JP2925032B2 - Work loading / unloading device - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial application field) In the present invention, a plate-shaped work taken from a material accumulating apparatus and carried in is taken out to a work table of a plate processing machine. In addition, the present invention relates to a work loading / unloading device that also serves as an auxiliary table for the work table when the work is long, and also serves to support a protruding portion.

(Prior Art) Conventionally, a plate-shaped work which has been taken in and taken in from a material accumulating apparatus has been carried in by a pinch roller which can move up and down by a driving roller and a fluid pressure cylinder.

In some cases, after a long work is carried into a work table of a plate processing machine, a free bearing for supporting the protruding portion can protrude and retract from the work transfer surface.

(Problems to be Solved by the Invention) By the way, the conventional work loading / unloading device is such that the work is held between the driving roller and the vertically movable pinch roller. When the tip of the work hits the free bearing, the material is skewed. The problem is that when the work is a thin plate, the rate at which the material itself escapes and becomes skewed is small,
As the plate thickness increases, the rate of slant increases.

In some cases, the free bearing was initially retracted from the unloading surface, and protruded when the tip of the workpiece passed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a work loading / unloading device that solves the above-mentioned problems without moving a work support in and out of a transfer surface and preventing a work being transferred from being hooked and inclined. is there.

[Constitution of the Invention] (Means for Solving the Problems) In view of the above problems, the present invention provides a slat conveyor that supports a plate-shaped work and is capable of being transported in the front-rear direction on a conveyor base. Above the slat conveyor,
A suction pad that is capable of adsorbing the work and transporting the work in the front-rear direction together with the slat conveyor is provided so as to be vertically movable and movable back and forth, and on the slat conveyor,
In this configuration, a first support region having a soft material pad for supporting the work and a second support region having a work support for movably supporting the work are provided.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 3, a work loading / unloading device 1 is disposed between a material accumulating device 3 and a plate processing machine 5 and used.

First, in the material accumulating device 3, a lifter 9 is provided at the bottom of a gantry 7, and a large number of plate-shaped works W are stacked and accumulated on a pallet 11 placed thereon.

On the other hand, from the bottom of the gantry 7 to an intermediate portion, that is, a position slightly higher than the upper surface of the integrated work W, eight sprockets 13 with four shafts are provided in front, rear, left and right. A chain 15 is wound left and right around each sprocket 13, and one of the four shafts is rotated by a drive motor 17. A slat roller 19 is provided between the left and right chains 15 so as to extend about the length of the base 7.
Are linked to each other to form a slat conveyor 21.

On the other hand, a support plate 27 having a plurality of suction pads 25 suspended therefrom is connected to a fluid pressure cylinder 23 vertically suspended from an upper portion of the gantry 7.

With the above configuration, the operation of the material accumulating device 3 is as follows. When one work W placed on the lifter 9 is picked up, the slat roller 19 connected to the chain 15 of the slat conveyor 21 is sucked by the slat roller 19. The drive motor 17 is rotated at a position where there is no problem in ascending, and is kept on standby. And lifter 9
Is lifted to a predetermined position, the cylinder 23 is operated to lower the suction pad 25, the uppermost work W stacked on the lifter 9 is suctioned to the suction pad 25, and then the cylinder 23 is contracted to Lift.

Then, the slat roller 19 of the slat conveyor 21 is
The drive motor 17 is driven and positioned to a position where the work W can be placed. Then, the suction of the suction pad 25 is released, and the work W is placed on the slat roller 19, and then the drive motor 17 is driven to transfer the work W placed on the slat roller 19 to the work loading / unloading device 1. Carry in.

Next, the work loading / unloading device 1 will be described in detail with reference to FIGS.

A base frame 29 having a square window shape in a plan view is horizontally installed on the ground, and a conveyor frame 31 having a pistol-shaped side surface is integrally provided on the left and right sides of the base frame 29. As shown in the figure, five pairs of sprockets 33 are rotatably mounted inside the five corners of the conveyor base 31, and a pair of chains 35 are wound. The lower front sprocket 33 is connected by a tuning shaft 37 so that the pair of chains 35 can rotate between the plurality of sprockets 33 in synchronization. Further, the tuning shaft 37 also protrudes to the left outside of the base 29, and another sprocket 39 is attached. The drive motor 41 is driven by a chain.

Between the pair of chains 35, crushed tubular carrier pipes 43 and 45 are connected and bridged, and constitute a slat conveyor 47.

