, L (the distance from the work position of the small bag supply device 26 to the first photoelectric sensor 17) = 0. Therefore, equation (1) becomes like equation (1 ′), and as a result,
P2 = 0.5 is derived.

P 2 = (Y / 2) / Y (1 ′) Next, the operation of the above configuration will be described. Microcomputer 18
Is initialized at the start, the process proceeds to step Q1 in FIG. 13, the motor 13 is operated, and when the container 22 is transported in the direction of arrow B, the process proceeds to step Q2 to determine the output signal of the second photoelectric sensor 19. I do. Here, the container 22 is the second
When the output signal of the second photoelectric sensor 19 is turned off, the microcomputer 18 proceeds to step Q3 and starts the timekeeping operation.

When the microcomputer 18 starts the timing operation,
The process proceeds to step Q4, where the output signal of the second photoelectric sensor 19 is determined. Here, the container 22 is the second photoelectric sensor 1
9 and the output signal of the second photoelectric sensor 19 is turned on, the microcomputer 18 proceeds to step Q5 and stops the timing operation.

When the microcomputer 18 stops the timing operation,
The detection signal output time of the second photoelectric sensor 19 (the passage time of the container 22) obtained from the count value N is substituted for t.
Next, the process proceeds to step Q6, where a delay time T is set based on the passing time t. When the setting is completed, step Q7
Then, 0 is substituted for the count value N.

The delay time T is the time from when the container 22 is supplied to the first photoelectric sensor 17 to when the central portion of the container 22 is supplied to the working position of the small bag charging device 26.
Since P2 = 0.5, it is given by the following equation (2 ').

T = 0.5 × t (2 ′) After substituting 0 for the count value N, the microcomputer 18 proceeds to step Q 8, and determines the output signal from the first photoelectric sensor 17. Then, the container 22 is the first photoelectric sensor 1
When the output signal of the first photoelectric sensor 17 is switched from ON to OFF, the microcomputer 18 proceeds to step Q9.
Then, the timer operation is started, and the elapsed time obtained from the count value N is substituted for Td.

Next, the microcomputer 18 proceeds from step Q9 to Q10, compares the delay time T obtained at Q6 with the elapsed time Td from the output off of the photoelectric sensor 17 obtained from the count value N, and Elapsed time Td over time T
Is smaller, the count value N is incremented, and the elapsed time obtained from the count value N is substituted into Td again. Then, when the elapsed time Td becomes longer than the delay time T, a work signal is given to the small bag charging device 26.

When the microcomputer 18 gives the work signal to the small bag input device 26, the microcomputer 18 proceeds from step Q11 to Q12,
The timer operation is stopped, and the process proceeds to step Q13 to substitute 0 for the count value N. As a result, the plunger descends at the timing when the center of the container 22 is supplied to the plunger of the small bag charging device 26, and the small bag 24a is positioned at the center of the container 22.
Is dropped. When the microcomputer 18 drops the small bag 24a into the container 22, the microcomputer 18 returns to step Q2, and returns to step Q2.
2 to Q13 are repeated.

According to the above embodiment, as shown in FIG. 14A, the container 22 is changed from the state where the length dimension of the container 22 is Y, and as shown in FIG. Container 2
When the length dimension of Y 2 becomes Y ′ (> Y), the OFF signal output time of the second photoelectric sensor 19 (the passage time of the container 22) becomes t.
To t ′. Then, the delay time changes from T (= tP1) to T '(= t
'・ P1), the setting is automatically changed to the small bag 24a at the center of the container 22 without being affected by the length of the container 22.
Is dropped.

For this reason, even if the length of the container 22 is changed, it is not necessary for the operator to adjust the delay time T.
It can fully cope with the small bag feeding system transported by. At the same time, it is possible to sufficiently cope with a detailed production plan or frequently performed production adjustment, and as a result, productivity is improved.

In the fifth embodiment, the container 22
From the necessity of dropping the pouch 24a into the center of the
, But is not limited to this.
If it is necessary to push down the small bag 24a at the end of No. 2, a value other than 0.5 may be set.

In the first to fifth embodiments,
The transmission type photoelectric sensor 17 is illustrated as the first detection unit, the transmission type photoelectric sensor 19 is illustrated as the second detection unit, and the transmission type photoelectric sensor 21 is illustrated as the detection unit. However, the present invention is not limited to this, and a reflective photoelectric sensor, a limit switch, or the like may be used as each detection unit.

In the first to fifth embodiments,
Although the processing is performed by software using the microcomputer 18 corresponding to the measuring means, the delay time setting means, and the storage means (RAM), the processing may be performed by hardware using the circuit corresponding to each means. It is not limited to either.

In the first to fifth embodiments,
Although the count value N counted by the measuring means was converted into a unit of time, the transit time and the elapsed time were obtained, and the delay time and the elapsed time obtained from the transit time were compared.
It is not necessary to convert the count value N into a unit of time. For example, a count value corresponding to a delay time is obtained from a count value corresponding to a passage time of a conveyed object, and a count value N corresponding to an elapsed time and a delay time are calculated. Corresponding count value N
May be compared directly. For this reason, the calculation for converting to the time unit can be omitted, and the processing time is shortened.

In the first to fifth embodiments,
Although the RAM is used as the storage means, it is not necessarily limited to the RAM, and EPROM, EE
There is no problem even if a storage means such as a PROM is used.
The parameters P1 and P2 may be stored in the ROM, and the measured value of the measuring means and the delay time may be stored in the RAM.

