JPS6322896B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a step-feeding and feeding device for materials used in press machines. It has a suction means which is provided in the holder and is capable of suctioning and holding the material by air suction, and after the suction means suctions and holds the material at a predetermined position,
This invention relates to a device configured to transport a conveyor by driving an endless rotating body to transport and supply a material to another predetermined position.

According to the step-feed supply device, the material supply operation can be performed with high efficiency by effectively utilizing the forming operation time of the press machine, so there is an advantage that the forming time of the entire press process can be greatly shortened. However, on the other hand, since the suction means is transported by a carrier, there is a problem in routing the air suction hose to the suction means.

That is, conventionally, a long air suction hose is installed with a length corresponding to the maximum travel distance of the suction means, and the air suction hose is configured to loosen as the suction means is transported. However, if the air suction hose slackens significantly, The air suction hose has become a serious nuisance, as it tends to get tangled with other objects or workers. Furthermore, in the past, there was no means for detecting a mistake in suction of the material by the suction means, so it was difficult to notice the mistake in suction.

In order to prevent the air suction hose from sagging, it is conceivable that the air suction hose be wound up and unwound by an automatic winding mechanism configured by, for example, energizing a take-up reel with a spring. In this way, tension is applied to the air suction hose by the winding mechanism, and the winding and unwinding of the suction hose are not synchronized with the movement of the suction means. Due to the stopping operation, a sudden force is applied to the suction hose, which may cause the suction hose to be severed.

The present invention was invented to correct the above-mentioned deficiencies, and provides an air suction hose that does not get in the way during work, and also allows immediate detection of mistakes in suction of materials by the suction means. This is what I am trying to do.

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

First, in FIGS. 1 to 3, an endless rotating body 1 such as a belt or chain is wound between a guide wheel 2 and a drive wheel 3, and the drive wheel 3 is connected to a motor 4 that can rotate in forward and reverse directions. It is configured to be driven to rotate in forward and reverse directions. A base 5 is attached to a part of the endless rotating body 1, and the base 5 is guided by a guide member 6 and is configured to be movable in the horizontal direction in FIG. A conveying arm 8 for a conveying element, such as a pipe material, is attached to the base 5 via an air cylinder 7 so as to be able to move up and down, and a pair of suction means 9a and 9b, for example, are attached to the conveying arm 8. Both suction means 9a, 9b are composed of suction cups,
Each of them passes through the transport arm 8 and communicates with an air chamber 25 connected to the central portion of the transport arm 8 .

On the other hand, the other end of the air suction hose 10, one end of which is connected to the air chamber 25, is wound around a winding drum 11 disposed at a predetermined position. The other end of the suction hose 10 is connected to an air compressor 12 via a winding drum 11. 17
is a switching valve.

The drive wheel 3 and the winding drum 11 are interlocked by an endless rotating body 15, such as a belt or a chain, which is wound between winding rings 13 and 14 fixed to these, respectively.

Next, an example of a step-feeding method for press material W will be explained with reference to FIG.
Reference character c denotes three mounting tables, which are divided into, for example, mounting tables 16a and 16c, which are molds of a press machine, and mounting table 16b, which is an intermediate mounting table. These platforms are arranged at equal intervals from both suction means 9a and 9b.

