JPH0734012Y2 - High-speed tray conveyor article loading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention detects an empty tray on which an article is not placed during high-speed movement of a tray conveyor used as an article sorting conveyor, and sorts the empty tray. This is to selectively feed and supply articles.

2. Description of the Related Art A sorting conveyor is known, in which sorting articles are placed on each tray of a tray conveyor having a large number of trays and are conveyed at high speed, but sorting articles are placed on empty trays on which tray articles are not placed. It is very difficult to load and supply the articles because the conveyor is moving at a high speed, and conventionally, articles are manually supplied to the empty tray which is visually confirmed. The current situation.

Problems to be Solved by the Invention It is difficult to manually load articles as described above at the timing of loading articles, and therefore, many input articles fall outside the tray without being fed onto the empty tray, and However, even if they are thrown into an empty tray, the posture of the articles on the tray is not uniform, and some articles may not be placed on the center of the tray and may stick out from the tray. Etc., the shape of the products collapsed, making sorting difficult. Furthermore, articles with incorrect loading timing were repelled by the high-speed tray conveyor and jumped out, causing the loading operation itself to be dangerous.

Then, this invention aims at solving the said subject.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention electrically detects an empty tray of a tray conveyor which is moving at high speed, and opens the detection signal downward above the tray conveyor. Input into the opening drive means of the input article support damper that opens
The damper is opened by the operation of the damper opening drive means,
The article placed on the damper is dropped into the detection empty tray by free fall.

In a tray conveyor in which sorting articles are respectively placed on a large number of trays and moving at high speed, an empty tray in which articles are not placed on the trays is detected by a photoelectric tube or the like, and the detection signal is a moving speed of the tray conveyor, Since the opening driving means of the input article support damper is operated through the control means of the article input timing timing calculated from the distance between the detection position and the article input position, the article input height, etc., the damper is opened by opening the damper. At the same time as the start of the downward rotation of the damper, the loaded article supported by the device can freely drop and be loaded at the same timing as the detection empty tray passes.

Embodiment FIG. 1 shows a tray conveyor 1 having a large number of trays T, T ...
FIG. 2 is a schematic plan view of moving in the direction of arrow a, and FIG. 2 is a schematic front view of the double-sided double-door type damper 2 (above) for supporting the input article A above the tray conveyor 1 and rotating downward. An input article support damper 2) is provided at a fixed position.

A plurality of reflection tapes F are attached to the article mounting surface of each of the trays T, T ... In the tray moving direction, and the tray T by a photoelectric tube means or the like is provided on the upstream side of the installation position of the input article supporting damper 2. The entrance detector S ₁ of the tray T and the passage detector S _{2 of} the tray T are installed at an interval of the length of one tray, and the empty tray detector S ₃ for detecting the presence or absence of the article on the tray T is the detector. S ₁ and
Installed above between S _2, on the basis of the set value of the input timing distances turned article supporting damper opening timing signal generator S ₄ is calculated from the input level of the travel speed and turned articles A tray conveyor 1 and the like Are placed, and also
The presence / absence detector S ₅ of the input article A is placed on the input article support damper 2.
Is provided.

FIG. 3 is an enlarged front view showing an example of the thrown article support damper 2, wherein the thrown article support damper 2 is supported by bearings at both lower ends of the article dropping guide frame G mounted on the frame B, respectively. The outer ends are fixed to the moving shafts 3, 3 and the inner ends are bottom-opening dampers having horizontal free ends in contact with each other.

Further, on the outer frame of the guide frame G, the rotary bearings 3, 3 are provided.
Chain suspended on sprockets 4 and 4 fixed to the shaft end of
The other ends of the coil springs 6,6, which are connected to one ends of 5,5,
The other end of the chain is connected to an opening / closing operation cylinder device 8 of a damper through idlers 7, and a solenoid valve 9 for controlling the operation of the cylinder device 8 is attached.

The coil springs 6 and 6 have an urging force for opening and rotating the damper 2, and the cylinder device 8 has a resisting force for holding the damper 2 in the closed position against the urging force of the coil spring when the piston rod is contracted. is doing.

