JP2748140B2 - Transfer press equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer press apparatus having a built-in transfer apparatus for material feeding and automatically performing press working in multiple steps sequentially.

(Prior Art) Conventionally, as the transfer press apparatus of the above-mentioned example, there is an apparatus described in Japanese Utility Model Laid-Open No. 63-76331, for example.

That is, a plurality of press working stations provided before and after the idle station are provided with a feed bar that advances and returns by a fixed stroke, and only the fingers located in front of the idle station are set to the feed bar advance and return movement amounts described above. This is a three-post transfer press device configured to move by a predetermined number of times, for example, twice a constant stroke.

In this conventional transfer press device, the finger in front of the idle station is moved by twice the stroke of the feed bar by, for example, a double stroke device using a rack and pinion mechanism, so that the work clamped by the above-mentioned finger is moved to the idle station. While there is an advantage that the operation loss to be kept is eliminated and the installation of the idle station can be omitted, there are the following problems.

In other words, since the pair of left and right long feed bars are located inside the respective columns of the three-column structure, when changing the fingers when changing the mold, it is necessary to set up the inner side of the column inside the relatively narrow work space. However, there is a problem that the workability of replacing the finger is poor.

(Object of the Invention) It is an object of the present invention to provide a transfer press device capable of externally setting up fingers and greatly improving the finger replacement workability.

(Structure of the Invention) The present invention provides a feed bar that advances and returns the press working station by a constant stroke.
A three-post transfer press device configured to move only a finger located in front of an idle station by a predetermined amount with respect to an advance / return movement amount of the feed bar, wherein a front end corresponding portion and a rear end corresponding to each of the columns. The feed bar is configured to be separable from the floor, and a synchronization mechanism for moving the finger by a predetermined amount with respect to the feed bar is configured to be detachable from the floor member. The feed bar is supported on a carrier movable in the transport direction on the bar, and the feed bar has two rollers before and after stretching a belt, the belt is connected to the carrier, and the belt is fixed to a floor-side member. The transfer portion is a transfer press device configured to be detachable from the floor-side member.

(Effects of the Invention) According to the present invention, when a finger is exchanged at the time of mold replacement, the feed bar having the separation portions at the front end corresponding portion and the rear end corresponding portion of each of the columns described above is connected to the above-mentioned synchronous bar. With the mechanism, the finger can be taken out from the front and rear columns to the outside of the column, so that the finger can be set up outside, and there is an effect that the workability of finger replacement can be greatly improved.

In addition, in the three-post transfer press apparatus, the finger on the carrier located in front of the idle station is configured to move by a predetermined amount with respect to the moving amount of the feed bar. Therefore, there is an effect that the work can be moved onto the mold in the next step without stopping the work at the second pillar portion.

In addition, the belt fixing portion of the constant magnification moving mechanism is configured to be detachable from the floor side member. With this, when the feed bar in front of the idle station is pulled out, the carrier can be moved with respect to the feed bar,
The fingers can be exchanged by projecting the carrier in the traveling direction from the bolster, and this exchange operation is facilitated.

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

The drawing shows a transfer press device, and FIGS.
In this figure, a three-post transfer press apparatus is provided with a pair of left and right first columns 1,1, a second column 2,2, and a third column 3,3 at regular intervals. The first bolster 4 is provided at the center between the pillars 1 and 1 and the second pillars 2 and 2, and the second pillars 2 and 2 and the third pillar.
A second bolster 5 is installed at the center of each of the third and third bolsters.

Further, a carry-in station 6 is provided in a stage preceding the first bolster 4, and a carry-out means 7 for carrying out a press-worked work (not shown) is arranged in a stage subsequent to the second bolster 5. .

A space between the pair of left and right second pillars 2 is set as an idle station area 8, and two press working stations 9, 10, 11 and 12 are set at the front and rear stages of the idle station area 8, respectively. I have.

Then, a first lower mold 13 is disposed on the first bolster 4 in the first press working station 9, and the first upper mold 14 can be raised and lowered at a position above and opposite to the first lower mold 13. It is arranged.

Similarly, a second lower mold 15 is disposed on the first bolster 4 in the second press working station 10 and a second upper mold 16 can be raised and lowered at a position above and opposed to the second lower mold 15. It is arranged in.

Also, the second press working in the third pressing station 11
A third lower mold 17 is disposed on the bolster 5 and the third lower mold 17 is provided.
A third upper die 18 is provided at a position above and opposite to 17 so as to be able to move up and down.

Further, a fourth lower mold 19 is disposed on the second bolster 5 in the fourth press working station 12, and a fourth upper mold 20 can be raised and lowered at a position above and opposed to the fourth lower mold 19. It is arranged.

