JPH0832346B2 - Blank material feeder for transfer press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a device for sequentially conveying and supplying blank materials loaded on a transfer press one by one.

(Prior Art) As this type of device, the one disclosed by Japanese Utility Model Publication No. 62-4348 is known. In the technology described in the publication, a carrier is provided so as to be interlocked with forward and backward movements of a feed bar, and is vertically movable by a parallel link mechanism with a cylinder. Further, a plurality of vacuum pads are suspended on the carrier. On the other hand, a carrier with a downward magnet roller facing the rear side of the carrier and a conveyor with an upward magnet roller facing the front side are fixed, respectively, and the carrier moves forward, upward, backward and downward. Are sequentially carried out, and they are lifted one by one from the top of the stacked blank materials and attracted to the downward magnet roller. Then, the carrier is lowered and adsorbed even on the vacuum pad, and then moved forward along the magnet roller. Then, after the suction of the vacuum pad is released, the carrier rises and retreats. During that time, the blank material is adsorbed and held by the magnet roller, and is thus sequentially fed to the press side.

(Problems to be Solved by the Invention) Since the above-mentioned device attracts and holds a magnet, the blank material is limited to a magnetic material, and a non-magnetic material such as aluminum cannot be conveyed. In addition, since the blank material goes along the magnet roller when it is adsorbed by the vacuum pad and transferred, if the blank material is extremely thin, the tip of the blank material may hit the magnet roller and sometimes the However, there is a problem in that feeding is hindered, such as when the paper is bent or the tip end is sandwiched between magnet rollers.

The present invention is to solve the above problems. The blank material is not interfered with at all, and even if it is a non-magnetic material, it can be reliably transported and several blank materials are attached. It is an object of the present invention to provide a blank material supply device for a transfer press, which can prevent the supply to the press as it is and can reliably supply one sheet.

[Structure of Invention]

(Means for Solving the Problems) According to the solution of the present invention, a carriage is provided so as to be capable of horizontal reciprocating movement toward a transfer press, a plurality of vacuum pads are hung on the carriage, and the carriage is provided on the rear side thereof. A lift unit for lifting the blank material loaded on the dolly and delivering it to the carriage is provided, and, under the carriage, several pedestals are arranged at equal intervals along the press side from the lift unit, Each pedestal can be moved up and down, and at least one of the pedestals can detect the blank material that is conveyed while stacking several sheets, and the cylinder can tilt the pedestals to convey the material. This is due to the provision of a payout device for paying out.

(Examples) The present invention will be described with reference to specific examples. As shown in FIG. 1, the upper right side of the figure is the transfer press side, and only a pair of feed bars 1, 1 are shown. ing. An intermediate transfer section 2 and a lift section 3 are arranged from the feed bars 1, 1 toward the lower left side in the figure, and a carry-in section 4 is provided below the lift section 3. The lift unit 3 and the carry-in unit 4 constitute a blank material supply device.

The loading section 4 lays an inner rail 6 and an outer rail 7 on the floor surface at right angles to the direction in which the blank material 5 is conveyed toward the press, and connects the pair of carriages 8 and 8 to each other on the inner rail 6. It is provided so as to be self-propelled by a bogie traveling device 9 such as a chain conveyor, and a pair of floater trucks 10, 10 are provided on the outer rail 7.
Is also provided so as to be self-propelled by a traveling device 11, and a plurality of magnet floaters 1 are attached to the floater trucks 10 and 10.
2 are arranged according to the outer shape of the blank 5.

A large number of blank materials 5 are stacked on the dolly 8 described above,
Each floater 12 of the floater truck 10 is arranged at the carry-in position A according to the outer shape of the blank 5. The other floater truck 10 stands by at the end of the outer rail 7 and is provided with each floater 12 according to the blank material 5 having a different shape to be machined in the next period.

As shown in FIG. 3, the adjusting device of the magnet floater 12 has a second cylinder 14 inside a first cylinder 13 and a third cylinder inside a second cylinder 14 which are fixed to the frame of the floater truck 10. 15, the fourth cylindrical body 16 is slidably fitted in the third cylindrical body 15, the magnet floater 12 is fixed to the tip of the fourth cylindrical body 16, and the first cylindrical body 13 is provided with a handle. A screw rod 17, a second screw barrel 18 on the second barrel 14, and a third screw barrel 19 on the third barrel 15 are rotatably fitted, respectively, and the first screw rod 17 and the second screw barrel 18 are Two
The screw cylinder 8 and the third screw cylinder 19 are screwed together, and the floater 12 is supported by a so-called multi-stage screw mechanism and can be adjusted by rotating the handle.

When the blank material 5 is loaded on the dolly 8, as shown in FIG. 1, a grid-shaped pallet 20 wider than the width of the dolly 8 is placed on the dolly 8 and the blank material 5 is loaded on the pallet 20. At the same time, the guide bar 21 is erected by inserting the grid of the pallet 20 into the carriage 8, and the cylinder device 22 lifts the pallet 20 at the loading position A. If the blank material 5 is magnetic, the uppermost blank material 5 is separated and floated by the floater truck 10, but in the case of a non-magnetic material, it is the same as the conventional one. A claw holder (not shown) may be used.