The carrier pipe 43 spans the entire width of the outer surface corresponding to the outer surface of the slat conveyor 47, and is provided with a plurality of soft material pads 49 made of rubber or the like attached at various points. In addition, the carrier pipe 45 has a plurality of free bearings 51 as a plurality of work support members spanning the entire width and attached at various points so that the balls protrude from the outer surface.

The slat conveyor 47 is in the position shown in FIG.
A carrier pipe 43 is provided extending down from the front upper sprocket 33 (upper left of the figure) and extending across the front lower, rear lower, rear middle and rear upper sprockets 33 and the length of the work W. Subsequent to the carrier pipe 43, a carrier pipe 45 is provided horizontally from the rear upper sprocket 33 to about half of the length of the work W in the figure horizontally.

The slat conveyor 47 is adapted to move clockwise between five pairs of sprockets 33 in FIG. 1 in the figure, but for the sake of explanation, the slat conveyor 47 is provided with a carrier pipe 43 having a pad 49 attached thereto. The first one is the carrier pipe 43h, and the last one is the carrier pipe 43e. Similarly, the first one of the carrier pipes 45 to which the free bearings 51 are attached is designated as 45h, and the last one is designated as 45e. Note that fixed free bearings 51 are also provided on the upper surfaces of the front and rear horizontal frames above the conveyor base 31.

Further, the position of the slat conveyor 47 in FIG.
This is a position where the work loading / unloading device 1 receives one work W carried in from the slat conveyor 21 of the material stacking device 3 and also serves as an auxiliary table of a work table (described later) of the plate material processing machine 5. It is also the position that is. Therefore, when the slat conveyor 47 is stopped, it is at the position shown in FIG.
A deceleration sensor 53 and a stop sensor 55 are provided at appropriate locations, and a sensing piece 57 is attached at an appropriate location on the back surface of the carrier pipe 43.

Next, columns 59a, 59b are integrally attached to the right and left sides of the base frame 29 and the conveyor frame 31. An arm frame 61 having a square window shape is provided on top of these columns 59a and 59b.
And the tip is extended to the upper center of the slat conveyor 47. A member above the slat conveyor 47 of the arm frame 61 and extending in the front-rear direction is referred to as a front end member 61a. An upper rail support member 63 extending in the front-rear direction is suspended and fixed by an upper suspension member (not shown) provided before and after the tip member 61a, and an upper rail 65 is attached to the right side of the upper rail support member 63. Have been.

Below the upper rail support member 63, a lower rail support member 69 extending in the front-rear direction is suspended and fixed by a lower suspension member 67, and further below the lower rail support member 69 via an angle member 71 in the front-rear direction. A lower rail 73 and a chain guide 75 are attached.

On the other hand, the vertical cage base plate 77 is supported by the upper rail 65 so as to be slidable in the front-rear direction by an angle member 79 attached to the upper portion, and is not slidably moved in the groove 65
It is hooked on a. The cage base plate 77 is supported by a lower rail 73 so as to be slidable in the front-rear direction by a Z-shaped steel 81 attached near the lower portion, and is fixed to one of the chains described later.

On the other hand, a support plate 83 is fixed to the lower end of the cage base plate 77, and a plurality of suction pads 85 are provided slidably up and down in the left and right directions. These suction pads 85 are operated vertically by a hydraulic cylinder 87. The above components constitute a suction pat cage 89 that is movable in the front-rear direction.

Further, the suction pad cage 89 is provided with the upper rail support member 63.
The chains 93, 9
It is designed to be slid in the front-rear direction via 5. The chain 95 is wound around a sprocket provided before and after the lower rail support member 69, and one piece thereof is fixed to the Z-shaped steel 81 as described above, and the lower part is guided by a chain guide 75. ing. In addition, limit switches 97 and 99 are attached to the tip member 61a so as to regulate a limit of the movement of the suction pad cage 89 in the front-rear direction.

The operation of the work loading / unloading device 1 having the above configuration will be described with reference to FIGS.

