JPS6010762Y2 - Thin plate material supply device - Google Patents

Description

[Detailed explanation of the idea] Industrial applications This invention relates to an apparatus for feeding a thin sheet material to a press.

Conventional technology and its problems As a conventional device of this type, for example, Japanese Patent Application Laid-Open No. 47-17
As disclosed in the 0'M publication, it is equipped with a distack device having a stack lift table and a crane saver having a pair of conveyor belts provided in parallel to each other so that the stacks can be placed astride. It is known that the crane saver is arranged so that the front part of the conveyor belt is positioned on both sides of the stack lift table, sandwiching it from the left and right sides.
This has the following problems.

If the loading of the stack onto the crane saver is delayed due to worker's circumstances, the stack supply operation by the distack device is interrupted.

The object of this invention is to provide a thin plate material supplying device that solves the above-mentioned problems.

Means for Solving the Problems This invention includes a distack device having a stack lift table and a crane saver having a pair of conveyor belts disposed parallel to each other so that the stacks can be placed astride each other. The crane saver is
In the sheet material supply device, where the front part of the conveyor belt is located on both sides of the stack lift table, an intermittent drive stack conveyor is arranged from the rear of the crane saver to the rear of the crane saver. The front part of the stack transport conveyor, including the final stack stop position, is inserted between the rear parts of both conveyor belts, and the first stack detector is located at the final stack stop position, one pitch before the stack stop position in the stack transport direction. A second stack detector is arranged at each of the stack stop positions, and the stack conveyor is further set at an upper limit position where at least the front part of the entire stack is higher than the rear part of both conveyor belts, and a lower limit position where the stack transport conveyor is lower than the rear part of the conveyor belt. When a second stack detector detects the absence of a stack, the stack conveyor is driven by one pitch based on the detection signal. When the first stack detector detects that there is no stack and the second stack detector detects that there is a stack, the conveyor lifting device is operated based on the detection signal, and the stack conveyor is moved to the lower limit position. As well as moving up and down between the upper limit positions,
This device is characterized in that the stack conveyor is driven by one pitch at the upper limit position of the vertical movement.

The stack fed to the rear of the working stack conveyor is
Until the second stack detector detects a stack, the conveyor is driven one pitch at a time, and the stacks are sequentially sent forward. The stack is always kept on standby at the position where the stack is placed, that is, at the stack stop position one pitch before the final stack stop position in the stack transport direction.

Then, when all the stacks on the stack/lift table are destacked at the front of the crane saver, when the crane saver is driven and the stack at the rear is sent forward, the first stack detector is activated. Since the second stack detector detects that there is no stack, and the second stack detector detects that there is a stack, the conveyor lifting device operates based on the detection signal, and the stack conveyor rises from the lower limit position to the upper limit position. According to
At least the front part of the stack transport conveyor is higher than the rear part of both conveyor belts of the crane saver, and in this state, the stack transport conveyor is driven by one pitch, so that the stack that was one pitch before the final stop position is moved. is fed to its final stop position and the stack conveyor is then lowered from the upper limit position to the lower limit position such that at least the front part of the stack conveyor is lower than the rear part of the same conveyor belt.

As a result, the stacks that have been waiting on the stack conveyor are transferred to the crane saver.

The thin plate material supplying device according to the embodiment includes a destacking device 1 having a stack/lift table 2, and a pair of conveyor belts provided in parallel to each other so that a stack (Sn; n is a positive integer) is placed across the stack. It is equipped with a crane saver 3 having 3A.

The crane saver 3 is arranged so that the front part of the conveyor belt 3A is located on both sides of the stack lift table 2 from the left and right, and the drive motor 6 drives the drive sprocket 11, the driven sprocket 13, and both sprockets 11. Chain 1 wrapped around .13
2 is intermittently driven.

There are one stack stop position at each of the front and rear sides of the crane saver 3 at intervals equal to the drive pitch P□.