As shown in FIG. 1 and FIG. 2, the lift portion 3 provided above the carry-in position A has a blank material 5 on a frame-shaped frame 24 suspended horizontally from above between the uprights 23 of the press. While supporting a pair of beams 25 orthogonal to the transport direction of a pair of support shafts 26, each of them is a space adjusting cylinder.
27, each beam 25 is provided so as to be adjustable and movable in the conveying direction of the blank 5, and each beam 25 is further provided with a suction device 28 by a plurality of vacuums. Adsorption device 28 is the fourth
As shown in FIG. 6 to FIG. 6, a vacuum pad 31 is fixed to the lower end of the piston rod 30 of the first lifting cylinder 29. The one shown in FIG. 4 and FIG. 6 is a self-negative pressure type that discharges air from the surroundings when the pad 31 is pressed, and both are attached to the lower end of the piston rod 30. By providing the pad 31 so that no moment acts on the pad 31 during adsorption, the one shown in FIG. 4 is a double rod type return cylinder, in which the ventilation passage 32 is provided at the center of the rod. The port 33 is provided at the upper end of the rod. In the case of FIG. 5, a pipe 34 parallel to the cylinder is provided so that it can move up and down.
An air passage 32 is connected between the pad 31 and the pad 31. The one shown in FIG. 6 has a vacuum breaking device interposed in the air passage 32.
By pushing the push rod 35, the valve 36 is opened to allow air to enter the pad 31, and in this case, the stopper bar 37 that comes into contact with the push rod 35 when rising is attached. The blank material 5 is sucked by any one of the suction devices 28 and raised to a predetermined height.

Next, as shown in FIG. 1, FIG. 7, and FIG. 8, the intermediate conveying section 2 is provided with a guide rail 38 provided on the frame 24.
A frame-shaped carriage 39 is supported so as to be horizontally reciprocable between the carry-in position A and the delivery position B on the feed bar 1, and the carriage 39 also has suction devices 28 similar to those described above at equal intervals in the carrying direction. Every three places are hung. Further, the mechanism for reciprocating the carriage 39 is a frame-shaped frame 24.
The feed cylinder 40 is firmly attached to the piston rod, the pinion 41 is attached to the piston rod, and the pinion 41 is attached to the frame 24.
While the fixed rack 42 that meshes with the upper side of the carriage 39 is fixed, the movable rack 43 that meshes with the lower side of the carriage 39 and the pinion 41 is fixed. The pinion 41, the fixed rack 42, and the movable rack 43 are provided as a pair on the left and right.
The frame 44 is adapted to be guided along the slide rail 45 of the frame-shaped frame 24.

Further, as shown in FIG. 1, below the carriage 39, a first receiving table 44, a second receiving table 45, and a third receiving table 46 are arranged at equal intervals in the transport direction, and the third receiving table 46 is a feed bar. 1, the carriage 39 is reciprocated with the intervals of the receiving bases 44 to 46 as strokes, and the receiving bases 44 to 46 are respectively moved up and down to load the blank material 5 conveyed by the carriage 39. Each cradle
44 to 46 are sequentially received, and are delivered to the feed bar 1 from the third receiving stand 46. Further, the receiving surfaces of the receiving bases 44 to 46 can be adjusted to different sizes according to the size of the blank 5, and the first receiving base 44 or the second receiving base 45 as shown in FIG.
A dispensing device 47 is added to remove the blank material 5 that is conveyed as it is stacked.

Therefore, the common structure of each cradle 44 to 46 is shown in FIGS.
Explaining with reference to FIG. 10 and FIG. 10, a pair of upper and lower horizontal rods 49, 49 is installed between both brackets 48 standing upright from the floor so as to be orthogonal to the conveying direction, and three sliders 50 are attached to the upper and lower horizontal rods 49. In combination, arms 51 are erected on each slider 50 so as to be vertically movable, and a receiving plate 52 is horizontally fixed to the upper end of each arm 51. In addition, screw rod 53 between both brackets 48
It is installed in parallel with and rotatably, there is no screw in the central part of the screw rod 53, and reverse screws are engraved on the left and right parts, and the screw-free part of this screw rod 53 is the central slider. 50
The left and right threaded parts are screwed into the sliders 50 on both sides, and the threaded rod 53 is further equipped with a geared motor with a brake.
54 is connected, and by driving the motor 54, the left and right receiving plates 52 are close to or apart from each other.

Furthermore, the structure that moves each cradle 44-46 up and down is the central arm.
A lift bar 55, which is parallel to the horizontal rod 49, is fixed to the lower end of the 51, and the lower ends of the arms 51 on both sides are slidably engaged with both ends of the lift bar 55 via rollers. By connecting 56, each receiving plate 52 can be moved up and down at once.