First, with the conveying arm 8 in the solid line position, the air cylinder 7 is lowered, and both the suction means 9a and 9b are simultaneously brought into close contact with both press-molded materials W on both mounting tables 16a and 16b. When the valve 17 is switched while the air compressor 12 is being operated, air is simultaneously sucked into both the suction means 9a and 9b through the air suction hose 10, and both materials W are absorbed by the suction means 9a and 9b. At the same time, it is adsorbed and held. Thereafter, the air cylinder 7 is raised and the transport arm 8 is raised to the solid line position. Next, the driving wheel 3 is rotated by the motor 4 in the direction of the arrow a, and the transport arm 8 is transported by the endless rotating body 1 in the direction of the arrow b to the imaginary line position. Next, the air cylinder 7 is lowered and the two materials W, which are sucked and held by the two suction means 9a and 9b, are transferred to the two mounting tables 16b and 16 for the next process, respectively.
It is transferred onto c. After this, the material suction by both suction means 9a and 9b is released by switching the valve 17, and then the air cylinder 7 is raised and the transfer arm 8 is raised to the imaginary line position. The drive wheel 3 is then reversely rotated by the motor 4 in the direction of the arrow a', and the conveyor arm 8 is conveyed by the endless rotary body 1 in the direction of the arrow b' to the solid line position, whereby the next material stage is transferred. Performs feeding and supply. In this case, actually,
Since the transfer arm 8 is waiting at an intermediate position between the solid line position and the imaginary line position, or is moving in the case of a continuous running type, press molding work is performed on each of the molds 16a and 16c during this time. .

By the way, during the above-mentioned material conveying and feeding operation, the drive wheel 3 drives the winding drum 11 via the endless rotating body 15, and this winding drum 11 rotates in the direction of arrow a or a' of the drive wheel 3. It is rotationally driven in the direction of arrow c or c' in synchronization with. This transport arm 8
When is transported in the direction of arrow b from the solid line position to the imaginary line position, the air suction hose 10 is automatically pulled out from the winding drum 11, and the transport arm 8 is moved from the imaginary line position to the solid line position in the direction of arrow b. When being transported in the direction b', the air suction hose 10 is automatically wound up by the winding drum 11. Therefore, according to this device, the air suction hose 10 is wound around the drum 11 by a length corresponding to the conveying distance of the conveying arm 8 each time.
Since the air suction hose 10 can be pulled out or rolled up from the air suction hose 10, there is no need for the air suction hose 10 to become unnecessarily slack.

As shown in FIG. 4, the other end of the air suction hose 10 is connected to a connection port 18 provided on the winding drum 11, and the connection port 18 is connected to a rotary joint 20 via a connection pipe 19. Furthermore, since the rotary joint 20 is connected to the switching valve 17 side, the winding drum 11 is
The air suction hose 10 can be pulled out and wound up using the air suction hose 10.

Further, this device is equipped with a detection switch for detecting the suction of the material W by both suction means 9a and 9b. That is, as shown in FIG. 5, for example, a diaphragm 21' is provided adjacent to the air chamber 25, and the movable contact 22 of the detection switch 21 is driven by the diaphragm 21'. Then, when air is suctioned by the air suction hose 10 and the material W is suctioned by both the suction means 9a and 9b, negative pressure is created in the air chamber 9, and the diaphragm 21' is bent as shown by the solid line and is movable. The detection switch 21 is configured to be turned on at the contact 22. When the detection switch 21 is turned on, as shown in FIG. 6, a control load, such as an indicator lamp 23, is lit to indicate that the material suction operation by both suction means 9a and 9b has been reliably performed. Ru. At this time, when the material suction operation by both suction means 9a and 9b is not performed, that is, when a suction error occurs, the detection switch 21 is not turned on because the inside of the air chamber 9 does not become negative pressure. It is possible to modify the circuit shown in FIG. 5 so as to light a lamp, sound a buzzer, or prohibit driving of the motor 4 when this occurs.

By the way, the cathode side of the detection switch 21 is grounded via the guide member 6 etc., but the anode side is wired via a lead wire 24. Moreover, the lead wire 24 is routed through the air suction hose 10. In this case, for example, as shown in FIG. 4, the winding drum 11 to which the lead wire 24 is connected is made of a conductor, the shaft support member 26 of the winding drum 11 is made of an insulator, and the winding drum 11 and the shaft supporting member 26 is an electrical rotary joint 2.
The above-mentioned wiring can be easily performed by simply interposing the wire 7.

If the lead wires 24 are routed along the inside of the air suction hose 10 in this manner, there will be no scattering of the lead wires 24, and the risk of wire breakage, shoots, etc. can be eliminated. Note that the lead wires 24 do not necessarily need to be passed through the air suction hose 10, and may be wired by taping or the like at appropriate intervals along the outside of the air suction hose 10.