First, the slat conveyor 21 of the material accumulating device 3 carries in one work W, and when the leading end approaches the front end of the conveyor base 31, the drive motor 41 rotates and the slat conveyor 47 transfers the work W from the front. Carrying in is started backward (from left to right in FIG. 1). The starting position of the slat conveyor 47, that is, the stopped position is the first position.
As shown in the figure, the first carrier pipe 43h with the pad 49 comes into contact with the lower surface of the work W, and the succeeding carrier pipe 43 comes into contact sequentially, so that the work W does not slip and moves forward in a good posture. From the rear. When the tip of the work W reaches the upper sprocket 33, the first
As shown by the two-dot chain line in FIG.
Is moved downward by the cylinder 87 to suck the upper surface near the rear end of the work W. Then, the drive motor 91 also starts to rotate,
Since the suction pad cage 89 moves rearward via the chains 93 and 95, the work W is coupled with the function of the carrier pipe 43 with the pad 49, and the free bearing 51 fixed to the horizontal frame of the conveyor base 31, Even if the tip collides with the free bearing fixed to the work table of the plate material processing machine 5, it is conveyed in a correct posture without being inclined left and right.

Then, the slat conveyor 47 and the suction pad 85 continue to move rearward, so that the rear end of the work W passes over the upper rear sprocket 33 soon. Then, the sensing piece 57 is sensed by the deceleration sensor 53, and the slat conveyor 47 is decelerated. Further, when it is also detected by the stop sensor 55, it stops at the position as shown in FIG. At this time, the carrier pipe 43e with the last pad 49 moves below the transfer surface of the work W,
Instead, a carrier pipe 45h, 45, 45e with a free bearing 51 attached to the transport surface from the rear end to the front near the center
Columns are coming.

However, the suction pad 85 continues to move backward, and the work W
Until the rear end reaches the work table of the next plate processing machine 5, the work W is carried out. That is, the suction pad
85 is moved to the rearmost position as shown by the solid line in FIG. At this point, the suction pad 85 separates the work W and is pulled up by the cylinder 87. Then, since the drive motor 91 is rotated in the reverse direction, the suction pad cage 89 is returned to the frontmost position again, and the preparation for carrying out the next work W is completed.

By the way, the loading and unloading of the work W has been completed by this, but if the work W is long and the plate material processing machine 5
Conveyor table 31
Since the rows of the carrier pipes 45 to which the free bearings 51 of the slat conveyor 47 are attached are lined up, the work loading / unloading device 1 can also serve as an auxiliary table for the work table of the plate processing machine 5. However, since the work W enters the plate material processing machine 5 and moves downward in a direction perpendicular to the plane of FIG. 3, that is, on the right side in FIG. 2, that is, on the left side for the work loading / unloading device 1,
As shown on the right side of FIG. 2, a fixed side table 101 to which a free bearing 51 is fixed is provided on the upper surface.

 Now, the plate processing machine 5 will be described with reference to FIG.

The definition of the material stacking device 3 and the work loading / unloading device 1 in the front, rear, left, and right directions is changed, so that they are defined again.
The left and right in FIG. 3 are left and right as they are, and the front is perpendicular to the paper surface and the back is rearward.

A base 105 is provided below the frame 103, and left and right work tables 107a and 107b are provided on the base 105, supported by columns provided at left and right ends. or,
A central work table 107c supported by a support is provided on the base 105. A plurality of free bearings 109 are embedded in the upper surfaces of the left and right work tables 107a and 107b and the central work table 107c.

In addition, the left and right on the base 105 extend 1 in the front-rear direction.
A pair of rails 111 is provided, guided by this rail 111,
A carriage base 113 is provided slidably in the front-rear direction by a servomotor and a feed screw (both not shown) via rollers and columns.

A carriage 115 slidable left and right is provided inside and at the front of the carriage base 113, and is similarly driven by a servomotor and a feed screw (neither is shown). A plurality of clamp devices 117 are attached to appropriate positions on the front surface of the carriage 115 with fastening screws with handles. Further, a Y-axis positioning member 119 that contacts the work W and senses the position thereof is embedded in the clamp device 117.

A left X-axis positioning member 121a is provided at the left end of the left worktable 107a so as to be vertically protrudable and retractable, while a right X-axis positioning member 121b is also provided at the right end of the right worktable 107b.

Also, a mounting arm 125 protruding rearward is fixed on a column 123 mounted on the front of the carriage base 113,
An origin positioning device 127 is attached to the tip. In the origin positioning device 127, an elevating member 129 is provided so as to be able to move up and down by an elevating cylinder, and a base member 131 is provided below the rotatable member. Further, from the base member 131, a guide member 133 is horizontally provided so as to be able to expand and contract horizontally by a cylinder (not shown). And
A pad 135 by an electromagnet or vacuum suction is attached hanging down from the tip.

Next, behind the base 105, a lower turret 137 containing a plurality of dies (not shown) is rotatably supported.

An upper turret 141 containing a plurality of punches 139 is rotatably supported at the upper rear of the frame 103, and is rotated by a servomotor (not shown) in synchronization with the lower turret 137. It has become.

