JPH10286639A - Feed bar for transfer feed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a feed bar for transfer feed which has a finger protective device capable of preventing a finger from being deformed and damaged and relieving time and labor when restoring the finger. SOLUTION: The feed bar is provided with the finger 12 and a block 13 at the side face in the direction for transferring the work by the finger, and the block is freely rotatably connected to the feed bar 7 by a fulcrum pin. On the under surface of the block, a V-groove 13B is provided, and the block is positioned by being pressed by a ball at the top end part of a ball plunger 18 screwing down into the thread hole of the feed bar. The finger 12 is joined to the feed bar by a joining means with specified torque corresponding to the pressure of the ball of the ball plunger 18 to the groove on the rear surface of the block, thus the finger protective device 11 is constituted for the feed bar.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feed bar of a transfer feed for transferring a work to a press working stage in which workpieces are sequentially arranged, and more particularly to a finger protection device provided directly on the feed bar or via a finger plate. is there.

[0002]

2. Description of the Related Art As shown in the attached drawings of Japanese Patent Publication No. 63-38253, a finger is directly fastened to a feed bar of a press machine, for example, a transfer bar of a transfer press in the prior art. Alternatively, a plurality of fingers were attached to a finger plate, and this finger plate was attached to a feed bar.

[0003]

As described above, in the transfer bar of the transfer feed in the prior art, the fingers are bolted to the feed bar directly or through a finger plate. Fingers may be deformed or damaged due to the inertia of the slide and the timing deviation from the slide stroke at the time of press operation or emergency stop at the time of mold matching, and it may take a lot of time to restore the finger installation. And needed labor.

An object of the present invention is to solve the above-mentioned problems and to provide a feed bar of a transfer feed having a finger protection device which prevents deformation and breakage of fingers and reduces time and labor required for restoration. is there.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a transfer feed for conveying workpieces to a press working stage in which the feed bars are sequentially arranged in a row. , And a block is provided on the side surface of the finger on the side of the workpiece conveying direction, and the block is rotatably connected to a feed bar or a finger plate by a fulcrum pin. On the lower surface of the block, a V-shaped groove is provided in the direction of the clamp of the feed bar.
Alternatively, the block is positioned by being pressed by the ball at the tip of the ball plunger screwed into a screw hole provided at a position outside the fulcrum pin of the finger plate. The finger is fastened to the feed bar by the fastening means with a specified torque corresponding to the pressing of the ball of the ball plunger into the groove on the lower surface of the block, and the finger protection device is formed on the feed bar.

In a transfer feed for transferring a work to a press working stage in which a work is sequentially arranged by a feed bar, a finger having a finger protection device is provided on the feed bar directly or via a finger plate. The bar or the finger plate is rotatably connected to a fulcrum pin having at least one fastening means. On the lower surface of the finger, a V-shaped groove is provided in the feed bar clamping direction, and the feed bar,
Alternatively, the finger is positioned by being pressed by the ball at the tip of the ball plunger screwed into a screw hole provided at a position outside the fulcrum pin of the finger plate. The finger is fastened to the feed bar by fastening means of the fulcrum pin with a specified torque corresponding to the pressing of the ball of the ball plunger into the groove on the lower surface of the finger, so that the finger protection device is formed on the feed bar.

[0007]

1 to 3 show a first embodiment of the present invention. As shown in FIG. 1, in a press machine 1 provided with a transfer feed 10, a transfer unit 4 is fixed to a bed 2 and a column 3 of the press machine 1, and a transfer drive mechanism is incorporated inside the transfer unit 4. Have been. The slider 6 is connected to the transfer drive mechanism, and is connected to the pin portions 8A, 8A of the first holders 8, 8 slidably provided on the slider 6 with the pair of feed bars 7, 7, so that the feed bar 7 , 7 perform an advanced return movement. Further, the clamp units 5, 5 are fixed to the column 3 or the transfer unit 4, and slidably hold the feed bars 7, 7 by the second holders 9, 9 provided on the clamp units 5, 5. , And a structure that provides a clamp / unclamp operation.

