JPS6154490B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an idle work support device in a transfer press.

Generally, in a transfer press, idle stations may be formed between or before and after each processing station. In other words, this idle station can be used in places where there are supports of the transfer press on both sides of the workpiece conveyance path and where it is impossible to install a die to be replaced, or in a transfer press where four processing stations can be installed, for example. This occurs when three processing stations are installed, leaving one additional processing station, but even in that case, it is necessary to provide a support stand for supporting the workpieces that are sequentially transported at the idle station. Furthermore, when the type of workpiece changes, the workpiece support of the idle station must also be replaced when replacing the bolster and the mold.

Therefore, conventionally, when replacing the bolster and the mold, a worker enters the transfer press and replaces the workpiece support of the idle station, but the transfer press is not equipped with a safety device. However, the danger of replacement work cannot be denied, and there is also the problem that the machine must be stopped until the work is completed, which lengthens setup time and lowers productivity.

As a means to solve the above-mentioned conventional problems, the present invention provides idle stations between, in front of, behind, etc., the processing stations on the bed, and between the supports on both sides of the bed in the workpiece conveyance direction. The workpiece support stand of the idle station is supported on a bolster or mold near the idle station, and the workpiece support stand is placed on this bolster or mold to adjust the workpiece support position during transfer press operation and as a support when replacing the bolster or mold. An object of the present invention is to provide an idle work supporting device for a transfer press, which is provided with a drive means for moving an idle workpiece between the workpiece and the escape position that does not interfere with the workpiece. That is, in the present invention, when the transfer press is in operation, the work support is provided at the work support position of the idle station, and when replacing the bolster or the mold, the drive means sets the work support to the escape position and interferes with the support column. This allows the workpiece to be pulled out to the side in the workpiece conveyance direction together with the bolster or mold without any problems.

Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a transfer press, in which a plate-shaped workpiece 2 is sequentially conveyed from left to right in FIG.
d, respectively, and the first
A front idle station 4a is provided in front of the processing station 3a, an intermediate idle station 4b is provided between the second processing station 3b and the third processing station 3c, and a rear idle station 4c is provided next to the fourth processing station 3d. .

That is, in the transfer press 1, 5 is a bed, and 6 is a column provided on both sides of the bed 5 in the workpiece conveyance direction at intervals in the workpiece conveyance direction.
a, 4b, and 4c are provided between the columns 6 and 6 on both sides in the workpiece conveyance direction, that is, at positions where the columns 6 are blind spots when the transfer press 1 is viewed from the side. Further, 7 is a bolster to which the molds 9a and 9b of the first processing station 3a and the second processing station 3b are attached, and 8 is the third processing station 3.
c and the mold 9c of the fourth processing station 3d,
9d, and idle work support devices 10 are installed near the idle station, that is, on the front and rear sides of both bolsters 7 and 8.
is installed. Further, reference numerals 11 and 12 are bolsters used for press processing of a different type of workpiece from the workpiece 2 being transported to the transfer press 1, and are provided at each of the processing stations 3a, 12, respectively.
Molds 13a, 1 corresponding to 3b, 3c, 3d
3b, 13c, and 13d, and an idle work support device 10 are attached to one side of the transfer press 1 to wait for a different type of work to be transported next. Note that the work 2 in this example is a roof panel of a cab-over-van type vehicle.

In the idle work support device 10, 1
Reference numeral 5 denotes a workpiece support stand, which in this example includes a pipe-shaped frame 16 as shown in FIGS. 2 and 3;
It consists of a mounting base 17 fixed to the frame 16 and a nest 18 attached to the mounting base 17, and the workpiece support base 15 is provided at two locations on the left and right sides of the bolster and is rotatable. ing.

That is, the frame 16 has a vertical part connected to one end of the horizontal part facing downward, and the lower end of the vertical part supports the bush 20 on the support tube 19 attached to the side surface of the bolsters 7, 8, 11, and 12. A mounting base 17 is attached to the end of the horizontal part.
is permanently installed. The end of this horizontal part and the mounting base 1
7 has a mounting hole 21 that passes through both vertically, and a rod 22 with a nest 18 protruding from the bottom surface of the mounting base 17 is inserted into the mounting hole 21.
It is supported by being inserted into.

