JPH0731858Y2 - Press material supply equipment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention uses the stacking material in the stacker position from the bottom to
The present invention relates to a material supply device that protrudes one by one and supplies it to a press.

[Prior Art] FIG. 7 shows a conventional pusher type material supply device.

In the figure, reference numeral 2 is a pallet for stacking and holding a plurality of materials 1 and is arranged at a stacker position B. Reference numeral 10 is a pusher bar that reciprocates in the left-right direction by using the movement of the drive unit of the transfer unit. In the state shown by the solid line, the receiving surface 10A can hold one lower material 1 and is shown by the two-dot chain line. In this state, the holding surface 10B can close the lower opening 2A of the pallet 2.

Therefore, if the pusher bar 10 is reciprocated in the left-right direction in FIG. 7, the lowermost material 1 among the materials stacked in the pallet 2 can be supplied from the stacker position B to the delivery position A to the press. . The material 1 moved to the delivery position A is drawn into the press by a feed bar or the like that constitutes the transfer mechanism.

[Problems to be Solved by the Invention] By the way, in the case of the above-described conventional structure, the replenishment of the new material 1 at the stacker position B may be performed by a method in which the operator inserts the material 1 into the pallet 2 from above or by a different method prepared beforehand The pallet 2 is replaced by any of the above methods.

In the former charging method, the operator has to frequently monitor the degree of reduction of the material 1 in the pallet 2, which is troublesome. On the other hand, in the latter exchange method, since the material supply to the press is interrupted when the pallet is exchanged, the productivity is poor.

Moreover, when both methods are adopted in a high-speed press, there is a problem that the material supply rate cannot keep up.

An object of the present invention is to provide a material supply device for a press that can automatically supply new material to a stacker position at a proper time.

[Means for Solving the Problems] The present invention is directed to a material supply position of a press, in which a plurality of materials stacked at a stacker position are forwardly and backwardly projected one by one by a pusher bar that reciprocates, and is supplied to a press. , A conveying system path provided between the stacker position and a separate position apart from the stacker position, and that the uppermost material of the materials stacked at the stacker position is lower than the height of the conveying system path. Weight loss detecting means for detecting,
Material moving means that slides a plurality of materials stacked at separate positions to the stacker position by sliding them on the conveying system path in the stacked state, and separate material moving means based on the detection signal of the weight loss detecting means. A control means for automatically replenishing a plurality of sheets of material stacked at the position onto the uppermost material at the stacker position.

[Operation] In the present invention, when the weight loss detecting means detects that the material at the stacker position has decreased and the uppermost material has become lower than the height of the conveying system path, the control means drives the material moving means based on the detection signal. Then, the material moving means slides the materials at the separate positions in the stacked state on the conveying system path to supply the materials to the stacker position.

Therefore, if a new material is piled up and filled in the separate position every considerable time, the new material can be automatically replenished whenever the amount of the material in the stacker position decreases.

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

As shown in FIG. 1 and FIG. 2, the present material supply device includes a pusher bar 10, a transfer system passage 20, a weight loss detecting means 30, a material moving means 4
0, and when the material 1 at the stacker position B is reduced (lowered) to a certain height, the stacker position B can be automatically replenished from the separate position C in a state where many materials are stacked. ing. Also, in this example,
In order to enable automatic replenishment for a much longer time, the third
As shown in FIGS. 5 to 5, a second conveying system path 50, a material drawing-in means 60 and a stocking means 70 are provided so that the next material can be sequentially replenished to the separate position C.

In FIGS. 1 and 2, a large number of materials 1 stacked at the stacker position B are projected one by one from the lower side by the pusher bar 10 and supplied to the delivery position A. The material 1 in the delivery position A is supplied to the right press by the feed bars 2 and 2 (clamp jaws 3 and 3) forming a part of the transfer mechanism as shown in FIG.

Pusher bar slidingly guided by the guide 12 shown in FIG.
10 is reciprocally moved by a drive unit 11 that reciprocates in a fixed relationship with the feed bars 2, 2.

Therefore, in the state where the pusher bar 10 is shown by the solid line in FIG. 2, it is understood that one sheet of material is supplied to the delivery position A while being stably held on the receiving surface 10A by the pressing roller 15. At this time, the material 1 in the stacker position B is
10B prevents falling down.

The pressing roller 15 is rotatably supported by the pin 16 and is a spring.
It is attached to a lever 18 which is biased at 17.