On the other hand, a crank device 143 is provided at the upper center of the frame 103, and a striker 145 is provided to be vertically movable via a ram.

From the above configuration, as the operation of the plate material processing machine 5, the work W that has been carried into the left work table 107 a from the left with the left X-axis positioning member 121 a retracted first is Putt lowered by lifting member 129
After being adsorbed by 135, it is lifted a little so that it can be easily moved. The origin positioning device 127 includes a base member 131
Rotation and the horizontal movement of the guide member 133, the mounting arm 1
Even if 25 is not moved by the carriage base 133, the pad 135 can be easily horizontally moved in the X-axis and Y-axis directions (left and right, front and rear directions) within a small range. By this operation, the workpiece W is abutted against the protruding left X-axis positioning member 121a and Y-axis positioning member 119 to be positioned at the origin, and then clamped by the clamp device 17.

If the work W is long, a part thereof protrudes to the left of the left work table 107a, so that the left X-axis positioning member 121a
Cannot be used because of interference, so the right X-axis positioning member 121b is used. In this case, the origin positioning device 127 can be more easily positioned if it is also attached to the right side of the X-axis moving body 113. Also, a sufficient number of clamping devices 117 will need to be mounted across the entire width of the carriage 115.

Now, the work W clamped by the clamping device 117
Is moved in the X and Y axes by the carriage 115 and the carriage base 113, and is moved to a processing position just below the rear punch 139. At this time, even if the work W is long, the portion protruding to the left is supported by the fixed side table 101 of the work loading / unloading device 1, so that there is no problem.

When the workpiece W is positioned at the processing position, the striker
Since the 145 is lowered by the crank device 143 and hits the head of the punch 139, the work W is punched in cooperation with the die provided on the lower turret 137.

According to the above description, the effect of the work loading / unloading device 1 is as follows.
A free bearing 51 in which the front end of the work W is fixed to a horizontal bar at the rear end of the conveyor gantry 31 and a left work table of the plate processing machine 1 in addition to a surface contact of a pad 49 having a large frictional force 47.
Even if it collides with the free bearing 109 embedded in 107a,
The work W is carried out reliably without slipping in the right posture without being inclined left and right.

Further, the portion where the long work W protrudes is also supported by the free bearing 51 of the slat conveyor 47, and serves as an auxiliary table of the left work table 107a. Then, for example, a long work W is placed on the work table 107.
Even if it is moved to the machining position on a, 107c, and 107b, the presence of the fixed side table 101 can sufficiently serve as an auxiliary table for the left work table 107a.

The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes.

[Effects of the Invention] As can be understood from the above description of the embodiment, according to the present invention, the slat conveyor 47 which supports the plate-shaped work W and can be transported in the front-rear direction is provided with a soft material pad. A first support area provided with a work support 49 and a second support area provided with a work support for movably supporting the work W are provided, and the work W can be adsorbed at a position above the slat conveyor 47. In addition, since the suction pad 85 capable of transporting the work W in the front-rear direction together with the slat conveyor 47 is provided so as to be vertically movable and movable back and forth, the work W is supported by the soft material pad 49 provided on the slat conveyor 47, In addition, since the work W can be transported while the upper surface of the work W is being sucked by the suction pad 85, the work W
The workpiece W can be transported accurately even when a slight impact is applied during the transport.

Then, the work W to be transported to the plate material processing machine and processed.
Is partially protruded above the slat conveyor 47, the work W can be supported in an area provided with a work support that movably supports the work W.
Are supported movably smoothly.

[Brief description of the drawings]

FIG. 1 is a right side view of a work loading / unloading device according to the present invention,
FIG. 2 is a side view showing the relationship between the former-stage material collecting apparatus and the latter-stage sheet material processing machine. 1 Work loading / unloading device 3 Material stacking device 5 Plate processing machine 47 Slat conveyor 49 Pad 51 Free bearing W Work 107a Left work table

Claims (1)

(57) [Claims] A slat conveyor (47) that supports a plate-shaped work (W) and can be transported in the front-rear direction is provided on a conveyor base (31), and the work (W) is placed above the slat conveyor (47). A suction pad (85) capable of vertically adsorbing the workpiece (W) and transporting the work (W) in the front-rear direction together with the slat conveyor (47);
The slat conveyor (47) has a first support area having a soft material pad (49) for supporting the work (W) and a second support area having a work support for movably supporting the work (W). A work loading and unloading device, comprising: