JPH05318001A - Intermediate transporting device - Google Patents

Abstract

PURPOSE:To easily execute lubrication of a blank from the upper part of the blank before press working and also to shorten working time for separating the blank from a moving means with which the blank is transported. CONSTITUTION:In an intermediate transporting device 30, the blank 11 is received from the vacuum cup 24 of a destacking device 20, this blank 11 is transported with the under surface attracted with a 1st magnetic conveyer 31 and fed to the main body 12 of the press machine by changing it to the surface attracting transportation with a 2nd magnetic conveyer 32 in the stage S4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intermediate transfer device,
It can be used as an intermediate transfer device for intermittently sucking and transferring blanks, which are press working materials, one by one and sending them to the press machine body.

[0002]

BACKGROUND ART Conventionally, a method of utilizing a magnet conveyor has been used as a method of feeding a blank sucked by a suction member of a destack device to a press machine main body (Act No. Sho 60-25316). FIG. 3 shows an intermediate conveyance device 80 which is the conventional example. In the figure, the intermediate transfer device 80 constitutes a part of the material supply device 81 for supplying the blank 91 to the press machine body 95. Material feeder 81
Is composed of a destack device 90 and an intermediate transfer device 80. The blank 91 is pressed into the press machine body as follows.
Supply to 95.

That is, first, the destack stage R1
In the above, the blank 91, which is vertically separated and held by the magnetic separator 92 of the destack device 90, is sucked and raised by the vacuum cup 93 by operating the cylinder device 94,
Then, it is adsorbed to the lower surface of the magnet conveyor 82 of the intermediate transfer device 80, and by this magnet conveyor 82, one feed pitch P is intermittently applied one by one toward the press machine main body 95.
Just send.

Next, in the blank supply idle stage R2, the two-sheet blank detector 83 detects whether or not the two blanks 91 are overlapped, and when the two blanks 91 are overlapped, an excluding means (not shown) is used. Exclude.
Then, the blanks 91 are again fed one by one toward the press machine body 95 by the magnet conveyor 82 by one feed pitch P.

Thereafter, in the press idle stage R3 (the final stage of the intermediate transfer device 80), the knockout device 84 pushes down the blank 91 adsorbed and held on the lower surface of the magnet conveyor 82, and the magnet conveyor 82 is pressed.
Remove the blank 91 from. At this time, the elevation blank pedestal 85 is raised (two-dot chain line in the figure). Then, the blank 91 separated from the magnet conveyor 82 is moved down while being sandwiched by the knockout device 84 and the elevating blank pedestal 85, and placed at a predetermined position on the upper surface of the fixed blank pedestal 86.

Finally, the blank 91 placed at a predetermined position on the upper surface of the fixed blank pedestal 86 is moved by the feed stroke FS by the feed bar 96 of the press machine body 95 and sent to the first processing stage R4 of the press. As described above, the blank 91 is supplied to the press machine body 95.

[0007]

By the way, in press working, when the blank 91 is processed by the die of the press machine main body 95, in order to reduce the friction between the die and the blank 91 and to carry out the press work smoothly. In the press idle stage R3, it is necessary to apply oil to the blank 91.
However, in such a conventional example, since the magnet conveyor 82 is located above the press idle stage R3,
There is a problem that it is difficult to apply oil to the blank 91 from above at the press idle stage R3.

When the blank 91 is moved by the feed bar 96 from the press idle stage R3 to the first processing stage R4, the feed bar 96 moves up and down in addition to the forward / backward movement in the feed direction of the blank 91. , A magnetic conveyor to ensure the movement range of this feed bar 96
Need to set 82 height. Therefore, the vertical distance between the height of the upper surface of the fixed blank pedestal 86 and the height of the feed line of the blank 91 of the magnet conveyor 82 becomes long, and the vertical stroke of the knockout device 84 and the vertical blank pedestal 85 becomes long. There is a problem that the time becomes longer and the stability of the posture of the blank 91 placed on the upper surface of the fixed blank supporter 86 may be impaired.

Further, in the press working, the mold is changed according to the type of the blank 91, but it may be necessary to switch the feed stroke FS of the feed bar 96 on the press side accordingly. Therefore, the position of the press idle stage R3 also has to be switched in correspondence with the switching of the feed stroke FS, but in the conventional example as described above, the one feed pitch P on the side of the material feeding device 81 is unchanged. There is a problem that this request cannot be met.

