JPH0533476Y2 - - Google Patents

Description

[Detailed description of the invention] A. Industrial application field The present invention relates to a plate end detection device, and more specifically, a detection mechanism that reliably detects the final end of the plate is provided to ensure that the plate is loaded at the storage position. This invention relates to a board end detection device.

B. Technical background of the invention and its problems Conventionally, in a plate processing machine such as a punch press or a shearing machine, there is a device as shown in FIG. 6 for conveying processed plate materials.

The plate material P processed by the punch press 101 is carried out by a plate material gripping device 105 equipped with a gripping part 103 at its tip for gripping one end of the plate material P. This plate material gripping device 105 is movable on a guide rail 107. It is suspended by a motor or the like (not shown) via a chain or the like and driven by a motor (not shown).

It should be noted that a photoelectric terminal detection device 109 fixed during the conveyance of the plate material P is provided, and this terminal detection device 1
When the end of the plate P passes through 09, the plate gripping device 1
05 stops, and the plate material P is placed on the pallet 113 placed on the lifter table 111 in the storage position.

However, when transporting a board whose surface is warped due to holes made with a punch press, etc.
When transporting plate materials with relatively large holes, it is easy for the terminal detector to mistakenly detect the end of the plate, resulting in a malfunction. There were problems such as the load shifting at certain positions.

In order to prevent this, there is a method of mechanically (such as a flapper) to accurately stop the board at the storage position, but this method currently has problems such as expensive equipment.

C. Purpose of the invention This invention was created in view of the problems mentioned above.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a board end detection device that is equipped with a detection mechanism that reliably detects the final end of a board and ensures that the board is loaded at a storage position.

D. Means for Solving the Problems In order to achieve the above object, the present invention provides a detection device for detecting the rear end of the plate material being transported to the plate material accumulation position, with The slider is installed so that it can freely reciprocate in the direction orthogonal to the
A plurality of detectors for detecting the rear end of the plate are arranged at appropriate intervals in the sliding direction of the slider, and a plurality of detectors are provided for constantly reciprocating the slider when conveying the plate. A reciprocating device is provided, and the conveyance of the plate material is stopped when each of the detectors does not detect the plate material again while the timer activated when all of the detectors are turned OFF times up. It is.

E. Embodiments Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

First, the front view and plan view of the conveyance device shown in FIGS. 4 and 5 will be comprehensively explained.
For example, a conveyance device 3 for transporting a plate P processed by a punch press 1 is composed of a plate gripping device 5, a plate end detection device 7, and a loading storage device 9.

The plate gripping device 5 has a gripping part 11 at its tip for gripping one end of the plate P, is movably suspended from a guide rail 13, and is driven by a motor or the like (not shown) via a chain or the like.

The plate end detection device 7 is provided between the punch press 1 and a loading/storage device 9 to be described later, and has a detection mechanism 19 equipped with a detector 17 on a table 15 at right angles to the progress of the plate P.

The loading storage device 9 is composed of a lifter table 21 and the like, and the plate material terminal detection device 7 detects the plate material P.
After detecting the end of the plate material P, the plate material P conveyed by the plate material gripping device 5 is released from its grip and is stacked on a pallet 23 on a lifter table 21 which can be moved up and down by a pantograph mechanism.

Next, the plate end detection device according to the present invention will be described in detail with reference to the front view and plan view shown in FIGS. 1 and 2.

The plate end detection device 7 includes a detection mechanism 19 to which a table 15 and a detector 17 are attached, and a cylinder 2 as a reciprocating device that reciprocates the detector 17 and the like.
It consists of 5.

The table 15 is installed between the exit side of the punch press 1 and the lifter table 21.
Detector 1, which will be described later, is mounted on a guide plate 27 provided on the top surface of 5.
A slit 29 is provided through which the photoelectric waves of No. 7 pass.

In the detection mechanism 19, a plurality of detectors (for example, diffuse reflection photoelectric switches, etc.) 17 are disposed on a slider 31 that is slidably provided at right angles to the conveyance direction of the plate material P. It is slidably provided on a sliding table 33 whose sliding surface is made of Bakelite or the like.