The material 1 in the stacker position B is detachably attached to the main body 5 shown in FIG. 1 and is fixed to the pusher bar 10 by a fixed guide 25 having a guide surface 25A corresponding to the shape of the material 1.
Is regulated by the positioning pieces 23, 24 which are spring-biased so as to project from the both side guides 27, 28 fixed to the main body 5.

Therefore, the materials 1 stacked at the stacker position B can be accurately placed on the receiving surface 10A of the pusher bar 10. Thus, the material 1 is reduced by the press working, and when the uppermost material 1U becomes lower than the surface of the transport system path 20 described later in detail as shown in FIG. 2, the weight loss detection means 30 outputs the detection signal S. .

The transport path 20 is provided between the stacker position B and the separate position C separated from the stacker position B, and moves a large number of the materials 1 to be replenished placed in the separate position C to the stacker position B. In this embodiment, it is formed by the upper surface (20) of the horizontal member 20A (FIG. 2) which constitutes a part of the main body 5. A large number of materials 1 stacked at this separate position C
The posture is corrected by the movable guide 26. In addition, the guide surface of the movable guide 26 while sliding on the transport path 20
The posture is kept constant by 26A and the upright guides 21 and 22 which are arranged opposite to each other on both sides of the main body 5.

Here, the material moving means 40 is means for moving a large number of materials 1 placed at the separate placement position C to the stacker position B through the transport system path 20 in a stacked state, and is a cylinder fixed to the main body 5. The device 41 and the movable guide 26 detachably attached to the tip of the piston rod 42 are fixed to the bush 44 of the main body 5 by a slidable guide rod 45.

The knob 46 attached to the rear end of the guide rod 45 cooperates with the limit switch 47 to detect the forward limit of the cylinder device 41, that is, the movable guide 26.

The detection switch 7 shown in FIG. 2 detects that the cover 6 of the main body 5 is closed.

The control means 80 shown in FIG. 6 provided for automatically operating the material moving means 40 in this manner to automatically supply the material 1 to the stacker position B has the following functions.

First, as shown in FIG. 2, the weight loss detecting means 30 determines that the height of the uppermost material 1U of the material 1 at the stacker position B is the conveyance system path.
When it is detected that the pressure is lower than the surface 20, the control means 80 receives the detection signal S and the cover closing signal r to drive the cylinder device 41 forward, and the materials 1 in the separate position C are stacked. The stacker is moved to the stacker position B in the state. If the signal r from the detection switch 7 is not input, the cylinder device 41 is not driven forward. This is for worker protection.

When the forward limit detection signal t is input from the limit switch 47, this time the cylinder device 41 is driven backward and the movable guide 26 is returned to the original position.

At the stage where the movable guide 26 reaches the forward limit, the moved material 1 is sandwiched between the fixed guide 25 and the movable guide 26, and the posture of each material 1 is corrected by the positioning pieces 23 and 24. It As a result, the newly supplied material 1 naturally falls and is stacked on the uppermost material 1U shown in FIG.

Next, as shown in FIG. 3, the second conveying system path 50 slides and guides the material 1 on the rotary table 71 (stock position D) of the stock means 70 to the separate placement position C. Is integrally formed on the same surface as the transport path 20. Further, the drawing from the stock position D to the separate position C is performed by the material drawing means 60 shown in FIG. 5, which is composed of a cylinder device 61 and a drawing piece 63 attached to the tip of the piston rod 62.

As shown in FIGS. 3 and 4, the stocking means 70 comprises a rotary table 71, a cylinder device 75 for rotating the rotary table 71, etc., and automatically stacks the stack material 1 on the rotary table 71 to the stock position D sequentially. It is formed to be positioned.

Specifically, a driven body 72 made of a Geneva gear is attached to the rotary table 71, and is driven to rotate by a drive body 73 having pins 73A and 73A.

The driving body 73 is rotated by a variable speed cylinder device 75 shown in FIG. 4 via a rack 76 and a pinion 77 with a one-way clutch. Further, when the material 1 is stacked and placed on the rotary table 71 at intervals of 90 degrees and a certain material 1 is positioned at the stock position D, the driving body 73 is locked by the positioning pin 74. .

These means 60 and 70 are also controlled by the control means 80.

That is, as shown in FIG. 6, the no-material detector 29 (FIGS. 1 and 2) for detecting the loss of the material 1 at the separate placement position C.
When the empty signal e is input from the drawing (not shown in the figure), the control means 80 drives the material drawing means 60 (cylinder device 61) to move to the separate position C while the materials 1 at the stock position D are stacked. After the retraction, the cylinder device 61 is reversely operated to return the retraction piece 63 to the position shown in FIG. Subsequently, the control means 80 drives the cylinder device 75 to rotate the rotary table 71 by 90 degrees and positions the next material 1 at the stock position D.

