JPH0128976Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is based on a conveying device within a press machine, particularly a press machine such as a shear press or a blanking press, while continuously feeding coil material.
The present invention relates to a conveyance device suitable for cutting two sheets with one stroke.

[Conventional technology]

Examples of conventional press machine conveyance devices include those shown in Figs.
Publication No. 45233). In the figure, 1 is a lower mold, and 2 is an upper mold.

The lower mold 1 includes a first lower cutting blade 3 and a second lower cutting blade 4.
The upper mold 2, which is a movable part, is provided with a first upper cutting blade 5 and a second upper cutting blade 6, which are paired with the first and second lower cutting blades 3 and 4, respectively. It is being A is a first cutting blade that forms a pair of the first lower blade 3 and upper blade 5, and B is a second cutting blade that forms a pair of the second lower blade 4 and upper blade 6.

Reference numeral H denotes a suction and holding means for suctioning and holding the steel plate material W to be cut, and is provided between the first cutting blade A and the second cutting blade B so as to be movable up and down with respect to the upper die 2, which is a movable part. A magnet roller 8 made of a permanent magnet is supported via a roller holding member 7.
Reference numeral 9 denotes a knock-out member which forcibly knocks out the steel sheet material W, which is attracted and held by the magnet roller 8, downward in conjunction with the upper die 2.
Reference numeral 10 denotes a stopper provided on the lower die 1, which stops the downward movement of the roller holding member 7 by coming into contact with a stopper portion 7a provided on the roller holding member 7. FIG. 5 shows the support structure of the suction holding means H, where 13 is a spring, 14 is a rod to which the roller holding member 7 is attached, and 15 is this rod 14.
It is fixed to the upper die 2 with a bracket that supports it so that it can move up and down. Note that 16 is a holding member, 17 is a holding plate, and 18 is a conveyor.

The steel sheet material W fed into the press machine from the direction of arrow C passes through the first cutting blade A, and then passes through the second cutting blade B while being sucked and held by the magnetic roller 8 of the sucking and holding means H. and is fed by a predetermined feed length. Next, by lowering the upper mold 2 to a predetermined position, the first and second cutting blades A and B cut
Sheet steel plate Wa as shown in Fig. 4,
It is cut into two pieces of Wb and transported in the directions of arrows D and E, respectively. By the way, the suction holding means H is
The steel plate material W is held at a level higher than the cutting level connecting the first lower cutting blade 3 and the second lower cutting blade 4. Therefore, when cutting, it is necessary to release the suction hold and lower the material W to the cutting level. This level matching is performed as follows. During the lowering of the upper die 2, the roller holding member 7
The stop portion 7a abuts against a stopper 10 provided on the lower die 1. When the upper mold 2 further descends, the spring 13 is compressed and the roller holding member 7 remains stopped, while the knockout member 9 descends and forcibly knocks down the steel plate material W onto the lower cutting blades 3 and 4.

[Problems to be solved with the idea]

According to the conventional press machine transfer device equipped with the above-mentioned suction holding means H, after the steel sheet material W passes through the first cutting blade A during the process of being fed into the press machine, it bends downward due to its own weight and falls. , the inconvenience of not being able to reach the second cutting blade B (the state shown by the chain line in FIG. 3) can be prevented.

However, there are the following problems, and there is still room for improvement.

(a) Since the suction holding means H is movable up and down with respect to the upper die 2, which is a movable part, via the spring 13, it is likely to vibrate and the suction of the steel sheet material is unstable.

(b) Since the magnet roller 8 is made of a permanent magnet, and the attraction/holding is released by forcibly pushing it down with the knock-out member 9, the steel plate material W is easily scratched.

(c) Since the lowering of the suction holding means H is stopped by the stopper 10, noise is generated each time.

[Means for solving problems]

This invention, which aims to solve the above-mentioned problems, is an in-press machine conveying device that is provided with suction and holding means for suctioning and holding the steel plate material between the first cutting blade and the second cutting blade of the press machine. In the press, the suction holding means is disposed vertically immovably at the cutting level and is equipped with an electromagnetic magnetic carrier that electromagnetically attracts the steel sheet material in a detachable manner and a roller row that transfers the attracted steel sheet material. This is an in-machine transport device.

