JPH01226635A - Board feeder - Google Patents

Abstract

PURPOSE:To accurately separate and transfer boards, free from the influence of the rigidity or thickness of the board, by a method wherein adsorbing means which move successively upward in a certain direction are arranged on a vertically movable base and the absorbing means lift up the boards in a manner comparable to turning up their ends one by one. CONSTITUTION:A base 3 is lowered, and at the time when each adsorbing cup 45, 55, 67 and 75 adsorbs a board S1 without fail, a first timer outputs a time-up signal so that only sub-driving means 41 of a first group in the neightourhood of ends retracts to lift the end of the board S1 towards the middle of the board S1 in a manner comparable to turning S1 up thereby separating it from a board S2 which is a second layer. At the time when the retraction of the first group is over, a second timer outputs signal so that a sub- driving means 51 of a second group retracts to lift the board S1 toward left also in a manner comparable to turning the board S1 up. At the time when the retraction of all the sub-driving means is over, a main driving means 2 is actuated to lift the base 3 thereby lifting the board S1. By the above mechanism, the boards can be transferred accurately one by one.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a plate supply device that conveys laminated plates one by one to a processing machine.

(Prior art) Board materials to be subjected to press working, etc. are usually coated with rust preventive oil and stacked in a stacking area, where they are taken out one by one and supplied to a press machine. Therefore, there is a problem in that the plates are in close contact with each other and a plurality of plates are transported in a stacked state.

In order to solve this problem, a magnetic floater is installed in the laminated part to lift the edge of the plate using electromagnetic force, and as shown in Japanese Utility Model Application Publication No. 61-12544, a suction means is used to raise the edge of the plate to a certain height. A method has also been proposed in which the suction means is moved in the horizontal direction while the second and subsequent materials are held down horizontally by a pusher, but in the former method, only the material is removed. Moreover, the examiner's method has the problem that it cannot be applied to opening stops that require a thickness that is comparable to that of a plate, such as a thin plate with a through hole.

(Objective) The present invention has been made in view of the above-mentioned problems, and its object is to provide a plate material supplying device at which can reliably separate and convey materials regardless of their rigidity or thickness. It is in.

(Summary of the Invention) In other words, the present invention is characterized in that a suction means that moves upward in order in at least one direction is provided on a vertically movable base, and The reason is that it can be lifted up as if turning it over.

(Example) The details of the present invention will be described below based on illustrated examples.

FIG. 1 shows an embodiment of the present invention, in which reference numeral 1 is a transfer device, and a second As shown in the figure, a plurality of sub-drive mechanisms 41 such as cylinders are arranged in a grid pattern.
44.51 to 54.61 to 64.71 to 74 are arranged in first to fourth groups, and suction cups 45 to 48.55 to 58.65 to 6 are arranged at the tip of each sub-drive mechanism.
8.75 to 78 are installed. This transfer device] includes an upper limit detection relay 5 that outputs a signal when the base 3 rises until the distance from the main drive mechanism 2 reaches a certain value or less;
Sub-driving means 41-44.51-54.61-64.71
~When extended to 74, suction cup 45~48.55~
58.65 to 68.75 to 78 are configured to output a signal to a control circuit described later by installing a plate detection relay 6 that outputs a signal when the base 3 has descended to a distance where it can press against the plate. .

Incidentally, the reference numeral 7 in the figure indicates a magnet 20-k disposed in the plate material accumulation section 8.

Figure 3 shows a control device that controls the operation of the above device, forming a main circuit in which an upper limit detection relay 5 and a plate detection relay 6 are connected in series. Interval T□, T2, King 7, T
4, and timers 11 to 15, each of which sets the point of degeneration of the main drive mechanism 2, are connected, and the timers 11 to 15 are connected to each other.
14 and the first to fourth group auxiliary drive mechanism operating circuits 16 to 19, which are operated by signals from the main circuit, are connected. The sub drive mechanism operating circuits 16 to 19 include sub drive mechanisms 41 to 44.51 to 54.61 to 64.71 for each group.
74 are connected to the main drive mechanism operating circuit 20 which also operates the main drive mechanism 2. The main circuit, the upper limit detection relay 5
, and signals from the fifth timer 15 are input.

Next, the operation of the apparatus configured as described above will be explained based on the flowchart shown in FIG.

First, when targeting a plate material with a through hole H,
The sub-drive mechanisms, for example sub-drive mechanisms 56 and 66, which are opposed to the shape of the hole are retracted and inoperative.

