JPH0623404Y2 - Work transfer pallet identification flag setting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to an identification flag setting device for a work transfer pallet applied to, for example, an assembly line of vehicle parts.

<< Prior Art >> For example, in an automatic assembly line for vehicle parts, it is known to assemble a plurality of vehicle types on the same line.
In this case, the work, which is a vehicle component, is separately loaded on the pallet according to the vehicle type and carried into the line. Then, the equipment attached to the line reads the identification flag movably provided on the pallet by a flag reading device of a required station, and performs a predetermined assembling operation according to the work of each vehicle type.

By the way, a drive mechanism for driving the identification flag corresponding to the work to be placed is provided in the first process of the assembly line, but if the identification flag does not operate normally, malfunctions or damage due to erroneous assembly of the work, etc. Because there is a risk of
It is necessary to check whether the identification flag is operating normally.

Therefore, conventionally, the on / off state is changed according to the operating position of the identification flag.
An identification flag detecting means that is turned off to check the drive state of the identification flag is provided together with the drive mechanism so as to ensure the normal operation of the identification flag.

It should be noted that the identification flag is reset to the initial position by the reset means when the assembly of the work of the current time is finished and the work is carried out from the line (at the time of reset).

<Problems to be solved by the invention> By the way, when the identification flag detecting means has an abnormality due to a disconnection of a signal line or the like, the drive state of the identification flag cannot be surely checked, so that it is necessary to detect this in advance. is there. However, providing a special device for such a preliminary check of the identification flag detection means complicates the configuration and is difficult in practice.

The present invention has been made in view of such circumstances, and an object thereof is to provide an identification flag setting device for a work transfer pallet, which has a simple structure and can easily and reliably determine the presence or absence of an abnormality such as a wire break.

<< Means for Solving the Problem >> The present invention outputs an operation command according to the type of a work to a line-attached device to a work transfer pallet in which a plurality of types of works are mounted for each type and a conveyor line is transferred. While the movable identification flag for the identification flag is provided, on the conveyor line side, a flag driving mechanism that drives the identification flag, and an identification flag that is turned on / off according to the operation position of the identification flag to check the driving state of the identification flag Detecting means, resetting means for resetting the identification flag to the initial position at the time of resetting, and an object to be detected which is provided in the movable part of the resetting means and generates an on / off signal to the identification flag detecting means in accordance with the resetting operation It is characterized by that.

<Operation> According to the identification flag setting device for a work transfer pallet according to the present invention, an on / off signal is generated in the identification flag detection means by the detected element of the reset means each time the identification flag is reset. If an abnormality such as a disconnection occurs in the identification flag detecting means, signal transmission or the like is not performed in the disconnection portion, and this is detected at the reset stage. Therefore, the abnormality check of the identification flag detecting means itself can be surely performed at the stage of resetting the identification flag, that is, before the next flag identification setting. Moreover, since the detected element has a configuration that uses the reset means, it is not necessary to provide a device or the like for a special preliminary check, and can be simply configured.

<< Embodiment >> An embodiment of the present invention will be described below with reference to the drawings.

1 is a side view showing an identification flag setting device for a work transfer pallet according to this embodiment, FIG. 2 is a plan view thereof, and FIG.
The figure is a side view of the main part.

The present invention is basically movable to output an operation command corresponding to the type of work to a line-attached device to a work transfer pallet 1 on which a plurality of types of works are mounted for each type and which is transferred on a conveyor line. While the identification flag 5 is provided, a flag drive mechanism 9 that drives the identification flag 5 on the conveyor line side, and an identification that is turned on / off according to the operating position of the identification flag 5 to check the drive state of the identification flag 5 Flag detection means 15 and identification flag 5 at reset
Is reset to an initial position, and a detection element 18 is provided in a movable part of the reset means 11 and generates an on / off signal to the identification flag detection means 15 in accordance with the reset operation. .

In this embodiment, as shown in FIG. 1, the work transfer pallet 1 is transferred in one direction (the paper surface direction in FIG. 1) by the transfer roller 2 for the automatic assembly line configuration. An identification flag setting device 4 for the work transfer pallet 1 is installed on a base 3 that supports the transfer rollers 2.

