JPS5927969Y2 - Press table moving pin - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a moving pin for a press table.

Moving the press table of a large press with a capacity of 4,000 tons or more requires a great amount of movement force, and the distance it moves is relatively long. This is done by connecting the press table to a moving tension bar several times with moving pins.

Conventionally, the moving pin inserted into the press table was manually engaged and disengaged from the tension bar, but the heavy weight of the moving pin and the high temperature of the work environment hindered press work efficiency. was.

The present invention uses power to detach the press table moving pin from the tension bar, thereby making it possible to automate this process.

First, a conventional example will be explained based on FIGS. 1 to 3.

Reference numeral 1 denotes a press table, which is slidably placed on the lower frame 2.

A groove 2a extending in the feeding direction of the press table 1 is provided approximately at the center of the lower frame 2, and a tension bar 3 is inserted into the groove 2a with a gap provided between it and the press table 1.

Tension bar feed cylinders 4, 4', which have the same stroke length S and stroke in opposite directions, are fixed to both ends of the lower frame 2 in the feed direction of the press table 1, and the tips of both rams 4a, 4'a are fixed to both ends of the tension bar 3.

Further, insertion holes 1a and lb for moving pins 5 and 5' for connecting the tension bar 3 and the press table 1 are provided at both ends of the press table 1.

The length of the tension bar 3 is equal to the length of the press table 1 at least three times the stroke length S of the tension bar feed cylinder 4, with a slight margin. In the inactive state of 4 a and 4'a,
Insertion holes 1 for the moving pins 5, 5' of the press table 1
There are pin holes 3a and 3'a that match the positions a and lb, and pin holes 3b and 3'b that are outward by a stroke length S from these holes.

Here, as shown in FIG. 2, the operation of moving the press table 1 located at the center of the press by 2S to the left in the figure will be specifically explained.

As shown in FIG. 4, the head of the conventional moving pin 5' is provided with handles 5'a, 5'a facing each other, for example.
Engage the tip of the manual lever 15 with the handles 5'a, 5'a,
With one moving pin 5' lifted and removed from the pin hole 3'a of the tension bar 3, the ram 4a is stroked back and the ram 4/a is stroked forward, and the tension bar 3 is moved as shown in the diagram. When the tension bar 3 is moved by a stroke length S to the right, the pin hole 3a of the tension bar 3 is located below the other moving pin 5, and the moving pin 5 falls under its own weight and is inserted.

Next, the ram 4a is stroked forward, the ram 4'a is stroked back, and the tension bar 3 is adjusted to the stroke length S.
If you move the press table 1 to the left (as shown in the diagram)
will move in the same way.

Next, the moving pin 5 is lifted and removed from the bottle hole 3a, and the side rams 4a and 4'a are operated again to move only the tension bar 3 to the right in the figure by a stroke length S. The moving pin 5 is engaged with the bottle hole 3b.

Next, when both rams 4a and 4'a are operated, the tension bar 3, together with the press table 1, moves to the left in the figure by a stroke length of 3 minutes, resulting in a total movement of 2S. .

The press table 1 is moved by the above operations, and as described above, the pin holes 3a, 3b, 3'a of the tension bar 3 of the moving pins 5, 5'.

The separation from 3'b is done manually, red-hot material is placed on the press table 1, the working environment is high temperature, and the weight of the moving pins 5, 5' is 150.
It is heavy, weighing between 300 kg and 300 kg, making moving the press table 1 difficult and time consuming.

In order to eliminate the above-mentioned drawbacks, the present invention attempts to make the moving pin a hollow body and incorporate a cylinder as an actuator inside the moving pin to motorize the movement of the moving pin from the tension bar. .

An embodiment of the moving pin of the press table according to the present invention will be described with reference to FIGS. 5 and 6.

1 is a press table, 2 is a lower frame, 3 is a tension bar, and 6 is a moving pin.

- As an example, the moving pin 6 is inserted into the moving pin insertion hole 1a of the press table 1 and the bottle hole 3a of the tension bar 3.

The moving pin 6 is connected to the press table 1 and the tension bar 3.
It is made of a cylindrical body with a length that almost matches the sum of the thicknesses of
has.