When the device is operated after completing such preparations, the main drive mechanism 2 is operated and the base 3 is lowered. In the process of this descent, the plate material detection relay 6 provided at the tip of the base 3 reaches a certain height, that is, the sub-drive mechanisms 41 to 44.
~54.61~64.71~74 when extended, suction cup 45~48.55~58.65~68.75~
It detects that 78 has descended to the position where it sticks to the plate and outputs a signal. As a result, the main drive mechanism operation circuit 20 stops the extension operation of the main drive mechanism 2 and stops the base 3, and the first to fourth group sub-auxiliary drive mechanism operation circuits 15
18 are all sub-drives except those whose extension operation has been stopped.The suction cups 45 to 78 are extended by extending the mechanisms.
is pressed against the plate material S1 (see Figure 5), and the first to fifth timers 11 to 15 begin their timing operations.

After a certain period of time, that is, when each suction cup reliably suctions the plate material S1, a time-up signal is output from the first timer 11, and the sub-drive mechanisms 41 to 4 of the first group near the end are outputted.
Only 4 degenerates. As a result, the plate material S1 is pulled up from the end toward the center, and is pulled up from the second layer of the plate material S2 M'2! (11) When the sub-drive mechanisms 41 to 44 of the first group have finished retracting, a time-up signal is output from the second timer 12, and the sub-drive mechanisms 51, 53, and 54 of the second group are retracted and the plate material is Pull S1 up to the left in the figure (■).

Thereafter, the third timer 13 and the fourth climber 14 sequentially time up and pull up one plate on the surface toward the other end (■, ■).

When all the sub-drive mechanisms have finished degenerating, the fifth timer 2
A time-up signal is output from 0, the main drive mechanism 2 operates again, and the base 31F! : Pull up to raise the plate material S1.

By the way, even if the plates are pulled up sequentially from the ends as described above, the second layer plate material S2 may be lifted up in a state in which it is in close contact with rust preventive oil, Paris, etc. (V').

Therefore, when the base 3 is pulled up to the upper limit and a signal is output from the upper limit detection relay 5, the main drive mechanism operating circuit 2o extends and extends the main drive mechanism 2 at the upper limit to lower the base 3 (■). As a result, the second plate material S2, which was attached to the surface plate material S1, falls into the stacking section 8 due to the reaction.

In this embodiment, the pulling is performed in order from one end to the other, but as shown in FIG. It is clear that the same effect can be obtained even if the sub-drive mechanisms 51 to 54 and 61 to 64 on the side are sequentially retracted.

Further, in this embodiment, a self-negative pressure type suction cup is used, but it is clear that the same effect can be achieved even if a vacuum cup operated by negative pressure from a vacuum source is used.

In addition, in this embodiment, the base is lowered to a predetermined position by the main drive mechanism, and then the sub-drive mechanism is tested to press the suction cup against the plate material, but the necessary sub-drive mechanism is extended in advance. If the main drive mechanism is extended while the main drive mechanism is being extended, the sub-drive mechanism may be extended in the process of extending the main drive mechanism, and not only will the same effect be achieved, but the time required to extend the sub-drive mechanism can be saved. .

Generally speaking, in the above-described embodiment, the vertical movement is performed by a cylinder, but it is clear that the same effect can be achieved even if a driving means such as a morph is used.

Generally speaking, the movement of the base to the plate is controlled by the plate detection relay, but the same effect can be obtained by setting the opening of the main drive mechanism when it is moved by a timer.

(Effects) As described above, according to the present invention, a plurality of auxiliary drive means each having a plate suction means at the tip are arranged on the lower surface of the base that moves vertically by the drive means in at least one direction of the plate surface. and a control means for sequentially operating the sub-drive means from one end of the plate material,
The surface layer plates can be pulled up by turning them over in order from the end, and even thin and weak plates can be reliably transferred one by one.

In addition, in the present invention, the driving means is configured to lower the plate material rapidly after it has been pulled up, so even if there is another plate material in close contact with the back side, it can be loosened and transferred one by one without fail. be able to.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the device according to an embodiment of the present invention, Fig. M2 is a front view showing the back side of the base, and Fig. 3 is an implementation of a control circuit that controls the operation of the same device. A block diagram showing an example, FIG. 4.5 is a flowchart and explanatory diagram showing the operation of the same device, and FIG. 6 is an explanatory diagram showing another embodiment of the present invention. 1... Transfer equipment W 2... Main drive mechanism 3.
...Base 41-44.51-54.61-64.71-74...
・・Subdrive mechanism 45~48.55~58.65~68.74~78...
・・Suction cup

Claims (3)

[Claims] (1) A plurality of sub-driving means each having a plate suction means at the tip thereof are provided on the lower surface of the base which is moved in the vertical direction by the main drive means so as to correspond to at least one direction of the plate surface, and the plate suction means A plate material supply device comprising a control means for sequentially retracting the sub-driving means from one end of the plate material when the plate material is attracted to the plate material. (2) The plate material supply device according to claim 1, wherein the sub-driving means are arranged in a grid pattern on a base. (3) The plate material feeding device according to claim 1 or 2, wherein the control means includes a step of rapidly lowering the auxiliary drive means when the plate material is pulled up.