To explain the drive means for the workpiece support stand 15, parallel links 23, 23 of equal length are protruded from the vertical parts of the left and right frames 16, 16, respectively, and both parallel links 23, 23 connect to the connecting rod 24. The piston rod 26 of the driving cylinder 25 is connected to the connecting rod 24, and the cylinder 27 of the driving cylinder 25 is connected to the bolsters 7, 8,
11, 12, and by moving the piston rod 26 back and forth, the workpiece support 15 is extended in front of or behind the bolsters 7, 8, and when the transfer press 1 is in operation, it can be moved at the idle station 4a, 4b or 4c. It is configured to rotate between a workpiece support position where the workpiece 2 is supported and an escape position where it is parallel to the front and rear sides of the bolsters 7 and 8 to avoid interference with the support column 6 when replacing the bolsters 7 and 8. .

In the above embodiment, the workpiece 2 is sequentially conveyed through each station one by one from the front idle station 4a to the rear idle station 4c of the transfer press 1, and is sequentially transferred to different presses at the first to fourth processing stations 3a to 3d. undergo processing. Then, if a workpiece of a different type than the currently transported workpiece 2 is scheduled to be transported next, preparations for making the transfer press 1 compatible with the workpiece to be transported next must be made outside the transfer press 1. This is carried out while the transfer press 1 is in operation.

That is, the bolsters 11 and 12 are separately placed on standby on one side of the transfer press 1, and both the bolsters 1
1 and 12, the first to fourth processing stations 3a to
Molds 13a, 13b and 13 corresponding to 3d
c, 13d, and a nest 18 for placing the next work to be transported on the mounting base 17 of the idle work support device 10. After all the press working of the workpiece 2 currently being conveyed is completed, both the bolsters 7 and 8 in the transfer press 1 are moved to the drive cylinder 2.
5, each idle station 4a,
4b, 4c workpiece support stand 15 is connected to each bolster 7,
8 and take it out to the opposite side of the waiting bolsters 11 and 12.
Then, the waiting bolsters 11 and 12
is placed into the transfer press 1, and the work support table 15 is rotated by driving the drive cylinder 25 so that it can support an idle work.

In addition, the front and rear idle stations 4
In the illustrated example, the workpiece support stand 15 is provided only on one side of the workpiece 2, but a separate workpiece support stand is attached to the other side.

Further, the bolsters 7 and 8 taken out to the outside of the transfer press 1 are prepared in the same manner as described above for the next work to be transported, that is, the molds and nests are replaced and placed on standby.

Incidentally, in the above embodiment, the idle work support device 10 is attached to the bolster, but it may be attached to the mold.

Furthermore, in the above embodiment, each workpiece support stand 15
Although one side of the workpiece is supported in the above embodiment, the horizontal part of the frame 16 may be extended for a long time, and nests for supporting both sides of the workpiece may be attached to the horizontal part. Further, the workpiece support may be one in which a frame and a nest are integrated, and furthermore,
The workpiece support table may support the workpiece by directly placing it on the horizontal part of the frame without attaching a nest.

As described above, according to the present invention, an idle station is provided between the pillars on both sides of the bed in the workpiece conveyance direction, and for the bolster or mold to be replaced.
The work support base of the idle station is installed so that it can be moved by a drive means between the work support device when the transfer press is in operation and an escape position that does not interfere with the supports or supports when replacing the mold. Since the workpiece support table can be prepared in advance according to the shape of the workpiece to be transferred next, the workpiece support table can be replaced at the same time as the mold of the transfer press, which greatly reduces the time required for replacement. In addition to being able to shorten the time, there is an excellent effect in that the safety of the workers is ensured because there is no work to be done inside the transfer press.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention, and FIG. 1 is a schematic plan view of a transfer press showing the support column in cross section, and FIG. 2 is a plan view showing an enlarged idle work support device with the nest removed. FIG. 3 is a sectional view taken along the - line in FIG. 2. 1...transfer press, 2...work, 3
a to 3d... processing station, 4a to 4c...
Idle station, 5... Bed, 6... Support, 7, 8, 11, 12... Bolster, 9a-9
d, 13a to 13d... Mold, 10... Idle work support device, 15... Work support stand.

Claims (1)

[Claims] 1. A transfer press in which supports are provided at predetermined intervals on both sides of the bed in the workpiece transport direction, a plurality of molds are attached to the bolsters on the bed, and the workpieces are sequentially transported and pressed, an idle station that is provided between, in front of, behind, etc. the processing stations and located between the supports on both sides of the bed in the workpiece conveyance direction;
The work support stand of the idle station supported by the bolster or mold near the idle station, and the work support stand provided on the bolster or mold are set to the work support position during transfer press operation and the support when replacing the bolster or mold. An idle work support device for a transfer press, characterized in that it is provided with a drive means for moving it between an escape position and an escape position that does not interfere with the transfer press.