An object of the present invention is to allow a blank before press working to be easily oiled from above the blank in a press idle stage, and to remove the blank from a moving means such as a magnet conveyor. An object of the present invention is to provide an intermediate transfer device which can be moved in a short time and can secure the stability of the blank posture.

Further, an object of the present invention is to provide an intermediate transfer device capable of easily switching the position of the press idle stage corresponding to the switching of the feed stroke of the feed bar accompanying the replacement of the die of the press machine body. Especially.

[0012]

The intermediate conveying device according to the first invention of the present invention has a first moving means and a second moving means, and the first moving means is a material for press working. Receive a blank from the suction member of the destack device,
The blank is sucked onto the lower surface and conveyed to the main body of the press machine. Then, the blank is transferred from the first moving means to the second moving means in the middle of the intermediate conveying device. The second moving means, which has received the blank from the first moving means, conveys the blank while adsorbing the blank onto the upper surface and sends the blank to the press machine body.

Further, the intermediate conveying device according to the second invention of the present invention is characterized in that, in the first invention, the second moving means moves forward and backward in the blank feeding direction. Further, the intermediate conveying device according to the third aspect of the present invention is characterized in that, in the first aspect, the end of the second moving means extends and contracts in the blank feeding direction.

[0014]

In the first aspect of the present invention as described above, the intermediate transfer device has the first moving means and the second moving means, and the first moving means receives the blank received from the suction member of the destack device. The lower surface is sucked and conveyed to the second moving means, and the second moving means sucks and conveys the blank received from the first moving means on the upper surface and sends it to the press machine body. It becomes possible to secure a sufficient upper space in the final stage). For this reason, it becomes possible to easily apply oil to the blank before press working from above the blank in the press idle stage.

Further, as described above, since the lower surface conveyance by the first moving means is switched to the upper surface conveyance by the second moving means in the middle of the intermediate conveying device, the blank detachment from the second moving means in the press idle stage is performed. As a result, the inconvenience that the vertical stroke of the device for removing the blank must be lengthened in order to secure the vertical movement range of the feed bar as in the conventional example can be solved. Then, if the blank is moved up slightly, the blank can be removed. Therefore, it is possible to shorten the lifting stroke of the device for performing the blank removal, shorten the operating time thereof, and ensure the stability of the blank posture.

Furthermore, in the second and third aspects of the present invention, the second moving means is moved forward and backward in the blank feeding direction, or the end of the second moving means is expanded and contracted in the blank feeding direction. Since the position of the press idle stage can be switched, it becomes possible to cope with the switching of the feed stroke of the feed bar accompanying the replacement of the mold of the press machine body, and these can achieve the above object.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, the intermediate transfer device 30 includes a blank 11
It constitutes a part of the material supply device 10 for supplying the material to the press machine body 12. The material supply device 10 is a destack device 20.
And the intermediate transfer device 30.

The destack device 20 comprises a magnetic separator 21 for separating and holding the blank 11 vertically, a magazine 22 for accommodating the blank 11, and a lift cylinder 23 for lifting the blank 11 from the magazine 22 to the magnetic separator 21. , Magnetic separator
A vacuum cup 24, which is a suction member that suctions and raises the blank 11 that is separated and held by 21, and a vacuum cup.
A pickup cylinder 25 for moving up and down 24 is included.

The intermediate transfer device 30 is a first magnet conveyer 31 which is a first moving means for adsorbing and holding the blank 11 on the lower surface and a second moving means for transferring the blank 11 while adsorbing and holding the blank 11 on the upper surface. Second magnet conveyor
32, a magnet 33A which is an adsorption means for adsorbing the blank 11 on the first magnet conveyor 31, a magnet 33B which is an adsorption means for adsorbing the blank 11 on the second magnet conveyor 32, and a first magnet conveyor
First motor 34 for driving 31 and second magnet conveyor
A second motor 35 that drives 32.

