JPS6016448Y2 - tray unloader - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tray unloader device that receives and takes out workpieces left on an upper mold.

When punching a blank that is large compared to the thickness of the plate material, if the die structure is such that the blank is dropped into the lower die, the accuracy of the blank that is punched will be bad.

Therefore, in punching large blanks that require high precision, a method is adopted in which the blank is left on the upper mold side.

For this purpose, a tray unloader is required.

In conventional tray unloaders, the tray is guided by a guide provided in the frame of the press, and the tray is stroked in synchronization with the raising and lowering movement of the slide.

According to this method, if the tray is made larger to handle large blanks, the weight of the tray increases due to its rigidity, and in order to avoid interference between the tray and the slide, the stroke length of the press is There were other problems, such as the need to treat the dog as a dog.

The present invention was made to solve this problem.

Hereinafter, an explanation will be given based on one embodiment of the present invention.

In FIG. 1, the swing lever 8 is rotatably assembled to the frame 1 of the press.

The tray guide 7 is fixed to the lower surface of the slide 2.

In detail, the tray guide 7 is a long guide (fixed) on both sides of the upper mold 4 on the slide lower surface on both sides of the tray 6 in the stroke direction in parallel with the lower surface, and has a longitudinal groove on its outer surface. be.

One end of the tray 6 is rotatably connected to a swing lever 8, and a roller or the like provided thereon is guided by a groove of a tray guide 7 at the other end.

The tray 6 is provided with a blank pit 6a.

The cylinder 14 is fixed to the side surface of the slide 2, and a pawl 15 is fixed to the piston rod.

The claw 15 serves to scrape off blanks on the tray 6.

The lever 9 has a structure in which one end thereof is guided by a guide section provided in the longitudinal direction of the swing lever 8, and a shaft 16 rotatably held by the frame 1 is fixed to the other end.

The lever 9 is fixed to the shaft 16 using a cotter, and by providing a plurality of cotter grooves on the lever 9, the lever 9
By changing the length of the so-called lever, the stroke length of the tray can be changed.

The pinion 10 is fixed to the shaft 16 and meshes with a rack 11 provided on the slide 2 part.

The rack 11 is connected to a die-hide adjustment device (not shown) built into the slide 2, a sprocket 18 attached to the worm shaft 17 of the die-hide adjustment device, a worm wheel 21 on which a chain 713, a sprocket 19 are attached, and a screw mechanism. tray 6 is connected with the die-hide adjustment.
This prevents the phase from shifting.

A conveyor 12 is provided below the tray 6 to convey blanks that have fallen from the tray 6.

The operation will be explained below.

When the slide 2 descends, the rack 11 also descends, and the tray 6 escapes from between the upper die 4 and the lower die 5 via the pinion 10, lever 9, and swing lever 8.

When the slide 2 comes to the vicinity of the bottom dead center, punching is performed, and the punched blank is sucked by a vacuum cup provided on the upper die and remains on the upper die 4.

When slide 2 rises, rack 11 also rises, so
Contrary to the above, the tray 6 is inserted between the upper mold 4 and the lower mold 5.

Here, the blank adsorbed to the upper mold 4 by the cup is released and dropped onto the tray 61.

When the slide descends again, the tray 6 escapes from between the upper and lower molds.

When the slide 2 moves up after reaching the bottom dead center, the tray 6 enters between the upper and lower molds.

Immediately before the tray begins to enter the mold, the cylinder 14 is
jJ and lowers the claw 15, the blanks on the tray 6 are scraped onto the conveyor 12 by the claw 15.

Thereafter, this operation is repeated, and the blanks are sequentially received by the tray 6 and taken out onto the conveyor 12.

Since the present invention has the above configuration, (a) Since the tray 6 is received by the slide part,
Even when the press is large in size, it is lightweight and the number of strokes of the press can be increased.

(b) Since the tray 6 is guided by the slide portion, there is an effect that interference between the slide and the tray does not occur.

[Brief explanation of the drawing]

Figure 1 is a front view, 1 is the frame of the press, 2 is the slide of the press, 3 is the bolster, 4 is the upper mold, 5 is the lower mold, 6 is the tray, 7 is the tray guide, 8 is the swing lever 9
is a lever, 10 is a pinion, 11 is a rack, 12 is a conveyor, 13 is a check 7. 14 is a cylinder, 15 is a pawl, 16
is a shaft, 17 is a worm shaft, 18 is a sprocket, 19 is a sprocket, 20 is a worm shaft, and 21 is a worm wheel.

Claims (1)

[Scope of utility model registration request] In an unloader device that receives and takes out workpieces on the slide side of the press, there is a swing lever 8 that is supported at one end by the frame of the press and is swingable, and a swing lever 8 that is mounted parallel to the mold on the left and right sides of the upper mold on the lower surface of the slide of the press. The tray guide 7 is long in the front and back direction, and its base is connected to the tip of the swing lever 8, and the other end is connected to the tray guide 7.
The tray 6 is rotatably provided on the press frame, and its tip is guided by the longitudinal guide section of the swing lever 8, and the tray 6 is rotated reciprocally through the rack and pinion mechanism by the vertical movement of the slide of the press. A lever 9 to be driven, a cylinder 14 which is provided downward on the slide side of the press and which raises and lowers the claw 15 provided at the tip of the piston rod to the upper surface of the tray 6 in conjunction with the vertical movement of the slide; A tray unloader characterized in that it is provided with a pit hole 6a provided on a bar near the base, into which a workpiece scraped out by a claw 15 falls.