JPS59107734A - Method for dividing and connecting transfer bar in three column type transfer press - Google Patents

Abstract

PURPOSE:To perform a die change with good efficiency by fixing temporarily the 3rd transfer bar in the dividing position of each transfer bar then moving upward two units of moving bolsters at the same time to divide simultaneously the respective transfer bars and connecting the same by the means reverse therefrom. CONSTITUTION:The 3rd transfer bar B3 is fixed temporarily to a central upright 12 in the dividing positions of transfer bars B1-B5, and the 1st and 2nd moving bolsters MB1, MB2 are moved upward to support the 2nd and 4th transfer bars B2, B4, whereafter the 1st and 2nd transfer bars B1, B2 are moved to the feed side and the 4th and 5th transfer bars B4, B5 to the delivery side, thereby dividing the transfer bars. The connection of the bars B1-B5 is accomplished in the procedure reverse thereabove. The time for division and connection is thus reduced and the efficiency in the die change is correspondingly improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for dividing and connecting a transfer bar equipped with a three-post transfer press.

Conventionally, in a two-post type transfer press having two moving bolsters, the transfer bar is divided into five sections: for each bolster, between them, and at the carry-in end and the carry-out end. Of these, the transfer levers on each bolster can be freely drawn out together with the moving bolster, and the remaining nine transfer levers are placed on standby between each applied. Furthermore, when changing the die, each transfer bar is divided in the following steps, and then connected again after changing the die.

Now move each transfer bar from the workpiece loading side to the first to fifth transfer bars Bl + B2 w B3 + B
4 + and B, first, when the die change starts, each transfer bar B1 to B5 is moved to the unloading side (right hand) as shown in Fig. 1 (A). then the second
The moving bolster BM1 rises to support the fourth transfer lever B4 downward as shown in FIG. 1(b).

In this state, the first to third transfer servers B, , B
2. B, to the loading side, and the fifth transfer station B,
is moved to the unloading side and divided into the fourth transverse fabric B and t. (Figure 1c). Thereafter, the first moving bolster MBJ is raised to support the second transfer lever B2 as shown in FIG. B3 is moved to the left and right, respectively, and the space between them is divided as shown in FIG. 1 (E). In this state, the second transfer bar B2 and the fourth transformer bar B, I
d First and second moving bolts IfBl.

It is carried out from the press body together with M B 2 and a die change is performed. Each moving bolster M B l
, ltf B 2 is completed, each of the bolsters Af B l and Af B 2 is carried into the press body again, and as shown in FIG. Connect each transfer server B by following the procedure shown in a) to d) in reverse order.

The above is the conventional procedure for dividing and connecting each transfer lever. However, in the above method, each moving bolster is raised in sequence to support the second and fourth transfer levers, so it takes time to divide into 11 parts. In addition to being inefficient, there is also the problem that, for example, even when only the guide of the first moving bolster hfBl is replaced, the above-mentioned dividing procedure must be performed.

This invention was made with the purpose of solving this problem, and involves temporarily fixing the third transfer lever at the split position of each transfer lever, then simultaneously raising the two moving bolsters, and moving between the transfer bars at the same time. To provide a method for dividing and connecting a transfer bar in a two-post transfer press by dividing it and connecting it in the reverse procedure to the above, thereby enabling die change to be carried out efficiently in a short time.

The method of this invention will be described in detail below with reference to an embodiment shown in FIGS. 2(a) to 2(a).

The first to fifth transfer aba B, 132. B3. B4
In the case of ゜ and B, each transfer bar B or B is first moved to the unloading side (right hand) as shown in FIG. When each transfer bar B1 to B reaches the dividing position shown in FIG. 2(B), the third transfer bar B3 is fixed with a lock pin 2 within the press body. Thereafter, the first and second moving bolsters, 1/Bl, J/J/B2 are raised as shown in 2121(c), and the second and fourth transfer bars B2. In this state, as shown in Figure 2), the first and second transfer bars B, ,
B2 to the left, and the fourth and fifth transfer bars B4゜B
Move 11 to the right. At this time, the second and fourth transfer bars B2. Movement amount f of B4: 1st, i5) Almost twice the movement amount C of transfer bars B, , B, and a gap C is created between each transfer bar B1 to B (
(See Figure 2 (e)). In this state, the second transfer server B
The 2nd and 4th transfer bars B4 are carried out of the press body together with the 11th and 2nd moving bolsters JllR1 and MB2, and either one of the moving bolsters MB is carried out.
l, MB 2 tllit out and die change.

Each moving bolster, 14 B + , , 4/B
After the die change to 2 is completed, the first and second moving bolsters tVB l and #B 2 are carried into the press body 1 again, and each transfer lever is moved in the reverse order of the steps in Fig. 2 (a) to d) above. B to B5 are connected, and finally, the third transfer bar B is released.

As described in detail above, the present invention provides that each transfer bar 13
．． The third transformer 7 aba B at the dividing position of
3 is temporarily fixed to the central applied 12, and in this state, the first and second moving bolts, UfBJ, and AlB2 are raised to support the second and fourth transformers 7AhaB2 + B4, and then the first , second transfer server I3+, /
J2 to the 4N'a input side, and the fourth and fifth transfer bars fJ4. B is moved to the unloading side to divide the transfer bars B1 to 82, and the connection of each transfer bar B to B is performed in the reverse procedure to the above, which is different from the conventional moving method. Bolster MB
The time required for division and connection can be shortened compared to when the transfer servers B1 to 87 are divided by sequentially increasing the values of B1 and MB2, thereby making it possible to perform the changeover efficiently. In addition, each moving bolster M'BI
.

/M 132, for example, the first moving bolster M,
When only B l is to be changed, it is only necessary to divide the die change side moving bolt MB l, the transfer bar above MB 2, the transfer bar connected thereto, and the third transfer bar B3. This method also has the effect of allowing only the ties to be replaced in a shorter time and with peace of mind compared to the method of dividing the transfer bar.

[Brief explanation of drawings]

Figures 1 (a) to 1) are explanatory diagrams showing a conventional division procedure, and Figures 2 (a) to 1) are explanatory diagrams of a division procedure showing an embodiment of the method of the present invention. B is the first to fifth transfer server, No.Sf
B l u 1st moving bolster! IfB2 is the second moving bolster. Figure 2

Claims (1)

[Claims] In a two-post transfer press having a plurality of transfer bars divided into first to fifth transfer bars B1 to B, the third transfer bar 133 is attached to the center applied part of the press body 1 at the dividing position of each transfer bar B1 to B. 12 temporarily, and in this state the first,
The second moving bolster M131 and JIB2 are raised, and the second and fourth transfer bars B2. After supporting the first and second transponders 13. , B2 to the carry-in side, and the fourth and fifth transfer bars 8 and 8 to the carry-out side, respectively, to divide each transformer 7 aba B or B2. A method for dividing and connecting transfer bars in a two-post transfer brace, characterized in that the connection is performed in the reverse order to the above.