Regarding the front-rear positional relationship between the first magnet conveyor 31 and the second magnet conveyor 32, the first magnet conveyor 31 is arranged on the destack device 20 side and the second magnet conveyor 32 is arranged on the press machine body 12 side. Looking at this in the transport movement order of the blank 11, the blank 11 in the order of the destack device 20, the first magnet conveyor 31, the second magnet conveyor 32, and the press machine body 12.
Are arranged to be transported.

As for the vertical positional relationship between the first magnet conveyor 31 and the second magnet conveyor 32, the first magnet conveyor 31 is arranged above the second magnet conveyor 32 and is formed on the lower surface of the first magnet conveyor 31. The feed line of the blank 11 and the feed line of the blank 11 formed on the upper surface of the second magnet conveyor 32 are arranged so as to be substantially in line.

The end of the first magnet conveyor 31 on the press machine body 12 side and the end of the second magnet conveyor 32 on the destacking device 20 side are arranged in the front-back direction (blank 11) for delivery of the blank 11. Feed direction).

Further, the intermediate transfer device 30 detects the two blanks detector 36 for detecting whether or not the two blanks 11 conveyed by the first magnet conveyor 31 overlap each other and the two blanks 11 overlapped with each other. Two-sheet blank discharging means for discharging
37, a bucket 38 for accommodating the blank 11 discharged by the two-sheet blank discharging means 37, and the blank 11 suction-held on the upper surface of the second magnet conveyor 32 are pushed upward to push the blank 11 from the second magnet conveyor 32. A vertically movable chute 39 that separates the chute 39, a cylinder device 42 that vertically moves the chute 39, and a second magnet conveyor
It has a cylinder device 40 which is a second magnet conveyor position switching means for moving the 32 etc. forward and backward in the blank feeding direction (X direction in the figure), and a slider 41 on which the second magnet conveyor 32 etc. is installed. ing.

The intermediate transfer device 30 has six stages.
It is divided into S1, S2, S3, S4, S5, S6, and each stage S1
Each distance between S6 and S6 is configured to be the same in a normal state (the second magnet conveyor 32 is in a solid line in the figure). The blank 11 is then fed by the first magnet conveyor 31 and the second magnet conveyor 32 to one feed pitch P of each of the six stages S1 to S6.
They are sent intermittently toward the press machine body 12. At this time, in a normal state, the feed rates of the first magnet conveyor 31 and the second magnet conveyor 32 are the same.

Each of the stages S1 to S6 is configured as follows. The stage S1 is a so-called destack stage, in which the intermediate transfer device 30 receives the blank 11 from the destack device 20. At the stage S2, the double-blank detector 36 detects the double-blank state of the blank 11. In the stage S3, the two-layered blank 11 is discharged based on the detection result of the two-layered state of the blanks 11 performed in the stage S2. Then, the discharged blank 11 is stored in the bucket 38.

The stage S4 includes the first magnet conveyor 31.
Is a stage where the blank 11 is transferred between the second magnet conveyor 32 and the second magnet conveyor 32. Here, the conveyance of the blank 11 is switched from the lower surface conveyance by the first magnet conveyor 31 to the upper surface conveyance by the second magnet conveyor 32. In addition, in this stage S4, the gap between the first magnet conveyor 31 and the second magnet conveyor 32 is approximately equivalent to the plate thickness of the blank 11, and the magnet 33A for the first magnet conveyor 31 is The magnetic force is weak, and the magnet 33B for the second magnet conveyor 32 has a strong magnetic force.

The stage S6 is a so-called press idle stage, which is the final stage of the intermediate transfer device 30. At this stage S6, the blank 11 is separated from the second magnet conveyor 32 by the upward movement of the chute 39.

A stage S7, which is a first processing stage, is formed on the first press work stage of the press machine body 12, and the first press is performed here.
And the distance between stages S6 and S7 is
The feed stroke FS 13 intermittently conveys and moves the blank 11 by 13.

The cylinder device 40 is configured to move the slider 41 provided below the second magnet conveyor 32 forward and backward in the feeding direction of the blank 11 (X direction in the drawing). A second magnet conveyor 32 and a magnet 33B for the second magnet conveyor 32 are arranged on the slider 41, and a second motor 35, a chute 39, and a cylinder device 42 are provided on the upper surface of the slider 41. All of them are configured to move forward and backward by the cylinder device 40 together with the slider 41.