Next, the article loading operation will be described step by step with reference to FIG. 4. The empty tray detector S ₃ is not always transmitting,
Since the tray entry detector S ₁ is turned on and then the tray entry detector S ₂ is turned on, the transmission operation is performed. Therefore, if there is an article A on the tray, the empty tray detector S ₃ does not receive the reflected light, If there is no article A, the reflected light is received and the empty tray detector S ₃ confirms that it is an empty tray. If it is an empty tray, an empty tray detection signal is transmitted from the empty tray detection circuit, and this signal is introduced into the shift register of the controller shown in FIG.

On the other hand, if the article is on the damper controller, introduces turned article presence detection signal on the damper from an article existence detector S _5, in accordance with the progress of the tray by said presence detection signal and the shift register in the shift When the empty tray signals that have been received are complete, the damper release preparation is completed.

In this state, when a damper opening timing signal is introduced from the damper opening timing signal transmitter S ₄ to the controller, a damper opening command signal is transmitted from the controller and the signal operates the solenoid valve 9 shown in FIG. By releasing the reaction force against the opening rotation urging force of the coil spring of the cylinder device 8, the piston rod of the cylinder device 8 is extended to the chain line position.

Therefore, the chains 5, 5 rotate the sprocket 4, 4 so that the dampers 2, 2 open downward due to the contracting and urging force of the coil springs 6, 6 in the expanded state, so that the article A on the damper 2 is rotated.
At the same time as the damper starts to rotate downward, the damper falls freely and is loaded onto the empty tray in time with the detected traveling position of the empty tray.

After a certain period of time has passed, the damper 2 after dropping the articles switches the solenoid valve to reduce the piston of the cylinder device 8 to the original position, and the coil spring is forcibly extended against the biasing force of the coil springs 6, 6 to cause the chain 5 to move. , 5 are reversed to close the input article support dampers 2, 2 in the horizontal position.

Advantageous Effects of Invention The present invention provides an input article support damper above the tray conveyor, provides empty tray detection means upstream of the arrangement position of the damper, and outputs the detection signal to the traveling speed of the tray conveyor. Since a damper opening command transmitter that controls the dumping timing by controlling the article dropping timing calculated from the article loading height etc. is provided, when an empty tray is detected on the tray conveyor during high speed traveling, the detection signal Since the input article support damper supporting the article can be opened to drop the article on the empty tray at a good timing, the empty tray during high-speed traveling can be visually confirmed, and the article on the empty tray can be checked. Compared to the conventional technology that relies on manual work based on the timing of dropping, articles are loaded into an empty tray more reliably, and the loading time is also automatically determined. , The damper closing rotation resisting force of the cylinder device against the damper opening rotation biasing force of the coil spring is released, and at the same time, the damper opening rotation biasing force by the coil spring instantly operates to rapidly open and rotate the damper. The failure and danger of the loading work of the above is eliminated, and the article supported on the damper is directly below the supported position without changing the supported position by the downward pivotal opening of the damper, and of the damper. Since it falls freely as soon as it starts rotating downwards, the articles dropped on the empty tray can be placed on the tray in a regular posture without irregular alignment, and the sorting operation of the sorted articles can be surely performed. Can be efficiently performed, and its practical effect is great.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a plan view of a main portion, FIG. 2 is a schematic front view of FIG. 1, FIG. 3 is an enlarged front view of a dumper supporting damper, and FIG. It is a control block explanatory view. 1 ... Tray conveyor 2 ... Input article support damper S ₁ , S ₂ , S ₃ ...... Empty tray detector S ₄ ...... Damper opening timing signal transmitter

Continuation of the front page (56) Reference JP-A-60-218215 (JP, A) JP-A-49-50672 (JP, A) JP-A-57-137213 (JP, A) Actual development 62-200633 (JP , U) Actual opening 61-176120 (JP, U) Actual opening 62-92222 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A detection means for detecting an empty tray of a tray conveyor which is moving at high speed, and a double-door insertion article support damper which is located above the tray conveyor downstream of the position of the detection means and pivots downward to open. A coil spring for biasing the damper to open and a force for holding the damper at an article support closed position against the biasing force of the coil spring for opening and turning, and the drag force detected by the detection means. And a damper opening / closing actuating cylinder device whose operation is controlled to release the item, and an article loading device for a high-speed tray conveyor that loads a bearing article on the damper onto the detection empty tray by free fall.