JPH0730181Y2 - Transfer feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a transfer feeder having an improved connection structure between a transfer bar and a feed carrier.

[Conventional technology]

A transfer feeder conventionally provided in a transfer press has a pair of transfer bars arranged in parallel in the work transfer direction.

Further, a cross bar having a work holding means is horizontally mounted between these transfer bars, and the transfer bar is operated in two-dimensional directions of a feed direction and a lift direction, thereby transferring the work to each processing station of the transfer press. There is also proposed a transfer feeder for loading and unloading workpieces.

The transfer feeder in which the transfer bar operates two-dimensionally has a feed carrier a as shown in FIG. 3 which is reciprocally moved in the feed direction by a feed lever rocked by a cam.

A guide post b is erected on the upper surface of the feed carrier a, and a through hole d opened at one end side of the transfer bar c is fitted to the guide post b, and the transfer bar moves as the feed carrier a moves. When c is driven in the feed direction, and the transfer bar c is driven in the lift direction, the transfer bar c is slid along the guide post b.

[Problems to be solved by the device]

However, in the above-mentioned conventional transfer feeder, the diameter of the through hole d is increased due to the friction between the guide post b and the transfer bar c during long-time use, and the diameter of the through hole d is increased, which causes noise and vibration. There was a problem that became.

Further, as the lift stroke of the transfer bar c increases, the guide post b also lengthens, and when the transfer bar c is driven on the tip side of the guide post b, the guide post b swings as shown in FIG. Since the operation of c becomes unstable, the guide post b having a large rigidity is required, and as a result, the weight becomes heavy and a large driving force is required to drive the far carrier a, which is also a problem.

The present invention has been made for the purpose of improving the above problems, and an object of the present invention is to provide a transfer feeder capable of driving a transfer bar without using a guide post.

[Means and Actions for Solving the Problems]

In order to achieve the above-mentioned object, this invention moves a pair of transfer bars arranged in parallel in the feed direction in a two-dimensional direction and uses a work holding means provided on a cross bar horizontally installed between the transfer bars. In a transfer feeder that conveys a work to each processing station, both ends of a connecting rod are pivotally attached to a feed carrier reciprocally moved in a feed direction by a feed lever and the transfer bar, and the connecting rods are connected between them. Both ends of the link are pivotally attached to the upper end of the feed carrier and the upper end of the feed lever, and the links between them are connected by a link. The connecting rod connects the vertical movement of the transfer bar and the height of the upper end of the feed lever due to the circular movement of the feed lever. Since the link absorbs the difference, the transfer lever is supported by the feed lever with a simple structure. It becomes possible to drive the over de direction.

〔Example〕

An embodiment of the present invention will be described in detail with reference to the drawings. In the drawing, reference numeral 1 is a press body, and a mold 3 is placed on a bolster 2 provided on a bed 1a for each processing station.

Reference numeral 4 denotes a pair of lift beams arranged side by side in the feed direction A, both ends of which are supported by a lift mechanism 5 and are vertically movable by the lift mechanism 5.

Guide rails 6 are laid on the lift beam 4 along the feed A, and a plurality of carriers 8 connected by transfer bars 7 are movably provided on the guide rails 6.

Each of the carriers 8 is provided with a guide roller 9 at the lower part thereof, and is movable in the feed direction A along the guide rail 6 by the guide rollers 9, and a tilt mechanism 10 is provided on each carrier 8. Has been.

A cross bar 11 is horizontally installed between the tilt mechanisms 10 facing each other, and a work holding means (not shown) such as a vacuum cup for adsorbing a work to these cross bars 11 is provided.
Is installed.

On the other hand, a cam box 12 is provided on the downstream side in the feed direction A, and a feed cam 13 and a lift cam 14 that are rotated by the power taken out from the press body 1 are provided in the cam box 12.

A feed lever 15 and a lift lever 16 pivotally supported on the downstream side are circumferentially contacted with the cams 13 and 14, and the cams 13 and 1
The upper end of the lift lever 16 is swingable around the fulcrum with the rotation of 4, and the upper end of the lift lever 16 is interlocked with the lift mechanism 5 via the lift rod 17,
With the swing of 16, the lift beam 4 is moved up and down via the lift mechanism 5.

The upper end of the feed lever 15 is connected to the feed carrier 20 via a link 19. The feed carrier 20 is a guide rail 22 laid on the cam box 12.
Is supported via rollers 23 on the feed lever 15
It is movable in the feed direction A along the guide rail 22 with the swing of the feed carrier 20.
One end of a connecting rod 24 is pivotally attached to the end of the connecting rod 24 via a pin 23a.

The other end of the connecting rod 24 is pivotally attached via a pin 25 to the carrier 8 located on the most downstream side among the carriers 8 connected by the transfer bar 7.

Next, the operation will be explained. In synchronization with the operation of the press body 1, the transfer bar 7 is operated in the two-dimensional directions, that is, the feed direction and the lift direction, and the work holding means provided on the crossbar 11 adsorbs the work. When the feed cam 13 swings the feed lever 15, the feed carrier 20 is moved along the guide rail 22.

Since the feed carrier 20 and the transfer bar 7 are connected via a connecting rod 24,
With the movement of 20, the transfer bar 7 is moved in the feed direction A to convey the work, and the transfer bar 7 ascends together with the lift beam 4 during the lift operation, but the transfer bar 7 and the feed carrier 20 are connected to each other by a connecting rod. There is no problem because they are connected by 24.

Further, the lift operation causes an error in the movement in the feed direction A, and the feed cam corrects this error.

[Effect of device]

As described in detail above, the present invention separates the transfer bar and the feed carrier and connects them by the connecting rod. Therefore, the guide post is erected on the conventional feed carrier and the guide post is installed. Compared to driving the transfer bar via a slide bar, the guide post and the transfer bar do not slide, so noise and vibration due to backlash due to wear of the sliding parts can be reduced, and positioning accuracy during transfer is also improved. To do.

Further, since the weight of the feed carrier can be reduced because the guide posts are unnecessary, it is possible to easily cope with the increase in speed and reduce the cost. Further, when the feed lever makes a circular motion about the pivot, even if a height difference occurs at the tip of the feed lever, the link absorbs the height difference, so that the feed carrier can be driven in the feed direction with a simple structure. Become.

[Brief description of drawings]

FIG. 1 is a block diagram of a transfer feeder according to an embodiment of the present invention, FIG. 2 is a perspective view of the main part of the same, FIG. 3 and FIG.
The figure is a conventional explanatory view. 4 is a lift beam, 5 is a lift mechanism, 7 is a transfer bar, 11 is a crossbar, 15 is a feed lever, 20 is a feed carrier, 24 is a connecting rod, and A is a feed direction.

Claims (2)

[Scope of utility model registration request] 1. A pair of transfer bars 7 arranged side by side in the feed direction A are moved in a two-dimensional direction, and each processing is carried out by a work holding means provided on a crossbar 11 which is laterally stretched between the transfer bars 7. In a transfer feeder that conveys a work to a station, a feed carrier 20 reciprocally moved in a feed direction A by a feed lever 15.
And both ends of the connecting rod 24 are pivotally attached to the transfer bar 7, and the connecting rods 24 are connected between them, and both ends of the link 19 are pivotally attached to the upper ends of the feed carrier 20 and the feed lever 15. , A transfer feeder formed by connecting these with a link 19. 2. The transfer feeder according to claim 1, wherein a transfer bar 7 is movably supported in a feed direction A on a lift beam 4 which is vertically moved by a lift mechanism 5.