Among the same stop positions, the front stop position is located within the device frame IA, and the rear stop position is outside thereof.

Further, a stopper 8 is provided above the front end of the crane saver 3.

Furthermore, the thin plate material supply device includes a stack conveyor 4 disposed from the rear of the crane saver 3 to the rear thereof, and a conveyor lifting device 5.

The stack conveyor 4 includes a pair of parallel conveyor belts 4A, a drive shaft 16 around which these belts are wound via a pulley (not shown), and a conveyor frame 15 that supports the drive shaft 16 at the rear end. A drive sprocket 20 is fixed to the output shaft of the drive motor 7, and a driven sprocket 18 is fixed to the drive shaft 16.
and is intermittently driven via a chain 19 wrapped around both sprockets 20.18.

The drive shaft 16 is rotatable relative to the conveyor frame 15 and is also rotatably supported by a stand 17 placed on the floor 33, so that the entire conveyor 4 swings about the drive shaft 16. It is free.

Further, on the rear surface of the stand 17, a push button switch 34 for starting the conveyor and a push button switch 35 for starting automatic operation of the conveyor are provided.

The stack conveyor 4 has a plurality of stack stop positions 27 to 31 from the rear to the front in the stack conveyance direction at intervals equal to the driving pitch P2, and these stop positions 27 to 31 and the crane separator 3, the stack S1 is connected to the front part of the
~S6 are shown respectively.

Among the stack stop positions 27 to 31, the front part of the conveyor 4 including the final stack stop position 27 is located at the crane saver 3.
It is inserted between the rear parts of both conveyor belts 3A.

The first stack detector 2 is located at the stack final stop position 27.
A second stack detector 26 is disposed at a stack stop position one pitch before the stop position 27 in the stack transport direction.

Furthermore, a side stopper 9 is arranged at the stack supply position 31, which is the first stack stop position.

The conveyor lifting device 5 is a fluid pressure cylinder provided vertically upward below the front end of the conveyor 4 .

The rod 22 is connected to the connecting plate 21 of the conveyor frame 15.
It is connected to a bracket 24 on the lower surface via a horizontal pin 23.

By this lifting device 5, the front part of the conveyor 4 is raised and lowered between an upper limit position where it is higher than the rear parts of both conveyor belts 3A of the crane saver 3 and a lower limit position where it is lower than the rear parts.

When the second stack detector 26 detects the absence of a stack, the stack conveyor 4 is driven by one pitch based on the detection signal.

Further, when the first stack detector 25 detects that there is no stack and the second stack detector 26 detects that there is a stack, the conveyor lifting device 5 is activated based on the detection signal to move the stack conveyor. 4 moves up and down between the lower limit position and the upper limit position, and the stack conveyor 4 is driven by one pitch at the upper limit position of the up and down movement.

All of these controls are performed automatically, but
The control is remotely performed, for example, by attaching a pulse generator to the drive motor 7 of the stack conveyor 4 and counting the pulses.

Next, the stack supply operation will be explained with reference to FIG.

The stack supply work is automatically and continuously performed, and the preparatory work steps are shown in FIGS.

First, the stack supply device 31 of the stack conveyor 4
Place the stack S□ on the (Figure 3 A).

When the conveyor start push button switch 34 is pressed, the conveyor 4 is driven by one pitch and the same stack S□ is sent to the second stack stop position 30, so the second stack S2 is placed at the stack supply position 31. (Figure 3 entrance)
.

In this state, when the push button switch 35 for starting conveyor automatic operation is pressed, the above-mentioned automatic control system operates, and the two stacks S1. S2 are both sent forward (to Figure 3).

Then, the second stack detector 26 detects that there is a stack S□, and the first stack detector 25 detects that there is no stack, so the front end of the conveyor 4 rises and the conveyor 4 reaches its upper limit position. is driven by one pitch, the first stack S1 is sent to the final stack stop position 27, and the second stack S2 is sent to the stack stop position 28, which is one pitch before the same stop position ( 3), the first stack S1 is transferred to the crane saver 3 by lowering the front end of the conveyor 4.

(Figure 3 E).

Then, the crane saver 3 is driven to remove the first stack S.
1 to the lift table 2, the first stack detector 25 detects that there is no stack, so the front end of the conveyor 4 moves up and down and the conveyor 4 is driven by one pitch. The second stack S2 is also transferred to the crane saver 3 (see FIG. 3).

Next, as shown in FIG. 3, by operating the pushbutton switch 34 for starting the conveyor again, the stacks S□ to S6 are placed at each stop position 28 to 31 of the conveyor 4 except for the final stack stop position 27. When each is sent in, the preparation work is completed (Fig. 3 C).

When all the first stacks S□ on the lift table 2 are destacked, the crane saver 3 is driven and the second stack S2 at the rear thereof is sent forward, and the first stack S1 is Instead, it is placed on the lift table 2 (third diagram).

Then, the second stack detector 26 again detects the presence of the third stack S3, and the first stack detector 26 detects the presence of the third stack S3.
5 detects that there is no stack, the third stack S3 is transferred from the conveyor 4 to the crane saver 3, and a new seventh stack 7 is placed on the stack supply position 31 (see Figure 3). ).

By repeating the actions shown in the third diagram,
Stacks are fed in succession.

Effects of the invention According to this invention, among the stack stop positions of the stack transport conveyor, the stack is always on standby at the stack stop position at least one pitch before the final stop position, and the stack is always on standby in front of the crane saver. When all the stacks on the stack lift table have been destacked in the stack lift table, the crane saver is driven and the stack at the rear of the crane saver is sent forward, and then it is placed on standby on the stack conveyor. Since the stacks that have been stored are transferred to the crane saver, even if there is a temporary delay in supplying the stacks to the stack conveyor, the stack supply operation by the destacking device can be carried out continuously without interruption.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, and the first figure is a plan view and the second figure is a plan view.
The figure is a front view, and FIG. 3 is an operation explanatory diagram. 1... Distack device, 2... Stack lift table, 3... Crane saver, 3A... Conveyor belt, 4...
Stack conveyor, 5... Conveyor lifting device, 25.26... Stack detector.

Claims (1)

[Scope of utility model registration request] The crane saver 3 includes a distack device 1 having a stack lift table 2, and a crane saver 3 having a pair of conveyor belts 3A provided in parallel to each other so that stacks can be placed across the stack.
In the thin plate material supply device, which is arranged so that the front part of the conveyor belt 3A is located on both sides of the stack lift table 2, an intermittent drive stack transport conveyor extends from the rear part of the crane saver 3 to the rear of the crane saver 3. 4 is arranged, and the front part of the stack conveyor 4 including the final stack stop position is inserted between the rear parts of both conveyor belts 3A, and the first stack detector 25 is located at the final stack stop position, and the first stack detector 25 is located at the final stack stop position. A second stack detector 26 is arranged at each stack stop position one pitch in front of the stack in the stack conveyance direction, and furthermore, the stack conveyor 4 is set at an upper limit where at least the front part of the entire stack is higher than the rear part of both conveyor belts 3A. A conveyor lifting device 5 is provided to raise and lower the conveyor between the lower limit position and the lower limit position lower than the rear part, and when the second stack detector 26 detects that there is no stack, the stack conveyor 4 is moved up and down based on the detection signal. is driven by one pitch, and the first stack detector 25 detects that there is no stack, and the second stack detector 26 detects that there is a stack. Based on the detection signal, The conveyor lifting device 5 operates to move the stack conveyor 4 up and down between the lower limit position and the upper limit position, and
A thin plate material supplying device characterized in that the stack conveyor 4 is driven by one pitch at the upper limit position of this lifting/lowering operation.