As shown in FIGS. 1 to 3, a finger 12 and a work W of the finger 12 are provided on the feed bar 7.
A block 13 is provided on the side surface in the transport direction of the finger and constitutes a finger protection device 11. The block 13 is provided with a hole 13A penetrating from above, and the hole 13A has a spacer 1 having a dimension slightly longer than the thickness of the feed bar 7.
4 is fitted, and the block 13 is connected to the hole 7A of the feed bar 7 through the washer 15 provided on the upper surface of the block 13.
Is rotatably fastened to the feed bar 7 by a reamer bolt 16 and nuts 17, 17 fitted into the feed bar 7. In addition, a V-shaped groove 13B is provided on the lower surface of the block 13 in a straight line with the center of the hole 13A in which the spacer 14 is fitted, toward the clamping direction of the feed bar 7, and the feed bar 7 and the block 13 are fastened. The block 13 is positioned by being pressed by the ball 18A at the tip of a commercially available ball plunger 18 that is screwed into the screw hole 7B of the feed bar 7 provided at a position outside the hole 7A of the reamer bolt 16.

The finger 1 has a hole 1 penetrating from above.
2A is provided, and a spacer 19 for holding a specified torque equivalent to pressing the ball 18A of the ball plunger 18 into the groove 13B on the lower surface of the block 13 is fitted into the hole 12A and provided on the upper surface of the finger 12. It is fastened to the feed bar or the like by a reamer bolt 22 and nuts 23 so that it can rotate freely when a load of a specified torque or more is applied via the washer 21.

The finger 12 is moved in the return direction (counterclockwise) of the feed bar 7 to the finger 12 due to the inertia of the slide and the timing deviation from the slide stroke during press operation or emergency stop during mold matching. When a load equal to or more than the specified torque of the reamer bolt 22 to be fastened acts, the block 13 provided on the side surface of the finger 12 under the load of the finger 12 presses the ball 18A of the ball plunger 18 to be positioned by pressing the V-shaped groove 13B. Is removed from the groove 13B, and the feed bar 7 is
To prevent the finger 12 from being deformed or damaged. In addition, since the positioning can be easily restored by the groove 13B of the block 13 and the ball 18A of the ball plunger 18, much time and labor required for restoring the attachment of the finger 12 can be greatly reduced.

FIGS. 4 to 6 show a second embodiment of the present invention in which the function of the block 13 shown in FIGS. The configuration of the transfer feed 30 other than the finger protection device shown in FIG. 4 is the same as the configuration of the transfer feed 10 shown in FIG.

As shown in FIGS. 4 to 6, a finger 32 having a finger protection device 31 is provided on the feed bar 7.
Is provided. The feed bar 7 has fingers 32.
A hole 7C penetrating from above and a screw hole 7B provided at a position outside the position of the hole 7C in a straight line at the center of the hole. The finger 32 is provided with a hole 32A penetrating from above to be attached to the feed bar 7, and the lower surface of the finger 32 is formed in a V-shape toward the clamping direction of the feed bar 7 in line with the center of the hole 32A. A groove 32B is provided. The ball 18A at the tip of a commercially available ball plunger 18 screwed into the screw hole 7B of the feed bar 7 is pressed into the groove 32B, and the finger 32 is positioned. A spacer 19 for holding a specified torque equivalent to pressing the ball 18A of the ball plunger 18 into the groove 32B on the lower surface of the finger 32 is fitted into the hole 32A of the finger 32, and the washer 21 provided on the upper surface of the finger 32 is fitted. The finger 32 is fastened to the feed bar 7 by the reamer bolt 22 and the nuts 23, 23 so that the finger 32 becomes rotatable when a load equal to or more than the specified torque acts on the feed bar 7.

In the same manner as in the first embodiment, the finger 3 is displaced by the inertia of the slide and the timing deviation from the slide stroke at the time of press operation or emergency stop during mold matching.
2 in the return direction (counterclockwise) of the feed bar 7,
When a load greater than the specified torque of the reamer bolt 22 for fastening the finger 32 is applied, the V-shaped groove 32B of the finger 32 is formed.
The ball of the ball plunger 18, which is positioned by pressing the ball, is disengaged from the groove 32B and rotates in the advance direction of the feed bar 7 with the reamer bolt 22 as a fulcrum.
2 prevents deformation and breakage. Also, the groove 3 of the finger 32
Since the positioning can be easily restored by the ball 2A and the ball 18A of the ball plunger 18, much time and labor required for restoring the attachment of the finger 32 can be greatly reduced.