Then, a constant stroke S is set between the above-described loading station 6 and the first press working station 9, and a constant stroke S is set between the first and second press working stations 9, 10. The distance between the third press working stations 10 and 11 is set to S times (2S) of the constant stroke S, and the distance between the third and fourth press working stations 11 and 12 is set to the constant stroke S.

On the other hand, a pair of left and right first feed bars 21 and 21 facing each other with the above-described loading station 6 interposed therebetween, and a pair of left and right second feed bars facing each other with the above-described first and second press working stations 9 and 10 interposed therebetween. A pair of left and right third bars 22 and 22 facing the idle station area 8 described above.
Feed bars 23, 23 and a pair of left and right fourth feed bars 24, 24 facing each other with the above-described third and fourth press working stations 11, 12 provided therebetween. 23 and 24 are connected in a straight line.

Each feed bar 21 to 24 connected in a straight line in this way
The transfer device repeats the clamp, up, advance, down, unclamping, and return transfer operations. The workpiece is advanced by a predetermined stroke, the workpiece is lowered at the time of the down operation, the workpiece is released at the time of the unclamping operation, and returns to the standby position at the time of the return operation.

In addition, fingers 25 and 26 for holding the work from the left and right are exchangeably mounted on the feed bars 21 to 24 described above.

However, only the finger 26 corresponding to the second press working station 10 located in front of the idle station area 8 under the normal state is different from the other fingers 25 in that the advance and return of the feed bars 21 to 24 described above are performed. A predetermined double movement, for example, a double movement (2
S) It is configured to do so.

That is, as shown in FIG. 3 to FIG. 8, the roller shaft 2 is provided at a substantially central portion and a portion near the rear end of the second feed bar 22.
7 and 28 (see FIGS. 6 and 7), and the first belt roller 30 is connected to these roller shafts 27 and 28 via bearings 29 and 29.
And the second belt roller 31 are fitted to each other, and a belt 32 is stretched between these belt rollers 30, 31.

As shown in FIG. 6, both ends 32a and 32b of the above-mentioned belt 32 are engaged with belt lock pins 34 and 34 fixed to a lock bracket 33, respectively.

Also, the carrier rails 35, 36 divided as shown in FIG. 3 are fixed to the upper surfaces of the second feed bar 22 and the third feed bar 23, and as shown in FIG. Carrier guide 37 that can slide along
The carrier 38 is fixed on the upper surface of the
As shown in the figure, the above-mentioned fingers 26 are mounted so as to be exchangeable. Further, FIG. 7 shows a part of the carrier 38 described above.
As shown in FIG. 8, a belt connecting bracket 39 is fixed by welding, and a part 32c of the belt 32 is clamped between upper and lower clampers 40, 41. In this state, the above-mentioned clampers 40, 41 are connected to two bolts 42, 41.
The carrier 38 is configured to run in conjunction with the belt 32 by being connected to the above-mentioned bracket 39 by 42.

Here, when the above-mentioned lock bracket 33 is fixed to the floor side as shown in FIG.
Travels a distance equal to the stroke S, the carrier 38 and the fingers 26 on the carrier 38 move a total of two strokes (2S).

That is, the carrier 38 and the finger 26 are moved by a double stroke 2S obtained by adding the movement amount S of the belt 32 indicated by the imaginary line α in FIG. 3 and the constant stroke S of the feed bar 22.
Can be moved.

By the way, each of the above-mentioned feed bars 21, 22, 23, 24 has a joint portion at a front end corresponding portion and a rear end corresponding portion of each of the columns 1, 2, 3 as shown in FIGS. At the front end corresponding portions and the rear end corresponding portions of the columns 1, 2, and 3, the above-described feed bars 21 and 2 are respectively provided.
2,23,24 are divided in the front-back direction.

Each of these joints is, for example, as shown in FIG.
L-shaped joint brackets 43 and 44 are bolted up on the upper surfaces of the feed bars 22 and 23, and these two joint brackets 43 and 44 are connected to be dividable by bolts 45 and nuts 46.

On the other hand, as shown in FIG.
, A locking bracket 48 and a guide bracket 49 are welded and fixed via a lower bracket 47.

A plurality of guide rollers 51, 51 for guiding the feed bar rail 50 are supported on the guide bracket 49 as shown in FIG. It is configured to be attached to and detached from 53.

As shown in FIG. 5, the chuck device 52 includes a solenoid 54 fixed to the floor member 53 and a tongue piece on the lower surface of the floor member 53.
A pair of arms 57, 57 pivotally supported between 55, 55 via a pivot 56
And a pin 58 and a solenoid 54 provided at the lower end of the arm 57.
And a pair of levers 61, 61 stretched between a pin 60 provided at the tip of the plunger 59, and the upper ends of the pair of arms 57, 57 as shown by solid lines in FIG. While the locking bracket 48 is engaged with the pawl portions 57a, 57a, when the plunger 59 protrudes downward, the engagement by the above-described locking claw portions 57a, 57a is released as shown by a virtual line β in FIG.

