JPS5929778Y2 - Press pusher feed device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a pusher feed device that is a feeding device that pushes a blank horizontally and straight into a press die during press processing.

In the past, the press feed was generally fixed to the front side of the press bed.1 Therefore, it was difficult to replace the mold from the front, and it was done from the side.

However, changing molds from the side of the press is an extremely difficult task due to constraints on work space, and it takes a long time to set up, which is especially troublesome when changing molds frequently in high-mix, low-volume production. It was something that I felt acutely.

As a conventional technique for solving the above-mentioned problems, for example, the technique described in Japanese Patent Publication No. 14468/1983 is known.

According to this conventional technology, the workpiece loading device attached to the front of the press is made rotatable, and when changing molds, the loading device is stored near the press frame so that it does not get in the way of changing the molds. This is what I did.

However, in this conventional technique, the entire loading device must be rotated, so the rotating structure becomes large.

The assembled loading device is connected and driven by the press drive mechanism, but when turning, the power transmission system must be disconnected, and when reconnected, it must be connected at the same timing as when disconnected. The timing conditions were extremely difficult, and the timing adjustment device was complicated.

Furthermore, if a large loading device is attached to the front of the press, it will obstruct visual inspection of the inside of the mold during press processing.
This caused problems in workability.

Therefore, the present invention improves the above-mentioned drawbacks, allows the front side of the press bed to be opened, allows mold exchange to be performed simply and quickly by front operation, and also allows the front side of the press bed to be open even during press processing. It is an object of the present invention to provide a butcher feed device for a press with improved workability.

Therefore, the feature of the present invention is that the button feed device feeds the blank into the mold from the front side of the press in front of the mold, and the button feed device is fixed to one side of the press when viewed from the front side. The main body is provided with a movement mechanism that is interlocked with a press drive mechanism and reciprocates in the front and back direction, and a horizontal shape that is perpendicular to the reciprocating direction of the movement mechanism and directed toward the center of the press. A feed bar is connected to a movement mechanism, a button for feeding a blank is fixed to the tip of the feed bar, and a connection part between the movement mechanism and the feed bar has an attachment structure that allows the feed bar to be rotated and fixed in a horizontal plane. There is a point that is said to be.

In the drawings, 1 is a press, 2 is a bed of the press, 3.4 is an upper mold, a lower mold, 5 is a magazine; 6 is a buttonshaper that moves in the front and back direction on the bottom of the magazine 5 and feeds the lowest blank in the magazine 5 into the mold; I is a buttonsha feed body that drives the buttonshade 6; 8 is a feed bar that connects the bushing 6 and the bushing feed main body 7.

The buttonhole feed device of the present invention is mainly composed of the buttonhole 6, the buttonhole feed main body 7, and the feed bar 8.

The pusher feed main body 7 is fixed to one side of the bed 2 when viewed from the front of the press 1.

The main body 7 is provided with a movement mechanism that is interlocked with the crankshaft 9 of the press drive mechanism and reciprocates in the front and back direction.

This movement mechanism consists of two parallel reciprocating shafts 10 and 11, upper and lower.
has.

The reciprocating shaft 10.11 is installed between the front and rear facing walls 13, 14 on the frame 12 of the bushing feed main body 7 with respective bearings 15 so as to be slidable in the front and rear direction.

The front ends of the two reciprocating shafts 10 and 11 protruding from the front wall 13 are integrally connected by a bushing head 16.

A spring hook 17 inside the bushing head 16 and a spring holder 1 fixed to the frame rear wall 14 in a rearwardly projecting manner.
A tension spring 20 is stretched between the tension bolt 19 in the bushing head 8 and the bushing head 16 is always tensioned in the backward direction by this spring 20.

A rear head 2 is located halfway on the reciprocating shafts 10 and 11.
1 are integrally connected, and a roller follower 22 is attached to the rear head 21.

The rear head 21 has a hole 23 that passes through the tension link 20.

A drive shaft 24 is located at a position corresponding to the lower part of the reciprocating shaft 11 on the frame 12 of the housing feed main body 7.
is supported via a bearing 25 in a direction perpendicular to the reciprocating axis 10.11.

A feed arm 26 is integrally connected to the end of the drive shaft 24, and a first bushing lever 27 is mounted on the drive shaft 24.
is fixed to correspond to the lower part of the reciprocating shaft 11.

Furthermore, on this drive shaft 24, a Ug2 bushing lever 28 is parallel to the first bushing lever 27 and is freely rotatably supported therethrough.

A connecting bolt support shaft 29 is freely rotatably supported in parallel with the drive shaft 24 at the rear end 28a of the second bushing lever 28, which projects downward from the main body 7. It penetrates through.

One end 30a of the connecting bolt 30 protruding from the connecting bolt support shaft 29 is engaged with a groove 31 of the fork-shaped tip 27a of the first bushing lever 27, and a hunt lub 32 is screwed into the other end 30b. be.

- By tightening the gripper 32, the first bushing lever 27 and the second bushing lever 28 are connected.

A detection arm 33 is attached to the second bushing lever 28 with a pivot 34 so as to face the tip 28b of the second bushing lever 28.
The roller follower '7-22 of the rear head 21 is engaged between the detection arm 33 and the detection arm 33.

The state of contact between the tip end 28b of the second pusher lever 28 and the circumferential surface of the roller follower 22 is determined by the contact between the second pusher lever 28 and the detection arm 33.
A spring 3 is stretched between the two so that they are close to each other.
It is held by a tension of 5.

Wait, second pussy? A detection limit switch 36 wired to the press emergency stop circuit is installed between the L/bar 28 and the detection arm 33.

The Ford arm 26 is connected to an eccentric ring 37 at the end of the crankshaft 9 of the press 1 through a crank rod 38.