Further, in the above embodiment, a configuration is shown in which the transport arm 8 is raised and lowered by the air cylinder 7, but the transporter may be raised and lowered by raising and lowering the endless rotating body 1 as a whole, and it is not necessarily necessary to use the air cylinder 7. do not have. When configured as in the embodiment, the air supply/discharge hose of the air cylinder 7 can be wound up and pulled out by the winding drum in exactly the same manner as the air suction hose 10 described above. Furthermore, in the above embodiment, the winding drum 14
Although the winding drum 14 is directly connected to the drive wheel 3, depending on the case, the winding drum 14 may be connected to the guide wheel 2 to indirectly interlock with the drive wheel 3. Further, the winding drum 14 may be made integrally with the driving wheel 3 and the guide wheel 2, and in this case, the winding drum 14 and the driving wheel 3, etc., rotate coaxially.

As described above, the present invention allows the air suction hose to be pulled out or wound up from the winding drum by a length commensurate with the conveying distance of the conveying arm each time, thereby preventing the air suction hose from becoming unnecessarily slack. Because of this structure, the air suction hose does not get in the way during work, making work very easy.

According to the present invention, the air suction hose is wound up and pulled out using a winding drum that rotates in synchronization with the endless rotary body, so that the air suction hose is endless both when it is wound up and when it is pulled out. No force due to the movement of the rotating body is applied at all, so accidents such as the air suction hose being cut can be eliminated.

Further, according to the present invention, since the state of suction of the material by the suction means can be detected by the detection switch, a suction error can be immediately detected.
Very convenient.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a front view of the whole, Fig. 2 is a side view of the conveying arm portion, Fig. 3 is a plan view of the winding drum portion, and Fig. 4 is a plan view of the winding drum portion. The figure is an enlarged cross-sectional view of the main part of the winding drum section.
The figure is an enlarged sectional view of the air chamber and detection switch portion, and FIG. 6 is a circuit diagram. In addition, in the symbols used in the drawings, 1 is an endless rotating body, 3 is a drive wheel, 8 is a transport arm as a transport element, 9a and 9b are suction means, 10 is an air suction hose, 11 is a winding drum, and 15 is a Endless rotating body, 21
24 is a detection switch, and 24 is a lead wire.

Claims (1)

[Scope of Claims] 1. A conveyor conveyed by an endless rotating body such as a belt or a chain, a suction means provided on the conveyor and capable of suctioning and holding a material by air suction, and the above-mentioned endless rotation. The moving body has a drive wheel and a winding drum around which the air suction hose drawn out to the suction means is wound. After adsorbing and holding the material, the endless rotating body is driven by the drive wheel to convey the conveyor to convey the material to another predetermined position, and the winding drum is moved to the drive wheel. a press configured to be driven to rotate in synchronization with the endless rotary body, whereby the air suction hose is pulled out or wound up from the winding drum by a length commensurate with the conveyance distance of the conveyance arm each time. Material stage feeding device for machinery. 2. A conveyor conveyed by an endless rotating body such as a belt or chain, a suction means provided on the conveyor and capable of sucking and holding the material by air suction, and a drive wheel of the endless rotating body, It has a winding drum for winding the air suction hose pulled out on the suction means, and the winding drum and the driving wheel are interlocked, and after the material is suctioned and held at a predetermined position by the suction means. , the endless rotating body is driven by the driving wheel, and when the conveyor is thereby conveyed and the material is conveyed to another predetermined position, the winding drum is driven by the driving wheel to the endless rotating body. A step feed supply of material for a press machine, wherein the air suction hose is pulled out or wound up from the winding drum by a length commensurate with the conveyance distance of the conveyor each time by rotationally driving the air suction hose in synchronization with the conveyance distance of the conveyor. In the apparatus for a press machine, the suction means is provided with a detection switch for detecting suction of the material by the suction means, and a lead wire of the detection switch is wired along the air suction hose. Material stage feeding device.