The cylinder 25 is operated by hydraulic pressure or pneumatic pressure, connects the slider 31 to the tip of a rod 35, and reciprocates the slider 31 in a direction perpendicular to the plate material P being conveyed by the expansion and contraction operation of the cylinder 25. .

The operation of the above-described structure will be explained with reference to an explanatory diagram of the operation mode shown in FIG.

When the plate material P, which is carried out by gripping the end of the plate material by the gripping part 11, passes through the slit 29 cut in the guide plate 27 of the table 15, the detector 17 provided at the bottom of the slit 29 is reciprocated by the cylinder 25. Since the plate P is moved, the entire width of the plate P is detected in a snake-like manner as shown by diagonal lines.

At this time, even if the plate P has a hole 37 or a cutout 39 as shown in the figure, only a part of the detector 17 will be turned off when the plate P passes, but in this case, the terminal of the plate P It is not detected as such. A timer (not shown) operates only when all the detectors 17 are turned off. While this timer is in operation, the presence or absence of the plate continues to be detected, but if the plate is not detected even after the time has elapsed, the plate gripping device 5 stops when all of the detectors 17 are turned OFF, and the plate is considered to be the end of the plate. releases the grip on the plate material P and places it on a fixed position on the pallet 23 on the lifter table 21. This makes it possible to align the ends of the stacked plates.

F. Effects of the invention As can be understood from the above description of the embodiments, the present invention provides a detection device for detecting the rear end of the plate material P being transported to the plate material accumulation position. The plate P
A plurality of detectors 17 for detecting the rear end portion are arranged at appropriate intervals in the sliding direction of the slider 31, and a plurality of detectors 17 are provided at appropriate intervals in the sliding direction of the slider 31.
A reciprocating device 25 is provided for constantly reciprocating the plate material P, and when each of the detectors 17 does not detect the plate P again while the timer that is activated when all of the detectors 17 are turned OFF times up. The structure is such that the conveyance of the plate material P is stopped at a certain time.

As is clear from the above configuration, in the present invention, the slider 31, which is reciprocally movable in a direction perpendicular to the conveying direction of the plate material P, has detectors 17 arranged at appropriate intervals.
is provided, and the slider 31 is always reciprocated by the reciprocating device 25 when the plate material P is being conveyed. Therefore, as shown in FIG. 3, the plurality of detectors 17 detect multiple locations on the plate P in a meandering manner, and if a part of the plate P has a large hole or notch, etc. Even if it is,
There is no possibility of misidentification of the rear end of the plate material P.

Furthermore, since the configuration is such that the conveyance of the plate material P is stopped when each of the detectors 17 does not detect the plate material P again while the timer activated when all of the detectors 17 are turned OFF times out, the conveyance of the plate material P is stopped. The plate materials P can be stacked with their rear ends substantially aligned regardless of their length.

[Brief explanation of the drawing]

Fig. 1 and Fig. 2 show an embodiment of the plate end detection device according to the present invention, Fig. 1 is an enlarged side view of the main part, Fig. 2 is an enlarged plan view of the main part, and Fig. 3 is an explanation of the operation mode. 4 and 5 show a conveyance device embodying the present invention, FIG. 4 is a front view, FIG. 5 is a plan view, and FIG. 6 is a front view showing a conventional example. Explanation of the symbols representing the main parts of the drawing, 3...
Conveyance device, 7... Board end detection device, 19... Detection mechanism.

Claims (1)

[Scope of utility model registration request] The slider 31 is a detection device for detecting the rear end of the plate material P being conveyed to the plate material accumulation position, and is provided so as to be able to reciprocate in a direction perpendicular to the conveyance direction of the plate material P. A plurality of detectors 17 for detecting the rear end of the plate material P are arranged at appropriate intervals in the sliding direction of the slider 31, and the slider 31 is always reciprocated when the plate material P is conveyed. A reciprocating device 25 is provided for each detector 17.
Board material end detection is characterized in that the conveyance of the board material P is stopped when each of the detectors 17 does not detect the board material P again while a timer that is activated when all of the detectors 17 is turned OFF times up. Device.