In this embodiment, the blank 11 is supplied to the press machine body 12 as follows. That is, first, in the stage S1, the blank 11 separated and held vertically by the magnetic separator 21 of the destack device 20.
Is suctioned and raised by the vacuum cup 24 by operating the cylinder device 25, and the blank 11 is attracted to the lower surface of the first magnet conveyor 31 of the intermediate transfer device 30,
With this first magnet conveyor 31, the press machine main body 12
The sheet is intermittently fed by one feed pitch P in the direction of.

Next, at the stage S2, the double blank detector 36 detects the double blank 11 suction. Then, in the stage S3, based on the detection result in the stage S2, when the two blanks 11 are overlapped, the blanks 11 are discharged by the two-blank discharging means 37, and the bucket 38
To house. When the blank 11 is in a normal state, the two-blank discharging means 37 is not operated, and the blanks 11 are intermittently returned to the press machine body 12 by the first magnet conveyor 31 one by one. Send only one feed pitch P.

Then, in the stage S4, the blank 11 is transferred from the first magnet conveyor 31 to the second magnet conveyor 32, where the first magnet conveyor 31 is delivered.
The lower surface conveyance by 31 is switched to the upper surface conveyance by the second magnet conveyor 32. At this time, the gap between the first magnet conveyor 31 and the second magnet conveyor 32 is approximately equivalent to the plate thickness of the blank 11, and the magnet 33A for the first magnet conveyor 31 has a weak magnetic force. The magnet 33B for the second magnet conveyor 32 has a stronger magnetic force, so the first magnet conveyor
The blank 11 conveyed by the lower surface by 31 is automatically transferred to the second magnet conveyer 32, and is conveyed by the second magnet conveyer 32 on the upper surface toward the press machine body 12.

Finally, in the stage S6, the cylinder device 42 is operated to push up the blank 11 attracted and held on the upper surface of the second magnet conveyor 32 by the chute 39 to lift the blank 11 from the second magnet conveyor 32. .. Then, a blank placed on the upper surface of the chute 39
The feed bar 13 of the press machine body 12 moves 11 by the feed stroke FS and sends it to the stage S7 on the press side. As described above, the blank 11 is supplied to the press machine body 12.

In the press working, the die of the press machine body 12 is replaced according to the type of the blank 11,
According to this, it may be necessary to switch the feed stroke FS of the feed bar 13 on the press side.
In this case, the cylinder device 40 moves the second magnet conveyor 32 and the like forward and backward in the feeding direction of the blank 11 (X direction in the drawing) (two-dot chain line in the drawing). At this time, the positions of the stages S5 and S6 change as the second magnet conveyor 32 moves, but the stage where the blank 11 is delivered
The position of S4 does not change.

According to the present embodiment as described above, the first magnet conveyor 31 is provided in the middle of the intermediate transfer device 30 (stage S4).
The blank 11 from the second magnet conveyor 32 to the second magnet conveyor 32, and the first magnet conveyor 31 transfers from the lower surface to the second magnet conveyor 32 to transfer the upper surface, so the stage S6 (press idle stage) moves upward. A sufficient space can be secured. For this reason,
At the stage S6, it is possible to easily apply oil to the blank 11 before press working from above the blank 11.

Further, as described above, since the upper surface conveyance is switched on the stage S4, the chute 39 is used to separate the blank 11 from the second magnet conveyor 32 on the stage S6.
It is possible to increase the vertical movement range of the feed bar 96 as in the conventional example, and the vertical stroke of the knockout device 84 and the vertical blank holder 85 does not become long, and the blank 11 is slightly moved. The blank 11 can be removed by moving the blank 11 upward. For this reason,
Knockout device 84 and lift blank support 85 of the conventional example
Compared with the case of, it is possible to shorten the lifting stroke of the chute 39 which is a device for moving the blank 11 upward,
The operation time can be shortened, and the stability of the posture of the blank 11 can be secured.

Further, since the second magnet conveyor 32 and the like can be moved forward and backward in the feed direction of the blank 11 by the cylinder device 40, the position of the stage S6 (press idle stage) can be switched. For this reason,
Feed bar accompanying replacement of mold of press machine body 12
13 feed strokes FS can be switched.