In this embodiment, the finger protection device 11 (31) is provided for the pair of feed bars 7, 7 of the transfer feed 10 (30), but the work is sequentially arranged by one transfer bar. It can also be applied to a transfer robot that transfers to a press working stage. Further, in the present embodiment, the operation of the feed bar 7 is two-dimensional operation of clamp / unclamp and advance return. However, the operation of the feed bar 7 may be three-dimensional operation of clamp / unclamp, advance return and lift down. Needless to say. Moreover,
In this embodiment, the finger 12 (32) is
The number of the reamer bolts 22 to be fastened is one, but is not limited thereto.

[0015]

As is apparent from the above description, according to the present invention, there is caused by the inertia of the slide at the time of the press operation or the emergency stop at the time of the mold alignment, the timing deviation from the slide stroke, and the like. In addition to preventing deformation and breakage of the finger, the V-shaped groove of the block and the ball of the ball plunger can easily restore the positioning, greatly reducing the time and labor required for restoring the finger installation. .

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a transfer feed according to a first embodiment of the present invention.

FIG. 2 is a side sectional view of a main part of the finger protection device.

FIG. 3 is a view taken in the direction of the arrow A in FIG.

FIG. 4 is an overall configuration diagram of a transfer feed according to a second embodiment of the present invention.

FIG. 5 is a side sectional view of a main part of the finger protection device.

6 is a view taken in the direction of arrow B in FIG. 2;

[Explanation of symbols]

1 is a press machine, 2 is a bed, 3 is a column, 4 is a transfer unit, 5 is a clamp unit, 6 is a slider, 7 is a feed bar, 7A and 7C are holes, 7B is a screw hole, 8 is a first holder, 8A Is a pin portion, 9 is a second holder,
10, 30 are transfer feeds, 11, 31 are finger protection devices, 12, 32 are fingers, 12A, 32A
Is a hole, 13 is a block, 13A is a hole, 13B is a groove, 1
4, 19 are spacers, 15, 21 are washers, 16, 2
2 is a reamer bolt, 17 and 23 are nuts, 18 is a ball plunger, 18A is a ball, and W is a work.

Claims (2)

[Claims] In a transfer feed for transferring a work to a press working stage in which work pieces are sequentially arranged by a feed bar, a) a finger and a side surface of the finger on the work transfer direction side directly or via a finger plate; And a block. B) The block is rotatably connected to a feed bar or a finger plate by a fulcrum pin. C) On the lower surface of the block, a V-shaped groove is provided in the direction of clamping of the feed bar, and the ball plunger is screwed into a screw hole provided at a position outside the fulcrum pin of the feed bar or the finger plate. The block is positioned by being pressed by the ball at the tip. D) The finger is fastened to the feed bar by fastening means with a specified torque equivalent to pressing the ball of the ball plunger into the groove on the lower surface of the block. A feed bar for a transfer feed, comprising the finger protection device configured as described above. 2. A transfer feed for transferring a work to a press working stage in which a work is sequentially arranged by a feed bar. A) The feed bar is provided with a finger having a finger protection device directly or via a finger plate. B) The finger is connected to the feed bar or the finger plate by a fulcrum pin having at least one fastening means so as to be rotatable. C) A V-shaped groove is provided on the lower surface of the finger in the direction of clamping the feed bar, and the tip of the ball plunger screwed into a screw hole provided at a position outside the fulcrum pin of the feed bar or the finger plate. The finger is positioned by being pressed by the ball. D) The finger is fastened to the feed bar by a fulcrum pin fastening means with a specified torque equivalent to pressing the ball of the ball plunger into the groove on the lower surface of the finger. A feed bar for a transfer feed, comprising the finger protection device configured as described above.