A cushion material such as rubber is attached to the surface of each receiving plate 52 to prevent the blank material 5 from being damaged.

Further, as shown in FIG. 9, the dispensing device 47 pivotally supports the base end portion of the receiving plate 52 on the upper end of the arm 51 so as to swing up and down, and receives the piston lot of the dispensing cylinder 57 pivotally attached to the arm 51. It is connected to the tip of the plate 52 and is a receiving plate by the cylinder 57.
The one who leans 52. The means for detecting whether or not one blank material 5 or two or more blank materials 5 are overlapped is determined by a sensor 58 that electrically or mechanically detects the thickness, as shown in FIG. The pay-out cylinder 57 is output by an output signal when a condition other than the reference thickness is detected.
Is designed to start.

Therefore, the carrying process according to the present invention will be described with reference to FIG. 11. For the sake of explanation, the arrow direction shown in FIG.
The blank materials that are sequentially fed will be described as 5-1, 5-2, and 5-3.

As shown in FIG. 11 a, the suction device 28 of the lift unit 3 descends to adsorb one blank material 5-1 and ascends to adsorb the blank material 5-1 to the adsorption device 28 of the carriage 39. Hand over. Blank material 5 advancing the carriage 39 and adsorbing it
-1 is stopped when facing the first pedestal 44, the pedestal 44 is raised and the suction is released as shown in FIG.
Is placed on the pedestal 44. Then, the pedestal 44 is lowered and the carriage 39 is retracted as shown in FIG. The next blank member 5-2 is lifted again by the lift unit 3 as shown in FIG.
Simultaneously with the delivery to 39, the blank 44 is raised to raise the blank 5-1 to the carriage 39. Carriage 39 is again e
As shown in the drawing, the preceding blank material 5-1 is passed to the second cradle 45 and the following blank material 5-2 is passed to the first cradle 44. The carriage 39 retreats again as shown in FIG. F, and the third blank 5-3 is placed on the first pedestal 44 in the same manner as described above. At this time, the first blank material 5-1 reaches the third receiving table 46, and after receiving the blank material 5-1 on this receiving table 46,
The pedestal 46 is further lowered from a predetermined lowered position, and the blank 5-1 is delivered to the feed bar 1 by the lowering. Therefore, the blank member 5 is sequentially conveyed by the vertical movement of the lift unit 3, the horizontal reciprocating movement of the carriage 39, and the vertical movement of each of the pedestals 44 to 46, and the blank materials 5 are supplied one by one to the press.

〔The invention's effect〕

According to the blank material supply device of the transfer press of the present invention, the blank material is horizontally transferred by the vacuum suction device that is hung from the carriage, and is vertically moved to be relayed and sequentially conveyed by the cradle that receives the blank material. Since the blank material is transported, it is transported without being interfered by other objects during transportation, and even if it is thin, it can be reliably transported without any trouble.

In addition, since a payout device is added to the cradle to detect a plurality of sheets sent in a stack and discharge them out of the conveyance path,
The presses can be reliably supplied one by one, and since the device is configured such that the pedestal is tilted by the cylinder, the structure is simple and can be realized by simple control.

Further, since the blank material is a vacuum suction device, even a non-magnetic material can be transported.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a blank material feeding device for a transfer press according to the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a sectional view showing a floater adjusting device of a floater truck, FIG. 4 and FIG. 5 and 6 are partially cutaway front views showing suction devices of various forms, FIG. 7 is a longitudinal sectional view showing the structure of the carriage, FIG. 8 is a transverse sectional view of the same, and FIG.
FIG. 10 is a front view showing a pedestal, FIG. 10 is a side view of the same, and FIGS. 11A to 11F are front views showing a blank material conveying process. 1 ... Feed bar, 2 ... Intermediate transfer section, 3 ... Lift section, 4 ... Loading section, 5 ... Blank material, 25 ... Beam,
28 …… Suction device, 39 …… Carriage, 44,45,46 …… Reception stand, 47 …… Dispensing device, 57 …… Cylinder

Claims (1)

[Claims] 1. A carriage for a transfer press.
39 is installed so as to be capable of horizontal reciprocating movement, and a plurality of vacuum suction devices 28 are hung on the carriage 39, and a blank material loaded on the rear end of the carriage 39 is lifted by the vacuum suction device 28 as well. A lift unit 3 for delivering to the suction device 28 is provided, and a plurality of pedestals 44, 45, 46, which relay and receive the blank material conveyed by the carriage 39, can be moved up and down toward the press below the carriage 39. The pedestals 46 near the press are provided between the feed bars of the press while being arranged at equal intervals in the press direction.
A dispensing device that detects a blank material that is conveyed while stacking several sheets on at least one receiving table 45 among 44, 45, and 46 and tilts the receiving table 45 with the cylinder 57 and discharges it to the outside of the transfer path. A blank material supply device for a transfer press, which is provided with 47.