JPS6040939B2 - Intermittent feed device for transfer press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an intermittent feeding device for a transfer press.

There are various types of conventional intermittent feeding devices of this kind, such as cams and planetary gear mechanisms, but all of them have the problem of being complicated, expensive, and unable to provide smooth feeding.

The present invention aims to provide an intermittent feeding device for a transfer press that solves the above problems.

The configuration will be explained below based on the embodiment shown in the drawings.

In the figure, 1 is a drive shaft that is rotationally driven by the power of the press machine, 2 is an eccentric pin provided at an eccentric position of this drive shaft 1, and 3
is a slide punch connected to this eccentric pin 2 via a connecting rod 4, and a rack 5 is provided on this slide punch.

Reference numeral 6 denotes a rotating shaft provided on the side facing the rack 5. A pinion 5a that meshes with the rack 5 is fixed to the rotating shaft 6, and the reciprocating motion of the rack 5 causes the rotating shaft 6 to rotate at a rotation angle of 180 degrees or more. It is designed to oscillate over the entire length.

A swing lever 8 having a cam follower 7 at its tip is fixed to the rotating shaft 6. Reference numeral 9 denotes a carrier provided movably in the swinging direction of the swinging lever 8. The cam follower 7 of the swinging lever 8 is rollingly engaged with the carrier 9, and a guide having a groove with one side open. 10 is provided with its groove oriented in a direction perpendicular to the moving direction of the carrier 9.

The opening entrance of the groove is located 4 degrees beyond the rotational angle of the swing lever 8 and on a line connecting the start and end of the 180° swing (FIG. 4A). Further, the other side of the groove is disposed with the other side facing away from the swinging fulcrum of the swinging lever 8. Carrier 9 is designed to be locked if both ends of its reciprocating motion are false. An example of this positioning lock mechanism is shown in the third example.
As shown in the figure. A recess 11 is provided on the lower surface of the carrier 9, into which a roller 13 pushed up by a spring 12 on the fixed side fits into the reciprocating laying end position and is positioned and fixed. In the above configuration, as the rack 5 reciprocates, the swinging lever 8 swings over a rotation angle of 180 degrees or more, but only when the swing lever 8 is rotated 180 degrees, the guide shaft of the carrier 9 is engaged. By swinging the swinging lever 8, the carrier 9 is reciprocated through the guide 10 over a stroke twice as long as the lever length of the swinging lever 8.

Both end positions of this reciprocating movement are locked by the above-mentioned positioning lock mechanism. A to E in FIG. 4 show the self-operating states, and in states A, B, D, and E, the carrier 9 is in a fixed state, and B shows the start of feeding and D shows the end of feeding.

Further, C indicates a state in the middle of sending. In the above embodiment, guide 1
Although the example in which the engagement range 1800 with respect to the cam follower 7 of 0 corresponds to the rotation angle (Q+B) of the drive shaft 1 is shown, the rotation angle (Q18) of the drive shaft 1 can be changed arbitrarily by changing the gear of the pinion 5a. Can be set.

The present invention is as described above, and the swinging lever 8 having the cam follower 7 at the tip is provided so as to be swingable over a predetermined angle and connected to a swinging drive source, and the swinging lever 8 is provided in a swinging direction. A movable carrier 9 is provided, and a guide 10 having a groove in which the cam follower 7 of the swinging lever 8 is engaged in a rolling manner and one side of which is open is provided on the carrier 9.
The groove of this guide is provided in a direction perpendicular to the moving direction of the carrier 9, and the open entrance of the groove of this guide 10 is set at the starting and ending points of the swinging lever 8 when the swinging lever 8 swings 180 degrees in the moving direction of the carrier 9. The groove side part of the groove is arranged in a direction away from the swinging fulcrum of the swinging lever 8, and the carrier 9 can be freely engaged with and detached from the carrier 9 at both terminal positions of the reciprocating path of the carrier 9. Since the intermittent feed device for the transfer press is configured by providing the engaging positioning lock mechanism on the fixed side, it can be obtained with an extremely simple structure and at low cost, and the swing angle is smaller than the swing angle of the swing lever 8, and the rotation angle is 180°.
Since the cam follower 7 engages with the guide 10 only over the range of , the cam follower 7 is disengaged from the guide 10 at the end of the feed of the carrier 9, allowing smooth feeding of the carrier 9.

Further, according to the present invention, as described above, since the cam follower 7 is disengaged from the guide 10 at the end of the feed of the carrier 9, the carrier 9 does not move even if the swing lever 8 moves excessively.
Since the carrier 9 is completely stopped, and the carrier 9 is positioned and fixed at this stop position by the positioning lock mechanism, the carrier 9 is completely stopped without moving for a predetermined period of time, and the workpiece is not clamped or unloaded during this period. Clamps, etc. can be operated accurately.

[Brief explanation of drawings]

The drawings show the main parts of the embodiment of the present invention, and FIG. 1 is a partially cutaway plan view, FIG. 2 is a sectional side view, and FIG. 3 is an example of a carrier positioning and locking mechanism. The sectional views and FIGS. 4A to 4E are explanatory diagrams of the operation. 7 is the cam follower, 8 is the rocking lever, 9 is the carrier, 1
0 is a guide. Figure 2 Figure 1 Figure 3 Figure 4

Claims (1)

[Claims] 1 A swinging lever 8 having a cam follower 7 at its tip is provided so as to be swingable over a predetermined angle and connected to a swinging drive source, and is movable in the swinging direction of the swinging lever 8 to provide a carrier 9. The cam follower 7 of the rocking lever 8 is rollingly engaged with the carrier 9, and a guide 10 having a groove with one side open is provided with the groove oriented in a direction perpendicular to the direction of movement of the carrier 9. At the same time, the opening entrance of the groove of this guide 10 is located on the line connecting the start and end of the swing when the swing lever 8 swings 180° in the moving direction of the carrier 9, and the other side of the groove is A positioning lock mechanism is provided on the fixed side, which is arranged in a direction away from the swinging fulcrum of the movable lever 8, and which releasably engages the carrier 9 at both terminal positions of the reciprocating motion of the carrier 9. Features: Intermittent feed device for transfer press.