Therefore, when the separate position C becomes empty, the next material 1 is replenished from the stock position D.

Therefore, according to this embodiment, the transport system path 20, the weight loss detecting means 30, the material moving means 40 and the control means 80 are provided, and when the material 1 at the stacker position B is reduced, it is placed at the separate position C. Since the material 1 is stacked, the control means 80 and the material moving means 40 cooperate with each other so that the material 1 can be automatically replenished by sliding on the conveying system path 20, so that the material 1 can be continuously supplied to the press by the pusher bar 10. Can be supplied. Therefore, the press work is not interrupted, and the productivity can be further improved, and the monitoring work at the stacker position B by the worker can be eliminated.

Further, since the transport system path 20 is horizontal and the standing guides 21 and 22 are provided on both sides of the main body 5, the postures of the many materials 1 stacked from the separate position C to the stacker position B can be changed. You can slide it while keeping it.

Further, the movable guide 26 and the fixed guide 25 can be replaced with those corresponding to the shape of the material 1, and since the spring biased positioning pieces 23 and 24 are provided, the stacker position B
It is possible to accurately supply the material by natural fall in.

Further, since the transport system path 20 is horizontal and the material moving means 40 is driven when the material at the stacker position B becomes lower than the height of the transport system path 20, the material is moved to the stacker position B in the initial state. The material 1 for two times can be set, and the material 1 for one time can be set at the separate position C, so that a large amount of material 1 can be achieved while achieving downsizing of the equipment.
Can be set.

Further, since the control means 80 is designed to drive the material moving means 40 after confirming that the cover 6 has been closed, the safety of the operator during the work of setting one material to the separate position C or the like is ensured. Can be guaranteed.

Further, since the second conveying system path 50, the material drawing-in means 60, and the stocking means 70 are provided and the material 1 is sequentially replenished at the separate position C, the press working can be continuously performed without interruption and new. Since the material 1 only needs to be set on the rotary table 71, the setting work can be performed in a short time and it is safe.

[Advantage of Device] As described above, according to the present invention, when the amount of the material at the stacker position is reduced, a large number of stacked materials set at separate positions are maintained in the same posture by the cooperation of the material moving means and the control means. Meanwhile, since the stocker position is automatically replenished through the transport system path, it is possible to continuously supply the material to the press using the pusher bar without the need for the conventional material reduction monitoring and pallet replacement work.

[Brief description of drawings]

1 to 6 are views showing an embodiment of the present invention. FIG. 1 is a plan view, FIG. 2 is a side view, and FIG. 3 is a plan view with stock means provided, and FIG. Is a side view of the stocking means, FIG. 5 is a block diagram of the material drawing means, FIG. 6 is a drawing for explaining the control means, and FIG. 7 is a drawing for explaining a conventional pusher type material feeding device. is there. 1 ... Material, 1U ... Top material, 2 ... Feed bar, 5 ... Main body, 6 ... Cover, 10 ... Pusher bar, 11 ... Driving section, 20 ... Conveyance system path, 21, 22 …… Standing guide, 23, 24 …… Positioning piece, 25 …… Fixed guide, 26…
… Movable guide, 30 …… Weight loss detecting means, 40 …… Material moving means, 41 …… Cylinder device, 45 …… Guide rod, 50 ……
Second conveying system path, 60 ... Material drawing means, 61 ... Cylinder device, 63 ... Pulling piece, 70 ... Stock means, 71 ... Rotary table, 75 ... Cylinder device, 80 ... Control means, A ...
… Handover position, B …… Stacker position, C …… Separate position,
D: Stock position.

Claims (1)

[Scope of utility model registration request] 1. A stacker position and a stacker position of the press, in which a plurality of materials stacked at the stacker position are reciprocally moved forward and backward by a pusher bar so as to project forward one by one, to the press. And a conveyance system path provided between the separated position and a separate position, and a weight loss detecting means for detecting that the uppermost material stacked at the stacker position is lower than the height of the conveyance system path, Material moving means that slides a plurality of materials stacked at the placement position in the stacked state on the transport system path to move to the stacker position, and separate material movement means by moving the material movement means based on the detection signal of the weight loss detection means. And a control means for automatically replenishing a plurality of materials stacked on top of each other onto the uppermost material at the stacker position.