JPH04319032A - Automatic crossbar exchanger of transfer feeder - Google Patents

Abstract

PURPOSE:To completely automatically change a crossbar by providing a crossbar changing robot to mount a crossbar on a crossbar transferring means and a crossbar storing rack to store plural crossbars. CONSTITUTION:The crossbar 8 used for the next time is selected from a crossbar storing rack 3, taken out by a crossbar changing robot 2 from the crossbar storing rack 3. The crossbar 8 is mounted in a prescribed order on the crossbar receiving table 12 of a moving bolster 9 waiting at the lower part of a crossbar changing robot 2 after the die 11 is changed already. When forming is completed, the spent die 11 and the crossbar 8 are carried out of the press body 1 with the moving bolster, then crossbars are carried from the waiting position into the press body 1 and crossbars 8 are mounted between each transfer bar.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic crossbar exchange device for a transfer feeder that enables automatic exchange of a plurality of crossbars suspended between transfer bars.

0002

[Prior Art] Conventionally, a transfer press that uses vacuum conveyance has a pair of transfer bars arranged in parallel along the workpiece conveyance direction inside the press body, and a plurality of cross bars are arranged at equal intervals between these transfer bars. It is suspended horizontally. Workpiece suction means such as vacuum cups are attached to these cross bars as attachments, and these workpiece suction means are configured to suction the workpieces and transport them sequentially to each processing station as the transfer bar moves two-dimensionally. ing. In the above-mentioned transfer press, each time the shape of the workpiece to be molded changes, the crossbar and the mold are removed from the press body, and the crossbar and workpiece suction means are replaced by external setup.

0003

[Problems to be Solved by the Invention] However, in the above-mentioned conventional transfer feeder, the crossbars and the workpiece suction means are manually attached and detached using a crane, so it takes a lot of time to replace them. There was a problem with poor efficiency. In particular, as presses themselves have become larger in recent years, the crossbars have also become larger and heavier, which has led to problems such as requiring more time to replace them and making the work more dangerous. This invention was made with the aim of improving the above-mentioned conventional problems, and aims to provide an automatic crossbar exchange device for transfer bars that allows crossbar exchange to be carried out automatically without manual intervention. be.

0004

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a method for attaching and detaching a plurality of cross bars to which work holding means are attached between a pair of transfer bars arranged in parallel in the work transport direction. In a transfer feeder of a transfer press that is freely suspended horizontally, the plurality of crossbars are assembled into one set, and the crossbar conveying means is detached from the transfer bar and carried in and out of the press body, and one set is carried in and out of the press body. The crossbar to be used next is taken out from the crossbar transport means, stored in the crossbar rack, and stored in a predetermined location of the crossbar storage rack, and the crossbar to be used next is taken out from the crossbar storage rack together with the crossbar rack. , a crossbar exchange robot that places a crossbar on the crossbar transport means, and a crossbar storage rack that stores a plurality of crossbar racks each containing one set of crossbars.

[Function] With the above configuration, a used crossbar can be removed from a transformer bar and stored in a crossbar storage rack, and the next crossbar to be used after being removed from a crossbar storage rack can be attached to a transfer bar. Everything can be done automatically and unattended.

[0005]

[Embodiment] An embodiment of the present invention will be described in detail with reference to the drawings shown in FIGS. 1 to 9. 1 and 2 are general views, and FIG. 3 and subsequent figures are detailed views of the automatic crossbar exchange device. In FIGS. 1 and 2, 1 is a transfer press main body, a crossbar exchange robot 2 and a crossbar storage rack 3 are installed on the upstream side of the press main body 1, and completed workpieces 4 are automatically transferred to a pallet 5 on the downstream side. An automatic palletizer 6 is installed to load the containers. Inside the press body 1, a pair of transfer bars (not shown) are arranged in parallel in the workpiece conveyance direction, and a plurality of cross bars 8 are horizontally suspended between these transfer bars at equal intervals and detachable. The bar 8 and the moving bolster 9 can be taken in and out from inside the press body 1.

Each of the crossbars 8 is a set of a plurality of crossbars that are used simultaneously during one molding lot, and a workpiece holding means 10 such as a vacuum cup that sucks the workpiece 4 to each crossbar 8 is detachable. It is freely attached, and when replacing the mold, it is placed on the crossbar pedestals 12 erected on both sides of the moving bolster 9, and is carried out together with the moving bolster 9 to the front or rear side of the press body 1, and then The crossbar exchange robot 2 is moved on the rails 13 installed at the front and rear of the press body 1.
The crossbars will be transported to a crossbar replacement location.

At the crossbar replacement location, a pair of running rails 15 are installed above in the Y-axis direction parallel to the workpiece conveyance direction.
A crossbeam 16 is installed between these running rails 15.
is horizontally suspended so as to be movable in the Y-axis direction. A crossbar exchange robot 2 is placed on the crossbeam 16. As shown in FIGS. 3 and 4, the crossbar exchange robot 2 has a parent carrier 18 that runs on rails 17 installed on a crossbeam 16. The parent carrier 18 above is X
The main carrier 18 is movable along the rails 17 in the X-axis direction by a shaft travel motor 19, and a child carrier 20 is provided on the main carrier 18 that is movable in the Y-axis direction. The child carrier 20 is provided with one lifting beam 24 that is moved up and down in the Z-axis direction by a Z-axis drive motor 23 via a pinion and a rack (both not shown). A crossbar clamp 25 is attached to the lower end via a turning mechanism 21.

As shown in FIGS. 6 and 7, in the rotating mechanism 21, a crossbar clamp 25 is rotatably supported on a yoke 26 fixed to the lower end of an elevating beam 24 via a support shaft 27. A swing motor 29 is connected to one end of the support shaft 27 via a reducer 28, and the swing motor 29 causes the crossbar clamp 25 to rotate around the support shaft 27.
As shown in the figure, the crossbar clamp 25 can rotate approximately 180 degrees, and the rotation angle of the crossbar clamp 25 is detected by a rotary encoder 30 provided on the rotation motor 29, which controls the crossbar exchange robot 2. The data is sent to a device (not shown). Further, the crossbar clamp 25 has a groove 32 formed in its lower part into which the intermediate portion of the crossbar 8 is fitted.
An electromagnetic magnet 33 that attracts the crossbar 8 is provided inside.

On the other hand, two lifting beams 35 are supported on the parent carrier 18 so as to be vertically movable. These lifting beams 35 are moved up and down in the Z-axis direction by a Z-axis motor 36 via a pinion 37 and a rack 38, and a rack clamp 39 is provided at the lower end of each lifting beam 35. A crossbar rack 40 is adapted to be lifted. The crossbar rack 40 is formed into a frame shape, and has hooks 42 on vertical rods 41 provided on both sides with which one set of crossbars 8 can be engaged at equal intervals in the vertical direction. Multiple pieces are prepared in advance for each set, and
Addresses are displayed on these crossbar racks 40 using bar codes or the like, so that it is possible to read where in the aforementioned crossbar storage rack 3 the crossbar storage racks 3 are stored.

On the other hand, FIGS. 8 and 9 show a finger exchange robot 45, in which a finger 5 is attached to a transfer bar 52.
When the workpiece 4 is transported with the finger 53 attached, the finger 53 is replaced by the finger replacement robot 45 when replacing the mold. That is, the finger exchange robot 45 has a carrier 47 that is movable in the Y-axis direction by a Y-axis travel motor 46.
An elevating beam 48 is attached to be movable up and down. At the lower end of the lifting beam 48 is a finger clamp 5 which can swing freely around a pin 50 by a swing cylinder 49.
1 is provided, and the fingers 53 are removed by the transfer bar 52 which is carried out of the press body 1 by the moving bolster 9 along with the mold 11 and stored in the finger rack 54, and the fingers 53 to be used next are removed from the finger rack 54. It is configured to be taken out and attached to the transfer bar 52.

Next, the operation will be explained. A plurality of sets of crossbars 8 are stored in the crossbar storage rack 3 in advance, each set being engaged with a crossbar rack 40, and the crossbar exchange robot 2 is waiting above the crossbar storage rack 3. . Next, when replacing the mold, the cross bar 8, which is automatically removed from the transfer bar, is carried out from the press body 1 together with the mold 11 and the moving bolster 9, and transported to a cross bar replacement location. During this time, the mold 11 and cross bar 8 prepared in advance are carried into the press body 1, and the cross bar 8 is carried into the transfer bar.
When set, the press main body 1 starts operating.

