JPS6056571B2 - transfer feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transfer feeder used in a press machine.

Various types of transfer feeders have been provided in the past, but all of them have a problem in that they are large in the clamping direction, reducing the space for arranging molds such as cam stands and guide posts.

The present invention has been developed in consideration of the above, and provides a transfer feeder whose dimensions in the clamping direction can be made extremely small, thereby making it possible to fully utilize the remaining space for arranging molds such as cam stands and guide posts. This is what we are trying to provide.

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

In the figure, 1 is a press machine to which the transfer feeder 2 according to the present invention is applied, 3 is a bolster, and 4 is a slide.

The transfer feeder 2 is located below the slide 4,
Both ends thereof are supported slidably in the left and right direction relative to the machine frame 5. Figure 2 and below are the above transfer feeder 2.
6a, 6b are a pair of front and rear feed bars, and each feed bar 6a, 6b is a pair of vertically spaced plates 6a, 6a2, 6b.
, , 6b, and so on.

Both ends of the feed bars 6a, 6b are fixed to left and right carriers 9, 10 which are slidably engaged with guides 7, 8. One of the carriers, for example the left carrier 9, is connected to the cam lever 1 via a coupling device 11.
The cam lever 12 is connected to the cam lever 12, and the swing of the cam lever 12 causes the cam lever 12 to reciprocate in the lateral direction with a predetermined stroke.
A cam follower 13 is provided at an intermediate portion of the cam lever 12, and this is in rolling contact with a feed cam 14.

Further, this cam lever 12 is configured such that a cam follower 13 of the cam lever 12 is brought into pressure contact with a feed cam 14 by an air cylinder 15. The feed cam 14 is the breath machine 1
Power is transmitted from the drive shaft through a bevel gear box, a universal joint 16, and a rod 17. The connecting device 11 includes a connecting rod 20 connected to the cam lever 12 and a connector 2 connected to the carrier 9.
1, and this connector 21 is designed to be disconnected when a predetermined load or more is applied in the feed direction of the transfer feeder 2.

That is, the connector 21 is slidably fitted into the support base 22 of the carrier 9, and the locking piece 24 is biased by a spring 25 and engages with a notch 23 provided on the side surface of the connector 21. The connector 21 and the carrier 9 are connected by a locking piece 24.

The locking piece 24 is disengaged against a spring 25 when a predetermined load or more is applied to the connector 21 in the feed direction. A pair of feed pars 6a, 6b
Fingers 2 facing each other between the respective plates of
A plurality of sets of 6a and 26b are provided.

Each finger 26a, 26b is rotatably supported by a shaft 27, and a spring 29 supported by a spring receiver 28.
is biased in the clamping direction. Further, the positions of the clamp ends of the fingers 26a, 26b can be adjusted by a stopper 30 and a shim 50. The spring receiver 28 and stopper 30 are fixed to the feeders 6a and 6b. Brackets 31a, 31b are fixed to each finger 26a, 26b facing each other in the front and back. Cam followers 32, 32 are attached to each bracket 31a, 31b at opposing positions.

Above the pair of feed pars 6a, 6b. A pair of beams 33a, 33b for opening and closing fingers is arranged in the front and rear at positions facing the side surfaces of the cam followers 32, 32, extending from one end of the press room to the other end. Block 34a in 2 places
, 34b are fixed, and these blocks 34a, 34b
are fitted into brackets 35a and 35b erected on the machine frame side so as to be slidable in the front-rear direction and biased in opposite directions by a spring 36.

Both blocks 34a and 34b have cam followers 37,
37 are provided facing each other. Numerals 38a and 38b are a pair of front and rear slide cams fixed to the slide 4, and are provided at both ends of the press room corresponding to the cam followers 37 and 37 of the beams 33a and 33b.

The slide cams 378a, 38b are tapered at their lower ends, and by moving downward, the cam followers 37, 37 are moved along the slide cam curves, thereby causing the beams 33a, 33b to move against the spring 36. It is becoming possible to push it further. In the above configuration, the press machine 1
When the feed cam 14 is rotated by the power transmitted from the drive take-out shaft through the bevel gear box, universal joint 16, and rod 17, the cam lever 12 swings, causing the pair of feed pars 6a and 6b to move back and forth to the left and right. Ru.

On the other hand, when the slide 4 moves downward and the slide cams 38a and 38b spread out the cam followers 37 and 37, the beam 33a
, 33b are expanded at the same time, and the cam followers 32, 32 of the fingers 26a, 26b facing the end surfaces of the beams 33a, 33b are expanded outward, and the fingers 26a, 26 are expanded simultaneously.
b is unclamped.

The reciprocating motion of the feed pars 6a, 6b and the operation of the fingers 26a, 26b by the slide 4 are synchronized, and when the feed pars 6a, 6b advances, the fingers 26a, 26b are in a state of clamping the workpiece 39, and the advance ends. After that, the slide 4 moves down and the finger 26a
, 26b are unclamped and simultaneously the workpiece 39 is pressed.

