JPH0258180B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a material supply device for supplying plate-like material for processing machines such as presses,
In particular, the present invention relates to a material supply device that is not subject to any restrictions on the length of the material when supplying a fixed length material.

BACKGROUND ART Conventionally, an air feeder as shown in FIG. 1 has been frequently used to supply plate-shaped materials to processing machines such as presses.

In the figure, an air feeder 1 includes a fixed clamp 2, a movable clamp 3, and an air cylinder 4 that moves the movable clamp 3 in the material supply direction. A pair of air feeders 1 are installed on a material supply side and a material discharge side of a press machine (not shown). In this way, the material M is clamped by the moving clamp 3 and transferred to the air cylinder 4.
After being sent in the supply direction by the drive of , it is held between the fixed clamps 2 and subjected to a predetermined processing operation by a press machine. During this time, the movable clamp 3 returns to its original position in an open state and prepares for the next feeding operation.

By the way, in such an air feeder,
Since the processing machine is equipped with a pair of air feeders before and after the processing machine, the plate material must have a length that is longer than the length that straddles the pair of air feeders. cannot,
The disadvantage was that the material that could be supplied was limited to strips.

Moreover, the operation of the pair of front and rear air feeders must be synchronized, which has the disadvantage of complicating the structure and increasing costs. In addition, there was also the drawback that errors were likely to occur in the feeding amount of the pair of air feeders, resulting in poor material feeding accuracy.

An object of the present invention is to provide a pair of driving rollers with a sub-roller in view of problems such as limitations on the plate-shaped material that can be supplied due to structural limitations of the material supplying device based on the prior art and variations in feeding accuracy. By having a structure in which a work chucker is installed between the auxiliary rollers, the above-mentioned drawbacks are eliminated, and an excellent material supply system capable of supplying plate-shaped materials of various sizes is achieved. The aim is to provide the equipment.

In accordance with the above object, the present invention has a sub-roller having a small diameter at the end of a pair of main drive rollers, and a long workpiece chucker is detachably inserted between the sub-rollers in the supply direction. However, the work chucker is formed with a slit that opens laterally along the feeding direction, and an expandable tube is housed in the slit, so that it can be used when feeding short length materials. Insert the specified length material into the slit of the work chucker, apply pressure fluid to the tube to expand it and clamp the material, bring the sub roller into contact with the work chucker, and press the sub roller. The work chucker is rotated to run a work chucker to feed the material, and when feeding a strip material, the work chucker is removed and the material is fed by the main roller. The gist of this is to make it possible to

Next, an embodiment of the present invention will be described below with reference to FIG. 2 and the subsequent drawings.

In FIGS. 2 and 3, the drive roller 5 consists of a large-diameter main roller and a sub-roller 7 installed at the end of the main roller and having a smaller diameter than the main roller 6, which are arranged in pairs above and below. The pair of drive rollers 5, 5 are pressed against each other by appropriate known means, so that the distance between their axes can be adjusted. A work chucker 8, which is elongated in the supply direction, is inserted between the auxiliary rollers 7, 7 in a removable manner. The work chucker 8 consists of an upper member 9 and a lower member 10 that are integrated, and a material insertion slit 11 that opens laterally along the longitudinal direction is formed between these members 9 and 10. There is. A groove 12 that opens into the slit 11 is formed in the lower member 10 in the longitudinal direction, and a material holding tube 13 that can be expanded by a pressure fluid such as compressed air is housed in the groove 12. has been done. Furthermore, guide members 14 are attached to the side walls of the upper and lower members 9 and 10. On the other hand, a guide 15 is provided on the machine frame (not shown), and as shown in FIG. The guide member 14 of 8 is slidably engaged with the grip portion 16, and the work chucker 8 is supported so as to be freely movable in the supply direction. Note that 18 is a processing machine such as a press machine, and 19 is a mold.