In the first to fourth embodiments,
The present invention is applied to an ink jet printing system, and in the fifth embodiment, applied to a small bag charging system. However, the present invention is not limited to this, and the present invention can be applied to all work systems that synchronize the conveyance speed of a conveyed object with the activation of a work device by using detection means such as a sensor.

[0074]

As is apparent from the above description, the working system of the present invention has the following effects. According to the first aspect, the delay time of the delay unit can be automatically adjusted according to the transport speed of the transported object. This eliminates the need for the operator to adjust the delay time according to the transport speed of the transported object, thereby improving productivity. According to the second aspect, the delay time of the delay unit can be automatically adjusted in accordance with the transport speed of the transported object, so that productivity is improved. At the same time, the number of detecting means for detecting the transported object can be reduced, so that the configuration is simplified.

According to the third aspect, the setting of the delay time is not changed when the conveying speed of the conveyed object does not change, so that the processing time is shortened. According to the fourth aspect, the setting of the delay time is automatically performed according to the length of the conveyed object. This eliminates the need for the operator to adjust the delay time according to the length of the conveyed object, thereby improving productivity.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing a first embodiment of the present invention (schematic diagram of an ink jet printing system).

FIG. 2 is a side view of the inkjet printing system.

FIG. 3 is a diagram showing control contents of a control device.

FIG. 4 is a time chart showing an output signal from a first photoelectric sensor, an output signal from a second photoelectric sensor, and an output signal from a delay timer.

FIG. 5 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 6 is a diagram corresponding to FIG. 2;

FIG. 7 is a diagram corresponding to FIG. 3;

FIG. 8 is a diagram corresponding to FIG. 4;

FIG. 9 is a view corresponding to FIG. 3, showing a third embodiment of the present invention.

FIG. 10 is a view corresponding to FIG. 3, showing a fourth embodiment of the present invention;

FIG. 11 is a view corresponding to FIG. 1 showing a fifth embodiment of the present invention (schematic diagram of a small bag charging system).

FIG. 12 is a diagram corresponding to FIG. 2;

FIG. 13 is a diagram corresponding to FIG. 3;

FIG. 14 is a diagram corresponding to FIG. 4;

FIG. 15 is a diagram corresponding to FIG. 1 showing a conventional example.

[Explanation of symbols]

12 is a belt (conveyance path), 14 is a printed matter (conveyance),
16 is an ink jet printer (working device), 17 is a first photoelectric sensor (first detecting means), 18 is a control device (signal output means, storage means, calculating means), and 19 is a second photoelectric sensor (second detecting means). , 21 is a photoelectric sensor (detecting means), 22 is a container (conveyed object), 23 is a belt conveyor, 24 is a continuous small bag, 25 is a cutting device, and 26 is a small bag feeding device (working device).

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B41J 2/01 B65G 43/00 B23Q 41/02

Claims (4)

(57) [Claims] 1. A work system configured to perform a predetermined operation on a conveyed object while operating a work device while conveying the conveyed object along a conveyance path, wherein the work device is configured to perform a predetermined operation on the conveyed object. A first detecting means for detecting the conveyed object and outputting a detection signal, based on a detection signal from the first detecting means, After receiving a detection signal from the first detection means so as to operate the work device at a timing when the work device is supplied to the work position, the work signal is output to the work device with a predetermined delay time. A delay unit, the delay unit comprising: a sum of a distance from a conveying end of the conveyed object to a work portion of the conveyed object and a distance from a work position of the working device to the first detecting unit; Conveyed object length Storage means for storing a ratio with respect to the first detection means, a second detection means arranged on the supply side of the article with respect to the first detection means, and detecting the article and outputting a detection signal; Measuring means for measuring the time during which the detection signal is output from the detecting means, and delay time setting means for changing the setting of the delay time based on the ratio stored in the storage means and the measurement result of the measuring means. A working system comprising: 2. A work system configured to perform a predetermined operation on a conveyed object while operating a work device while conveying the conveyed object along a conveyance path. Detecting means for detecting the conveyed object and outputting a detection signal, and a work portion of the conveyed object is located at a working position of the working device based on the detection signal from the detecting means. Delay means for receiving a detection signal from the detection means so as to operate the work apparatus at the supplied timing and outputting a work signal to the work apparatus with a predetermined delay time delay; The ratio of the sum of the distance from the transport end of the transported object to the work portion of the transported object and the distance from the working position of the working device to the detection means and the length of the transported object is stored. Note Means, a measuring means for measuring a time during which a detection signal is output from the detecting means, and a delay time for changing the setting of the delay time based on a ratio stored in the storage means and a measurement result of the measuring means. A work system comprising: setting means. 3. The work system according to claim 1, wherein the delay time setting means changes the delay time setting only when the conveyance speed of the conveyed object changes. 4. A work system configured to perform a predetermined operation on a transported object while operating a work device while transporting the transported object along a transport path, wherein the work system is arranged at a work position of the work device, First detection means for detecting a conveyed object and outputting a detection signal; and at a timing at which a work portion of the conveyed object is supplied to a work position of the work device based on the detection signal from the first detection means. Delay means for receiving a detection signal from the first detection means so as to operate the work apparatus, and then outputting a work signal to the work apparatus with a predetermined delay time delay, the delay means comprising: Storage means for storing a ratio between a distance from a transport end of the transported article to a work portion of the transported article and a length dimension of the transported article; and a supply side of the transported article to the first detection means. And the conveyed article A second detection unit that detects and outputs a detection signal; a measurement unit that measures a time during which the detection signal is output from the second detection unit; and a ratio stored in the storage unit and the measurement unit. A delay time setting means for setting the delay time based on a measurement result.