Then, while the slide 4 is in the lowering state, the feed pars 6a, 6b are returned with the fingers 26a, 26b in an unclamped state. Then, when the slide 4 rises, the slide cams 38a and 38b are separated from the cam followers 37 and 37, and the beams 33a and 33b are closed by the spring 36, and the fingers 26a and 26b that were in contact with the end surfaces of the beams 33a and 33b are closed. Naturally, the cam followers 32, 32 also move inward, and the fingers 26a, 26b are in a clamped state. This is repeated below. Note that in the above-mentioned clamped state, the beams 33a, 33b and the cam follower 32
, 32, a constant gap is maintained between the beams 33a, 33b and the cam followers 32, 32 during feed advancement.

The present invention is as described above, and includes a pair of feed pars 6a, 6 that reciprocate with power from the drive shaft of the press machine 1.
b, and are located above each of the feed pars 6a and 6b, and are provided across from one end of the press room to the other end, and are clamped in opposite directions, and are spring-biased in the clamping direction. A pair of finger opening/closing beams 33a, 3 provided separately from the feed pars 6a, 6b.
3b and the feed pars 6a, 6b in a direction opposite to each other and are spring-biased in the clamping direction, and furthermore, when the beams 33a, 33b move in the unclamping direction, they come into contact with the feeders 33a, 33b via the cam follower 32. The fingers 26a and 26b are fixed to the slides 4 of the press machine at both ends of the press room, and the downward movement of the slides 4 opens and closes the pair of fingers 33a and 33b. Since the transfer feeder is constituted by the slide cams 38a and 38b that are pushed apart in the unclamping direction, the beams 33a and 33b for opening and closing the fingers 26a and 26b are positioned above the feed pars 6a and 6b. Therefore, the dimensions in the clamping direction can be made extremely small, and the remaining space can be fully utilized for installing molds such as cam bases and guide posts. Also, the beam 3 for opening and closing the fingers
Since the feed pars 3a and 33b are separate from the feed pars 6a and 6b, advance and return operations only need to be driven by the feed pars 6a and 6b including the fingers 26a and 26b. Weight can be reduced and speed can be increased. Further, according to the present invention, advance and return operations in the press room are performed only by the feed pars 6a, 6b and the fingers 26a, 26b, and there is no need to move the carrier 9, so the die height amount can be reduced. Further, according to the present invention, beams 33a and 33b for opening and closing the fingers 26a and 26b are provided extending from one end of the press room to the other end, and the beams 33a and 33b are provided to unclamp the fingers 26a and 26b.
6b are in contact with each other, all the fingers 26a and 26b can be clamped and unclamped by the pair of finger opening/closing beams 33a and 33b, and this function is achieved with a simple configuration. be able to. Also, clamp the fingers 26a and 26b.
The structure for unclamping is all located above the mold, and by having the above structure, there is no need to change the shape of the mold, etc., and a normal mold can be used. Also, the pair of fingers opening/closing beam 33a,
Slide cam 3 that pushes out 33b in the unclamping direction
By locating 8a and 38b at both ends of the press room, there is no need to provide a slide cam or rocker plate inside the press room, and it becomes easy to install a cam stand or a guide post inside the press room. Furthermore, when clamping and unclamping the feedper, the cam follower 32 simply rolls on the side surfaces of the beams 33a and 33b for opening and closing the fingers, so there is less wear and the feedper 6a,
6b can be moved smoothly.

[Brief explanation of drawings]

Fig. 1 is a front view of a press machine using the transfer feeder according to the present invention, Fig. 2 is a plan view showing the sliding drive section of the transfer feeder, and Fig. 3 is taken along line 1 and 2 in Fig. 2. A sectional view, FIG. 4 is a plan view with the sliding drive section removed,
FIG. 5 is a sectional front view thereof, FIG. 6 is a sectional side view, FIG. 7 is a plan view showing the main part of the finger portion cut away, and FIG. 8 is a side view showing the main part cut away. 1 is a breath machine, 4 is a slide, 6a and 6b are feeders, 26a and 26b are fingers, 32 and 37 are cam followers, 33a and 33b are beams, and 38a and 38b are slide cams.

Claims (1)

[Claims] 1 A pair of feed bars 6a, 6b that reciprocate with power from the drive shaft of the press machine 1, and a pair of feed bars 6a, 6b located above each of the feed bars 6a, 6b and provided across from one end of the press room to the other end. A pair of finger opening/closing beams 33a, 33b, which are provided separately from the feed bars 6a, 6b, are provided separately from the feed bars 6a, 6b, and are clamped in opposite directions, and are biased by a spring in the clamping direction. Fingers 2 are movable in opposite directions and biased by a spring in the clamping direction, and further, when the beams 33a and 33b move in the unclamping direction, they come into contact with the beams 33a and 33b via the cam follower 32 to perform an unclamping operation.
6a, 26b, and beams 33a, 3 that are located at both ends of the press room and are fixed to the slide 4 of the press machine, and are used to open and close the pair of fingers by the downward movement of the slide 4.
Slide cam 38 that pushes 3b apart in the unclamping direction
A transfer feeder comprising: a and 38b.