A diametrical notch 6b is provided at the collar 6a and the upper end.
, 6b are formed, and both ends of a bordering beam 7 are inserted into the notches 6b, 6b portions, and are provided to straddle the insertion hole 1a of the moving pin of the press table 1.

The lifting beam 7 is connected to a clevis 9 welded to a lid 8a of a cylinder 8 for operating the moving pin housed in the moving pin 6, and a piston rod of a piston 8b that fits into the cylinder 8. The tip of 8C is fixed to the bottom of the moving pin 6 made of a cylindrical body.

Reference numeral 11 denotes a working medium supply/discharge pipe for compressed air, pressure oil, etc. from the outside, and is connected to a supply/discharge port 8d provided at the bottom of the cylinder 8.

Incidentally, the lifting beam 7 may be installed to straddle the insertion hole 1a of the moving pin of the press table 1, and the cylinder B may be suspended from the moving pin 6. Therefore, the lid 8 of the cylinder 8
The attachment to a is not limited to the clevis 9, but also the collar 6a of the moving pin 6 and the notches 6b, 6b.
is not necessarily required; when the piston 8b is not in operation, the lower end of the moving pin 6 is fully engaged with the pin hole 3a of the tension bar 3, and when the piston 8a is in operation, the lower end of the moving pin 6 is in tension. It is sufficient that the moving pin 6 does not come out of the bottle hole 3a of the bar 3 and the upper end surface of the moving pin 6 comes into contact with the lower surface of the lifting beam 7.

Since the moving pin 6 of the press table 1 according to the present invention is configured as described above, when the moving pin 6 is removed from the bottle hole 3a of the tension bar 3, the working medium is actuated from outside. When the medium is supplied to the cylinder 8 through the medium supply/discharge pipe 11, the piston 8b moves upward, and the transfer pin 6, which is integrated with the piston rod 8C, rises without being hindered by the lifting beam 7 and moves into the bottle hole. Leave from 3a.

The moving pins 6.6' are installed in the moving pin insertion holes 1a, 1b of the press table 1 in place of the moving pins 5.5' in the conventional example.

Insert the moving pin 6 or 6' into the pin hole 3 of the tension bar 3.
a, 3b, 3'a, 3'b. If the working medium is discharged from the cylinder 8 or 8' after aligning either the insertion hole 1a or 1b of the moving pin of the press table 1 with the bottle hole of the tension bar to be moved, the moving pin 6 or 6' becomes under its own weight. and fall into engagement with the predetermined bottle hole.

As can be understood from the above explanation, by motorizing the movement of the press table movement pin into and out of the tension bar bottle hole, the movement pin can be operated by supplying the working medium to the tension bar feeding cylinder. It is now possible to perform centralized operations at the press control desk as well as exhaust.
Workers are freed from heavy labor under poor working conditions, and their work efficiency is significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing a press table moving device;
Figure 2 is a sectional view taken along line A-A in Figure 1, Figure 3 is B in Figure 2.
- A partial sectional view taken along the line B. Figure 4A is a plan view illustrating the work of attaching and detaching the moving pin of the conventional press table to the tension bar. 5 is a sectional view showing how the moving pin of the press table according to the present invention is secured to the tension bar, and FIG. 6 is a sectional view taken along the line D--D in FIG. 5. 1...Press table, LA, LB...
・Moving pin insertion hole, 2...Lower frame, 3
...Tension bar, 3 a, 3 b...
...Pin hole, 3'a, 3'b...Pin hole, 4
゜4'...Tension bar feed cylinder, 4
a, 4'a...lam, 5.5'...
Moving pin, 6, 6'...Moving pin, 7...
...Lifting beam, 8...Cylinder,
8a... Cylinder lid, 8b... Piston, 8C... Piston rod, 11...
...Working medium supply and discharge pipe.

Claims (1)

[Scope of utility model registration request] A lifting beam that incorporates a cylinder for operating the moving pin in the moving pin that is connected to the tension bar for moving the press table, and is installed across the cylinder lid and the insertion hole for the moving pin provided in the press table. and
A press table moving pin characterized by having the piston rod tip fixed to the bottom of the moving pin.