The feed bar 8 has a handle 39 for tightening the feed bar at the tip end 8a, and a handle 40 for tightening the feed bar at the rear end 8b.
Each of them has the following.

The rear end 8b of this feed bar 8 is joined to the upper end surface 16a of the pusher head 16 in the front side of the bed 2 of the press 1 in the left-right lateral direction, that is, in the direction that should be orthogonal to the pusher feed body 1. The portion is fixed by tightening the feed bar tightening knob 40.

Also, between the joint surfaces of the rear end portion 8b of the feed bar 80 and the upper end surface 16a of the bushing head 16, the feed bar tightening handle 4 on the rear end portion Bb of the feed bar 80
By providing four holes 41 on each side of the feed bar 8 and by engaging a pair of pins 42° 42 installed diagonally on the upper end surface 16a of the feed bar 8 into the pin holes 41, 41, It is perpendicular to the Shafied body I.

The pusher 6 has a ■-shaped notch 43 at its tip, and the tip of the feed bar 8 is arranged so that the end faces the bottom of the magazine 5 and is parallel to the front and back direction of the press 1, that is, the direction parallel to the pusher feed body 7. 8a at right angles, and this joint is fixed by tightening the knob and the handle 39.

The pusher feed configured in this manner operates as follows.

The drive shaft 24 in the pusher feed body I is connected to the eccentric wheel 37 of the press 1, the crank ring 38, and the feed arm 2.
6.

11th button lever 27 and 2nd button lever 28
performs a swinging motion by a drive shaft 24.

Since the bushing head 16 is connected to the reciprocating shafts 10 and 11 and the rear head 21, the bushing head 16 simultaneously moves back and forth in the front and back directions of the press in conjunction with the rocking movement of the second bushing lever 28.

To feed the blanks in the magazine 5 into the mold, the button head 16 is moved back by the tension spring 20.
At the same time, the bushing 6 is moved toward the mold via the feed bar 8, so that it is fed into the mold.

The bushing 6 is extracted from the magazine 5 by mechanically applying a forward motion to the bushing head 16 by the second bushing lever 28, thereby moving the bushing head 16 in the drawing direction from the magazine 5 via the feed bar 8.

If an overload occurs due to a deformed blank or the like during blank feeding, only the first bushing lever 27 connected to the feed arm 26 returns to its original position, and the bushing head 16, rear head 21, and second bushing lever 28 , stops when overload occurs.

As a result, the roller follower 22 attached to the rear head 21 separates the detection arm 33 and the detection limit switch 36 on the second bushing lever 28, thereby issuing an emergency stop signal and causing the press 1 to come to an emergency stop.

When operating the press 1 alone, after retracting the button head 16 to its original position, loosen the hunt knob 32 on the rear end 28a of the second button lever 280, and
The end 30a of the connecting bolt 30 is removed from the groove 31 of the fork tip 27a of the bushing lever 27, and the connection between the first bushing lever 27 and the second -y'' bushing lever 28 is separated.

After this separation, the -.
Let it hang straight down as shown.

When the first bushier lever 27 and the second bushier lever 28 are disconnected, the eleventh bushier lever 27 swings due to the press operation, but the second bushier lever 28 remains stationary.

If you are not using the bushing 6, tighten the feed bar.
Loosen the handle 40 and move the feed bar 8 to the pusher head 1.
Release the engagement with the pin 42 from the upper end surface 16a of 6, lift it up with 1, and rotate it 90 degrees in the X direction or 27 degrees in the Y direction in FIG.
The 0 degree paper rotation pusher is placed in the upper part of the feed main body 7 in parallel thereto, and the tightening handle 40 is tightened again to fix it.

The reciprocating motion of the reciprocating shafts 10.11 is driven in conjunction with the crankshaft 9 of the press 1, but in this case, the structure of the transmission mechanism between the crankshaft 9 and the reciprocating shafts 10.11 is as follows. It is not limited to the above embodiments.

According to the present invention, the following effects are achieved.

■ Since the button feed main body 7 of the button feed device is not provided on the front of the press but on the side thereof, it does not get in the way of monitoring the inside of the mold during press processing, and therefore, Pressing work becomes easier.

■ Since the pusher feed main body 7 is located on the side of the press, when replacing the mold, only the feed bar 8 needs to be rotated to open the front of the press, and this operation can be done by rotating the entire device as in the past. It's extremely simple compared to what you can do.

■ The press feed main body 7 is fixed to the side of the press.
t, the power connection and disconnection between the press drive mechanism and the movement mechanism can be performed with an extremely simple structure, and the synchronization at the time of connection and disconnection is also simpler than when the entire device is rotated.

[Brief explanation of the drawing]

Figure 1 is a side view of the entire proposed device, Figure 2 is a front view, and Figure 3 is a side view of the entire proposed device.
The figure is a partially enlarged plan view of the same device, FIG. 4 is a partially enlarged front view of the same device, FIG. 5 is a plan view of the button feed main body of the same device, and FIG. FIG. 7 is a partially cutaway side view of the main body. 1...press, 6...butsusha,'+
o, ii...Reciprocating axis, 8...Feed bar.

Claims (1)

[Scope of utility model registration request] In a button feed device that feeds a blank into a mold from the front side of the press in front of the mold, the button feed device has a button feed main body fixed to one side when viewed from the front side of the press. is provided with a movement mechanism that is interlocked and connected to a press drive mechanism and reciprocates in the front and back direction, and a horizontal feed bar that is orthogonal to the reciprocating direction of the movement mechanism and faces toward the center of the press is connected to the movement mechanism. A button for feeding the blank is fixed to the tip of the feed bar, and a connecting portion between the movement mechanism and the feed bar has a mounting structure that allows the feed bar to be rotated and fixed in a horizontal plane. Press button feeding device.