〔Example〕

1 and 2 are diagrams showing an embodiment of this invention. Note that parts that are the same as or equivalent to the conventional ones are given the same reference numerals.

In the figure, h is a suction holding means that suctions and holds the steel sheet material W between the first cutting blade A and the second cutting blade B. This attracting and holding means h is different from the conventional one, and includes an electromagnetic magnet carrier 20 incorporating a well-known electromagnet whose magnetic force can be controlled by electric current, and roller rows 21 for transfer are attached along both sides of the electromagnetic carrier 20. . Moreover, it is separated from the upper die 2, which is a movable part, and the steel sheet material W to be fed is placed in the first die.
The lower cutting blade 3 and the second lower cutting blade 4 are arranged vertically and immovably so as to be held in alignment with the cutting level connecting the lower cutting blade 3 and the second lower cutting blade 4. That is, in the illustrated example, the electromagnetic carrier 20 is supported by a brace 23 that passes through a bracket 22 in a direction intersecting the conveying direction, and a digit 2 that passes through this brace 23 in a direction along the conveying direction.
It is supported by a support 25 via a support 4. Therefore, the lowermost surface 21a of the roller row 21 coincides with the cutting level.

Note that 26 is a conveyor that sends out the cut steel sheet material Wa in the lateral direction (direction D in FIG. 4).

Next, the effect will be explained.

With the upper mold 2 open, the roller row 21 of the suction holding means h is located at the cutting level. When the steel plate material W fed in from the direction of arrow C passes through the lower blade 3 of the first cutting blade A, before it bends downward due to its own weight, it passes through the energized electromagnetic magnet carrier 2.
While being attracted to zero, it is smoothly transferred by the rolling of the roller row 21. Then, it naturally transfers to the lower blade 4 of the second cutting blade B (located at the same level as the steel plate material to be transferred), and is further fed by a predetermined length. During this transfer,
The suction holding means h does not vibrate up and down, and suction is performed extremely stably. When the feeding is completed, the upper die 2 is lowered and the cutting operation is performed.
At this time, the steel plate material W remains held at the cutting level, and there is no need to knock it down with a knock-out member as in the conventional case. After disconnection, by simply turning off the power, the attraction force of the electromagnetic magnet carrier 20 disappears and the holding is released. As a result, the cut material Wa naturally falls onto the conveyor 26 and is collected. On the other hand, other cut materials Wb are carried out and collected by the conveyor 18 as in the conventional case.

[Effect of idea]

As explained above, according to this idea,
Since the suction holding means electromagnetically attracts and holds the steel plate material at the cutting level, (a) there is no vertical movement and suction is stable. (b) There is no need to release the adsorption by knocking out, and the material will not be damaged.
(c) Since it is separated from the moving part and no stopper is required, noise is significantly reduced.

[Brief explanation of the drawing]

Fig. 1 is a front view of essential parts of an embodiment of this invention, Fig. 2 is an enlarged sectional view of Fig. 1, Fig. 3 is an overall front view of a press machine incorporating a conventional conveying device, and Fig. 4 The figure is a plan view showing the shape of a steel plate cut, and FIG. 5 is a detailed view of the mounting structure of a conventional suction holding means. 1...lower die, 2...upper die, A...first cutting blade,
B...Second cutting blade, H, h...Adsorption holding means, 2
0...Electromagnetic carrier, 21...Roller row.

Claims (1)

[Scope of utility model registration request] In a press machine conveyance device comprising suction and holding means for suctioning and holding a steel plate material between a first cutting blade and a second cutting blade of a press machine, the suction and holding means is disposed vertically immovably at a cutting level. What is claimed is: 1. A transfer device in a press machine, comprising: an electromagnetic magnet carrier that removably electromagnetically attracts a steel sheet material; and a row of rollers that transfers the attracted steel sheet material.