The first magnet conveyor 31 and the second magnet conveyor 32 have a first motor 34 and a second motor 35, respectively, so that the feed speed of the blank 11 can be changed individually. Therefore, when the position of the stage S6 is switched corresponding to the switching of the feed stroke FS of the feed bar 13 accompanying the replacement of the die of the press machine body 12, that is, the one feed pitch P of the second magnet conveyor 32 is changed. In this case, the feeding speed of the second magnet conveyor 32 can be changed correspondingly.

Further, the destack device 20 does not require a new design and can be the same as the conventional one. Since the intermediate transfer device 30 is provided with the two-blank detector 36, the two-blank discharge means 37, and the bucket 38, it is possible to perform two-sheet suction and two-sheet discharge of the blank 11 in the same manner as in the conventional case. it can.

In the stage S4, the gap between the first magnet conveyor 31 and the second magnet conveyor 32 is about the thickness of the blank 11, and the magnet for the first magnet conveyor 31 is used. The magnetic force of 33A is weak and the magnet 33 for the second magnet conveyor 32
Since the magnetic force of B is strong, the blank 11 can be delivered and received smoothly, and the blank 11 can be delivered without using any other device such as a thrusting cylinder.

FIG. 2 shows another embodiment of the present invention. In the figure, the intermediate transfer device 50 includes a first magnet conveyer 51 that is a first moving unit that sucks and holds the blank 11 on the lower surface and a second moving unit that sucks and holds the blank 11 on the upper surface. There is a blank 11 on a second magnet conveyor 52 and a first magnet conveyor 51.
A magnet 53A that is an attraction means for attracting
The second magnet conveyor 52 has a magnet 53B that is an adsorption means for adsorbing the blank 11, a first motor 54 that drives the first magnet conveyor 51, and a second motor 55 that drives the second magnet conveyor 52. is doing.

The second magnet conveyor 52 includes an idle rotor 56 that can move up and down and a slide rotor 57 on the press machine body 12 side that can move forward and backward in the feed direction of the blank 11.
And have. The idle rotating body 56 is configured to be able to move up and down by a cylinder elevating device 58 which is a second magnet conveyor end expansion / contraction means. The slide rotating body 57 is guided by the guide 59 and is thus a blank.
It is configured to be able to move forward and backward in the feeding direction of 11, and is always urged by the spring 60 toward the press machine body 12 side. Also, a magnet for the second magnet conveyor 52
The end portion 53C of the 53B (end portion on the press machine body 12 side) is slidable in the feed direction of the blank 11 with respect to the magnet 53B. This magnet 53B moves the slide rotor 57 forward and backward. Accordingly, the blank 11 is configured to expand and contract in the feeding direction.

Then, the second magnet conveyor 52 operates the cylinder elevating device 58 to move the idle rotor 56 up and down, and the slide rotor 57 is guided by the guide 59 accordingly, and moves forward and backward in the feeding direction of the blank 11. By doing so, the end thereof is configured to expand and contract in the feed direction of the blank 11. The rest of the configuration of the intermediate transfer device 50 is the same as that of the intermediate transfer device 30 of the above embodiment.

In such another embodiment, when it is necessary to switch the feed stroke FS of the feed bar 13 on the press side, the cylinder lifting device 58 feeds the end of the second magnet conveyor 52 to feed the blank 11. The position of the stage S6 is switched by expanding and contracting in the direction (two-dot chain line in the figure). Further, the supply of the ordinary blank 11 to the press machine main body 12 is performed in the same manner as in the case of the intermediate transfer device 30 of the above-mentioned embodiment.

According to such another embodiment, since the end of the second magnet conveyor 32 can be expanded and contracted in the feed direction of the blank 11 by the cylinder lifting device 58, the position of the stage S6 (press idle stage) can be changed. It can be switched. Therefore, the feed stroke FS of the feed bar 13 accompanying the die replacement of the press machine body 12
Can be changed. Further, since the structure is the same as that of the above-mentioned embodiment except for the extension / contraction mechanism of the end of the second magnet conveyor 32 by the cylinder lifting device 58, other effects similar to those of the above-mentioned embodiment can be obtained.

The present invention is not limited to the above-mentioned embodiments, and the following modifications and the like are also included in the present invention. That is, in the destack device 20 of each of the embodiments, the suction member is the vacuum cup 24, but it may be an electromagnetic magnet or the like, in short, the blank 11 can be securely attracted, and the first magnet conveyor. It is only necessary to be able to pass the blank 11 to 31, 51.

Further, the first moving means and the second moving means are respectively the first magnet conveyor 3 as in the above-mentioned embodiments.
1, 51, the second magnet conveyor 32, 52 need not be, for example, a conveyor using a vacuum duct that sucks the blank 11 by suction of air, or the like,
In essence, the first moving means may be one that can carry the lower surface of the blank, and the second moving means can be one that can carry the upper surface of the blank.

In each of the above embodiments, the delivery of the blank 11 from the first magnet conveyor 31, 51 to the second magnet conveyor 32, 52 is carried out by the first magnet conveyor 31, 51.
Magnets 33A, 53A for 51 and second magnet conveyor 3
Although it is performed by utilizing the strength of the magnetic force with the magnets 33B, 53B for 2, 52, for example, the blank 11 is provided with the second magnet conveyor 32, by using a thrusting cylinder or the like.
The transfer may be carried out by dropping it onto the upper part 52. In short, it is sufficient to smoothly switch from the lower surface transfer to the upper surface transfer.

Further, in each of the above embodiments, the intermediate transfer device
There were six stages S1 to S6 in 30, 50,
The number of stages is arbitrary, for example, when it is desired to have many functions, the number of stages may be six or more, in short, from the stage S1 receiving the blank 11 from the destack device 20 and the lower surface conveyance. It suffices that the stage S4 that switches to the upper surface conveyance and the stage S6 that delivers the blank 11 to the press machine body 12 are provided.

In the above embodiment, the second magnet conveyor position switching means of the intermediate transfer device 30 is a cylinder device.
Although it is set to 40, another drive mechanism may be used as long as it can move the second magnet conveyor 32 and the like in the feeding direction of the blank 11 (X direction in the drawing).

Furthermore, in the other embodiment, the second magnet conveyor end expansion / contraction means of the intermediate transfer device 50 is the cylinder elevating device 58, but it may be another drive mechanism, in short, the second magnet. It is sufficient that the end of the conveyor 52 can be expanded and contracted in the feed direction of the blank 11.

[0052]

As described above, according to the first aspect of the present invention, the blank is transferred from the first moving means to the second moving means in the middle of the intermediate conveying device, and the lower surface is conveyed to the upper surface. Since it is switched, it is possible to secure a sufficient upper space in the press idle stage, it is possible to easily apply oil to the blank before press working from above the blank, and the operating time of the device in the press idle stage In addition to being able to shorten, it is possible to secure stability of the blank posture.

According to the second and third aspects of the present invention, the second moving means is moved back and forth in the blank feeding direction, or the end of the second moving means is expanded and contracted in the blank feeding direction. With this, since the position of the press idle stage can be switched, it is possible to cope with the switching of the feed stroke of the feed bar accompanying the replacement of the die of the press machine body.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a configuration diagram showing another embodiment of the present invention.

FIG. 3 is a configuration diagram showing a conventional example.

[Explanation of symbols]

10 Material supply device 11 Blank 12 Press machine body 13 Feed bar 20 Destack device 24 Vacuum cup 30,50 Intermediate transfer device 31,51 First transfer means First magnet conveyor 32,52 Second transfer device Second magnet conveyor 39 chute 40 second magnet conveyor position switching means cylinder device 58 second magnet conveyor end expansion / contraction means cylinder lifting device

Claims (3)

[Claims] 1. An intermediate transfer device for receiving a blank, which is a material for press working, from an adsorption member of a destacking device and sending it to a main body of a press machine, the intermediate transfer device having first moving means and second moving means. The moving means sucks and conveys the blank received from the suction member of the destacking device on its lower surface and sends it to the second moving means, and the second moving means receives the blank received from the first moving means. An intermediate transfer device characterized by suction transfer on the top surface and sending to the press machine body. 2. The intermediate transfer device according to claim 1, wherein the second moving means moves forward and backward in the blank feeding direction. 3. The intermediate transfer device according to claim 1, wherein the end of the second moving means expands and contracts in the blank feeding direction.