The identification flag setting device 4 has a plurality of identification flags 5 for outputting an operation command according to the type of work to be assembled to a line attachment device (not shown). As shown in FIGS. 1 and 2, each identification flag 5 is composed of mutually parallel sliding rods 7 supported so as to be able to reciprocate in a certain range in the axial direction, and a collar 8 is provided at one end of each sliding rod 7. Are provided respectively. Each of the collars 8 is pushed in one direction (indicated by an arrow A) by the drive rods 10 of a plurality of air cylinders 9 as a flag drive mechanism. An operation signal corresponding to the type of work is input to the air cylinder 9 from an external input device (not shown), and the drive rod 10 of the air cylinder 9 driven based on the input signal is connected to the collar 8 of the sliding rod 7. Push. And A
By the combination of the sliding rods 8 which are operated in the direction, an operation command is output from the signal generating means (not shown) to the line-attached equipment.

Further, reset means 11 is provided for resetting the identification flag 5 moved in the A direction in the initial position direction (direction of arrow B) when the assembly of the work at that time is completed and is carried out from the line (at the time of reset). There is. The reset means 11 is connected to a return cylinder 12 provided on the base 3 in parallel with the air cylinder 9 as a flag drive mechanism, and a drive rod 13 of the return cylinder 12, and is connected to a slide rod 7 as an identification flag 5. It is constituted by an angle-shaped pressing member 14 having an L-shaped cross section, which engages with the collar 8 and pulls them all back in the B direction at the same time.

Then, when the identification flag is set, a plurality of air cylinders 9 as a flag drive mechanism are driven, whereby the predetermined identification flag 5 moves in the A direction, and at the time of resetting, the return cylinder 12 as the reset means 11 is driven. By this, the identification flag 5 is reset in the B direction.

Further, an identification flag detecting means 15, a flag driving mechanism detecting means 16 and a reset detecting means 17 are provided in order to check that the above operation is actually performed. Each of these detection means 15, 16 and 17 is composed of, for example, proximity switches 15a, 16a and 17a,
The positions of the collar 8 of the identification flag 5, the rear end of the drive rod 10 of the air cylinder 9 as a flag drive mechanism, and the rear end of the drive rod 13 of the reset means 11 are respectively detected. Then, the proximity switches 15a, 16a, 17a are turned on / off according to the respective operating positions of the identification flag, the flag drive mechanism, and the reset means, and the actual drive state of the identification flag is checked.

By the way, the resetting means 11 reciprocates along with the resetting operation, and comes in contact with and separates from the identification flag detecting means 15 to turn on.
It has a detected element 18 forcibly generating an off signal. That is, as shown in FIG. 3, the pressing piece portion 14a of the pressing member 14 having an L-shaped cross section as the reset means 11 is partially extended, and this portion is used as the detected element 18. The detected element 18 is brought into contact with or separated from the proximity switch 15a as the identification flag detecting means 15 to generate an ON / OFF signal. In addition, 19 is a pressing member 1.
4 is a guide rod that supports both end portions of 4 while guiding the movement thereof.

With such a configuration, an on / off signal is generated by the detected element 18 of the reset means 11 to the identification flag detection means 15 every time the identification flag 5 is reset. If an abnormality such as a disconnection occurs in the identification flag detecting means 15, there is no signal transmission in the disconnection portion, so that it is detected in the reset stage. Therefore, the abnormality check of the identification flag detecting means 15 itself is based on the identification flag 5
It can be surely performed in the reset stage of, that is, the stage before the next identification setting. Moreover, since the detected element 18 is configured to use the reset means 11, the configuration is simple,
It can be easily adopted.

<< Advantages of the Invention >> As described above, according to the identification flag setting device for a work transfer pallet according to the present invention, disconnection of the identification flag detecting means itself can be performed by the detected object using the reset means for the next identification setting. It is possible to check at the stage before, and there is no need to provide a special preliminary check device, etc., with a simple configuration,
The effect that the abnormality check can be performed easily and surely is exhibited.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of an identification flag setting device for a work transfer pallet according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a side view of essential parts. 1 ... Work transfer pallet 5 ... Identification flag 9 ... Flag drive mechanism (air cylinder) 11 ... Reset means 15 ... Identification flag detection means 18 ... Detected element

Claims (1)

[Scope of utility model registration request] 1. A movable identification flag for outputting an operation command according to the type of the work to a line-equipped device on a work transfer pallet that carries a plurality of types of works for each type and is transferred on a conveyor line. On the other hand, on the conveyor line side, a flag drive mechanism for driving the identification flag, and an identification flag detection means for checking the drive state of the identification flag which is turned on / off according to the operating position of the identification flag, A reset means is provided for resetting the identification flag to an initial position at the time of resetting, and an object to be detected which is provided in a movable portion of the reset means and generates an on / off signal to the identification flag detecting means in accordance with the reset operation. An identification flag setting device for a work transfer pallet characterized by the above.