JPS6331793Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a transfer bar dividing device installed in a three-post transfer press.

Traditionally, three-post transfer presses use five separate transfer bars connected to each other.
When pulling out two moving bolsters using a die chain or the like, the following procedure is used to divide each transfer bar, and the transfer bar on each moving bolster is pulled out of the press body together with the bolster.

In other words, the conventional dividing procedure described above is to first raise one moving bolster to support the transfer lever above the bolster, then divide the transfer lever connected to this transfer lever in this state, and then raise the other moving bolster. supports the upper transfer bar, and separates the transfer bar connected to this transfer bar.

However, in this method, the two moving bolsters are raised one after another to divide the transfer valve in a fixed procedure, which requires a lot of time and efficiency.

Therefore, a dividing method has been proposed in which two moving bolsters are raised simultaneously to support the upper transfer lever, and the transfer levers connected to these transfer levers are simultaneously divided, thereby shortening the dividing time.

This invention is a transfer server dividing apparatus for carrying out such a dividing method, and one embodiment thereof will be described in detail below with reference to the drawings.

In the figure, 1 indicates two moving bolsters 3,
4, with uprights 1a and 1 on the workpiece loading and unloading sides and in the center.
b, 1c, and these uprights 1a,
A pair of transfer bars 2 are arranged in parallel along the workpiece conveyance direction A between the front and back of 1b and 1c. These transfer bars 2 are movable in a lift direction, a clamp direction, and a feed direction by a lift mechanism, a clamp mechanism, and a feed mechanism (not shown), and each transfer bar 2 is connected to each upright 1a, 1b, 1c and a moving bolster. The first to fifth transfer servers 2 ₁ to 3 every 3 and 4
It is divided into 2 ₅ parts. Each of the first to fifth transfer bars 2 ₁ to 2 ₅ is connected by a connecting device 24 so as to be freely splittable, and the central upright 1
A splitting device of this invention is provided between the transfer bar 23 and the third transfer bar ₂₃ . As shown in FIG. 2 and subsequent figures, this dividing device has a board 6 attached to the side surface of the transfer bar 2 of the central upright 1b at a distance in the left-right direction. A guide rail 7 is installed parallel to the guide rail 2. A sliding plate 8 is provided between these guide rails 7 so as to be movable along the guide rails 7. A pair of protrusions 8a and 8b are provided on the upper surface of the sliding plate 8, spaced apart in the moving direction, and one of the protrusions 8a has a proximal end protruding toward the center of the substrate 6. The tip of a piston rod 9a of an operating cylinder 9 is pivotally connected to the bracket 6a, and the intermediate portion of a pusher 10 is pivotally connected to the other protrusion 8b by a pin 11. A shaft cylinder 10a is provided at one end of the pusher 10 in a direction perpendicular thereto, and a rotating shaft 13 having rollers 12 at both ends is supported on this shaft cylinder 10a. Further, the other end of a tension spring 14 whose one end is engaged with the sliding plate 8 is attached to the shaft tube 10a, and each roller 12 is caused to project onto the guide rail 7 by these tension springs 14. The cam plate 15 is pressed against the cam surface 15a of the cam plate 15. The cam surface 15a of the cam plate 15 is higher on the operating cylinder 9 side and lower on the opposite side, and these are connected by an inclined cam surface 15b. When rolling on the cam surfaces 15a and 15b, it rises from the standby position shown by the solid _line in _FIG . It is adapted to come into contact with a block 16 provided therein. On the other hand, a bottom portion of a locking mechanism 20 is fixed to the side surface of the central upright 1b facing the transfer bar 2, located between the respective boards 6.

The lock mechanism 20 is housed in a box-like case 20a.
The lock cylinder 21 is housed so that the piston rod 21a faces the third transfer bar ₂₃ side.

And the piston rod 2 of this lock cylinder 21
The tip of the lock pin 1a is connected to a lock pin 22 supported on the side of the third transfer lever ₂₃ of the case 20a so as to be freely protrusive and retractable.
This allows the tip of the lock pin 22 to be fitted into a recessed hole 2a provided on the side surface of the third transfer bar ₂₃ .

In the figure, reference numeral 23 denotes a solenoid valve provided between each of the operating cylinders 9 and a pressure source (not shown), and by turning on and off the solenoid valve 23, each of the operating cylinders 9 can be operated.