On the other hand, the crossbar 8 transported to the crossbar replacement location is transferred to the crossbar replacement robot 2 waiting above.
It is clamped by a crossbar clamp 25 provided at the lower end of the lifting beam 24 lowered from the child carrier 20, and further rotated by approximately 90 degrees by the turning mechanism 21,
They are sequentially engaged in predetermined positions on a crossbar rack 40 waiting above the mold 11. Once one set of crossbars 8 have been engaged with the crossbar rack 40, the moving bolster 9 is further moved to the mold exchange place and the mold 11 is replaced, and during this time the crossbars 8 are engaged. The crossbar rack 40 is moved to the crossbar storage rack 3 by the crossbar exchange robot 2 and stored in the crossbar storage rack 3 that matches the address displayed on the crossbar rack 40.

Thereafter, the crossbar 8 to be used next is selected from the crossbar storage rack 3 and taken out from the crossbar storage rack 3 by the crossbar exchange robot 2, and the crossbar exchange robot 2 has already finished exchanging the mold 11. 2
The crossbars 8 are placed in a predetermined order on the crossbar pedestals 12 of the moving bolster 9 waiting below. The moving bolster 9 on which the cross bar 8 is placed is moved to the front or rear of the press body 1 and waits at that position until the molding that is currently being performed is completed. When the molding is finished and the used mold 11 and cross bar 8 are carried out of the press main body 1 together with the moving bolster 9, they are carried into the press main body 1 from the standby position, and the cross bar 8 is placed between each transfer bar. will be installed. Note that during the above operation, the crossbar 8 and the crossbar holder 12
, the crossbar 8 and the crossbar rack 40, and the crossbar rack 40 and the crossbar storage rack 3 are positioned and placed, respectively, and these positions can be easily and accurately done by using, for example, locate pins. This is something that can be done.

[0014]

[Effects of the Invention] As described in detail above, this invention can automatically replace the crossbars of the transfer feeder installed in the transfer press, compared to the conventional work that had to be done manually by workers. crossbars can be replaced efficiently in a short time. In addition, multiple crossbars used in a molding lot are stored as a set in a crossbar storage rack, which prevents accidents such as crossbars used in other molding lots being accidentally set on the transfer bar. At the same time, it becomes easier to maintain and manage attachments such as the crossbar and workpiece suction means attached to it. Furthermore, the crossbar replacement work can be performed automatically according to a preset program, allowing transfer presses to
It will also be possible to operate unmanned for 4 hours.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the left half of the entire transfer press and crossbar automatic exchange device.

FIG. 2 is a perspective view showing the right half of the entire transfer press and crossbar automatic exchange device.

FIG. 3 is a front view of the crossbar exchange robot.

FIG. 4 is a side view of the crossbar exchange robot.

FIG. 5 is a plan view showing the vicinity of the X-axis travel motor.

FIG. 6 is an enlarged cross-sectional view of the crossbar clamp.

FIG. 7 is a side view of the crossbar clamp device.

FIG. 8 is a side view of the finger exchange robot.

FIG. 9 is a front view of the finger exchange robot.

[Explanation of symbols]

1 Press body, 2 Crossbar exchange robot, 3
Crossbar storage rack, 8 Crossbar, 40
crossbar rack.

Claims (1)

[Claims] 1. A transfer feeder of a transfer press in which a plurality of cross bars 8 each having a work holding means attached thereto are removably suspended between a pair of transfer bars arranged in parallel in the work conveyance direction, wherein the plurality of A set of crossbars 8 of books is attached and detached from the transfer bar, and a crossbar conveyance means is carried in and out of the press body 1, and a set of crossbars 8 carried in and out of the press body 1 is taken out from the crossbar conveyance means. At the same time, the crossbar 8 to be used next is taken out from the crossbar storage rack 3 together with the crossbar rack 40, and the crossbar is transported to the crossbar rack 40. means to crossbar 8
a crossbar exchange robot 2 on which a crossbar is placed, and a plurality of crossbar racks 40 that accommodate one set of crossbars 8.
An automatic crossbar exchange device for a transfer feeder, comprising a crossbar storage rack 3 for storing crossbars.