In the above configuration, when supplying a short standard length material M, the work chucker 8 is moved between the driving rollers 5 and 5.
Insert it between the sub rollers 7, 7. At this time, the distance between the axes of the drive rollers 5, 5 has been opened in advance, and when the upper roller 5 is lowered from this state and the distance between the axes is increased, the sub rollers 7, 7 move over the work chucker 8. The main rollers 6 and 6 are in contact with the lower surface, and a gap is formed between the main rollers 6, 6, which is large enough to allow the regular length material M to pass through. Then, the standard length material M is inserted into the slit 11 of the work chucker 8 from the side, and then a pressure fluid such as compressed air is supplied into the tube 13 to expand the tube 13.
The standard length material M inside is the upper member 9 of the work chuck car 8.
A regular length material M is held between the tube 13 and the tube 13 by being pressed against the lower surface 9a of the tube 13. When the drive rollers 5, 5 are rotated in this state, the work chucker 8 is caused to run by the auxiliary rollers 7, 7, and guided by the guide 15 to move in the supply direction. In this way, the fixed length material M held by the work chucker 8 travels together with the work chucker 8 and is supplied onto the mold 19 of the press 18.

The above operation will be described in detail with reference to FIG. 5. In the state shown in FIG. The tip of the length material M is transported in the direction of the arrow to a position above the mold 19, as shown in FIG. 5B. After being subjected to a predetermined process, for example, a perforation process, the standard length material M is sequentially transferred to a process position, and all processes are completed as shown in FIG. 5C. The standard length material M is further transferred and molded into the mold 1 as shown in FIG. 5D.
9 and reaches the material discharge position, and here, when the pressure fluid is discharged from the material clamping tube 13 to deflate the tube 13, the fixed length material M is discharged by the discharge mechanism as appropriate. Thereafter, the drive roller 5 is reversely rotated to return the work chucker 8 to the original position shown in FIG. 5A in preparation for the next operation.

On the other hand, when feeding a strip material, the work chucker 8 is removed from between the sub rollers 7, and the strip material is held between the main rollers 6 and 6, and then fed to the processing machine 18. It is something.

In the above embodiment, the material holding tube 13 to be inserted into the work chuck car 8 is housed in the groove 12 of the lower member 10.
The present invention is not limited to this, and a groove may be formed in the upper member 9 to accommodate the tube. In this case, it is necessary to hold the tube in the groove by appropriate means such as frictional locking or adhesion so that it does not fall out of the groove. Further, the tubes are not limited to only one side of the material, but may be provided above and below the material insertion slit 11 so as to sandwich the material from both sides.

As described above, according to the present invention, there is provided a pair of driving rollers consisting of a main roller with a large diameter and a sub-roller with a smaller diameter, and a long work chucker is removably inserted between the sub-rollers. However, by forming a longitudinal material insertion slit opening laterally in the work chucker and inserting an expandable material holding tube into the slit,
When supplying a short standard length material, the material is held between a work chucker and the work chucker is run by an auxiliary roller, so that the standard length material is transferred to a processing machine such as a press machine. On the other hand, when supplying a strip material, the work chucker is removed and the main roller of the drive roller is used to supply the material. There are no restrictions on the length of standard length materials, and the shortest length is allowed to be less than the width of the processing machine.
The long length has the excellent effect of allowing strip material.

Furthermore, since the same drive roller is used to supply both the fixed-length material and the strip-shaped material, there is an advantage that a single drive system and control system for supplying the amount are required.

In addition, since the length of the regular length material is supported by the work chuck car while it is being transported and fed, the feeding operation is stable and a high level of feeding accuracy can be achieved. .

[Brief explanation of the drawing]

FIG. 1 shows a conventional example, and FIG. 2 and subsequent figures show embodiments of the present invention. FIG. 2 is a plan view,
3 is a sectional view taken along the line AA in FIG. 2, FIG. 4 is a partial perspective view, and FIGS. 5A to 5D are explanatory views of the operation. 5... Drive roller, 6... Main roller, 7... Subroller, 8... Work chucker, 11... Material insertion slit, 13... Material clamping tube,
14... Guide member, 15... Guide, 18...
Press, 19...Mold, M...Material.

Claims (1)

[Claims] 1 A pair of drive rollers 5, 5 each consisting of a main roller 6 and a sub-roller 7 formed at the end of the main roller and having a smaller diameter than the main roller, and a pair of drive rollers 5, 5, which are removably inserted between the sub-rollers. , and a work chucker 8 which is held between the auxiliary rollers and is movable in the material supply direction, and the work chucker 8 has a slit 11 for inserting material which is opened laterally, and a material insertion slit 11 which is housed in the slit. Expandable material holding tube 1
3. A material supply device comprising: