JPS5942189Y2 - Workpiece conveyance device in press - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a conveying device for supplying a sheet material as a workpiece to a press and simultaneously transporting a molded workpiece out of the press.

Recent presses tend to be larger and faster, and shortening the time required to supply workpieces has a significant impact on improving production capacity.

This idea was created in view of the above-mentioned circumstances, and aims to provide a loading/unloading device with reliable operation and good workability, that is, a workpiece conveyance device that can cope with the increase in size and speed of presses. It is something to do.

Hereinafter, embodiments of this invention will be described with reference to the drawings.

In this specification, "front" refers to the front in the direction in which the workpiece is carried into the press, that is, the right side in Fig. 2, and "rear" refers to the opposite side, that is, the left side in Fig. 2, and refers to both left and right sides. 1 refers to both the left and right sides of the workpiece conveyance direction, that is, the left and right sides in FIG.

The conveying device of this invention consists of a crossbeam 3 whose both ends are attached to the vertical surfaces of the applied 2 on both the left and right sides of the press 1, and the crossbeam 3.
a carriage support frame 4 slidably mounted on the carriage support frame 4;
A carriage 5, a carriage drive device 6 disposed above the center of the conveyance line, a gripper 7 and pushers 8, 9 suspended from the carriage 5, a roller table 10 that can be raised and lowered, and a stopper 1 for stopping and positioning the workpiece.
It is composed of 1.

In the embodiment of this invention, the carriage support frames 4 are arranged on both sides of the carriage drive device 6 to form a pair.

Therefore, regarding the carriage 5 and the like built into the carriage support frame 4, only the one on the left side will be explained, and the explanation of the one on the right side will be omitted because the structure is the same.

The crossbeam 3 is box-shaped, and a carriage support frame 4 that surrounds the crossbeam 3 from all sides and extends downward and rearward is attached to the crossbeam 3 via guide shoes 12 so as to be slidable in the left-right direction.

The carriage support frame 4 includes a box-shaped base 4A fitted to the crossbeam 3, side plates 4B extending downward and rearward from the left and right ends of the box-shaped base 4A, and side plates 4B in the central portion.
A horizontal member 4C that connects between the parts.

4D, a reinforcing member 4E, and an L-shaped carriage support guide rail 13 extending in the front-rear direction and fixed in parallel to the lower ends of the opposing inner surfaces of the side plates 4B.

In the carriage support frame 4, on the lower side of the horizontal member 4D, a shaft portion 15B of a carriage drive pinion 15, which has spline internal teeth 14 and tooth portions 15A are formed at both outer ends, is attached to the shaft portion 15B in the left-right direction by a bearing 16. A spline shaft 17 passing through the carriage support frame 4 from side to side is inserted into the spline internal teeth 14 .

The carriage 5 has a box shape and is supported by the guide rail 13 via running rollers 18 so as to be able to run, and is guided in the horizontal direction by guide rollers 19 attached to both left and right sides.

On the upper surface of the carriage 5, a rack support member 21 having rack teeth 20 fixed to the upper end on both left and right sides is erected. Forced to move back and forth.

The carriage 5 includes a gripper I and a pusher 8,
A box-shaped mounting frame 22 for mounting the frame 9 is mounted so as to be movable up and down by a threaded spindle 23.24, and a nut metal fitting (not shown) screwed onto the threaded spindle 23.24 is rotatably attached to the carriage 5. installed on.

Then, by rotating this nut hardware by the motor 25 via the miter gear 26, universal joints 27, 28, and worm gear mechanism (not shown), the mounting frame 22 is moved up and down, and the gripper 7
The height of the mold 29 can be adjusted to match the height of the place mold 29 (see FIG. 3).

In addition, the piston rods 31 of the balance cylinder 30 mounted on the carriage 5 are located at the four corners of the mounting claim 22.
The ends are attached via horizontal pins 32 to the mounting frame 2.
2 is always kept horizontal.

Furthermore, the carriage 5 includes a balance cylinder 30.
A guide rod 34 whose lower end is attached to the four corners of the mounting frame 22 by pins (not shown) is passed through the outer side in the front-rear direction.

A pusher 8 is attached to the lower surface of the front end of the mounting frame 22, and a gripper 7 is attached in front of the pusher 8 by an arm 35 so as to be positioned at a distance approximately equal to the stroke of the carriage 5.

A pusher 9 for carrying out the workpiece is attached to the front of the mounting frame 22 so that its position can be changed in the front and back direction so that the pusher 9 is lined up next to the gripper 7 and its tip is located in front of the gripper 7. Cylinder device 3 installed in
6 allows you to leave.

The workpiece W pushed out of the mold 29 by the pusher 9 is transferred onto a conveyor 37 and transported to the next step.

A restraint cylinder 38 is attached to the upper surface of the horizontal member 4C of the carriage support frame 4 so as to be able to swing in the vertical direction to eliminate backlash between the pinion 15 and the rack teeth 20 and to keep the stroke of the carriage 5 constant at all times. .

The piston rod end 39 of the restraint cylinder 38 is connected to the upper end of a swing lever 41 swingably attached to the carriage support frame 4 about a horizontal shaft 40 by a pin 42 .

The lower end of this swing lever 41 is connected to the other end of a link 44 swingably attached to the upper surface of the carriage 5 via a pin 43 by a connecting pin 45.
is always biased forward (or backward).

The roller table 10 is arranged close to the material supply side of the press 1 and is configured to be able to be raised and lowered by a lifting device 46, and is connected to a rear chain conveyor 47 and a roller table 48.
The workpiece S1 transferred from the conveyor 49 is raised so that it can be gripped by the gripper 7 and carried into the press die 29, and the subsequent workpiece S2 is moved by the pusher 8 to the gripper. Position 1 where 7 can grab
It can be pushed and moved.

The workpiece stop positioning stopper 11 is provided in front of the roller table 10, falls to the side at the same time as the roller chiffle 10 reaches its upper limit, and stands up immediately after the gripper 7 passes, and then moves to the pusher. It receives the subsequent workpiece S2 pushed by 8.

The chain conveyor 47 is a chain conveyor to which a plurality of dogs 50 are attached at regular intervals, and a roller table 48
The roller table 10 is arranged in parallel with the lower limit of the roller table 10, and is located at a level slightly higher than the lowering limit of the roller table 10.

Reference numeral 51 denotes a position detection spindle of the mounting frame 22, which is erected on this frame 22, and a digital sensor 52 provided inside the carriage 5 measures the amount of elevation of the position detection spindle 51.
input to a control device (not shown) as a digital signal to detect the positions of the gripper 7 and pushers 8 and 9,
The motor 25 is controlled to stop the gripper 7 and the like at a predetermined set level.

Attached to the upper surface of the box-shaped base 4A of the carriage support frame 4 is a metal nut 54 into which a carriage position adjustment screw shaft 53 parallel to the crossbeam 3 is screwed.

Both ends of this screw shaft 53 are supported by bearings 55 on the crossbeam 3, and are driven by a geared motor 56.

The outer ends of the spline shaft 17 in the left and right direction are each connected to a crossbeam 3.
The inner end is rotatably supported by a bearing 57 attached to the lower surface of the frame 58 of the carriage drive device 6, and the inner end is supported by a bearing 59 attached to the lower surface of the frame 58 of the carriage drive device 6, and connected to the end of the pinion shaft 60 by a coupling 61. has been done.

The carriage drive frame 58 is fixed to the center of the crossbeam 3, and a drive motor 62 is installed at the top.

The output of the motor 62 is transmitted from a pulley 64 attached to its shaft 63 to a clutch/brake 66 by a belt 65.
is transmitted to a pulley 68 of a transmission shaft 67 provided with
．． The signal is transmitted to the crankshaft 74 via the reduction gear 12 and the main gear T3.

A connecting rod 15 is added to the crankshaft 74, and a rack 76 that is reciprocated up and down is connected to the lower end of this connecting rod 75.

A pinion 77 attached to the pinion shaft 60 is meshed with the rack 76 to convert the vertical and reciprocating linear motion of the rack T6 into forward and reverse rotational motion.

Next, the operation of the device of this invention will be explained.

1. As shown in FIG. 2, the workpiece S is carried onto the roller table 48 by the conveyor 49, and further transferred to a position 82 on the roller table 10 by the dog 50 of the chain conveyor 47. Ru.

In this state, when the roller table 10 is raised by the lifting device 46 and the motor 62 is operated to drive the spline shaft 17, the carriage 5 moves forward due to the rotation of the pinion 15, and the workpiece S2 is moved by the pusher 8 It is positioned by hitting the stopper 11 that is pushed forward at position 1.

Note that at this time, the gripper on the roller table 10
If there is a workpiece S1 under the gripper 7, it will be grabbed by the gripper 7 and sent into the press mold 29, and if there is a workpiece W formed in the press mold 29, the pusher 9 will move the workpiece W
is pushed out and transferred onto the conveyor 37.

Therefore, when the roller table 10 descends, the carriage 5 retreats, and at the same time the conveyor 47 feeds the subsequent workpiece S onto the roller chiffle 10.The roller table 10 rises again, and the carriage 5 moves forward. , the workpiece S0 is moved forward by the gripper 7 to the press die 29, the workpiece S2 is advanced by the pusher 8, and the shaped workpiece W is pushed out by the pusher 9. The operation is repeated and performed smoothly and in a timely manner in synchronization with the lifting and lowering movement of the press slide.

Note that when the length of the workpiece S in the left-right direction is changed, the motor 56 may be driven to rotate the screw shaft 53 and the carriage support frame 4 may be moved to an appropriate position.

Furthermore, when the level of the press die 29 changes, the motor 25 is operated to rotate the nut hardware of the threaded spindle 23, 24 to move the mounting frame 22 up and down, thereby increasing the height of the gripper 1, etc. is adjusted to match the level of the press mold 29.

The stroke of the elevating device 46 of the roller conveyor 10 is adjusted so that the upper limit of the rise corresponds to the level of the press die 29.

When replacing the press mold 29, the cylinder device 36 is operated to move the pusher 9 backward so that there is no problem in the mold replacement work.

As mentioned above, this invention consists of a crossbeam 3 whose ends are attached to the vertical surface of the applied 2 on the workpiece supply side of the press 1, and a crossbeam 3 that is attached to the crossbeam 3 so that its longitudinal position can be adjusted. a carriage support frame 4, a carriage 5 mounted on the frame 4 so as to be able to reciprocate in the workpiece transport direction, a carriage reciprocating drive device 6 mounted on the crossbeam 3, and a height adjustment mechanism for the carriage 5. A mounting frame 22 for attaching the gripper 7 and pushers 8 and 9 which are suspended so that they can be hung, and a roller table 1 that is disposed directly below the carriage support frame 4 and that can be raised and lowered.
0 and a stopper 11 for stopping and positioning the workpiece, and pushers 8 and 9 are arranged before and after the gripper 7, so that the workpiece can be moved smoothly and reliably in synchronization with the vertical movement of the press slide. It can be carried into and out of the press mold, and the operation is reliable and quick, making it fully compatible with larger and faster presses. The height of the workpiece feed surface can be adjusted arbitrarily according to the level of
And it is easy to adjust.

The reciprocating drive device 6 for the carriage 5 according to this invention is not limited to this embodiment.

[Brief Description of the Drawings] The drawings show an embodiment of this invention, in which Fig. 1 is a partially cutaway front view, Fig. 2 is an enlarged sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is an enlarged sectional view taken along the line The figure is an enlarged top view of the carriage. 1...Press, 2...Applied, 3
...... Cross beam, 4 ... Carriage support frame, 5 ... Carriage, 6 ... Carriage drive device, 7 ... Gripper, 8 .9...
... Gutsher, 10 ... Roller table, 11 ... Workpiece stop positioning stopper, 2
2... Mounting frame, S, W... Workpiece.

Claims (1)

[Scope of utility model registration request] A cross beam 3 whose ends are attached to the vertical surface of the applied 2 on the workpiece supply side of the press 1, a carriage support frame 4 mounted on the cross beam 3 so that its longitudinal position can be adjusted; A carriage 5 mounted on the frame 4 so as to be movable forward and backward in the workpiece transport direction, a carriage reciprocating drive device 6 mounted on the crossbeam 3, and a workpiece transport suspended from the carriage 5 in a height adjustable manner. gripper-γ
and a mounting frame 22 for mounting the pusher 8°9, a roller table 10 which is disposed directly below the carriage support frame 4 and is movable up and down, and a stopper 11 for stopping and positioning the workpiece. A workpiece conveyance device in a press in which pushers 8 and 9 are arranged at the front and rear.