With such a configuration, the synchronization mechanism 62 (the belt 32, the lock bracket 33, and the belt lock pin 34 in this embodiment) configured to move the finger 26 by a double stroke (2S) with respect to the phyto-bar 22 is used. Mechanism) is configured to be detachable from the floor-side member 53.

In short, the finger 26 located in front of the idle station (see the idle station area 8) is supported on the feed bar 22 by the carrier 38 that is movable in the transport direction, and the belt 32 is stretched over the feed bar 22. The belt 32 is connected to a carrier 38, and a portion for fixing the belt 32 to a floor member 53 (see a locking bracket 48) is attached to and detached from the floor member 53. It is configured to be possible.

The illustrated embodiment is configured as described above, and the operation will be described below.

When the transfer device is driven after engaging the locking bracket 48 with the pair of locking claws 57a, 57a of the chuck device 52, the pair of left and right feed bars 21, 2 connected in a straight line are driven.
2, 23, and 24 perform clamping, up, advance, down, unclamping, and return operations.
The work on the first press working station 9 is
The work on the second press working station 10 is the idle station area 8
Passes through the third press working station 11, and the work on the third press working station 11 is transferred to the fourth press working station 12,
The upper works are respectively conveyed to the unloading means 7, and press working in a number of steps is automatically performed.

By the way, when the fingers 25 and 26 are to be exchanged at the time of mold exchange, the exchange operation is performed in the normal state when the return operation of the transfer device is completed.

First, a joint bracket 4 as shown in FIG. 4 is used as a separation portion between the front end corresponding portion and the rear end corresponding portion of each of the columns 1 and 2 described above.
A second feed bar 22 having 3,44 bolts 45 and nuts
In addition to releasing the fastening by the lock 46, the engagement of the locking bracket 48 by the pair of locking portions 57a, 57a of the chuck device 52 is released.

When the second feed bar 22 is pulled out in this state,
Since the second feed bar 22 can be taken out from the space between the first column 1 and the second column 2 together with the synchronizing mechanism 62, the fingers 25 and 26 can be externally set up.
There is an effect that the workability of the 5,26 replacement can be greatly improved.

Similarly, the fourth feed bar 24 includes the second pillar 2 and the third pillar 3
The finger 25 can be taken out from between the outside and the outside setup of the finger 25 can be performed.

The first feed bar 21 can be taken out from the left and right first pillars 1, 1 to the front side to perform the outer setup of the finger 25, and the third feed bar 21 corresponding to the idle station area 8 having no finger can be taken out. There is no need to take out the feed bar 23 at all.

In short, the three-post transfer press apparatus of the above embodiment moves the finger 26 on the carrier 38 located in front of the idle station (see the idle station area 8) by a predetermined amount with respect to the moving amount of the feed bar 22. Make up. For this reason, there is an effect that the work can be moved onto the mold in the next step without stopping the work in the second column 2 portion.

In addition, the fixed part of the belt 33 of the
It is configured to be detachable from 53. Thus, when the feed bar 22 in front of the idle station is pulled out, the carrier 38 can be moved with respect to the feed bar 22, and the carrier 38 is protruded from the bolster 4 in the traveling direction to replace the finger 26. Therefore, there is an effect that this replacement work becomes easy.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a transfer press apparatus of the present invention, FIG. 2 is a schematic side view of the transfer press apparatus, FIG. 3 is an enlarged plan view of a main part of FIG. 1, and FIG. 5 is a sectional view taken along line VV of FIG. 4, FIG. 6 is a right side view of FIG. 5, and FIG. 7 is a view taken along arrow B of FIG. FIG. 8 is an enlarged side view taken along line VIII-VIII of FIG. 1,2,3… Pillar 8… Idle station area 9,10,11,12… Press working station 21,22,23,24… Feed bar 25,26… Finger 30,31… Roller 32 …… Belt, 38 …… Carrier 53 …… Floor side member, 62 …… Synchronization mechanism

Claims (1)

(57) [Claims] 1. A feed bar for moving a press working station forward and return by a fixed stroke is provided, and only a finger located in front of an idle station is moved by a predetermined multiple with respect to the advance and return moving amount of the feed bar. A three-post transfer press device, wherein the feed bar is configured to be separable from a front end corresponding portion and a rear end corresponding portion of each of the columns, and a synchronization mechanism that moves the finger a predetermined number of times with respect to the feed bar. The finger, which is configured to be detachable from the floor-side member and is located in front of the idle station, is supported on a feed bar by a carrier that is movable in the transport direction, and the feed bar includes two front and rear rollers that stretch a belt. A part connected to the carrier and fixing the belt to the floor member Detachably configured transfer press apparatus and the floor side member.