Next, to explain the operation, when the transfer bar is divided into two parts by a die chain engine, etc., each moving bolster 3, 4 is simultaneously raised to support the second and fourth transfer bars ₂₂ , ₂₄ from below, and in this state, the moving bolsters 3 and 4 are locked. Lock cylinder 21 provided in mechanism 20
Hydraulic pressure is supplied to the bottom side of the transfer lever, the lock pins 22 are protruded by each lock cylinder 21, and the tips of the lock pins 22 are inserted into the recessed holes ₂ of the third transfer bar 23.
a to lock each third transfer bar 2 ₃ so that it does not move in the feed direction.

In this state, when pressure is supplied to the bottom side of each operating cylinder 9, the sliding plate 8 moves in the direction of the second and fourth transfer bars 2 ₂ and 2 ₄ (in the direction of arrow B in FIGS. 2 and 3). Therefore, the roller 12 at the base end of the pusher 10 supported by the sliding plate 8 slides down the inclined surface 15b of the cam 15, and the tip of the pusher 10 rises to the pressing position shown by the imaginary line in FIG. are block 1 of the second and fourth transfer servers 2 ₂ and 2 ₄
6. In this state, the operating cylinder 9
By advancing the sliding plate 8, the pusher 1
0 pushes the second and fourth transfer bars 2 ₂ and 2 ₄ , and the lock mechanism 20 pushes the central upright 1 .
The second and fourth transfer bars 2 ₂ and 2 ₄ are simultaneously separated from the third transfer bar 2 ₃ locked on the b side.

When the separation of the second and fourth transfer bars 2 ₂ and 2 ₄ is completed, they are carried out of the press body 1 together with the moving bolsters 3 and 4, and the mold and the second and fourth transfer bars 2 2 _{and 2} are removed by external setup. 2 ₄ is replaced, and once the replacement of the mold and fingers is completed, the second and fourth transfer bars 2 _{2 ,} together with the moving bolsters 3 and 4 are replaced again.
2 ₄ is carried into the press main body 1, and the first to fifth transfer bars 2 ₁ to 2 ₅ are connected by the opposite action to that at the time of division.

As explained in detail above, this idea is such that the second and fourth transfer bars are simultaneously separated from the third transfer bar in the center and transported out of the press body together with the moving bolster. The bolster is raised to support the transfer lever above the bolster, and in this state, the transfer lever connected to this transfer lever is divided, and then the other moving bolster is raised to support the upper transfer lever, and this transfer lever is Compared to a method that divides a transfer fiber connected to a transfer fiber, it is possible to divide the transfer fiber in a shorter time. As a result, the time required for die-cutting, etc. is also improved, and productivity can be improved.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, in which FIG. 1 is an overall schematic diagram, FIG. 2 is a partially cutaway plan view of the device, FIG. 3 is a view seen from the direction of FIG. 2, and FIG.
FIG. 1 is a view seen from the direction of the arrow.
... Uplight, 2 ... Transfab, 3, 4
...Moving bolster, 8...Sliding plate, 9...
Operating cylinder, 10... pusher, 15... cam plate, 15a, 15b... cam surfaces, 16... block.

Claims (1)

[Scope of utility model registration request] Two moving bolsters 3, 4, these moving bolsters 3, 4 and each upright 1a,
Transfer bar 2 divided into multiple parts 1b and 1c
In the three-post transfer press 1 equipped with
Central upright 1b of the above transfer press 1
A locking mechanism 20 for temporarily locking the third transfer lever ₂₃ is provided, and sliding plates 8 are provided on both sides of the locking mechanism 20 to be movable along the transfer lever 2 by actuating cylinders 9. is provided with a pusher 10 whose intermediate portion is swingably supported, and the proximal end of the pusher 10 is pressed against a cam plate 15 by a biasing means.
As the sliding plate 8 moves, the tip of the pusher 10 is brought into pressure contact with the cam surfaces 15a and 15b of the pusher 10.
The transfer bar is configured to be able to freely rise and fall toward the fourth transfer bar 2 ₂ , 2 ₄ side, and has a block 16 protruding from the second and fourth transfer bar 2 ₂ , 2 ₄ sides with which the tip of the pusher 10 engages. Splitting device.